Faculty Profiles - AKIMOTO Ikuko

写真a

AKIMOTO Ikuko

Name of department

Faculty of Systems Engineering, Materials Engineering

Job title

Associate Professor

Concurrent post

Electronics and Applied Physics Major（Associate Professor）

Mail Address

External link

Education

1994

-

1999

Kyoto University Graduated School of Science Division of Physics and Astronomy
1990

-

1994

Kyoto University Faculty of Science

Degree

Ph.D (Science) 2002

Academic & Professional Experience

2022.04

-

2024.03

Institute for Molecular Science 物質分子科学研究領域客員准教授
2010.04

-

Now

Wakayama University Faculty of Systems Engineering Associate Professor
2006.04

-

2010.03

Wakayama University Faculty of Systems Engineering Lecturer
2000.10

-

2006.03

Wakayama University Faculty of Systems Engineering Assistant Professor
1999.04

-

2000.09

Nagoya University Faculty of Science Assistant Professor
1997.04

-

1999.03

日本学術振興会特別研究員

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Association Memberships

THE PHYSICAL SOCIETY OF JAPAN
THE JAPAN SOCIETY OF APPLIED PHYSICS
THE SOCIETY OF ELECTRON SPIN SCIENCE AND TECHNOLOGY

Research Areas

Natural sciences / Semiconductors, optical and atomic physics

Seeds

パルス電子スピン共鳴法によるスピン構造解析

Classes (including Experimental Classes, Seminars, Graduation Thesis Guidance, Graduation Research, and Topical Research)

2023 Exercises in Majors A Specialized Subjects
2023 Progress of materials science and engineering Liberal Arts and Sciences Subjects
2023 Graduation Research Specialized Subjects
2023 Scientific and Technical English B Specialized Subjects
2023 Graduation Research Specialized Subjects
2023 Materials Engineering Seninar Specialized Subjects
2023 Experiments in Materials Engineering C Specialized Subjects
2023 Experiments of Materials Engineering A Specialized Subjects
2023 Quantum Mechanics ⅡB Specialized Subjects
2023 Experiments of Materials Engineering B Specialized Subjects
2023 Physics Experiments B Specialized Subjects
2023 Physics Experiments A Specialized Subjects
2023 Practice in Physics Specialized Subjects
2023 Quantum Mechanics ⅡA Specialized Subjects
2023 Advanced optical-properties of materials Specialized Subjects
2023 Solid State Physics B Specialized Subjects
2023 Mathematics in Physics Specialized Subjects
2022 Progress of materials science and engineering Liberal Arts and Sciences Subjects
2022 Quantum Mechanics ⅡB Specialized Subjects
2022 Quantum Mechanics ⅡA Specialized Subjects
2022 Mathematics in Physics Specialized Subjects
2022 Physics Experiments B Specialized Subjects
2022 Physics Experiments A Specialized Subjects
2022 Practice in Physics Specialized Subjects
2022 Graduation Research Specialized Subjects
2022 Graduation Research Specialized Subjects
2022 Graduation Research Specialized Subjects
2022 Experiments in Material Science andChemistry C Specialized Subjects
2022 Seminar in Material Science and Chemistry ⅡA Specialized Subjects
2022 Seminar in Material Science and Chemistry ⅠA Specialized Subjects
2022 Experiments in Materials Engineering C Specialized Subjects
2022 Experiments of Materials Engineering B Specialized Subjects
2022 Experiments of Materials Engineering A Specialized Subjects
2022 Materials Engineering Seninar Specialized Subjects
2022 Advanced optical-properties of materials Specialized Subjects
2022 Basic optical-properties of materials Specialized Subjects
2022 Solid State Physics B Specialized Subjects
2022 Scientific and Technical English B Specialized Subjects
2022 Introductory Seminar in Systems Engineering Specialized Subjects
2021 Advanced optical-properties of materials Specialized Subjects
2021 Practice in Physics Specialized Subjects
2021 Graduation Research Specialized Subjects
2021 Experiments in Materials Engineering C Specialized Subjects
2021 Materials Engineering Seninar Specialized Subjects
2021 Physics Experiments B Specialized Subjects
2021 Experiments of Materials Engineering B Specialized Subjects
2021 Mathematics in Physics Specialized Subjects
2021 Physics Experiments A Specialized Subjects
2021 Graduation Research Specialized Subjects
2021 Experiments of Materials Engineering A Specialized Subjects
2021 Solid State Physics B Specialized Subjects
2021 Scientific and Technical English B Specialized Subjects
2021 Experiments in Material Science andChemistry C Specialized Subjects
2021 Seminar in Material Science and Chemistry ⅡA Specialized Subjects
2021 Seminar in Material Science and Chemistry ⅠA Specialized Subjects
2021 Progress of materials science and engineering Liberal Arts and Sciences Subjects
2020 Graduation Research Specialized Subjects
2020 Graduation Research Specialized Subjects
2020 Experiments of Materials Engineering B Specialized Subjects
2020 Experiments of Materials Engineering A Specialized Subjects
2020 Materials Engineering Seninar Specialized Subjects
2020 Experiments in Materials Engineering C Specialized Subjects
2020 Advanced optical-properties of materials Specialized Subjects
2020 Basic optical-properties of materials Specialized Subjects
2020 Physics Experiments B Specialized Subjects
2020 Physics Experiments A Specialized Subjects
2020 Scientific and Technical English B Specialized Subjects
2020 Mathematics in Physics Specialized Subjects
2020 Seminar in Material Science and Chemistry ⅡA Specialized Subjects
2020 Seminar in Material Science and Chemistry ⅠA Specialized Subjects
2020 Experiments in Material Science andChemistry C Specialized Subjects
2020 Practice in Physics Specialized Subjects
2020 Progress of materials science and engineering Liberal Arts and Sciences Subjects
2019 Scientific and Technical English B Specialized Subjects
2019 Experiments in Material Science and Chemistry Specialized Subjects
2019 Experiments in Applied Physics Specialized Subjects
2019 Advanced Lectures in Applied Physics Specialized Subjects
2019 Mathematics in Physics Specialized Subjects
2019 Introduction to Majors 1 Specialized Subjects
2019 Introduction to Majors 1 Specialized Subjects
2019 Introductory Seminar in Systems Engineering Specialized Subjects
2019 Seminar in Material Science and Chemistry ⅡA Specialized Subjects
2019 Physics of Optical Processes in Solid State Materials Specialized Subjects
2019 Experiments in Material Science andChemistry C Specialized Subjects
2019 Practice in Physics Specialized Subjects
2019 Experiments in Material Science andChemistry B Specialized Subjects
2019 Experiments in Physics Specialized Subjects
2018 NA Specialized Subjects
2018 Graduation Research Specialized Subjects
2018 NA Specialized Subjects
2018 Practice in Physics Specialized Subjects
2018 Scientific and Technical English B Specialized Subjects
2018 Experiments in Material Science and Chemistry Specialized Subjects
2018 Experiments in Applied Physics Specialized Subjects
2018 Advanced Lectures in Applied Physics Specialized Subjects
2018 Mathematics in Physics Specialized Subjects
2018 NA Specialized Subjects
2018 Experiments in Physics Specialized Subjects
2017 Voluntary Study on Systems Engineering Ⅰ Specialized Subjects
2017 Experiments in Material Science and Chemistry Specialized Subjects
2017 Mathematics in Physics Specialized Subjects
2017 Introductory Seminar in Systems Engineering Specialized Subjects
2017 Seminar in Material Science and Chemistry ⅡA Specialized Subjects
2017 Seminar in Material Science and Chemistry ⅠA Specialized Subjects
2017 Special Lecture Ⅱ for Nano-science Specialized Subjects
2017 Special Lecture Ⅰ for Nano-science Specialized Subjects
2017 Experiments in Material Science andChemistry C Specialized Subjects
2017 Practice in Physics Specialized Subjects
2017 Experiments in Material Science andChemistry B Specialized Subjects
2017 Experiments in Physics Specialized Subjects
2017 Introductory Seminar in Systems Engineering Specialized Subjects
2017 Graduation Research Specialized Subjects
2017 Physics of Optical Processes in Solid State Materials Specialized Subjects
2017 Advanced Lectures in Applied Physics Specialized Subjects
2017 Experiments in Applied Physics Specialized Subjects
2017 NA Specialized Subjects
2017 Seminar in Material Science and Chemistry ⅡA Specialized Subjects
2017 Seminar in Material Science and Chemistry ⅠA Specialized Subjects
2017 Experiments in Material Science andChemistry C Specialized Subjects
2017 Special Lecture Ⅱ for Nano-science Specialized Subjects
2017 Experiments in Physics Specialized Subjects
2017 Mathematics in Physics Specialized Subjects
2017 NA Specialized Subjects
2017 NA Liberal Arts and Sciences Subjects
2016 Experiments in Material Science and Chemistry Specialized Subjects
2016 Special Lecture Ⅱ for Nano-science Specialized Subjects
2016 Special Lecture Ⅰ for Nano-science Specialized Subjects
2016 Seminar in Material Science and Chemistry ⅡA Specialized Subjects
2016 Seminar in Material Science and Chemistry ⅠA Specialized Subjects
2016 Experiments in Material Science andChemistry C Specialized Subjects
2016 Experiments in Material Science andChemistry B Specialized Subjects
2016 Experiments in Physics Specialized Subjects
2016 Experiments in Material Science andChemistry A Specialized Subjects
2016 Mathematics in Physics Specialized Subjects
2016 Introductory Seminar in Systems Engineering Specialized Subjects
2016 Practice in Physics Specialized Subjects
2016 Graduation Research Specialized Subjects
2016 NA Specialized Subjects
2016 Mathematics in Physics Specialized Subjects
2016 Practice in Physics Specialized Subjects
2016 Introductory Seminar in Systems Engineering Liberal Arts and Sciences Subjects
2016 Seminar in Material Science and Chemistry ⅠA Specialized Subjects
2016 Special Lecture Ⅱ for Nano-science Specialized Subjects
2016 Experiments in Material Science andChemistry B Specialized Subjects
2016 Experiments in Physics Specialized Subjects
2016 Experiments in Material Science andChemistry C Specialized Subjects
2016 Experiments in Material Science andChemistry A Specialized Subjects
2016 NA Specialized Subjects
2016 NA Specialized Subjects
2016 Special Lecture Ⅰ for Nano-science Specialized Subjects
2015 Experiments in Physics Specialized Subjects
2015 NA Specialized Subjects
2015 Experiments in Physics Specialized Subjects
2015 Experiments in Material Science andChemistry C Specialized Subjects
2015 Experiments in Material Science andChemistry A Specialized Subjects
2015 Seminar in Material Science and Chemistry ⅠA Specialized Subjects
2015 Special Lecture Ⅱ for Nano-science Specialized Subjects
2015 Experiments in Material Science andChemistry B Specialized Subjects
2015 Seminar in Material Science and Chemistry ⅡA Specialized Subjects
2015 Advanced Material Science andChemistry Ⅱ Specialized Subjects
2015 Physics of Optical Processes in Solid State Materials Specialized Subjects
2015 Special Lecture Ⅰ for Nano-science Specialized Subjects
2014 Seminar in Material Science and Chemistry ⅠA Specialized Subjects
2014 Advanced Material Science andChemistry Ⅱ Specialized Subjects
2014 Advanced Material Science andChemistry Ⅰ Specialized Subjects
2014 Special Lecture Ⅱ for Nano-science Specialized Subjects
2014 Special Lecture Ⅰ for Nano-science Specialized Subjects
2014 Physics of Optical Processes in Solid State Materials Specialized Subjects
2014 Experiments in Material Science andChemistry C Specialized Subjects
2014 Introduction to Material Science andChemistry Specialized Subjects
2014 Experiments in Material Science andChemistry B Specialized Subjects
2014 Experiments in Material Science andChemistry A Specialized Subjects
2014 Experiments in Physics Specialized Subjects
2014 Introductory Seminar Liberal Arts and Sciences Subjects
2014 Graduation Research Specialized Subjects
2014 Seminar in Material Science and Chemistry ⅡA Specialized Subjects
2013 Seminar in Material Science and Chemistry ⅡA Specialized Subjects
2013 Seminar in Material Science and Chemistry ⅠA Specialized Subjects
2013 Advanced Material Science andChemistry Ⅱ Specialized Subjects
2013 Advanced Material Science andChemistry Ⅰ Specialized Subjects
2013 Special Lecture Ⅱ for Nano-science Specialized Subjects
2013 Special Lecture Ⅰ for Nano-science Specialized Subjects
2013 Physics of Optical Processes in Solid State Materials Specialized Subjects
2013 Experiments in Material Science andChemistry C Specialized Subjects
2013 Practice in Physics Specialized Subjects
2013 Experiments in Material Science andChemistry B Specialized Subjects
2013 Experiments in Material Science andChemistry A Specialized Subjects
2013 Experiments in Physics Specialized Subjects
2013 Advanced Material Technologiesin Environments Liberal Arts and Sciences Subjects
2013 Experiments in Material Science andChemistry A Specialized Subjects
2013 NA Liberal Arts and Sciences Subjects
2013 Experiments in Physics Specialized Subjects
2013 Experiments in Material Science andChemistry C Specialized Subjects
2013 Graduation Research Specialized Subjects
2012 Graduation Research Specialized Subjects
2012 Experiments in Physics Specialized Subjects
2012 Experiments in Material Science andChemistry C Specialized Subjects
2012 Experiments in Material Science andChemistry A Specialized Subjects
2012 Advanced Material Science andChemistry Ⅰ Specialized Subjects
2012 Special Lecture Ⅱ for Nano-science Specialized Subjects
2012 Experiments in Material Science andChemistry B Specialized Subjects
2012 Advanced Material Science andChemistry Ⅱ Specialized Subjects
2012 Advanced Material Technologiesin Environments Liberal Arts and Sciences Subjects
2012 Physics of Optical Processes in Solid State Materials Specialized Subjects
2012 Special Lecture Ⅰ for Nano-science Specialized Subjects
2011 Graduation Research Specialized Subjects
2011 Experiments in Material Science andChemistry C Specialized Subjects
2011 Experiments in Material Science andChemistry B Specialized Subjects
2011 Experiments in Material Science andChemistry A Specialized Subjects
2011 Experiments in Physics Specialized Subjects
2011 Experiments in Physics Specialized Subjects
2011 Advanced Material Science andChemistry Ⅱ Specialized Subjects
2011 Advanced Material Science andChemistry Ⅰ Specialized Subjects
2011 Special Lecture Ⅱ for Nano-science Specialized Subjects
2011 Special Lecture Ⅰ for Nano-science Specialized Subjects
2011 Physics of Optical Processes in Solid State Materials Specialized Subjects
2011 Advanced Material Technologiesin Environments Liberal Arts and Sciences Subjects
2011 NA Specialized Subjects
2011 Physics of Optical Processes in Solid State Materials Specialized Subjects
2011 Experiments in Physics Specialized Subjects
2011 NA Specialized Subjects
2011 NA Specialized Subjects
2011 NA Specialized Subjects
2011 NA Specialized Subjects
2011 NA Specialized Subjects
2011 NA Specialized Subjects
2011 NA Specialized Subjects
2011 Graduation Research Specialized Subjects
2011 Advanced Material Technologiesin Environments Liberal Arts and Sciences Subjects
2010 Physics of Optical Processes in Solid State Materials Specialized Subjects
2010 Practice in Physics Specialized Subjects
2010 Experiments in Physics Specialized Subjects
2010 NA Specialized Subjects
2010 NA Specialized Subjects
2010 NA Specialized Subjects
2010 NA Specialized Subjects
2010 NA Specialized Subjects
2010 NA Specialized Subjects
2010 NA Specialized Subjects
2010 Introductory Seminar Liberal Arts and Sciences Subjects
2010 Graduation Research Specialized Subjects
2009 NA Specialized Subjects
2009 NA Specialized Subjects
2009 NA Specialized Subjects
2009 NA Specialized Subjects
2009 NA Specialized Subjects
2009 Physics of Optical Processes in Solid State Materials Specialized Subjects
2009 NA Specialized Subjects
2009 NA Specialized Subjects
2009 Experiments in Physics Specialized Subjects
2009 Experiments in Physics Specialized Subjects
2009 Introduction to Material Science andChemistry Specialized Subjects
2009 NA Specialized Subjects
2009 Graduation Research Specialized Subjects
2009 Advanced Material Technologiesin Environments Liberal Arts and Sciences Subjects
2008 NA Specialized Subjects
2008 NA Specialized Subjects
2008 NA Specialized Subjects
2008 NA Specialized Subjects
2008 NA Specialized Subjects
2008 Physics of Optical Processes in Solid State Materials Specialized Subjects
2008 NA Specialized Subjects
2008 NA Specialized Subjects
2008 NA Specialized Subjects
2008 Experiments in Physics Specialized Subjects
2008 NA Specialized Subjects
2008 Graduation Research Specialized Subjects
2008 Advanced Material Technologiesin Environments Liberal Arts and Sciences Subjects
2008 Introductory Seminar Liberal Arts and Sciences Subjects
2007 NA Specialized Subjects
2007 NA Specialized Subjects
2007 NA Specialized Subjects
2007 NA Specialized Subjects
2007 NA Specialized Subjects
2007 Physics of Optical Processes in Solid State Materials Specialized Subjects
2007 NA Specialized Subjects
2007 Experiments in Physics Specialized Subjects
2007 NA Specialized Subjects
2007 Graduation Research Specialized Subjects
2007 NA Specialized Subjects
2006 Experiments in Physics Specialized Subjects
2006 NA Liberal Arts and Sciences Subjects
2006 NA Specialized Subjects
2006 NA Specialized Subjects
2006 NA Specialized Subjects
2006 NA Liberal Arts and Sciences Subjects
2006 Graduation Research Specialized Subjects

