Institution: | (1) Unit for Nano Science & Technology, Department of Chemical, Biological & Macromolecular Sciences, S. N. Bose National Centre for Basic Sciences, Block JD, Sector III, Salt Lake, Kolkata, 700 098, India;(2) Institute for Condensed Matter Physics, Technical University of Braunschweig, Mendelssohnstr. 3, 38106 Braunschweig, Germany; |