1. CNT Application Development Team; CNT-Application Research Center; National Institute of Advanced Industrial Science and Technology (AIST), Central 5, 1-1-1 Higashi; Tsukuba Ibaraki 305-8565 Japan
2. Technology Research Association for Single Wall Carbon Nanotube (TASC), Central 5, 1-1-1 Higashi; Tsukuba Ibaraki 305-8565 Japan
3. Department of Chemistry; Indian Institute of Technology Bombay; Mumbai 4000076 India