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Independent study

2017 高校物理やりませんか？

Classes

2023 Systems Engineering Project SeminarⅡB Master's Course
2023 Systems Engineering Project SeminarⅡA Master's Course
2023 Systems Engineering Project SeminarⅠB Master's Course
2023 Systems Engineering Project SeminarⅠA Master's Course
2023 Physics and Spectroscopy ofSolid-State Materials Master's Course
2023 Systems Engineering SeminarⅡB Master's Course
2023 Systems Engineering SeminarⅡA Master's Course
2023 Systems Engineering SeminarⅠB Master's Course
2023 Systems Engineering SeminarⅠA Master's Course
2023 Systems Engineering Advanced Seminar Ⅰ Doctoral Course
2023 Systems Engineering Advanced Seminar Ⅰ Doctoral Course
2023 Systems Engineering Advanced Seminar Ⅱ Doctoral Course
2023 Systems Engineering Advanced Seminar Ⅱ Doctoral Course
2023 Systems Engineering Advanced Research Doctoral Course
2023 Systems Engineering Advanced Research Doctoral Course
2023 Systems Engineering Global Seminar Ⅰ Doctoral Course
2023 Systems Engineering Global Seminar Ⅰ Doctoral Course
2023 Systems Engineering Global Seminar Ⅱ Doctoral Course
2023 Systems Engineering Global Seminar Ⅱ Doctoral Course
2022 Systems Engineering Global Seminar Ⅱ Doctoral Course
2022 Systems Engineering Global Seminar Ⅰ Doctoral Course
2022 Systems Engineering Advanced Research Doctoral Course
2022 Systems Engineering Advanced Seminar Ⅱ Doctoral Course
2022 Systems Engineering Advanced Seminar Ⅰ Doctoral Course
2022 Systems Engineering Project SeminarⅡB Master's Course
2022 Systems Engineering Project SeminarⅡA Master's Course
2022 Systems Engineering Project SeminarⅠB Master's Course
2022 Systems Engineering Project SeminarⅠA Master's Course
2022 Physics and Spectroscopy ofSolid-State Materials Master's Course
2022 Systems Engineering SeminarⅡB Master's Course
2022 Systems Engineering SeminarⅡA Master's Course
2022 Systems Engineering SeminarⅠB Master's Course
2022 Systems Engineering SeminarⅠA Master's Course
2021 Systems Engineering SeminarⅠA Master's Course
2021 Systems Engineering SeminarⅠB Master's Course
2021 Systems Engineering SeminarⅡA Master's Course
2021 Systems Engineering SeminarⅡB Master's Course
2021 Physics and Spectroscopy ofSolid-State Materials Master's Course
2021 Systems Engineering Project SeminarⅠA Master's Course
2021 Systems Engineering Project SeminarⅠB Master's Course
2021 Systems Engineering Project SeminarⅡA Master's Course
2021 Systems Engineering Project SeminarⅡB Master's Course
2021 Systems Engineering Advanced Seminar Ⅰ Doctoral Course
2021 Systems Engineering Advanced Seminar Ⅱ Doctoral Course
2021 Systems Engineering Advanced Research Doctoral Course
2021 Systems Engineering Global Seminar Ⅰ Doctoral Course
2021 Systems Engineering Global Seminar Ⅱ Doctoral Course
2020 Systems Engineering Global Seminar Ⅱ Doctoral Course
2020 Systems Engineering Global Seminar Ⅰ Doctoral Course
2020 Systems Engineering Advanced Research Doctoral Course
2020 Systems Engineering Advanced Seminar Ⅱ Doctoral Course
2020 Systems Engineering Advanced Seminar Ⅰ Doctoral Course
2020 Systems Engineering Project SeminarⅡB Master's Course
2020 Systems Engineering Project SeminarⅡA Master's Course
2020 Systems Engineering Project SeminarⅠB Master's Course
2020 Systems Engineering Project SeminarⅠA Master's Course
2020 Physics and Spectroscopy ofSolid-State Materials Master's Course
2020 Systems Engineering SeminarⅡB Master's Course
2020 Systems Engineering SeminarⅡA Master's Course
2020 Systems Engineering SeminarⅠB Master's Course
2020 Systems Engineering SeminarⅠA Master's Course
2019 Physics and Spectroscopy ofSolid-State Materials Master's Course
2019 Physics and Spectroscopy ofSolid-State Materials Master's Course
2019 Systems Engineering Advanced Seminar Ⅱ Doctoral Course
2019 Systems Engineering Advanced Seminar Ⅱ Doctoral Course
2019 Systems Engineering Advanced Research Doctoral Course
2019 Systems Engineering Advanced Research Doctoral Course
2019 Systems Engineering SeminarⅡB Master's Course
2019 Systems Engineering SeminarⅡA Master's Course
2019 Systems Engineering SeminarⅠB Master's Course
2019 Systems Engineering SeminarⅠA Master's Course
2019 Systems Engineering Project SeminarⅡB Master's Course
2019 Systems Engineering Project SeminarⅡA Master's Course
2019 Systems Engineering Project SeminarⅠB Master's Course
2019 Systems Engineering Project SeminarⅠA Master's Course
2018 Systems Engineering Advanced Research Doctoral Course
2018 Systems Engineering Advanced Research Doctoral Course
2018 Systems Engineering Advanced Seminar Ⅱ Doctoral Course
2018 Systems Engineering Advanced Seminar Ⅱ Doctoral Course
2018 Systems Engineering Advanced Seminar Ⅰ Doctoral Course
2018 Systems Engineering Advanced Seminar Ⅰ Doctoral Course
2018 Systems Engineering Project SeminarⅡB Master's Course
2018 Systems Engineering Project SeminarⅡA Master's Course
2018 Systems Engineering Project SeminarⅠB Master's Course
2018 Systems Engineering Project SeminarⅠA Master's Course
2018 Systems Engineering SeminarⅡB Master's Course
2018 Systems Engineering SeminarⅡA Master's Course
2018 Systems Engineering SeminarⅠB Master's Course
2018 Systems Engineering SeminarⅠA Master's Course
2018 Physics and Spectroscopy ofSolid-State Materials Master's Course
2018 Physics and Spectroscopy ofSolid-State Materials Master's Course
2017 Systems Engineering Advanced Research Doctoral Course
2017 Systems Engineering Advanced Research Doctoral Course
2017 Systems Engineering Advanced Seminar Ⅰ Doctoral Course
2017 Systems Engineering Advanced Seminar Ⅰ Doctoral Course
2017 Systems Engineering Project SeminarⅡB Master's Course
2017 Systems Engineering Project SeminarⅡA Master's Course
2017 Systems Engineering Project SeminarⅠB Master's Course
2017 Systems Engineering Project SeminarⅠA Master's Course
2017 Physics and Spectroscopy ofSolid-State Materials Master's Course
2017 Physics and Spectroscopy ofSolid-State Materials Master's Course
2017 Systems Engineering SeminarⅡB Master's Course
2017 Systems Engineering SeminarⅡA Master's Course
2017 Systems Engineering SeminarⅠB Master's Course
2017 Systems Engineering SeminarⅠA Master's Course
2017 Physics and Spectroscopy ofSolid-State Materials
2017 Physics and Spectroscopy ofSolid-State Materials
2017 NA Master's Course
2017 Systems Engineering Project SeminarⅡA Master's Course
2017 Systems Engineering Project SeminarⅠB Master's Course
2017 Systems Engineering Project SeminarⅠA Master's Course
2017 Systems Engineering SeminarⅡB Master's Course
2017 Systems Engineering SeminarⅡA Master's Course
2017 Systems Engineering SeminarⅠB Master's Course
2017 Systems Engineering SeminarⅠA
2016 Systems Engineering Advanced Research Doctoral Course
2016 Systems Engineering Advanced Research Doctoral Course
2016 Systems Engineering Advanced Seminar Ⅱ Doctoral Course
2016 Systems Engineering Advanced Seminar Ⅱ Doctoral Course
2016 Systems Engineering Project SeminarⅡB Master's Course
2016 Systems Engineering Project SeminarⅡA Master's Course
2016 Systems Engineering Project SeminarⅠB Master's Course
2016 Systems Engineering Project SeminarⅠA Master's Course
2016 Systems Engineering SeminarⅡB Master's Course
2016 Systems Engineering SeminarⅡA Master's Course
2016 Systems Engineering SeminarⅠB Master's Course
2016 Systems Engineering SeminarⅠA Master's Course
2016 Physics and Spectroscopy ofSolid-State Materials Master's Course
2016 Physics and Spectroscopy ofSolid-State Materials Master's Course
2016 NA
2016 Systems Engineering Project SeminarⅡA
2016 NA
2016 Systems Engineering Project SeminarⅠA
2016 Physics and Spectroscopy ofSolid-State Materials
2016 Physics and Spectroscopy ofSolid-State Materials
2016 NA
2016 NA
2016 Systems Engineering Project SeminarⅡA
2016 Systems Engineering SeminarⅠA
2015 Physics and Spectroscopy ofSolid-State Materials
2015 Physics and Spectroscopy ofSolid-State Materials
2015 Systems Engineering Advanced Seminar Ⅱ
2015 Systems Engineering Advanced Seminar Ⅰ
2015 Systems Engineering Advanced Research
2015 Systems Engineering SeminarⅡA
2015 Systems Engineering SeminarⅠA
2015 Systems Engineering Project SeminarⅡA
2015 Systems Engineering Project SeminarⅠA
2015 Systems Engineering Advanced Seminar Ⅱ
2015 Systems Engineering Advanced Seminar Ⅰ
2015 Systems Engineering Advanced Research
2015 Systems Engineering SeminarⅡB
2015 Systems Engineering SeminarⅠB
2015 Systems Engineering Project SeminarⅡB
2015 Systems Engineering Project SeminarⅠB
2015 Physics and Spectroscopy ofSolid-State Materials
2015 Physics and Spectroscopy ofSolid-State Materials
2015 Systems Engineering SeminarⅡB
2015 Systems Engineering SeminarⅡA
2015 Systems Engineering SeminarⅠB
2015 Systems Engineering SeminarⅠA
2014 Systems Engineering Global Seminar Ⅱ
2014 Systems Engineering Global Seminar Ⅱ
2014 Systems Engineering Advanced Research
2014 Systems Engineering Advanced Research
2014 Systems Engineering Advanced Seminar Ⅱ
2014 Systems Engineering Advanced Seminar Ⅱ
2014 Systems Engineering Advanced Seminar Ⅰ
2014 Systems Engineering Advanced Seminar Ⅰ
2014 Systems Engineering Project SeminarⅡB
2014 Systems Engineering Project SeminarⅡA
2014 Systems Engineering Project SeminarⅠB
2014 Systems Engineering Project SeminarⅠA
2014 Physics and Spectroscopy ofSolid-State Materials
2014 Physics and Spectroscopy ofSolid-State Materials
2014 Systems Engineering SeminarⅡB
2014 Systems Engineering SeminarⅡA
2014 Systems Engineering SeminarⅠB
2014 Systems Engineering SeminarⅠA
2013 Systems Engineering Advanced Research
2013 Systems Engineering Advanced Research
2013 Systems Engineering Advanced Seminar Ⅱ
2013 Systems Engineering Advanced Seminar Ⅱ
2013 Systems Engineering Advanced Seminar Ⅰ
2013 Systems Engineering Advanced Seminar Ⅰ
2013 Systems Engineering Project SeminarⅡB
2013 Systems Engineering Project SeminarⅡA
2013 Systems Engineering Project SeminarⅠB
2013 Systems Engineering Project SeminarⅠA
2013 Physics and Spectroscopy ofSolid-State Materials
2013 Physics and Spectroscopy ofSolid-State Materials
2013 Systems Engineering SeminarⅡB
2013 Systems Engineering SeminarⅡA
2013 Systems Engineering SeminarⅠB
2013 Systems Engineering SeminarⅠA
2013 Systems Engineering Project SeminarⅠA
2013 Physics and Spectroscopy ofSolid-State Materials
2013 Physics and Spectroscopy ofSolid-State Materials
2013 Systems Engineering SeminarⅡA
2013 Systems Engineering Project SeminarⅠA
2012 Physics and Spectroscopy ofSolid-State Materials
2012 Physics and Spectroscopy ofSolid-State Materials
2012 Systems Engineering Advanced Seminar Ⅰ
2012 Systems Engineering Advanced Research
2012 Systems Engineering SeminarⅡA
2012 Systems Engineering SeminarⅠA
2012 Systems Engineering Project SeminarⅡA
2012 Systems Engineering Project SeminarⅠA
2012 Systems Engineering Advanced Seminar Ⅱ
2012 Systems Engineering Advanced Seminar Ⅰ
2012 Systems Engineering Advanced Research
2012 Systems Engineering SeminarⅡB
2012 Systems Engineering SeminarⅠB
2012 Systems Engineering Project SeminarⅡB
2012 Systems Engineering Project SeminarⅠB
2011 Systems Engineering Project SeminarⅡB
2011 Systems Engineering Project SeminarⅡA
2011 Systems Engineering Project SeminarⅠB
2011 Systems Engineering Project SeminarⅠA
2011 Systems Engineering Advanced Research
2011 Systems Engineering Advanced Research
2011 NA
2011 NA
2011 Systems Engineering Advanced Seminar Ⅱ
2011 Systems Engineering Advanced Seminar Ⅱ
2011 Systems Engineering Advanced Seminar Ⅰ
2011 Systems Engineering Advanced Seminar Ⅰ
2011 Physics and Spectroscopy ofSolid-State Materials
2011 Physics and Spectroscopy ofSolid-State Materials
2011 NA Master's Course
2011 NA Master's Course
2011 NA Master's Course
2011 NA Master's Course
2011 NA Master's Course
2011 Physics and Spectroscopy ofSolid-State Materials Master's Course
2011 Physics and Spectroscopy ofSolid-State Materials Master's Course
2010 NA Master's Course
2010 NA Master's Course
2010 NA Master's Course
2010 NA Master's Course
2010 Physics and Spectroscopy ofSolid-State Materials Master's Course
2010 Physics and Spectroscopy ofSolid-State Materials Master's Course
2009 Physics and Spectroscopy ofSolid-State Materials Master's Course
2009 Physics and Spectroscopy ofSolid-State Materials Master's Course
2009 NA Master's Course
2009 NA Master's Course
2009 NA Master's Course
2009 NA Master's Course
2008 Physics and Spectroscopy ofSolid-State Materials Master's Course
2008 Physics and Spectroscopy ofSolid-State Materials Master's Course
2008 NA Master's Course
2008 NA Master's Course
2008 NA Master's Course
2008 NA Master's Course
2007 Physics and Spectroscopy ofSolid-State Materials Master's Course
2007 Physics and Spectroscopy ofSolid-State Materials Master's Course
2007 NA Master's Course
2007 NA Master's Course
2007 NA Master's Course
2007 NA Master's Course

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Research Interests

分子性固体
光物性
レーザー分光
電子スピン共鳴

Published Papers

Cyclotron resonance imaging at cryogenic temperatures enabled by electric field modification in a microwave cavity

Ikuko Akimoto, Takayuki Suzuki, Nobuko Naka, Hideto Matsuoka （Part： Lead author )

Journal of Physics D: Applied Physics 58 025309 2024.10 [Refereed]

DOI
Photogenerate electron- and hole-trap distributions in Al-doped anatase TiO<sub>2</sub> crystals measured by cryogenic EPR imaging

Yamato Kitao, Hideto Matsuoka, Ayane Murano, Takao Sekiya, Ikuko Akimoto （Part： Last author,　Corresponding author )

Physica Scripta ( IOP Publishing ) 99 025514 2024.01 [Refereed]

　View Summary

Abstract

Electron paramagnetic resonance (EPR) imaging was performed on aluminium-doped anatase titanium dioxide (TiO<sub>2</sub>) crystals to demonstrate the distributions of photoinduced trapped electrons and holes at cryogenic temperatures. Complementary distributions of trapped electrons and holes were observed at 25 K; trapped electrons were predominant on the {101} planes, whereas trapped holes were predominant on the (001) and {110} planes in the tetragonal crystal structure. These separate distributions are consistent with the reported facet-dependent photocatalytic efficiency of photoreduction and photooxidation in anatase crystals, resulting from crystal plane-dependent carrier transfer. By this extrinsic trap system, the carrier transport properties were derivatively extracted through electron and hole traps This report provides insight into the fundamental physics governing the facet dependence of photocatalytic effects.

