1. MEMS, Microfluidics and Nanoelectronics Lab, Department of Electrical and Electronics EngineeringBITS‐Pilani, Hyderabad Campus Hyderabad 500078 India
2. Center for NanosciencesIndian Institute of Technology Kanpur Kanpur 208016 India
3. Defence Materials and Stores R&D Establishment (DMRSE), Defence Research and Development Organisation GT Road Kanpur 208013 India