1. Department of Chemistry, School of Applied Science, REVA University, Bangalore, 560064, India
2. Department of Physics, School of Applied Science, REVA University, Bangalore, 560064, India
3. Department of Physics, School of Engineering, Presidency University, Bengaluru-560064, India
4. Department of Chemistry, Dayananda Sagar College of Engineering, Shavige Malleshwara Hills, Kumaraswamy Layout, Bengaluru, 560078, India
5. Department of Mechanical Engineering, Center for Nanofibers and Nanotechnology, National University of Singapore, Singapore