DOI
Intrinsic Mobility of Low-Density Electrons in Photoexcited Diamond

K. Konishi, I. Akimoto, H. Matsuoka, J. Isberg, N. Naka

Physical Review Applied ( American Physical Society (APS) ) 17 ( 3 ) 2022.03 [Refereed]

DOI
Transient coexistence of excitons and charge carriers in high-purity diamond

Sayaka Hamabata, Junichi H. Kaneko, Nobuko Naka, Ikuko Akimoto

Diamond and Related Materials ( Elsevier BV ) 120 108678 - 108678 2021.12 [Refereed]

DOI
Time-Resolved EPR and Theoretical Investigations of Naphthalene Diimide Spin Dynamics in the Excited State

Hideto Matsuoka, Yuki Shibano, Ikuko Akimoto, Yuki Kanzaki

Bulletin of the Chemical Society of Japan ( The Chemical Society of Japan ) 2021.10 [Refereed]

DOI
Diffusion-related lifetime and quantum efficiency of excitons in diamond

K. Konishi, I. Akimoto, J. Isberg, N. Naka

Physical Review B 2020.12 [Refereed]
Low-temperature mobility-lifetime product in synthetic diamond

K. Konishi, I. Akimoto, H. Matsuoka, V. Djurberg, S. Majdi, J. Isberg, N. Naka

Applied Physics Letters 2020.12 [Refereed]
Time-resolved measurement of photocarrier generation in CH3NH3PbI3 single crystals

Y. Tanaka, I. Akimoto

Journal of Physics: Conf. Series 1220 012019 2019.08 [Refereed]
Temperature-dependent carrier injection routes under optical excitation in high-purity diamond crystals

S. Hamabata, I. Akimoto, N. Naka

Journal of Physics: Conf. Series 1220 012023 2019.08 [Refereed]
Photocarrier injection by two-photon excitation in rubrene single crystal

K. Goto, T. Takayama, K. Ohata, K. Matsushita, I. Akimoto

Journal of Physics: Conf. Series 1220 012010 2019.08 [Refereed]
Intrinsic carrier parameters and optical carrier injection method in high-purity diamonds

I. Akimoto, N. Naka

IntechOpen Diamonds in Scientific Research and High Technology 2019.04 [Refereed]

DOI
Evidence of exciton dissociation into carriers induced by electric field in rubrene crystals

K. Goto, T. Takayama, K. Ohata, K. Matsushita, I. Akimoto

Journal of Luminescence 205 46 - 51 2019 [Refereed]
Double Electron–Electron Resonance Between Trapped Electron and Hole in a Semiconductor

Ikuko Akimoto, Takao Sekiya

Applied Magnetic Resonance ( Springer-Verlag Wien ) 49 ( 8 ) 1 - 10 2018.04 [Refereed]

　View Summary

We demonstrate the spin interactions between dispersedly trapped electrons and holes in a semiconductor using the double electron–electron resonance (DEER) method of the pulsed electron paramagnetic resonance (EPR) techniques. An aluminum-doped titanium dioxide crystal is adopted as a spin system, in which optically generated electrons and holes are trapped, to reveal EPR signals that appear close to each other at a selected crystal orientation under an external magnetic field. We used the four-pulse DEER method by applying two microwave frequencies to a microwave cavity for pumping electrons and probing holes at the optimum temperature of 32 K. The dipolar modulation in the probed signal by pumping interacting spins was successfully detected. The observed non-oscillating decay shape indicates that the detected interaction is caused by widely distributed trapped electron and hole spins over long distances. We were able to extract a spin-pair distribution function by the first derivative of a background-corrected curve, referring to a previously reported method.

DOI
Quantitative relevance of substitutional impurities to carrier dynamics in diamond

Takaaki Shimomura, Yoshiki Kubo, Julien Barjon, Norio Tokuda, Ikuko Akimoto, Nobuko Naka

Physical Review Materials 2 094601 2018 [Refereed]
Two optical routes of cold carrier injection in silicon revealed by time-resolved excitation spectroscopy

Ikuko Akimoto, Nobuko Naka

APPLIED PHYSICS EXPRESS ( IOP PUBLISHING LTD ) 10 ( 6 ) 2017.06 [Refereed]

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We reveal two routes of optical carrier injection in pure silicon by means of high-resolution excitation spectroscopy on nanosecond cyclotron resonances. Free carriers are generated either by the band-to-band transition assisted by phonon emission, or via two-body collisions of excitons. The first route was previously masked by a strong excitonic response in steady-state optical spectra at low temperatures. Furthermore, valley polarization is achieved for the cold carriers created by the second route with optimized excess energy. These optical carrier injection routes are crucial to initialize the momentum and valley degrees of freedom of carriers in order to enable versatile applications of indirect-bandgap semiconductors. (C) 2017 The Japan Society of Applied Physics

DOI
Excitons and fundamental transport properties of diamond under photo-injection

Nobuko Naka, Hikaru Morimoto, Ikuko Akimoto

PHYSICA STATUS SOLIDI A-APPLICATIONS AND MATERIALS SCIENCE ( WILEY-V C H VERLAG GMBH ) 213 ( 10 ) 2551 - 2563 2016.10 [Refereed]

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Exciton diffusivity and carrier mobility are key features in determining transport properties of a material. The optimum values required for high-performance devices are expected to be realized in undoped intrinsic materials. Diamond, one of the emergent high-mobility materials, has a wide band gap suited for use in power electronics and optoelectronics. For many years, however, mobility measurement for diamond has been limited by carrier freezing at deep impurity levels. Recently, attempts at utilizing photoexcited carriers in undoped diamond have been made in a wide temperature range and various excitation schemes. A series of investigations demonstrated a wealth of intriguing observations such as dominant role of excitons and emergence of low-temperature anomaly in momentum relaxation. This article highlights recent experimental advances and progresses in understanding transport properties of photoexcited intrinsic diamond. (C) 2016 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim

DOI
White-light emission from solid carbon in aqueous solution during hydrogen generation induced by nanosecond laser pulse irradiation

Ikuko Akimoto, Shota Yamamoto, Kosuke Maeda

APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING ( SPRINGER ) 122 ( 7 ) 2016.07 [Refereed]

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We previously discovered a novel method of hydrogen generation from high-grade charcoal in an aqueous solution using nanosecond laser pulse irradiation. In this paper, white-light emission during this reaction is reported: A broad spectrum over the visible range is observed above a threshold excitation energy density. The white-light emission is a simultaneous product of the hydrogen generation reaction and is attributed to blackbody radiation in accordance with Planck's Law at a temperature above 3800 K. Consequently, we propose that hydrogen generation induced by laser irradiation proceeds similarly to classical coal gasification, which features reactions at high pressure and high temperature.

DOI
Time-resolved cyclotron resonance on dislocation-free HPHT diamond

I. Akimoto, N. Naka, N. Tokuda

Diamond and Related Materials ( Elsevier Ltd ) 63 38 - 42 2016.03 [Refereed]

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Intrinsic transport properties in diamond are remained frontiers in material research of semiconductors. Here, we apply the time-resolved cyclotron resonance (TRCR) method to dislocation-free HPHT diamonds in order to elucidate the momentum relaxation mechanisms of photoexcited carriers. Two specimens of single sector crystals oriented along [001] and [111] directions are examined. The both specimens show clear TRCR signals below 40 K, where the signals in the (111)-oriented diamond decay faster than those in the (001)-oriented one. From the temperature dependence of the CR spectrum in the (111)-oriented diamond, carrier momentum relaxation rates at the low temperature limit are extracted. The rates are two/four times larger for heavy/light holes in the HPHT diamond than the previous results obtained in a high-purity CVD diamond, and include temperature-independent scattering by neutral impurities. We also deduce that the TRCR detection is rather insensitive to crystalline dislocations by considering the cyclotron radii of carriers.

DOI
21pPSA-19 Infrared spectroscopy on high-purity CVD and HPHT diamond crystals

Shimomura T., Naka N., Tokuda N., Akimoto I.

Meeting Abstracts of the Physical Society of Japan ( The Physical Society of Japan (JPS) ) 71 1579 - 1579 2016

DOI
20pBP-7 Dynamics of optically generated carriers in high-purity silicon crystals

Akimoto I., Ohata K., Naka N.

Meeting Abstracts of the Physical Society of Japan ( The Physical Society of Japan (JPS) ) 71 1507 - 1507 2016

DOI
23pPSA-34 Relaxation of excitons and holes in diamond measured by the time-resolved cyclotron resonance

Akimoto I., Naka N.

Meeting Abstracts of the Physical Society of Japan ( The Physical Society of Japan (JPS) ) 70 1580 - 1580 2015

DOI
Fluorescent silica nanoparticles modified chemically with terbium complexes as potential bioimaging probes: their fluorescence and colloidal properties in water

Yoshio Nakahara, Yoichi Tatsumi, Ikuko Akimoto, Shusuke Osaki, Motomichi Doi, Keiichi Kimura

NEW JOURNAL OF CHEMISTRY ( ROYAL SOC CHEMISTRY ) 39 ( 2 ) 1452 - 1458 2015 [Refereed]

　View Summary

It generally requires a complicated reaction protocol for the synthesis of silylated fluorescent lanthanide complexes. In this study, a silylated terbium complex was prepared by a very simple procedure through formation of a Schiff base between a terbium complex bearing a formyl group and 3-aminopropyltriethoxysilane. Using the silylated terbium complex, highly fluorescent silica nanoparticles modified chemically with terbium complexes (Tb-SNPs) were efficiently synthesized by a reverse micelle method with Triton X-100 as a surfactant in cyclohexane. The fluorescence properties of Tb-SNPs were remarkably improved by photostability, pH dependence and fluorescence lifetime, compared to free terbium complexes. Also, Tb-SNPs hardly aggregated under aqueous conditions with different salt concentrations and pHs. From these results, it was found that Tb-SNPs are applicable under physiological aqueous conditions. Furthermore, as an application model, Tb-SNPs were used as the fluorescent label for the imaging of African green monkey kidney cells.

DOI
18pPSA-22 Comparison of steady- and time-resolved- cyclotron resonance methods for photocarriers in a high-resistivity silicon crystal

Ohata K., Aiba K., Handa Y., Akimoto I., Naka N.

Meeting Abstracts of the Physical Society of Japan ( The Physical Society of Japan (JPS) ) 70 1274 - 1274 2015

DOI
17aCE-1 Excitation wavelength dependence of photocarrier generation processes in high-resistivity silicon crystal

Akimoto I., Ohata K., Handa Y., Naka N.

Meeting Abstracts of the Physical Society of Japan ( The Physical Society of Japan (JPS) ) 70 1191 - 1191 2015

DOI
Nanosecond cyclotron resonance in ultrapure diamond

Nobuko Naka, Katsuyuki Fukai, Yushi Handa, Ikuko Akimoto

JOURNAL OF LUMINESCENCE ( ELSEVIER SCIENCE BV ) 152 93 - 97 2014.08 [Refereed]

　View Summary

We have investigated temporal properties of photo-excited carriers in ultrapure diamond by the nanosecond cyclotron resonance (CR) method. The ramp time and the amplitude of the CR signals are found to be dependent on the incident laser pulse energy as well as on the photon energy for excitation. The dependences are discussed based on the photoabsorption process due to the indirect excitons in diamond, which is assisted by absorption of the transverse-acoustic phonons. Similarities to the free-carrier generation via two-body excitonic collisions in a dipole-forbidden direct gap semiconductor, Cu2O, are pointed out. (C) 2014 Elsevier B.V. All rights reserved.

DOI
High carrier mobility in ultrapure diamond measured by time-resolved cyclotron resonance

Ikuko Akimoto, Yushi Handa, Katsuyuki Fukai, Nobuko Naka

APPLIED PHYSICS LETTERS ( AMER INST PHYSICS ) 105 ( 3 ) 2014.07 [Refereed]

　View Summary

We have performed time-resolved cyclotron resonance measurements in ultrapure diamond crystals for the temperature range of T = 7.3-40 K and obtained the temperature-dependent momentum relaxation times based on the cyclotron resonance widths for optically generated electrons and holes. The relaxation time follows a T-3/2 law down to 12 K, which is expected for acoustic-phonon scattering without impurity effect because of the high purity of our samples. The deviation from the law at lower temperatures is explained by the impurity scattering and the breakdown of the high-temperature approximation for the phonon scattering. We extract the carrier drift mobility by using the directly measured effective masses and the relaxation times. The mobility at 10 K for 600 ns delay time after optical injection is found to be mu(e) = 1.5 x 10(6) cm(2)/V s for the electrons, and mu(lh) = 2.3 x 10(6) cm(2)/V s and mu(hh) = 2.4 x 10(5) cm(2)/V s for the light and heavy holes, respectively. These high values are achieved by our high-sensitivity detection for low-density carriers (at < 10(11) cm(-3)) free from the carrier-carrier scattering as well as by the suppression of the impurity scattering in the high-purity samples. (C) 2014 AIP Publishing LLC.

DOI
Alcohol additive effect in hydrogen generation from water with carbon by photochemical reaction

Kosuke Maeda, Nobuhiko Ozaki, Ikuko Akimoto

JAPANESE JOURNAL OF APPLIED PHYSICS ( IOP PUBLISHING LTD ) 53 ( 5 ) 2014.05 [Refereed]

　View Summary

We have found a novel photochemical activity of carbon powder to generate hydrogen-included gas by irradiating nanosecond laser pulse on carbon aqueous suspension at room temperature. In this study, we investigate alcohol additive effect to improve the gas generation efficiency in Bincho-tan charcoal aqueous suspension. We find that the generated gas volume with 50 wt% ethanol addition increases twice as much as that without ethanol. Components of the generated gas are analyzed to be 50% of hydrogen, 20% of carbon monoxide, and others, being similar to that generated with pure water suspension. Possible roles of ethanol are discussed as an agent in photochemical reactions and/or as a hole scavenger reagent in a photocatalytic reaction. (C) 2014 The Japan Society of Applied Physics

DOI
Hydrogen generation by laser irradiation of carbon powder in water

Ikuko Akimoto, Kousuke Maeda, Nobuhiko Ozaki

Journal of Physical Chemistry C 117 ( 36 ) 18281 - 18285 2013.09 [Refereed]

　View Summary

We report the photochemical activity of carbon powder in the generation of hydrogen from water by laser irradiation, without any electrodes and photocatalysts. The gas was obtained by laser irradiation in the VIS-NIR range and was dependent nonlinearly on the laser power density. From a gas component analysis and a repeated irradiation experiment, it was found that the carbon powder was oxidized and acted as a sacrificial reagent in the photochemical hydrogen generation. In addition, a highly carbonized charcoal, known as Bincho-tan, was found to effectively work for the hydrogen generation. © 2013 American Chemical Society.

