1. Centre for Nanotechnology, Indian Institute of Technology Guwahati, Guwahati, Assam 781039, India
2. Department of Chemical Engineering, Indian Institute of Technology Guwahati, Guwahati, Assam 781039, India
3. Department of Ocular Pathology, Uveitis & Neuro-Ophthalmology Services, Sri Sankaradeva Nethralaya, Guwahati, Assam 781028, India