Mr. Sukanta Nandi, , Ph.D. student, Department: Instrumentation and Applied Physics, receives Dr. K. V. Rao Scientific Society Research Award in Physics. The 20th KVRSS Science Award event was held online on 16th September where Mr. Nandi was awarded the first prize in the Physics category. The award is presented by Dr. K.V. Rao Scientific Society, a non-profit organization with the head office stationed at Hyderabad, Telangana, India. The research awards are presented to young scientists (Research Scholars and Doctorates), below 30 years of age, from various branches of basic sciences every year. The award carries a cash award of Rs. 20,000/- only and a trophy for the winner and a cash award of Rs.10,000/- only and a trophy to the runners-up in each category- Chemistry, Physics, Biology, and Mathematics.
Title of presentation : Spray Coating of Two−Dimensional Suspended Film of Vanadium Oxide−Coated Carbon Nanotubes for Fabrication of a Large Volume Infrared Bolometer. A vanadium oxide−coated multiwall carbon nanotubes (MWCNT) based suspended bolometer was fabricated by novel spray coating and transfer method. The obtained temperature coefficient of resistance of suspended bolometer was ~486% higher than that reported in the literature for WCNT bolometer. Suspension of the CNT film reduces thermal link with the environment and thus effectively improves the bolometric performance. The developed fabrication technique also allows to attain a thin continuous transparent film of CNT with more than 95% transparency in a wide optical spectrum at room temperature. Spray coating of nanometre scale thick film thus provides a versatile platform to bring highly tuneable device performance on any kind of transparent and flexible substrates.
This work thus provides further insights into bolometric performance of MWCNT−based sprayed suspended bolometer. Further, the spray coating of such films together with the transfer technique opens avenues for developing high performing, large scale flexible devices. Reference: Nandi, S. and Misra, A., 2019. Spray Coating of Two-Dimensional Suspended Film of Vanadium Oxide-Coated Carbon Nanotubes for Fabrication of a Large Volume Infrared Bolometer.ACS Applied Materials & Interfaces, 12(1), pp.1315-1321.
A provisional patent for the invention has been filed at the Indian patent office.