DOI
Free-carrier generation by two-photon resonant excitation to the excitonic states in cuprous oxide

Nobuko Naka, Ikuko Akimoto, Masanobu Shirai

PHYSICA STATUS SOLIDI B-BASIC SOLID STATE PHYSICS ( WILEY-V C H VERLAG GMBH ) 250 ( 9 ) 1773 - 1776 2013.09 [Refereed]

　View Summary

We have investigated nanosecond temporal responses of the cyclotron resonance signal of optically generated carriers in Cu-2 O. The rise time is found to increase significantly as the excitation photon energy approaches to the phonon-assisted absorption edge of the 1s exciton. We model the generation of free carriers by two-body collisions of excitons, which leads to the reasonable estimation of the Auger coefficient. We also demonstrate the excitation spectroscopy of cyclotron resonance by using a two-photon transition to the even-parity excitonic states. Their dynamics is discussed based on the quantum-number dependence of the resonance linewidth. (C) 2013 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim

DOI
Direct measurement via cyclotron resonance of the carrier effective masses in pristine diamond

Nobuko Naka, Katsuyuki Fukai, Yushi Handa, Ikuko Akimoto

PHYSICAL REVIEW B ( AMER PHYSICAL SOC ) 88 ( 3 ) 2013.07 [Refereed]

　View Summary

We have determined effective mass parameters for ultrapure diamond by time-resolved cyclotron resonance of optically excited carriers. The transverse and longitudinal electron masses are found to be m(t)/m(0) = 0.280(2) and m(t)/m(0) = 1.56( 2), where m(0) is the free-electron mass. The Luttinger parameters are extracted as gamma(1) = 2.67(2), gamma(2) = -0.40(2), and gamma(3) = 0.68(2), which give the light- and heavy-hole bands with considerable anisotropy and the split-off hole mass. The resonance widths indicate scattering times longer than 100 ps and carrier mobilities as high as 10(6) cm(2) V-1 s(-1) at 10 K.

DOI
Temporal shift from magnetoplasma resonance to cyclotron resonance of photo-carriers generated from 1s-exciton in cuprous oxide crystal

I. Akimoto, S. Torai, N. Naka, M. Shirai

EUROPEAN PHYSICAL JOURNAL B ( SPRINGER ) 85 ( 11 ) 2012.11 [Refereed]

　View Summary

We have established a method for time-resolved cyclotron resonance measurements using an electron spin resonance cavity with a temporal resolution 15 ns under photo-excitation in an undoped semiconductor, cuprous oxide. The observed photo-carriers are generated via long-lived 1s-excitons excited at the phonon assisted absorption edge below the yellow gap. This work focuses on the fast response that is within 80 ns after photo-excitation of high-density excitons. A shift of the photo-carriers from a magnetoplasma resonance to a cyclotron resonance, previously known as a steady resonance in highly doped semiconductors, is observed for the first time in the temporal domain. We successfully explain the real and imaginary parts of the transient microwave absorption using spectral simulations, taking account of the depolarization factors in two different sample shapes and configurations in the cavity.

DOI
Size dependent optical properties of quinacridonequinone nanoparticles prepared by liquid laser ablation in water

Ikuko Akimoto, Masahiro Ohata, Nobuhiko Ozaki, Ping Gu

CHEMICAL PHYSICS LETTERS ( ELSEVIER SCIENCE BV ) 552 102 - 107 2012.11 [Refereed]

　View Summary

We investigated optical properties of colloidal solutions of nanoparticles prepared by laser ablation of quinacridonequinone powder in a poor solvent, water. Blue shift of the absorption peak energy was observed corresponding to the increase of laser fluence or to the prolonged irradiation time. For a series of colloidal solutions, we found a linear correlation between the blue shift of the absorption peak energy and the decrease in the diameter of the nanoparticles. The blue shift is considered to be due to the surface state, such as surface excitons or bond modified surface states. (C) 2012 Elsevier B.V. All rights reserved.

DOI
Time-resolved cyclotron resonance in cuprous oxide

Nobuko Naka, Ikuko Akimoto, Masanobu Shirai, Ken-Ichi Kan'No

Physical Review B - Condensed Matter and Materials Physics 85 ( 3 ) 2012.01 [Refereed]

　View Summary

We have demonstrated cyclotron resonance with a temporal resolution of 15 ns by using an electron-spin-resonance cavity. In an undoped direct-gap semiconductor, cuprous oxide, we observe clear low-field shifts of the cyclotron resonance peaks shortly after generation of photoexcited carriers. Based on the plasma shift of the cyclotron resonance, we evaluate the carrier density and quantitatively discuss the interaction between free carriers and excitons. With increasing time delay, the hole resonance asymptotically reaches the constant value corresponding to an effective mass of 0.575 times the free electron mass, providing a definitive answer to the controversy on the effective mass of holes in cuprous oxide. © 2012 American Physical Society.

DOI
Time-resolved cyclotron resonance in cuprous oxide

Nobuko Naka, Ikuko Akimoto, Masanobu Shirai, Ken-ichi Kan'no

PHYSICAL REVIEW B ( AMER PHYSICAL SOC ) 85 ( 3 ) 2012.01 [Refereed]

　View Summary

We have demonstrated cyclotron resonance with a temporal resolution of 15 ns by using an electron-spin-resonance cavity. In an undoped direct-gap semiconductor, cuprous oxide, we observe clear low-field shifts of the cyclotron resonance peaks shortly after generation of photoexcited carriers. Based on the plasma shift of the cyclotron resonance, we evaluate the carrier density and quantitatively discuss the interaction between free carriers and excitons. With increasing time delay, the hole resonance asymptotically reaches the constant value corresponding to an effective mass of 0.575 times the free electron mass, providing a definitive answer to the controversy on the effective mass of holes in cuprous oxide.

DOI
Formation of nanoparticles of organic molecules by liquid laser ablation

Ikuko Akimoto, Masahiro Ohata, Nobuhiko Ozaki, Gu Ping

Materials Research Society Symposium Proceedings 1455 55 - 60 2012 [Refereed]

　View Summary

We carried out laser ablation of three organic molecules, rubrene (Rb), Oralith Brilliant Pink R (BP) and quinacridonequinone (QQ) in a poor solvent, water. As a result, nanoparticles of BP and QQ were formed, but those of Rb were not formed because of photodissociation. For a rigid molecule, QQ, optical properties of colloidal solutions were investigated in relation to the size of the included nanoparticles. A linear correlation between the blue shift of the absorption peak energy and the decrease in the diameter of the nanoparticles was found, indicating that the nanoparticle diameter can be easily estimated from the absorption spectrum of a colloidal solution. From the solution, a nanoparticle film was fabricated on an electrode by the electrophoretic deposition method. © 2012 Materials Research Society.

DOI
Investigation of yellow emission from a co-polymer utilizable as an emitting material for white OLED

I. Akimoto, S. Tsuzuki, H. Uzawa, M. Hinatsu, Y. Nishide, H. Osuga, H. Sakamoto

PROCEEDINGS OF THE 16TH INTERNATIONAL CONFERENCE ON LUMINESCENCE AND OPTICAL SPECTROSCOPY OF CONDENSED MATTER: POSTERS ( ELSEVIER SCIENCE BV ) 29 46 - 49 2012 [Refereed]

　View Summary

A novel co-polymer, P-PBTx, is a promising emitting material for white OLED. Appearance of unexpected yellow emission in EL is a key point, but its origin has not been clarified yet. Photo-luminescence properties of the copolymer were investigated in comparison with those of its monomer as well as two component molecules. An PL yellow band was also observed even in a film of a chromophore molecule at low temperature, depending on the position of an inhomogeneous film. Then, modified molecule center such as a dimer or an excimer of neighboring chromophores is a possible origin of the PL yellow emission.

DOI
Twisted molecular geometry and localized electronic structure of the triplet excited gem-diphenyltrimethylenemethane biradical: substituent effects on thermoluminescence and related theoretical calculations

Yasunori Matsui, Hayato Namai, Ikuko Akimoto, Ken-ichi Kan'no, Kazuhiko Mizuno, Hiroshi Ikeda

TETRAHEDRON ( PERGAMON-ELSEVIER SCIENCE LTD ) 67 ( 38 ) 7431 - 7439 2011.09 [Refereed]

　View Summary

Substituent effects on the energies of electronic transitions (ETs) between the triplet excited and ground states of gem-diphenyltrimethylenemethane biradicals ((3)2a center dot center dot) were explored by using thermoluminescence (TL) spectroscopy and density functional theory (DFT) including time-dependent (TD) DFT. Linear free energy (Hammett) analyses of TL energies of a variety of para-substituted aryl derivatives of (3)2 center dot center dot* gave reasonable correlations with the substituent constant, sigma(center dot). The slope of Hammett plots of the data are nearly identical to one obtained from a similar analysis of the photoluminescence (PL) energies of the structurally-related 1,1-diarylethyl radicals (3 center dot*). The results suggest that TL of (3)2 center dot center dot* and PL of 3 center dot* derive from a common diarylmethyl radical fluorophore. This interpretation is also supported by the DFT and TDDFT calculated electronic structures and ET energies of (3)2a center dot center dot and 3 center dot. Thermodynamic and kinetic analyses of the charge recombination (CR) process between 2 center dot+ and 1, which generates (3)2 center dot center dot*, revealed that substituents not only alter the TL energies but also the TL intensities of (3)2 center dot center dot*. The observations made in this effort demonstrate that (3)2 center dot center dot* as well as (3)2a center dot center dot and 2 center dot+ have greatly twisted molecular geometries and highly localized electronic structures. (C) 2011 Elsevier Ltd. All rights reserved.

DOI
Origin of yellow emission in white OLED with single emitting material

Ikuko Akimoto, Sayaka Tsuzuki, Hidetoshi Uzawa, Masako Hinatsu, Yosuke Nishide, Hideji Osuga, Hidefumi Sakamoto

PHYSICA STATUS SOLIDI C: CURRENT TOPICS IN SOLID STATE PHYSICS, VOL 8, NO 1 ( WILEY-V C H VERLAG GMBH ) 8 ( 1 ) 2011 [Refereed]

　View Summary

The photo-luminescence (PL) and electro-luminescence (EL) of a novel organic material, benzodithiophene/triphenylamine copolymer (P-PBTx, n=5-6) were investigated. The PL exhibited wide blue emission at room temperature, which is attributed to fluorescence from a chromophore, benzodithiophene moiety, from results of spectral analysis and decay profile. The EL, however, exhibited white emission consisting of wide blue (B) and yellow (Y) bands, although it was prepared with P-PBTx as a single emitting material. The Y-band was slightly observed at 7 K and found to possess long lived component of 19 ms lifetime. The origin of the Y-band efficiently stimulated by carrier injection is supposed to be a charge-transfer state between benzodithiophene and triphenylamine moieties. The long lived component could be explained by lowered transition probability caused by charge separation. (c) 2010 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim

DOI
X-ray-Triggered Thermoluminescence and Density Functional Theory Characterization of a gem-Diphenyltrimethylenemethane Biradical

Hiroshi Ikeda, Yasunori Matsui, Ikuko Akimoto, Ken-ichi Kan'no, Kazuhiko Mizuno

AUSTRALIAN JOURNAL OF CHEMISTRY ( CSIRO PUBLISHING ) 63 ( 9 ) 1342 - 1347 2010 [Refereed]

　View Summary

Thermoluminescence (TL) from the excited triplet state of a gem-diphenyltrimethylenemethane biradical ((3)4(center dot center dot)*) is triggered by X-irradiation at 77 K followed by annealing to similar to 140 K. The new X-irradiation method reported here is simpler and more convenient than the previously employed gamma-irradiation method. The TL spectrum of (3)4(center dot center dot)* is similar to the photoluminescence spectrum of the 1,1-diphenylethyl radical (5(center dot)). The results of density functional theory (DFT) and time-dependent-DFT calculations of the ground state biradical (3)4(center dot center dot) suggest that no significant electronic interaction takes place between the diphenylmethyl and allyl radical moieties owing to its twisted geometry. Accordingly, the results also suggest that the excited state biradical (3)4(center dot center dot)* has a similar molecular geometry and electronic structure as the triplet ground state. Both the experimental and computational results obtained for (3)4(center dot center dot) and 5(center dot) confirm that the main fluorophore of (3)4(center dot center dot)* is the diphenylmethyl radical moiety.

DOI
Vibrational, electronic, and vibronic excitations of polar C60F18 molecules: Experimental and theoretical study

A. A. Popov, V. M. Senyavin, V. I. Korepanov, I. V. Goldt, A. M. Lebedev, V. G. Stankevich, K. A. Menshikov, N. Yu. Svechnikov, O. V. Boltalina, I. E. Kareev, S. Kimura, O. Sidorova, K. Kanno, I. Akimoto

PHYSICAL REVIEW B ( AMER PHYSICAL SOC ) 79 ( 4 ) 2009.01 [Refereed]

　View Summary

Polarized optical conductivity spectra in the IR and visible range and variable-temperature photoluminescence spectra of the C60F18 single crystals in the 4-300 K temperature range are reported. Density-functional theory (DFT) calculations of vibrational spectra and time-dependent DFT calculations of the excitation energies of the C60F18 molecule are performed to interpret experimentally observed phenomena. Orientation of the C-3v-symmetric C60F18 molecules in the single crystal is revealed by comparison of the experimental polarized IR spectra and vibrational DFT calculations. A(2) symmetry is assigned to the lowest energy singlet excited state of C60F18, and hence pure electronic S-0 -> S-1 excitation is found to be dipole forbidden. Fine vibronic structure found at low temperature is interpreted in terms of Herzberg-Teller and Franck-Condon mechanisms. Considerable similarity with vibronic spectra of C-60 is found and explained by presumable localization of the lowest energy electronic excitation of C60F18 on the fullerenelike part of the molecule.

DOI
Up to 30 times enhancement of deep UV emission at room temperature by prolonged excitation of localized exciton in NaCl: I crystal

Ikuko Akimoto, Masahiro Shimozato, Ken-Ichi Kan'No

Physica Status Solidi (C) Current Topics in Solid State Physics 6 ( 1 ) 342 - 345 2009 [Refereed]

　View Summary

A material emitting DUV light at room temperature is promising for an application to a new laser action. We report the remarkable phenomena that deep ultra-violet (DUV) emission at 220 nm, so-called NE emission, in NaCl:I crystal is enhanced up to 30 times at room temperature by prolonged excitation of the localized exciton. Such an accumulated effect is kept even if the excitation is interuped for a few minutes but is completely reset by white light irradiation at room temperature. The phenomena are discussed considering thermal ionization of iodine anion by the VUV light excitation, trapping of dissociated electrons in hole centers and recombination of electrons and iodine hole centers. © 2009 WILEY-VCH Verlag GmbH &amp
Co. KGaA.

DOI
Up to 30 times enhancement of deep UV emission at room temperature by prolonged excitation of localized exciton in NaCl:I crystal

Ikuko Akimoto, Masahiro Shimozato, Ken-ichi Kan'no

PHYSICA STATUS SOLIDI C - CURRENT TOPICS IN SOLID STATE PHYSICS, VOL 6, NO 1 ( WILEY-V C H VERLAG GMBH ) 6 ( 1 ) 342 - 345 2009 [Refereed]

　View Summary

A material emitting DUV light at room temperature is promising for an application to a new laser action. We report the remarkable phenomena that deep ultra-violet (DUV) emission at 220 urn, so-called NE emission, in NaCl:I crystal is enhanced up to 30 times at room temperature by prolonged excitation of the localized exciton. Such an accumulated effect is kept even if the excitation is interuped for a few minutes but is completely reset by white light irradiation at room temperature. The phenomena are discussed considering thermal ionization of iodine anion by the VUV light excitation, trapping of dissociated electrons in hole centers and recombination of electrons and iodine hole centers. (C) 2009 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim

DOI
Multifrequency EPR analysis of the positive polaron in I-2-doped poly(3-hexylthiophene) and in poly[2-methoxy-5-(3,7-dimethyloctyloxy)]-1,4-phenylenevinylene

Aranzazu Aguirre, Peter Gast, Sergey Orlinskii, Ikuko Akimoto, Edgar J. J. Groenen, Hassane El Mkami, Etienne Goovaerts, Sabine Van Doorslaer

PHYSICAL CHEMISTRY CHEMICAL PHYSICS ( ROYAL SOC CHEMISTRY ) 10 ( 47 ) 7129 - 7138 2008 [Refereed]

　View Summary

The W-band continuous-wave electron paramagnetic resonance (EPR) analysis of chemically induced polarons in drop-cast and spin-coated polyphenylenevinylene-type and polythiophene-type polymer films reveals rhombic g tensors in both cases. The dependence of the W-band EPR signals on the orientation of the spin-coated films with respect to the magnetic field indicates a high degree of backbone alignment with the substrate and allows a partial assignment of the g tensor orientation. The derived molecular orientations of the polymer chains in the spin-coated films show clear differences between the two types of polymers. The proton hyperfine interactions obtained from X-band HYSCORE (hyperfine sublevel correlation) and Q- and W-band pulsed ENDOR (electron-nuclear double resonance) experiments are interpreted in terms of earlier theoretical studies on the extension of the polarons.

