1. Department of Metallurgical Engineering and Material Science, Indian Institute of Technology Bombay, Mumbai 400076, India
2. Department of Energy Science and Engineering, Indian Institute of Technology Bombay, Mumbai 400076, India
3. Department of Physics, Indian Institute of Technology Bombay, Powai, Mumbai 400076, India
4. Department of Mechanical Engineering, Colorado State University, Fort Collins, Colorado 80523, United States