GUWAHATI: Researchers at the Indian Institute of Technology Guwahati (IIT-G) have developed smart windows for automatic climate control of buildings, which can come handy in times of Covid by resisting the spread of the virus in residential apartments. These smart glasses can find applications for efficient automatic climate control in vehicles, locomotives, airplanes and greenhouses of the future. As Covid-19 has imposed an unprecedented risk of cross-infections through aerosol transmission in public buildings where central air-conditioning systems are in use, the experts believe that their smart windows can provide an alternative solution for maintaining ambient indoor temperature, thereby reducing the need of air-conditioning. Dr Debabrata Sikdar, assistant professor at the electronics and electrical engineering department of IIT-G, along with his research scholar, Ashish Kumar Chowdhary, from the premier technology institute, have designed the smart window materials that can effectively control the amount of heat and light passing through it in response to an applied voltage. The researchers said such smart window materials would help develop efficient automatic climate control systems.