Night vision contact lenses come closer to reality
Source: gadgets.ndtv.com
A smart contact lens is in the offing that could give its wearer infrared ’night vision’.
According to researchers from University of Michigan, by placing graphene inside the lens, they can build a sensor capable of capturing infrared light.A prototype is already here. Smaller than a fingernail, it could one day be built into lenses for soldiers and others who need to see in the dark.
"The layered approach can lead to ultra-thin sensors. We can make the entire design super-thin," explained Zhaohui Zhong, an assistant professor of electrical and computer engineering at University of Michigan.
"Graphene is a promising candidate material for ultra-broadband photo-detectors as its absorption spectrum covers the entire ultraviolet to far-infrared range," he added.
Graphene is made of a single layer of carbon atoms that are bonded together in a repeating pattern of hexagons. It is one million times thinner than paper.
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