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IIT-Delhi alumni 'screens' Delhi's smog troubles

Backed with nano-technology, this mesh guards against harmful pollutants that ail New Delhi's atmosphere.

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The mesh is made of nanofibers designed by ex-students of IIT-D
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At a time when air purifiers and anti-pollution masks are becoming an accessory of 'capital' living, a group of former students from IIT-Delhi have devised a wire mesh to counter pollution. Backed with nano-technology, this mesh guards against harmful pollutants that ail New Delhi's atmosphere.

The deceptively ordinary-looking NCG (Nano Clean Global) window screen is the brainchild of Jatin Kewlani, Prateek Sharma and Tushar Vyas and can be used in homes, offices and commercial buildings as a cost-effective measure to curb pollution. It has earned the trio the (Indian National Academy of Engineering) INAE Young Innovators award to be presented by the Prime Minister later this year.

The dual-layer mesh is made of nano fibres designed by the trio using an indigenous, patented method. "The mesh blocks PM (Particulate Matter) 2.5 by 95 per cent without affecting air circulation," says Kewlani, who graduated in Civil Engineering, "It lets in ample light and keeps mosquitoes at bay. The screen also blocks UV rays."

The window screen is a second offering by the team after last year's solution to the same problem. The Naso Filter was conceived as an aesthetically pleasing and refined alternative to anti-pollution masks. "One of the biggest drawbacks of respiratory masks is they are prone to leakage," Kewlani said. "Also, their composition is such that over time we inhale our own stale breath due to multiple layers of filters. Besides, you are stared at."

The inconspicuous looking filter was to be used as a band-aid and is virtually invisible. The filter used a single layer of the same cotton-based filter media that the window screen is now based on. Priced at Rs 10 per strip, it fetched the trio the Startups National Award last year.

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