DOI
Investigation of optical properties of fluorofullerene C60F18 single crystals

A. M. Lebedev, K. A. Menshikov, N. Yu. Svechnikov, V. G. Stankevich, O. V. Boltalina, I. V. Goldt, S. Kimura, T. Nishi, I. Akimoto, K. Kan'no

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT ( ELSEVIER SCIENCE BV ) 575 ( 1-2 ) 96 - 98 2007.05

　View Summary

For the first time optical investigations of C60F18 single crystals were carried out in the temperature region (300-4) K. Intensity of the obtained photoluminescence (PL) spectra has a strong brake near 100 K. At low temperature the clear fine structure of luminescence spectra is observed. The reflectance spectra have shown main changes for the energy about 4 eV (typical for pi-pi* transitions), and for E > 8 eV for deeper electronic levels. (C) 2007 Elsevier B.V. All rights reserved.

DOI
Decay dynamics of photo-luminescence in tris(2-phenylpyridine)iridium phosphor

I. Akimoto, K. Nagao, T. Tashiro, H. Osuga, K. Tanaka, K. Kan'no

JOURNAL OF LUMINESCENCE ( ELSEVIER SCIENCE BV ) 122 ( 1-4 ) 440 - 443 2007.01 [Refereed]

　View Summary

The phosphor material, tris(2-phenylpyridine)iridium (Ir(ppy)(3)), has attracted much attention as an emitter of highly efficient electrophosphorescent devices. In the present work, decay dynamics of photo-luminescence and its temperature dependence have been investigated in the Ir(ppy)(3) emitting center. From the analyses of luminescent decay profiles and time-resolved luminescent spectra, thermally activated population transfer from every triplet sub-level to a singlet state is suggested. (c) 2006 Elsevier B.V. All rights reserved.

DOI
Magnetic field dependence of triplet state in iridium complex phosphor

Ikuko Akimoto, Kazuhiro Nagao, Ken-ichi Kan'no

PHYSICA STATUS SOLIDI C - CURRENT TOPICS IN SOLID STATE PHYSICS, VOL 4, NO 3 ( WILEY-V C H VERLAG GMBH ) 4 ( 3 ) 813 - + 2007 [Refereed]

　View Summary

The magnetic field dependence of photo-luminescent spectrum in tris (2-phenylpyridine) iridium complex is reported. Upon applying magnetic field from 0 to 6 T, remarkable change of spectral band shape was observed at 4.2 K. Comparing the spectral variation under magnetic field with the time resolved spectra, it is clarified that the luminescence involves distinctive contributions from, at least, two spectral sets of zero-field-split triplet sub-levels, and an additional fast decay component which is presumably associated with the nearly singlet manifold. (c) 2007 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.

DOI
Photoluminescence and relaxation processes in the optically excited states of fluorinated fullerenes

I. Akimoto, M. Mori, K. Kan'No

AIP Conference Proceedings 786 33 - 36 2005.09

　View Summary

Origin of the photoluminescence and relaxation processes in the optically excited states of fluorinated fullerenes has been investigated by site selective excitation and time resolved spectroscopy. The intrinsic luminescence consists of at least two components with the different kind of decay kinetics. One of which is of single exponential with τd ∼ 6 ns and the other is of non-exponential but proportional to t-1. The latter component seems to be recombination luminescence due to an intermolecular polaron, in which an electron and a hole are separately localized with accompanying some structural relaxation. © 2005 American Institute of Physics.

DOI
Photo-luminescence properties and exciton-carrier interaction in 1,2-diarylethylene derivatives films

Akimoto, I, KI Kan'no, H Osuga, K Tanaka

JOURNAL OF LUMINESCENCE ( ELSEVIER SCIENCE BV ) 112 ( 1-4 ) 341 - 344 2005.04

　View Summary

New organic materials, 1,2-diarylethylene derivatives consisting of ortho-fused heterocyclic system like benzodithiophene (BDT) have been reported as candidates of thermally stable fluorescent materials, promisingly used in organic electro-lummescence devices. Optical properties of the compound possessing methyl or phenyl substituents in ethylene moiety are investigated. Photo-luminescence (PL) is observed at blue-green region accompanied by molecular vibrational structures. The quantum efficiency of the fluorescence in H-BDT toluene solution is estimated as 0.32 at room temperature. On the basis of quantum chemical calculation, the molecular structure and electronic structure are discussed. We also investigated the electronic and optical properties of H-BDT thin films prepared by sublimation method. For a preliminary single-layered device (fTO/H-BDT/Al:Mg), the I-V property and the effect of applied electric field on PL intensity were investigated and a possibility of the exciton-carrier interaction in the organic layer was pointed out. (c) 2004 Elsevier B.V. All rights reserved.

DOI
Luminescent decay kinetics in a quasi-one-dimensional crystal, C5H10NH2PbI3

Akimoto, I, M Sakai, K Kan'no

JOURNAL OF LUMINESCENCE ( ELSEVIER SCIENCE BV ) 108 ( 1-4 ) 31 - 35 2004.06 [Refereed]

　View Summary

Photoluminescence and its decay kinetics for a single crystal of piperidinium triiodoplumbate C5H10NHPbI3 have been investigated. The luminescent spectrum exhibits a single emission band at 2.1 eV with FWHM 0.3 eV, which has been attributed to a self-trapped exciton. The luminescent kinetics is discussed for the temperature range below 70K, where the integrated luminescent intensity is almost constant. The exponential decay time tau(d) apparently decreases from 44 mus at 5 K to similar to2 mus at 70 K while the initial intensity I-0 increases by one order of magnitude, so that the product I-0 x tau(d) is almost constant. Such a phenomenon is explained by assuming that the initial state of the luminescence consists of at least two sub-levels, between which population transfer is thermally achieved with an activation energy of 6 meV. (C) 2004 Elsevier B.V. All rights reserved.

DOI
Photoluminescence and Near-Edge Optical Absorption in the Low-Temperature Phase of Pristine C60 Single Crystals

Ikuko Akimoto, Ken-Ich Kan'no

Journal of the Physical Society of Japan 71 ( 2 ) 630 - 643 2002.02 [Refereed]

　View Summary

Photoluminescence and near-band-edge electronic structure of pristine C60 single crystals have been investigated in the low temperature phase below 90 K. By applying two-photon excitation spectroscopy, a monomorphic spectrum is extracted from the several crystals which exhibit apparent diversity for ordinary one-photon excitation. Also, a localized absorption band with discrete vibronic sub-peaks is clearly confirmed at 1.685 eV below the fundamental absorption edge (1.815 eV). Overall features of the luminescence-line-narrowing spectrum obtained by site-selective excitation into the localized absorption band are assigned to the vibronic progressions coupled with the Raman-active gerade-symmetry modes of individual C60 molecules (i.e., eight h g, two ag, and their combinations), accompanied by phonon-sidebands due to cooperative librations and intermolecular translations. The origin of photoluminescence and its relaxation kinetics are fully discussed in connection with the inhomogeneously broadened localized states which are presumably due to perturbed Frenkel excitons stabilized with symmetry-lowering by adjacent intrinsic defect or some lattice disorder.

DOI
Dynamics of the photoinduced ionic-to-neutral phase transition in tetrathiafulvalene-p-chloranil studied by femtosecond time-resolved reflection spectroscopy

I. Akimoto, K. Tanimura, S. Koshihara

Phase Transitions 75 ( 7-8 ) 815 - 822 2002.01 [Refereed]

　View Summary

Changes in reflection spectra were probed to study the dynamics of photoinduced transformation from ionic to neutral phases in tetrathiafulvalene- p-chloranil crystals. The results have revealed the formation of the precursor of metastable N-phase domains, dynamical lattice relaxation of and proliferation during phase transformation.

DOI
Femtosecond time-resolved spectroscopy of photoinduced ionic-to-neutral phase transition in tetrathiafulvalen-p-chloranil crystals

K Tanimura, Akimoto, I

JOURNAL OF LUMINESCENCE ( ELSEVIER SCIENCE BV ) 94 483 - 488 2001.12 [Refereed]

　View Summary

Recent experimental results are reviewed of the photoinduced phase transformation between ionic and neutral phases in tetrathiafulvalen-p-chloranil crystals. Spectroscopic studies have revealed different features of Frenkel-type and charge transfer (CT)-type excited states in inducing photo-induced structural phase transition: the transition can be induced only above threshold-excitation intensities in the case of CT excitation. The thresholds imply that non-linear processes of CT excited states are crucial in the transition. On the other hand, time-resolved studies have demonstrated a dynamical aspect of the transition. optical reflectance signals that probe the evolution of the transition show dumped-oscillatory changes before establishing N-phase domains at around 100 ps after excitation. Mechanism of the transition has been discussed based on these results. (C) 2001 Elsevier Science B.V. All rights reserved.
Origin of photoluminescence and spectral analysis of vibronic structure resolved in C-60 single crystals

Akimoto, I, K Kan'no

JOURNAL OF LUMINESCENCE ( ELSEVIER SCIENCE BV ) 87-9 788 - 790 2000.05 [Refereed]

　View Summary

Origin of the photoluminescence and band-edge electronic structure of pristine C-60 single crystals have been studied in the temperature range from 4 to 300 K by applying several spectroscopic techniques such as absorption, photoluminescence under one-photon and two-photon excitation, and site-selective luminescence line narrowing spectroscopy. Photo-absorption characterized by the prominent vibrational structures is found around 1.688 eV below the fundamental absorption edge (1.814 eV), which apparently exhibits mirror images of the well-known spectrum of photoluminescence called type A. Upon selective excitation into the band, luminescence line narrowing is observed: The spectra consists of sharp vibrational lines attributed to the progressions of eight H-g and two A(g) modes and libron sidebands. These results indicate that type A luminescence originates from the inhomogeneously broadened localized state which may be stabilized by symmetry lowering and local rotational disorder spread over more than one molecule. (C) 2000 Elsevier Science B.V. All rights reserved.
Luminescence from C-60 single crystals in glassy phase under site-selective excitation

Akimoto, I, M Ashida, K Kan'no

CHEMICAL PHYSICS LETTERS ( ELSEVIER SCIENCE BV ) 292 ( 4-6 ) 561 - 566 1998.08 [Refereed]

　View Summary

Luminescence from C-60 single crystals has been investigated at liquid He temperature under selective excitation into the tail part below the fundamental absorption edge. Luminescence line narrowing is observed for resonant excitation, in which a characteristic vibrational quantum is found similar to 420 cm(-1) in the excited state. It is revealed that the spectrum which has been known as photo-luminescence from C-60 single crystals is an superposition of site-selective luminescence from several localized states. Such inhomogeneity is most likely to arise from fluctuation of the intermolecular orientational correlation in a pair of C-60 molecules over which the excitation is delocalized. (C) 1998 Elsevier Science B.V. All rights reserved.
Relaxation dynamics into two types of luminescence states in C-60 single crystals below 80 K

Akimoto, I, J Azuma, M Ashida, K Kan'no

JOURNAL OF LUMINESCENCE ( ELSEVIER SCIENCE BV ) 76-7 206 - 210 1998.02 [Refereed]

　View Summary

Luminescence spectra from pure C-60 Single crystals and their time behavior have been studied in the temperature range below 80 K under the excitation into two distinctive energy ranges. In case of the excitation into the higher-lying band slates, two kinds of fluorescence bands, called types A and B, were observed with their onsets at 733 and 684 nm around LHeT. These bands exhibit the anti-correlated temperature dependence, indicating thermally activated population transfer from the initial state of type B to that of type A. On the other hands, the selective excitation into the tail part (similar to 733 nm) below the fundamental absorption edge stimulates not only a series of Raman lines but also the resonant luminescence which evolves into the type A luminescence with inhomogeneous behavior. It is noteworthy that for just resonance a novel vibronic structure with Delta similar to 120 cm(-1) is clearly resolved. The present study strongly suggests that fluctuation in the local intermolecular orientational correlation of molecules is essential to the relaxation processes of photo-excited states in C-60 Single crystal. (C) 1998 Elsevier Science B.V. All rights reserved.
Pulse-annealing study of photo-stimulated luminescence and trapped-hole states in BaFBr:Eu2+

A Ohnishi, Akimoto, I, K Kanno, Y Iwabuchi, N Mori

JOURNAL OF LUMINESCENCE ( ELSEVIER SCIENCE BV ) 72-4 775 - 777 1997.06 [Refereed]

　View Summary

Photo-stimulated luminescence (PSL) with F(Br-)-band light was studied with a pulse annealing technique in the X-rayed BaFBr and BaFBr:Eu2+ crystals. It was found that the PSL band due to Eu3+ centers in BaFBr:Eu2+ is kept unchanged for pulse annealing up to 280 K, though the one due to O- centers in BaFBr comes to disappear after pulse annealing around 200 K. This clearly indicates that Eu2+ ion plays an important role as the hole-trap in the image storage.
Optically detected magnetic resonance and zero-field splitting energy of the self-trapped exciton in NaBr

K. Kan'no, M. Shirai, T. Matsumoto, I. Akimoto

Materials Science Forum ( Trans Tech Publications Ltd ) 239-241 569 - 572 1997

　View Summary

The triplet states of the type I self-trapped exciton (STE) in NaBr have been studied using a pulsed X-band (9.4 GHz) ODMR technique for the magnetic field H//[110] under the two-photon excitation with KrF laser pulses: An EPR signal from the Mz=0 sublevel in the [110]-oriented STE was time-resolved at 5.4 K, by monitoring a transient change induced in the decay curve of triplet emission ("π band" at 4.6 eV) when a microwave pulse (10 μs duration) was applied at 20 μs after the laser excitation. The low-field transition of (Mz=0 ⇒ Mz=-1) was confirmed to appear around 1.44T as a broad EPR band with partially resolved seven lines. The Zero-field splitting was unambiguously determined to be D=0.2 meV, in good agreement with our previous study of magnetic field effect on luminescence lifetimes. The D value thus determined is one order of magnitude larger than that of the type III STE in KBr (0.03 meV). Such a large D value comes most likely from a geometry of on-center type, i.e. [VK + e] configuration, though it is still open problem whether the type I STE in NaBr strictly keeps the D2h symmetry.

DOI
Emission spectra and decay characteristics in photo-stimulated (CnH2n+1NH3)2CdCl4 : n=1, 2, 3

A. Ohnishi, T. Yamada, T. Yoshinari, I. Akimoto, K. Kan'no, T. Kamikawa

Journal of Electron Spectroscopy and Related Phenomena ( Elsevier ) 79 163 - 166 1996 [Refereed]

　View Summary

Recombination luminescence from (CnH2n+1NH3)2CdCl4 : n=1, 2, 3 has been studied using synchrotron radiation pulses. A largely stokes-shifted emission band was found to appear at 2.50eV for the n=2 crystal when excited into the excitonic absorption range, while at 2.25eV when excited into the band-to-band transition range. Decay curves of both bands are composed of fast and slow components. Non-exponential decay of slow components suggests that the 2.25eV band is induced by tunneling recombination between self-trapped electrons and self-trapped holes. As for the 2.50eV band, recombination of correlated electron-hole pairs with strong lattice relaxation is supposed.

