- 2011 - 現在 National Institute for Materials Science
- 2010/04 - 現在 Chiba Institute of Technology
- 2010 - 現在 Guest Professor, Chiba Institute of Technology
- 2009 - -1010 Guest Researcher, National Institute of Science and Technology Policy, Ministry of Education, Culture, Sports, Science and Technology, Japan
- 2008 - :独立行政法人 物質・材料研究機構 主幹研究員
- 2008 - : National Institute for Materials Science, Principal Researcher
- 2004/07 - 2005/07 Ministry of Education,Culture,Sports,Science and Technology
- 2004 - 2005 Overseas Research Fellow sponsored by Ministry of Education, Culture, Sports, Science and Technology, Japan dispatched to Max-Planck Institut fuer Eisenforschung, Germnay
- 2004 - :独立行政法人 物質・材料研究機構 主任研究員
- 2004 - : National Institute for Materials Science, Seinor Researcher
- 2001 - :独立行政法人 物質・材料研究機構 研究員
- 2001 - : National Institute for Materials Science, Researcher
- 2000 - :科学技術庁 金属材料技術研究所 研究員
- 2000 - : National Research Institute for Metals, Researcher
- 1997 - :慶應義塾大学理工学部助手
- 1997 - : Keio University, Faculty of Science and Technology,
- Research Associate