Nano-sized copper balls developed by IIT Madras researchers can detect extremely low concentrations of arsenic pollution in water. The sensors emit red luminescence and can detect arsenic in water even at one part per billion. The research has potential applications in industries like sensing, catalysis, and sustainability.
VILLUPURAM: The six CCTV cameras in six strong rooms where EVMs used for polling in the recently concluded Lok Sabha polls in the Villupuram reserved .