1. Department of Science & Technology Centre on Biomolecular Electronics, Biomedical Instrumentation Section, CSIR-National Physical Laboratory, New Delhi 110012, India
2. Department of Chemistry, Indian Institute of Technology Delhi, New Delhi 110016,
India
3. Department of Biotechnology, Delhi Technological University, Delhi 110042, India
4. Centre for NanoBioengineering & SpinTronics, Chungnam National University, 220 Gung-Dong, Yuseong-Gu, Daejeon 305764, South Korea