DOI

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Books etc

ダイヤモンドをよく知るために -ダイヤモンドの光物性計測（3）発光と内部量子効率

小西一貴, 秋元郁子, 中暢子( Part： Joint author)

ニューダイヤモンドフォーラム Diamond 145, pp. 34-37 2022.03
ダイヤモンドをよく知るために -ダイヤモンドの光物性計測（2）励起子と電荷キャリヤの共存状態

秋元郁子, 濵端沙耶香, 中暢子( Part： Joint author)

ニューダイヤモンドフォーラム New Diamond 144, pp. 43-47 2022.01
ダイヤモンドをよく知るために -ダイヤモンドの光物性計測（1）基礎光学吸収過程

中暢子, 小西一貴, 秋元郁子( Part： Joint author)

ニューダイヤモンドフォーラム New Diamond 143, pp. 34-37 2021.10
光物性計測からわかるダイヤモンドのキャリヤ物性

中暢子, 下村尊明, 秋元郁子( Part： Joint author)

ニュータイヤモンドフォーラム 2019.10
Intrinsic carrier parameters and optical carrier injection method in high-purity diamonds

Ikuko Akimoto, Nobuko Naka( Part： Joint author, Work： All)

IntechOpen 2019
マイクロ波共振器を用いた太陽電池材料における光キャリアの時間分解計測

秋元郁子( Part： Sole author)

電子スピンサイエンス学会学会誌第16巻30号 2018.04
Application of liquid laser ablation: organic nanoparticle formation and hydrogen gas generation

Ikuko Akimoto, Nobuhiko Ozaki( Part： Joint author, Work： Ch.12, In "Applications of Laser Ablation", (Ed. by D. Yang))

INTECH 2016
時間分解ESR装置を用いた光キャリアのサイクロトロン共鳴観測

秋元郁子( Part： Sole author, Work： pp.98-101)

電子スピンサイエンス学会学会誌第8巻15号 2010

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Misc

25aAC-7 Free carrier generetion at the excitonic resonance in cuprous oxide

Naka N., Torai S., Akimoto I., Shirai M.

Meeting abstracts of the Physical Society of Japan ( The Physical Society of Japan (JPS) ) 67 ( 1 ) 796 - 796 2012.03
23pRB-10 Time-resolved cyclotron resonance in cuprous oxide : Excitation wavelength dependence

Akimoto I., Naka N., Shirai M.

Meeting abstracts of the Physical Society of Japan ( The Physical Society of Japan (JPS) ) 66 ( 2 ) 782 - 782 2011.08
25pPSB-52 Hyperfine interaction with distal ^<13>C nuclei on the Nitrogen-Vacancy Center

Akimoto Ikuko

Meeting abstracts of the Physical Society of Japan ( The Physical Society of Japan (JPS) ) 65 ( 2 ) 737 - 737 2010.08
21aHL-6 Cyclotron resonance in cuprous oxide observed by time-resolved electron spin resonance

Naka N., Akimoto I., Shirai M., Kan'no K.

Meeting abstracts of the Physical Society of Japan ( The Physical Society of Japan (JPS) ) 65 ( 1 ) 753 - 753 2010.03
22pPSB-5 Pulse ESR on the Nitrogen-Vacancy Center in type-Ib diamonds III

Akimoto Ikuko, Matsuoka Youhei, Kan'no Ken-ichi

Meeting abstracts of the Physical Society of Japan ( The Physical Society of Japan (JPS) ) 65 ( 1 ) 782 - 782 2010.03
27aPS-55 ESR signals on the charge-ordered state of a Ti_4O_7 crystal

Akimoto Ikuko, Watanabe Masayuki

Meeting abstracts of the Physical Society of Japan ( The Physical Society of Japan (JPS) ) 64 ( 2 ) 658 - 658 2009.08
28pPSB-8 Excitation power dependence of luminescence in In_xGa_<1-x>N/GaN multipule quantum wells

Fukuda Hiroya, Akimoto Ikuko, Kan'no Ken-ichi

Meeting abstracts of the Physical Society of Japan ( The Physical Society of Japan (JPS) ) 64 ( 1 ) 754 - 754 2009.03
28pPSA-36 Origin of recombination Luminescence in PbCl_2 and visible light irradiation effects

Ito Yohei, Akimoto Ikuko, Kan'no Ken-ichi

Meeting abstracts of the Physical Society of Japan ( The Physical Society of Japan (JPS) ) 64 ( 1 ) 744 - 744 2009.03
28pPSA-38 Pulse ESR on the Nitrogen-Vacancy Center in type-Ib diamonds II

Matsuoka Youhei, Akimoto Ikuko, Kan'no Ken-ichi

Meeting abstracts of the Physical Society of Japan ( The Physical Society of Japan (JPS) ) 64 ( 1 ) 745 - 745 2009.03
22aPS-95 Observation of spin systems by Locked FID detection

Akimoto I., Blok H., Milikisyants S., Schmidt J.

Meeting abstracts of the Physical Society of Japan ( The Physical Society of Japan (JPS) ) 63 ( 2 ) 672 - 672 2008.08
22aPS-48 Phosphorescence properties of iridium complex compounds in blue region

Uzawa Hidetoshi, Akimoto Ikuko, Kan'no Ken-ichi

Meeting abstracts of the Physical Society of Japan ( The Physical Society of Japan (JPS) ) 63 ( 2 ) 661 - 661 2008.08
22aPS-35 Pulse ESR on the Nitrogen-Vacancy Center in type-Ib diamonds

Matsuoka Youhei, Akimoto Ikuko, Kan'no Ken-ichi

Meeting abstracts of the Physical Society of Japan ( The Physical Society of Japan (JPS) ) 63 ( 2 ) 658 - 658 2008.08
19pPSB-39 The effects of VUV light irradiation on the NE emission in NaCl:l

Shimozato M., Akimoto I., Kan'no K.

Meeting abstracts of the Physical Society of Japan ( The Physical Society of Japan (JPS) ) 62 ( 1 ) 738 - 738 2007.02
20pZC-12 High field optically detected magnetic resonance of STEs in alkali halide crystals

Shirai M., Akimoto I., Tanaka K., Kan'no K.

Meeting abstracts of the Physical Society of Japan ( The Physical Society of Japan (JPS) ) 62 ( 1 ) 753 - 753 2007.02
25aPS-53 Pump-probe spectroscopy using two kinds of μ-wave pulses with different frequencies applied for the coupled spin system of an electron and nucleus

KAN'NO Ken-ichi, AKIMOTO Ikuko

Meeting abstracts of the Physical Society of Japan ( The Physical Society of Japan (JPS) ) 61 ( 2 ) 609 - 609 2006.08
25aPS-51 Photo luminesence properties of deep ultraviolet luminescence in alkali chloride doped with I^-

Shimozato Masahiro, Akimoto Ikuko, Kan'no Ken-ichi

Meeting abstracts of the Physical Society of Japan ( The Physical Society of Japan (JPS) ) 61 ( 2 ) 609 - 609 2006.08
26aWH-11 Pulse ESR of F-centers: ESEEM and ESE-ELDOR experiments

KAN'NO Ken-ichi, AKIMOTO Ikuko

Meeting abstracts of the Physical Society of Japan ( The Physical Society of Japan (JPS) ) 61 ( 2 ) 629 - 629 2006.08
27pRE-12 Dynamics of phosphorescence in iridium complex compounds

Akimoto Ikuko, Nagao Kazuhiro, Kan'no Ken-ichi

Meeting abstracts of the Physical Society of Japan ( The Physical Society of Japan (JPS) ) 61 ( 1 ) 720 - 720 2006.03
28aPS-41 Photo induced Electron spin resonance of SrTiO_3 single crystal

Akatsuka N., Akimoto I., Kan'no K.

Meeting abstracts of the Physical Society of Japan ( The Physical Society of Japan (JPS) ) 61 ( 1 ) 733 - 733 2006.03
27pRC-10 Photo-carrier generation and its transport mechanism in C_<60> single crystal

Tanaka Ryota, Akimoto Ikuko, Kan'no Ken-ichi

Meeting abstracts of the Physical Society of Japan ( The Physical Society of Japan (JPS) ) 61 ( 1 ) 814 - 814 2006.03
28aWN-4 Photo-excited state of fluorinated fullerene poly-crystals

Akimoto I., Mori M., Kan'no K.

Meeting abstracts of the Physical Society of Japan ( The Physical Society of Japan (JPS) ) 59 ( 1 ) 841 - 841 2004.03
Luminescent Decay Kinetics in a Quasi-one-dimensional Crystal, C_5H_<10>NH_2Pbl_3

Akimoto I., Sakai M., Kanno K.

Meeting abstracts of the Physical Society of Japan ( The Physical Society of Japan (JPS) ) 58 ( 2 ) 672 - 672 2003.08
Femtosecond time-resolved study of photoinduced ionic-to-neutral phase transition in TTF-CA IV

Tanimura K., Akimoto I.

Meeting abstracts of the Physical Society of Japan ( The Physical Society of Japan (JPS) ) 56 ( 2 ) 609 - 609 2001.09
Wavelength dependence of photo-induced ionic-to-neutral phase transition for intramolecular excitation in TTF-CA

Suzuki Y., Akimoto I., Tanimura K., Koshihara S., Tokura Y.

Meeting abstracts of the Physical Society of Japan ( The Physical Society of Japan (JPS) ) 56 ( 1 ) 673 - 673 2001.03
Femtosecond Spectroscopy of Photoinduced Phase Transition in TTF-CA III

Tanimura K., Suzuki Y., Akimoto I., Koshihara S., Tokura Y.

Meeting abstracts of the Physical Society of Japan ( The Physical Society of Japan (JPS) ) 56 ( 1 ) 667 - 667 2001.03
Femto-second spectroscopy of the optical induced ion-to-neutral phase transition in TTF-CA II

Kondo T., Akimoto I., Tanimura K., Koshihara S., Tokura Y.

Meeting abstracts of the Physical Society of Japan ( The Physical Society of Japan (JPS) ) 55 ( 2 ) 619 - 619 2000.09
Femto-second spectroscopy of the optical induced ion-to-neutral phase transition in TTF-CA I

Akimoto I., Tanimura K., Koshihara S., Tokura Y.

Meeting abstracts of the Physical Society of Japan ( The Physical Society of Japan (JPS) ) 55 ( 2 ) 618 - 618 2000.09
24aYC-5 lonic-to-neutral phase transition induced by CT-exciton excitation in TTF-CA V

Baba D, Akimoto I, Tanimura K, Koshiahra S, Tokura Y

Meeting abstracts of the Physical Society of Japan ( The Physical Society of Japan (JPS) ) 54 ( 2 ) 628 - 628 1999.09
28a-ZG-11 Fundamental Optical Properties of Trans-Azobenzene Single Crystals

Takahashi N., Akimoto I., Tanaka K.

Meeting abstracts of the Physical Society of Japan ( The Physical Society of Japan (JPS) ) 54 ( 1 ) 181 - 181 1999.03
Energy structure below the fundamental absorption edge in C_<60> single crystals

AKIMOTO I., TANAKA K., KAN'NO K.

Meeting abstracts of the Physical Society of Japan ( The Physical Society of Japan (JPS) ) 53 ( 2 ) 311 - 311 1998.09
Luminescence spectra from C_<60> single crystals under two-photon excitation

AKIMOTO I., ASHIDA M., KAN'NO K.

Meeting abstracts of the Physical Society of Japan ( The Physical Society of Japan (JPS) ) 53 ( 1 ) 228 - 228 1998.03
8a-G-3 Photo-excited states of quasi-1D semiconductor piperidinium trihaloplumbates

Azuma J., Akimoto I., Tanaka K., Kan'no K.

Meeting abstracts of the Physical Society of Japan ( The Physical Society of Japan (JPS) ) 52 ( 2 ) 247 - 247 1997.09
7a-C-7 Luminescence spectra of C_<60> single crystals under the site selective excitation at glassy phase

Akimoto I., Azuma J., Ashida M., Kan'no K.

Meeting abstracts of the Physical Society of Japan ( The Physical Society of Japan (JPS) ) 52 ( 2 ) 289 - 289 1997.09
31p-D-11 Luminescence spectra of C_<60> single crystals and effect of resonant excitation near absorption edge III

Akimoto I, Azuma J, Ashida M, Kan'no K

Meeting abstracts of the Physical Society of Japan ( The Physical Society of Japan (JPS) ) 52 ( 1 ) 299 - 299 1997.03
31p-D-10 Luminescence spectra of C_<60> single crystals and effect of resonant excitation near absorption edge II

Kan'no K, Akimoto I, Ashida M

Meeting abstracts of the Physical Society of Japan ( The Physical Society of Japan (JPS) ) 52 ( 1 ) 298 - 298 1997.03
Luminescent spectra of C_<60> single crystals and effect of resonant excitation near absorption edge

Akimoto I., Ashida M., Kan'no K.

Abstracts of the meeting of the Physical Society of Japan. Sectional meeting ( The Physical Society of Japan (JPS) ) 1996 ( 2 ) 414 - 414 1996.09
Optical Spectra of fluorinated fullerenes

Kan'no K., Akimoto I., Shirai M., Okino F., Touhara H., Kamada M.

Abstracts of the meeting of the Physical Society of Japan. Sectional meeting ( The Physical Society of Japan (JPS) ) 1996 ( 2 ) 410 - 410 1996.09
3a-Z-7 Electron Spin Resonance and Zero-feild splitting energy of triplet STEs in NaBr

Kan'no K., Shirai M., Akimoto I., Matsumoto T.

Abstracts of the meeting of the Physical Society of Japan. Annual meeting ( The Physical Society of Japan (JPS) ) 51 ( 2 ) 296 - 296 1996.03
3a-Z-13 Optical properties in fluorinated fullerenes

Akimoto I., Kan'no K., Kamada M.

Abstracts of the meeting of the Physical Society of Japan. Annual meeting ( The Physical Society of Japan (JPS) ) 51 ( 2 ) 299 - 299 1996.03
28p-J-5 Temperature dependence of optical properties in C_60 film and single crystal II

Akimoto I, Kan'no K, Matsuura S, Ishiguro T

Abstracts of the meeting of the Physical Society of Japan. Sectional meeting ( The Physical Society of Japan (JPS) ) 1995 ( 2 ) 370 - 370 1995.09
28a-Z-5 Luminescence from Novel Wide-Band-Gap Insulators C_60F_48 and C_70F_58

Kan'no K., Akimoto I., Kamada M., A Kolmakov, V Stankevitch

Abstracts of the meeting of the Physical Society of Japan. Sectional meeting ( The Physical Society of Japan (JPS) ) 1995 ( 2 ) 265 - 265 1995.09
Temperature dependence of optical properties in C_<60> film and single crystal

Akimoto I, Kan'no K, Matsuura S, Ishiguro T

Abstracts of the meeting of the Physical Society of Japan. Annual meeting ( The Physical Society of Japan (JPS) ) 50 ( 2 ) 423 - 423 1995.03
Intrinsic Luminescence in (CnH2n+1NH3)2CdCl4; n=1, 2, 3.

