Hyderabad: Researchers from Indian Institute of Technology (IIT), Guwahati have developed an innovative cost-effective method to identify toxic metals like mercury in human cells. The research team, have figured out a modification that ensures perovskite nanocrystals, known for their exceptional properties to detect metal ions, maintain their functionality over extended periods, making them highly effective for practical use, a press release said. Perovskite nanocrystals, which are about 10