1. Department of PhysicsIndian Institute of Technology Patna Bihta Bihar 801106 India
2. Department of ChemistryUniversity of Rochester Rochester NY 14620 USA
3. National Chemical Laboratory Pune 411008 India
4. Birck Nanotechnology CentrePurdue University West Lafayette IN 47907 USA
5. Global Innovative Center for Advanced Nanomaterials (GICAN)Faculty of Engineering and Built EnvironmentThe University of Newcastle Callaghan NSW 2308 Australia