1. Nanoscience
Laboratory, Institute Instrumentation Centre, Indian Institute of Technology Roorkee, Roorkee - 247667, India
2. Center for Carbon
Materials, International Advanced Research Centre for Powder Metallurgy
and New Materials (ARCI), Hyderabad - 500005, India
3. Functional
Nanomaterials, Institute for Materials Science, Kiel University, Kaiserstrasse
2, D-24143 Kiel, Germany