山田壮克, 大西彰正, 吉成武久, 神野賢一, 秋元郁子, 上川友好

日本物理学会講演概要集(年会) 50th ( 2 ) 1995

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Conference Activities & Talks

UV light-induced ESR in ion-doped barium zirconate solid electrolytes

K. Yamaji, I. Akimoto, M. Nagai, Y. Okuyama, H. Matsuoka

第34回光物性研究会 2023.12.08
Cryogenic ESR imaging of photo-injected electron and hole traps in an Al-doped TiO2 anatase crystal

Y. Kitao, H. Matsuoka, A. Murano, T. Sekiya, I. Akimoto

第34回光物性研究会 2023.12.08
Cryogenic ESR imaging of photo-injected electron and hole traps in TiO2 anatase crystals

Yamato Kitao, Hideto Matuoka, Murano Ayane, Takao Sekiya, Ikuko Akimoto

SEST2023 2023.11.02
UV light-induced pulse ESR in ion-doped barium zirconate solid electrolytes

Kota Yamaji, Ikuko Akimoto, Masaya Nagai, Yuji Okuyama, Hideto Matsuoka

SEST2023 2023.11.02
Trial of cyclotron resonance imaging at cryogenic temperatures

Ikuko Akimoto, Nobuko Naka, Hideto Matsuoka

SEST2023 2023.11.02
Spatial distribution of PL intensity of NV− and NV0 centers in relation to optically stimulated charge transfer

K. Isoyama, R. Nagasone, H. Matsuoka, and I. Akimoto

International Conference of Luminescence （ICL2023） 2023.08.31
HPHT-Ibダイヤモンド結晶における光刺激による局在状態間の電荷移動

秋元郁子, 磯山一馬, 細川剛志, 松岡秀人

日本物理学会 2023年春季大会 2023.03.24
DC電場印加下での光注入バレー電子のサイクロトロン共鳴

秋元郁子, 中暢子

日本物理学会 2023年春季大会 2023.03.22
HPHT マイクロダイヤモンド結晶におけるNV− センターの発光と不純物のESR 信号

細川剛志, 秋元郁子

第33回光物性研究会 2022.12.09
エポキシ樹脂の劣化における光誘起スピンのESR イメージング

岬恭平, 松岡秀人, 秋元郁子

第33回光物性研究会 2022.12.09
Ib 型ダイヤモンド結晶における不純物間の光誘起電荷移動とNV− センターの安定性

磯山一馬, 秋元郁子

第33回光物性研究会 2022.12.09
分子研パルスESR装置による静電場印加下での時間分解サイクロトロン共鳴測定

秋元郁子, 北尾大和, 松岡秀人, 中暢子

第61回電子スピンサイエンス学会 2022.12.04
低温・光照射下におけるHTHP-Ib型ダイヤモンドのESRイメージング

秋元郁子, 磯山一馬, 細川剛志, 松岡秀人

第61回電子スピンサイエンス学会 2022.12.03
時間分解EPRおよび量子化学計算によるナフタレンジイミドの光励起スピンダイナミクス研究

松岡秀人, 芝野祐樹, 秋元郁子, 神崎祐貴

第61回電子スピンサイエンス学会 2022.12.03
半導体単結晶における光照射・低温下でのESRイメージング測定

北尾大和, 松岡秀人, 関谷隆夫, 秋元郁子

第61回電子スピンサイエンス学会 2022.12.02
半導体結晶内に光生成した電子・正孔トラップの電子スピン共鳴

秋元郁子 [Invited]

第25回ESR フォーラム研究会 2022.07.22
Exciton binding energy in diamond measured by time-resolved cyclotron resonance

I. Akimoto, S. Hamabata, J. H. Kaneko, N. Naka

NDNC 2022 2022.06.08
Diffusion-related lifetime of photoexcited carriers in ultrapure diamond

K. Konishi, I. Akimoto, H. Matsuoka, V. Djurberg, S. Majdi, J. Isberg, N. Naka [Invited]

MRS Spring Meeting 2022 2022.05
光照射下でのEPR イメージングと成分分解の試み

岬恭平, 松岡秀人, 秋元郁子

第24 回ESR フォーラム研究会 2021.09.24
断熱励起下での磁場掃引ODMR 法の検討

牧祐介, 松岡秀人, 秋元郁子

第24 回ESR フォーラム研究会 2021.09.24
CVD 法により作製されたドープダイヤモンド結晶のESR

細川剛志, 秋元郁子, J. Barjon

第24 回ESR フォーラム研究会 2021.09.24
Cyclotron resonance of valley-polarized electrons under a static electric field

Ikuko Akimoto, Nobuko Naka

JPSJ Autumn Meeting 2021.09.22
DEER spectroscopy of electron and hole spins in a semiconductor crystal

Ikuko Akimoto, Hideto Matsuoka, Takao Sekiya

ISMAR-APNMR-NMRSJ-SEST2021 2021.08.26
Excited State Investigation of Phenazine Derivatives for Metal-free Phosphorescent Emitters in Organic Light-Emitting Devices

Hideto Matsuoka, Hiroki Matsui, Ikuko Akimoto

ISMAR-APNMR-NMRSJ-SEST2021 2021.08.25
Adiabatically excited field-swept cw-ODMR in an ensemble of NV− centers

Yusuke Maki, Hideto Matsuoka, Ikuko Akimoto

ISMAR-APNMR-NMRSJ-SEST2021 2021.08.25
Transient coexistence of excitons and charged carriers in high-purity diamond

S. Hamabata, J. H. Kaneko, N. Naka, I. Akimoto

NDNC2020/2021 2021.06.11
高純度ダイヤモンド中の転位における光励起キャリアの再結合効果

小西一貴, 秋元郁子, 松岡秀人, V. Djurberg, S. Majdi, J. Isberg, 中暢子

日本物理学会第76回年次大会 2021.03.13
NV-センターにおけるスピン系の断熱励起によるODMR測定

牧祐介, 松岡秀人, 秋元郁子

第31回光物性研究会 2020.12.12
トラップされた電子・正孔ペアのトンネル再結合とスピン間相互作用

秋元郁子, 松岡秀人, 関谷隆夫

第59回電子スピンサイエンス学会 2020.11.15
ナフタレンジイミド誘導体の励起三重項状態を利用した発光特性

松岡秀人, 神崎祐貴, 杉崎研司, 芝野祐樹, 佐藤和信, 秋元郁子, Pritam Mukhopadhyay

第59回電子スピンサイエンス学会 2020.11.15
Surface recombination model for electron lifetime in intrinsic diamond

K. Konishi, I. Akimoto, H. Matsuoka, Ian Friel, J. Isberg, N. Naka

Hasselt Diamond Workshop 2020 - SBDD XXV 2020 2020.03
高純度ダイヤモンド結晶における励起子解離によるキャリア生成の温度依存性

濱端沙耶香, 秋元郁子, 中暢子

第30回光物性研究会 2019.12
水中の備長炭から得たレーザーアブレーション生成物の発光スペクトル

石田圭樹, 山本翔太, 秋元郁子

第30回光物性研究会 2019.12
トラップされた電子・正孔スピンのトンネル再結合とスピン間ダイポール相互作用

秋元郁子, 松岡秀人, 関谷隆夫

第30回光物性研究会 2019.12
NVセンターの発光検出ESRと偏光依存性

牧祐介, 秋元郁子

第30回光物性研究会 2019.12
りん光性有機EL発光体の開発に向けたフェナジン誘導体の励起状態研究

松岡秀人, 松井大樹, 秋元郁子

第58回電子スピンサイエンス学会 2019.11
Q-band ESR装置を用いた光キャリアのサイクロトロン共鳴

秋元郁子, 中暢子, 松岡秀人

第58回電子スピンサイエンス学会 2019.11
ナフタレンジイミド誘導体の励起三重項状態研究

芝野祐樹, 神崎祐貴, 秋元郁子, 松岡秀人

第58回電子スピンサイエンス学会 2019.11
Rapid-scan法によるNV-センターESR信号の高効率測定

牧祐介, 松岡秀人, 秋元郁子

第58回電子スピンサイエンス学会 2019.11
ランダウ準位の不均一広がりを考慮したダイヤモンドの真性キャリア移動度の抽出

小西, 一貴, 秋元郁子, 松岡秀人, Ian Friel, J. Isberg, 中暢子

日本物理学会 2019年秋季大会 2019.09
高純度ダイヤモンド結晶における励起子からのキャリア生成機構

濱端, 沙耶香, 秋元, 郁子, 中, 暢子

日本物理学会 2019年秋季大会 2019.09
Influence of internal strain on the carrier transport properties in diamond

K. Konishi, I. Akimoto, H. Matsuoka, Ian Friel, J. Isberg, N. Naka

Hasselt Diamond Workshop 2019 - SBDD XXIV 2019 2019.03
マイクロ波パルスで断熱的に励起した電子・正孔スピン間の相互作用観測

秋元郁子, 松岡秀人, 関谷隆夫

日本物理学会第74回年次大会 2019.03
任意波形パルスを用いた半導体結晶中にトラップされた電子・正孔スピン間の距離測定

秋元郁子, 松岡秀人, 関谷隆夫

第57回電子スピンサイエンス学会 2018.11.01
Double electron-electron resonance with arbitrary-waveform pulses: application to randomly distributed electron and hole spins in a semiconductor

Ikuko Akimoto, Hideto Matsuoka, Takao Sekiya [Invited]

APES-IES2018 2018.09.25
高純度ダイヤモンドにおける励起子寿命に対する歪みの影響

小西一貴, 小原慧一, Ian Friel, J. Isberg, 松岡秀人, 秋元郁子, 中暢子

日本物理学会 2018年秋季大会 2018.09.11
ルブレン単結晶での光キャリアのマイクロ波応答

後藤建太, 高山敏暢, 秋元郁子

日本物理学会 2018年秋季大会 2018.09.11
高純度ダイヤモンド中に生成した励起子とキャリアの化学平衡

濵端沙耶香, 秋元郁子, 中暢子

日本物理学会 2018年秋季大会 2018.09.11
Optical injection of valley-polarized electrons in group-IV semiconductors

Nobuko Naka, Ikuko Akimoto [Invited]

EXCON 2018 2018.07.13
Two routes of optical carrier injection in high-purity diamond

S. Hamabata, I. Akimoto, N. Naka

EXCON 2018 2018.07.10
Time-resolved measurement of photocarrier generation in CH3NH3PbI3 single crystals

Yoshitaka Tanaka, Ikuko Akimoto

EXCON 2018 2018.07.10
Photocarrier injection by two photon excitation in rubrene single crystal

Kenta Goto, Toshinobu Takayama, Keizo Ohata, Ikuko Akimoto

EXCON 2018 2018.07.10
Enhanced mobility of excitons under inelastic phonon scattering in intrinsic diamond

K. Konishi, I. Akimoto, H. Matsuoka, Ian. Friel, J. Isberg, N. Naka

SBDD XXIII 2018 2018.03
Time-resolved spectroscopy on intrinsic diamond for reassessment of the exciton binding energy

N. Naka, S. Hamabata, K. Konishi, J. H. Kaneko, I. Akimoto

SBDD XXIII 2018 2018.03
高純度ダイヤモンド結晶における光キャリア生成経路の温度依存性

濵端沙耶香, 秋元郁子, 中暢子

日本物理学会第73回年次大会 2018.03
Cu2Oにおける非放物線バンドの時間分解サイクロトロン共鳴

高畑光善, 秋元郁子, 中暢子

日本物理学会第73回年次大会 2018.03
高純度ダイヤモンド結晶における光キャリア生成経路

濱端沙耶香, 秋元郁子, 中暢子

第28回光物性研究会 2017.12
ルブレン単結晶における電場印加下での光キャリア生成

後藤建太, 高山敏暢, 秋元郁子

第28回光物性研究会 2017.12
Spin interaction between trapped electron and hole in an Al doped TiO2 crystal measured by pulse EPR

Ikuko Akimoto, Takao, Sekiya [Invited]

The 11th Japanese-Russian workshop 2017.11.14
CH3NH3PbI3単結晶における過渡光生成キャリアのマイクロ波応答と相転移

村岡良馬, 田中恵崇, 秋元郁子

第56回電子スピンサイエンス学会 2017.11
ヨウ化鉛ペロブスカイト結晶における光キャリアのマイクロ波応答と構造相転移

村岡良馬, 田中恵崇, 秋元郁子

日本物理学会 2017年秋季大会 2017.09
高純度ダイヤモンド結晶における光キャリア生成過程の励起波長依存性

秋元郁子, 中暢子

日本物理学会 2017年秋季大会 2017.09
ルブレン単結晶における電場印加下での光キャリア生成と試料酸化の影響

後藤建太, 高山敏暢, 秋元郁子

日本物理学会 2017年秋季大会 2017.09
Microwave response to transient photocarriers in CH3NH3PbI3 crystals measured across a structural phase transition temperature

Ikuko Akimoto, Ryoma Muraoka, Yoshitaka Tanaka [Invited]

5th AWEST 2017 2017.06.18
Free Carrier Generation by Excitonic Two-Body Collisions in Semiconductors

Ikuko Akimoto, Nobuko Naka

ICSCE-7, 2014 2017.04.23
Quantitative discussion on the relevance of substitutional impurities to exciton and charge-carrier lifetimes

T. Shimomura, N. Naka, N. Tokuda, I. Akimoto

SBDD XXII 2017.03
水相における可視光レーザーアブレーション法による新規材料生成～高純度炭素材料の光化学反応とレーザーアブレーション～

秋元郁子

日本化学会第97春季年会 2017.03
ダイヤモンド中の光励起キャリアに対する不純物散乱の定量評価

下村尊明, 中暢子, 徳田規夫, 秋元郁子

日本物理学会第72回年次大会 2017.03
高純度シリコン結晶におけるバレー選択的光キャリア生成

秋元郁子, 中暢子

日本物理学会第72回年次大会 2017.03
高純度ダイヤモンドにおける不純物の定量評価と不純物散乱レートの考察

下村尊明, 中暢子, 徳田規夫, 秋元郁子

第27回光物性研究会 2016.12
ルブレン結晶におけるマイクロ波共振器内での光キャリア注入

高山敏暢, 大畠慶三, 秋元郁子

第27回光物性研究会 2016.12
三種類の炭素材料における水中でのレーザー照射による水素発生とナノ粒子生成

山本翔太, 尾崎信彦, 秋元郁子

第27回光物性研究会 2016.12
電子スピン共鳴法を用いた高純度ダイヤモンドにおける窒素不純物の定量

下村尊明, 中暢子, 徳田規夫, 秋元郁子

第55回電子スピンサイエンス学会 2016.11
半導体結晶中にトラップされた電子・正孔スピン間相互作用 II

秋元郁子, 関谷隆夫

第55回電子スピンサイエンス学会 2016.11
CH3NH3PbI3単結晶における光生成キャリアのマイクロ波応答

田中恵崇, 村岡良馬, 秋元郁子

第55回電子スピンサイエンス学会 2016.11
結晶成長法の異なる高純度シリコンにおける光キャリアサイクロトロン共鳴

秋元郁子, 高山敏暢, 大畠慶三, 中暢子

日本物理学会 2016年秋季大会 2016.09
Exciton interband relaxation observed by time-resolved cyclotron resonance in diamond

I. Akimoto, N. Naka

DPC16 2016.07.20
Excitons and fundamental properties of diamond

N. Naka, H. Morimoto, I. Akimoto [Invited]

SBDD XXI 2016.03
高純度シリコン結晶における光生成キャリアのダイナミクス

秋元郁子, 大畠慶三, 中暢子

日本物理学会第71回年次大会 2016.03
高純度CVD及びHPHTダイヤモンド基板における格子欠陥の赤外分光

下村尊明, 中暢子, 徳田規夫, 秋元郁子

日本物理学会第71回年次大会 2016.03
三種類の炭素材料における水中でのレーザー照射による水素発生とナノ粒子生成

山本翔太, 尾崎信彦, 秋元郁子

光物性研究会論文集 2016
赤色発光材料白金錯体の発光過程

田中恵崇, 大畠慶三, 秋元郁子, 川端温子, 大須賀秀次, 坂本英文

第26回光物性研究会 2015.12
半導体結晶中にトラップされた電子・正孔スピン間相互作用

秋元郁子, 関谷隆夫

第54回電子スピンサイエンス学会 2015.11
パルスESR法によるAl:TiO_2_結晶中にトラップされた電子・正孔スピン間相互作用の観測

秋元郁子, 関谷隆夫

日本物理学会2015年秋季大会 2015.09
高抵抗シリコンにおける定常・パルス光生成キャリアによるサイクロトロン共鳴の比較

大畠慶三, 合羽一貴, 半田裕之, 秋元郁子, 中暢子

日本物理学会2015年秋季大会 2015.09
高抵抗シリコンにおける光キャリア生成過程の励起波長依存性

秋元郁子, 大畠慶三, 半田裕之, 中暢子

日本物理学会2015年秋季大会 2015.09
White light emission from solid carbon in water during hydrogen generation by VIS nanosecond laser pulse irradiation

Ikuko Akimoto [Invited]

International Conference and Trade fair on Laser Technology 2015.07.21
Spin interaction between trapped electron and hole in an Al doped TiO2 crystal measured by pulse EPR

Ikuko Akimoto, Takao Sekiya

3rd AWEST 2015 2015.06.15
Time-Resolved Cyclotron Resonance on Dislocation-Free HPHT Diamond

I. Akimoto, N. Naka, N.Tokuda

NDNC2015 2015.05
サイクロトロン共鳴による励起子二体衝突レートの測定

中暢子, 秋元郁子

日本物理学会第70回年次大会 2015.03
時間分解サイクロトロン共鳴による励起子と正孔緩和の観測

秋元郁子, 中暢子

日本物理学会第70回年次大会 2015.03
IV族半導体における伝導キャリアのスピン緩和時間

秋元郁子 [Invited]

