1. Department of Chemical Engineering, Indian Institute of Technology, Guwahati, Assam 781039, India
2. Centre for Nanotechnology, Indian Institute of Technology, Guwahati, Assam 781039, India
3. Jyoti and Bhupat Mehta School of Health Sciences and Technology, Indian Institute of Technology Guwahati, Guwahati, Assam 781039, India