Dr. Sumit Saxena is Professor in the Department of Metallurgical Engineering and Materials Science at the Indian Institute of Technology Bombay, India. He obtained his doctoral degree at the New Jersey Institute of Technology, New York, the USA. Subsequently, he worked as Postdoctoral Research Associate at the Department of Materials Science, University of Illinois – Urbana Champaign, Illinois, the USA, and at the Department of Physics Harvard University, Cambridge, Massachusetts, the USA. He is a fellow of the Royal Society of Chemistry, UK; Institute of Materials, Minerals and Mining, UK; and National Environmental Science Academy, India.Dr. Shobha Shukla is Professor in the Department of Metallurgical Engineering and Materials Sciences at the Indian Institute of Technology, Bombay, India. She obtained her doctoral degree at the State University of New York/SUNY Buffalo, the USA. Subsequently, she worked as Postdoctoral Fellow at the School of Engineering and Applied Sciences Harvard University, Cambridge, Massachusetts, the USA. She is a senior member of the Optical Society of America and serves on the editorial board of Scientific Reports, Nanotechnology, and Journal of Physics-Photonics.Dr. Prasanna Kumar S Mural is Assistant Professor in the Department of Metallurgical Engineering and Materials Sciences at the Indian Institute of Technology, Bombay (IITB), India. He obtained his doctoral degree at the Indian Institute of Science, Bangalore, India. He worked as Postdoctoral Fellow at the Council for Scientific and Industrial Research (CSIR) in Pretoria, South Africa. Subsequently, he joined the National Institute of Technology Calicut, India as Assistant Professor before joining IITB.