日本物理学会第70回年次大会 2015.03
水中の備長炭へのレーザー照射による白色光放射

山本翔太, 尾藤隆太, 前田宏輔, 秋元郁子

第25回光物性研究会 2014.12
備長炭と水界面へのレーザー照射による水素発生中の白色光放射

秋元郁子, 前田宏輔

第75回応用物理学会秋季学術講演会 2014.12
ルブレン単結晶の発光スペクトルにおける外因性発光の寄与について

松下啓祐, 大畠慶三, 秋元郁子

第25回光物性研究会 2014.12
Pulse EPR detection of UV light generated spins on an Al doped TiO2 crystal

Ikuko Akimoto, Takao Sekiya

APES2014/IES/SEST2014 2014.11.14
High carrier mobility of diamond measured by cyclotron resonance

Ikuko Akimoto, Yushi Handa, Katsuyuki Fukai, Nobuko Naka

IUMRS-ICA 2014 2014.09
Laser InducedHydrogen Generationfrom Carbon-DispersedAqueous Solution

Kosuke Maeda, Ryuta Bitou, Ikuko Akimoto

IUMRS-ICA 2014 2014.09
高純度シリコン結晶における光キャリアの時間分解サイクロトロン共鳴

秋元郁子, 深井克行, 中暢子

日本物理学会2014年秋季大会 2014.09
High-efficiency detection of free carriers via Auger ionization in wide-gap semiconductors

Nobuko Naka, Ikuko Akimoto

ICPS2014 2014.07
Momentum relaxation times for optically excited delocalized electrons and holes in pristine diamond

Ikuko Akimoto, Nobuko Naka

2nd AWEST 2014 2014.06
Momentum and spin relaxation times for optically excited delocalized carriers in group IV semiconductors

Nobuko Naka, Ikuko Akimoto

NOEKS12, 2014 2014
ダイヤモンド結晶における時間分解サイクロトロン共鳴の温度依存性

半田裕之, 深井克行, 秋元郁子, 中暢子

第24回光物性研究会 2013.12
ルブレン単結晶の構造転位点における発光の増強

松下啓祐, 大畠慶三, 秋元郁子

第24回光物性研究会 2013.12
AlドープしたTiO2結晶における紫外線励起スピン種のパルスEPR観測

秋元郁子, 関谷隆夫

第52回電子スピンサイエンス学会年会 2013.11
Hydrogen generation from water by photochemical reaction with carbon

Maeda Kosuke, Ozaki Nobuhiko, Akimoto Ikuko

2013 JSAP-MRS Joint symposia 2013.09.17
Measurement of photo-carrier effective masses in diamond and estimation of mobilities

Ikuko Akimoto, Yushi Handa, Katsuyuki Fukai, Nobuko Naka

DCM2013 2013.09.04
Photochemical activity of carbon powder in hydrogen generation from water

Maeda Kosuke, Ozaki Nobuhiko, Akimoto Ikuko

DCM2013 2013.09.03
サイクロトロン共鳴法によるダイヤモンド結晶におけるキャリア散乱時間

秋元郁子, 半田裕之, 深井克行, 中暢子

日本物理学会2013年秋季大会 2013.09
Direct measurement of the carrier effective masses in pristine diamond

Nobuko Naka, Katsuyuki Fukai, Yushi Handa, Ikuko Akimoto

DPC’13DPC’13 2013.08
Measurement of the momentum relaxation times for delocalized electrons in pristine diamond

AKIMOTO Ikuko

1st AWEST 2013 2013.06
ダイヤモンド結晶におけるキャリア有効質量の実測

秋元郁子, 深井克行, 半田裕之, 中暢子

日本物理学会第68回年次大会 2013.03
ダイヤモンド結晶における光キャリアのサイクロトロン共鳴

深井克行, 半田裕之, 秋元郁子, 中暢子

ダイヤモンド結晶における光キャリアのサイクロトロン共鳴 2013.03
レーザー照射による備長炭粉末を用いた水からの水素発生

前田宏輔, 尾崎信彦, 秋元郁子

光物性研究会論文集 2012
溶液レーザーアブレーション法によるキナクリドンキノンのナノ粒子作製

大畠正裕, 尾崎信彦, 秋元郁子

光物性研究会論文集 2010
Enhanced electron mobility in intrinsic diamond at cryogenic temperatures

N. Naka, I. Akimoto, T. Shimomura, Ian Friel, J. Isberg

SBDD XXII

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Patents

光照射による水分解の方法、水素発生装置、炭素の使用方法、及び犠牲材

Date applied： 2012.08.22 （特願2012-183641 ） Publication date： 2014.03.06 （特開2014-40349 ）

Inventor(s)/Creator(s)：秋元郁子、尾崎信彦、前田宏輔 Applicant：国立大学法人和歌山大学

Research Exchange

J.Pernot（France）氏とのセミナー

2024.04

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J.Pernot（France）,J. Isberg（Sweden）グループとの同時Zoom会議

2024.01

　International research exchanges
J. Isberg（Sweden）グループとの対面対話

2022.06

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J. Isberg（Sweden）とのダイヤモンドのキャリア伝導に関する研究

2019.01

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Now

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ESR測定による光誘起相転移現象の解明

2014.04

-

2015.03

　Joint research
ダイヤモンド結晶のサイクロトロン共鳴法による研究

2014.04

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2015.03

　Joint research
半導体における動的相関電子系の光科学

2013.04

-

2015.03

　Joint research
無機再結合発光系のESRによる発光状態の解明

2012.04

-

2015.03

　Joint research
半導体における動的相関電子系の光科学（DYCE)

2011.04

-

2013.03

　Joint research
ワイドバンドギャップ蛍光体における固有発光の研究

2011.04

-

2012.03

　Joint research
平成23-24年度　和歌山大学　独創的研究支援プロジェクト

2011.04

-

2012.03

　Joint research
電荷移動型励起状態のスピン間距離測定の試み

2010.04

-

2012.03

　Joint research
平成22年度和歌山大学　学長裁量経費１０

2010.04

-

2011.03

　Joint research
半導体における動的相関電子系の光科学

2009.04

-

2011.03

　Joint research
平成20-21年度　和歌山大学オンリー・ワン創成プロジェクト

2008.04

-

2009.03

　Joint research
平成20-21年度　和歌山大学オンリー・ワン創成プロジェクト

2008.04

-

2009.03

　Joint research

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KAKENHI

プロトン伝導型固体酸化物電解質における欠陥構造の光照射パルスESR法による決定

2024.04

-

2027.03

Grant-in-Aid for Scientific Research(C) Principal investigator
固体リドベルグ状態を用いる量子技術の開拓

2022.04

-

2026.03

Grant-in-Aid for Scientific Research(B) Co-investigator
光注入バレーキャリアのダイナミクス解明と制御方法の確立

2021.04

-

2024.03

Grant-in-Aid for Scientific Research(C) Principal investigator
光初期化したデルタバレー偏極の空間輸送制御

2017.04

-

2021.03

Grant-in-Aid for Scientific Research(B) Co-investigator
混晶半導体基礎物性研究の新展開

2017.04

-

2021.03

Grant-in-Aid for Scientific Research(C) Co-investigator
有機半導体結晶における自由キャリア観測によるバンド伝導性の検証

2015.04

-

2018.03

Grant-in-Aid for Scientific Research(C) Principal investigator
間接遷移型半導体におけるスピン偏極キャリアの光注入

2014.04

-

2017.03

Grant-in-Aid for Scientific Research(C) Co-investigator
電子スピン共鳴法による電荷分離型光励起状態の再結合発光過程の実証

2011.04

-

2014.03

Grant-in-Aid for Scientific Research(C) Principal investigator
サイクロトロン共鳴法を用いた光キャリアダイナミクスの研究

2011.04

-

2013.03

Grant-in-Aid for Scientific Research on Innovative Areas(Research in a Proposed Research Area) Principal investigator
パルスESR測定法を用いた光伝導性ポリマーにおける電荷分離状態のスピン相関距離

2006.04

-

2008.03

Grant-in-Aid for Young Scientists(B) Principal investigator
窒化物混晶半導体の発光機構の解明

2006.04

-

2008.03

Grant-in-Aid for Scientific Research(C) Co-investigator

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Competitive funding, donations, etc. from foundation, company, etc.

システム工学部寄附金（公益財団法人旭硝子財団研究助成）

2011.04

-

2012.03

Research subsidy Principal investigator

Instructor for open lecture, peer review for academic journal, media appearances, etc.

分子科学研究所物質分子科学研究領域　客員准教授

2022.04.01

-

2024.03.31

大学共同利用機関法人　自然科学研究機構

　View Details

客員准教授

客員准教授として研究に従事するとともに研究所の運営に協力願う。
論文査読

2021.11.22

-

2021.11.30

Journal of Materials Chemistry A

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論文査読

査読、評価
夢ナビ講義Video

2021.10.01

-

2023.12.31

フロムページ

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高校生、受験生への情報提供

講義Video資料作成、実演、説明文作成
論文査読

2021.01

-

Now

Chemical Physics Letters

　View Details

学術雑誌等の編集委員・査読・審査員等

論文査読
論文査読

2020.01

-

Now

Journal of the Physical Society of Japan

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学術雑誌等の編集委員・査読・審査員等

論文査読
論文査読

2019.07

-

Now

Optical Review

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学術雑誌等の編集委員・査読・審査員等

論文査読
講師

2018.08

-

Now

きのくにオリンピック化学力向上ゼミ

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講演講師等

講師,任期:2018年8月～
講師

2017.07

-

Now

きのくにオリンピック化学力向上ゼミ

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講演講師等

講師,任期:2017年７月～
きのくに科学オリンピック科学力向上ゼミ　物理ゼミ

2017.07

その他

　View Details

小・中・高校生を対象とした学部体験入学・出張講座等

音と光の実験の企画・実施
公開体験学習会での「メジャー実験教室」への出展

2016.11

その他

　View Details

小・中・高校生を対象とした学部体験入学・出張講座等

「身の回りの光スペクトルを測定してみよう」
論文査読

2016.09

-

Now

ACS Applied Materials & Interfaces

　View Details

学術雑誌等の編集委員・査読・審査員等

論文査読
論文査読

2016.08

-

Now

Applied Physics Letters

　View Details

学術雑誌等の編集委員・査読・審査員等

論文査読
論文査読

2016.06

-

Now

Crystal Growth & Design

　View Details

学術雑誌等の編集委員・査読・審査員等

論文査読
論文査読

2016.02

-

Now

Applied Physics Letters

　View Details

学術雑誌等の編集委員・査読・審査員等

論文査読
公開体験学習会への出展

2015.04

その他

　View Details

小・中・高校生を対象とした学部体験入学・出張講座等

身の回りの光スペクトルを測ってみよう！
公開体験学習会への出展

2014.04

その他

　View Details

小・中・高校生を対象とした学部体験入学・出張講座等

「身の回りの光スペクトルを測ってみよう！」,日付:１１月
和歌山大学システム工学部　応用物理メジャー＆化学メジャー　体験実験教室

2014.04

その他

　View Details

小・中・高校生を対象とした学部体験入学・出張講座等

（２）蛍光・蓄光のスペクトル　実験内容の考案と準備、および当日担当,日付:7月20日
査読1件

2013.04

-

2013.08

Nanoscale

　View Details

学術雑誌等の編集委員・査読・審査員等

査読1件
公開体験学習会への出展

2013.04

その他

　View Details

小・中・高校生を対象とした学部体験入学・出張講座等

「身の回りの光スペクトルを測ってみよう！」,日付:１１月
査読1件

2012.04

-

2012.12

Chem. Lett.

　View Details

学術雑誌等の編集委員・査読・審査員等

査読1件
第10回ESR夏の学校　講師

2012.04

電子スピンサイエンス学会　若手の会

　View Details

公開講座・講演会の企画・講師等

電子スピン共鳴法の基礎,日付:7月21-22日
公開体験学習会への出展

2012.04

その他

　View Details

小・中・高校生を対象とした学部体験入学・出張講座等

「身の回りの光スペクトルを測ってみよう！」
公開体験学習会への出展

2012.04

その他

　View Details

小・中・高校生を対象とした学部体験入学・出張講座等

「電子スピン共鳴で見る身の回りの物質」
公開体験学習会への出展

2011.04

その他

　View Details

小・中・高校生を対象とした学部体験入学・出張講座等

「身の回りの光スペクトルを測ってみよう！」
海南高校SSH 特設課外授業

2008.08

その他

　View Details

小・中・高校生を対象とした学部体験入学・出張講座等

実施補佐,日付:2008.8
第3回有機ELディスプレイ研究会

2006.01

和歌山県工業技術センター

　View Details

公開講座・講演会の企画・講師等

第3回有機ELディスプレイ研究会
講演1:「有機発光材料における発光過程の基礎研究」
講師　:　和歌山大学システム工学部　精密物質学科　助手　秋元郁子　先生
午後1時30分～2時30分,日付:2006.1

▼display all

Committee member history in academic associations, government agencies, municipalities, etc.

監事

2024.02.19

-

2026.02.19

SEST

　View Details

EPR、ESR

学会の運営に関わる意思決定
運営委員

2022.04.01

-

2024.03.31

大学共同利用機関法人自然科学研究機構　分子科学研究所機器センター運営委員会

　View Details

学協会、政府、自治体等の公的委員

機器センターの管理運営に関する重要事項を審議し，分子科学研究所長の諮問に応じる。
理事

2022.02.19

-

2024.02.19

SEST

　View Details

EPR、ESR

学会の運営に関わる意思決定
研究会実行委員

2021.01.01

-

2023.12.31

光物性研究会

　View Details

研究会

大会実行委員（プログラム委員）
国際プログラム委員

2020.01.01

-

2023.12.31

International Society of Magnetic Resonance

　View Details

EPR

2年に1回の国際会議のプログラム選考
組織委員

2018.04

-

2022.12.31

EXCON組織委員会

　View Details

学協会、政府、自治体等の公的委員

国際会議EXCON18の実施
実行委員、プログラム委員

2018.04

-

2022.03

ISMAR2021実行委員会

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学協会、政府、自治体等の公的委員

ISMAR2021（大阪）の実施へ向けた現地委員の会合、プログラム委員の決定
書面審査員

2016.08

-

2017.07

特別研究員等審査会専門委員及び国際事業委員会

　View Details

国や地方自治体、他大学・研究機関等での委員

委員,任期:2016年8月-2017年7月
年会実行委員

2016.04

-

2017.03

電子スピンサイエンス学会

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学協会、政府、自治体等の公的委員

年会（大阪市大）の実行委員　奨励発表・ポスター発表の審査員等
書面審査員

2013.08

-

2014.07

特別研究員等審査会専門委員及び国際事業委員会

　View Details

国や地方自治体、他大学・研究機関等での委員

国や地方自治体、他大学・研究機関等での委員,任期:2013/08/01～2014/07/31
領域運営委員(領域5)

2010.05

-

2011.04

日本物理学会

　View Details

学協会、政府、自治体等の公的委員

日本物理学会の学術的会合に際し、領域5を対象とし、シンポジウム・招待講演の募集と取りまとめ、および、一般講演のプログラム編成を行う。また、学会開催時、領域5のインフォーマルミーティングの開催の世話と、領域5web HPの管理をするのが仕事である。
,任期:2010.5～2011.4

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Other Social Activities

和歌山工業技術センター職員へのアドバイス

2017.01

その他

　View Details

ボランティア活動等

依頼を受け、新規実験立ち上げに対するアドバイスを、和歌山大学の研究室で行った。,実施者:秋元郁子、森岳志職員（他2名）
和歌山工業技術センター職員へのアドバイス

2016.06

その他

　View Details

ボランティア活動等

依頼を受け、新規実験立ち上げに対するアドバイスを、和歌山大学の研究室で行った。,実施者:秋元郁子、森岳志職員（他2名）
社会連携推進活動

2012.04

-

2013.03

その他

　View Details

社会との連携を推進する活動

システム工学部キャリアサポート室による女性教員へのインタビュー（HP掲載）への協力
和歌山県工業技術センターからの依頼実験実施

2011.04

-

2012.03

その他

　View Details

ボランティア活動等

新規有機材料の低温での発光・発光寿命測定,実施者:秋元郁子
nano&neo 新機能性材料展2010

2010.02

その他

　View Details

社会との連携を推進する活動

nano&neo 新機能性材料展2010(東京ビッグサイト)
「都市エリア」事業の展示説明