1. Bio-Nano Electronics Research Centre Graduate School of Interdisciplinary New Science Toyo University 2100, Kujirai Kawagoe Saitama 350-8585 Japan
2. Nanoscale Research Facility Indian Institute of Technology Delhi Hauz Khas New Delhi 110016 India
3. EM Business Unit JEOL Ltd. 13F, Ohtemachi Nomura Building, 2-1-1 Ohtemachi Chiyoda- Ku Tokyo Japan