1. Femtosecond Spectroscopy and Nonlinear Photonics Laboratory, Department of Physics, Indian Institute of Technology Delhi, New Delhi 110016, India
2. School of Advanced Materials Science and Engineering, Sungkyunkwan University, Suwon 16419, Republic of Korea
3. Department of Materials Science and Engineering, Yonsei University, Seoul 03722, Republic of Korea
4. Center for Human-oriented Triboelectric Energy Harvesting, Yonsei University, Seoul 03722, Republic of Korea
5. Smart Materials and Photonics Laboratory, Department of Physics, University of Lucknow, Lucknow 226007, India