1. Department of Electrical Engineering, Indian Institute of Technology Hyderabad, Hyderabad 502284, India
2. Department of Chemistry, Indian Institute of Technology Hyderabad, Hyderabad 502284, India
3. Department of Chemistry, The Chinese University of Hong Kong, Shatin, NT 00000, Hong Kong SAR, China
4. Department of Biomedical Engineering, Indian Institute of Technology Hyderabad, Hyderabad 502284, India