D. Shobha - International Center for Materials Nanoarchitectonics,WPI Research Center, National Institute for Materials Science, 1-1 Namiki, Tsukuba, 305-0044, Japan, vinu.ajayan@nims.go.jp
M. Adharvana Chari - International Center for Materials Nanoarchitectonics,WPI Research Center, National Institute for Materials Science, 1-1 Namiki, Tsukuba, 305-0044, Japan, vinu.ajayan@nims.go.jp
L.-C. Sang - International Center for Materials Nanoarchitectonics,WPI Research Center, National Institute for Materials Science, 1-1 Namiki, Tsukuba, 305-0044, Japan, vinu.ajayan@nims.go.jp
Salem S. Aldeyab - King Saud University
K. Mukkanti - Centre for Chemical Sciences & Technology, Institute of Science & Technology, Jawaharlal Nehru Technological University, Kukatpally, Hyderabad 500085, Andhra Pradesh, India
A. Vinu - International Center for Materials Nanoarchitectonics,WPI Research Center, National Institute for Materials Science, 1-1 Namiki, Tsukuba, 305-0044, Japan, vinu.ajayan@nims.go.jp