- 2019/04 - Faculty of Industrial Science and Technology, Tokyo University of Science Professor
- 2013/04 - 2019/03 Faculty of Industrial Science and Technology, Tokyo University of Science Associate professor
- 2007/04 - 2013/03 Faculty of Industrial Science and Technology, Tokyo University of Science Lecturer
- 2003/10 - 2007/03 Faculty of Industrial Science and Technology, Tokyo University of Science Part-time Lecturer
- 2002/06 - 2003/07 Faculty of Science and Engineering, Tokyo University of Science in Yamaguchi Lecturer
- 2000/04 - 2002/06 Faculty of Science and Engineering, Tokyo University of Science in Yamaguchi Research Associate
- 1999/04 - 2000/03 Materials Science Division, Argonne National Laboratory, U.S.A Invited Resercher
- 1995/04 - 2000/03 Faculty of Science and Technology, Tokyo University of Science Research Associate
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