New smart contact lenses come out
Release date: 2014-03-27
According to the British Daily Mail, researchers have recently developed a smart contact lens that gives the wearer the ability to "infrared night vision." The team said that by sandwiching graphene between the lenses, it is possible to build a sensor that captures visible and infrared light. A prototype that is smaller than the fingernails has been built, and experts say that this smart contact lens will be used in the future for soldiers and those who need to observe the environment in the dark. Zhong Zhaohui, an associate professor of electrical and computer engineering at the University of Michigan, said: "We can make ultra-thin lenses, combine them in contact lens lenses, or place them on mobile phones." Zhong Zhaohui designed lenses smaller than small nails. And it can be easily scaled down, and if it is incorporated into contact lenses or other wearable electronic devices, it will expand people's visual capabilities, and it provides another way to interact with their environment. This lens makes full use of the performance of graphene "super sensor", the electrons in graphene can move at high speed like photons, which is ten times the photon speed in silicon. It can be used as a kind of "hot carrier", and the resulting effects can be measured, processed, and converted into images. Currently, the research team has studied a method of sandwiching graphene with a sandwich that is as sensitive as a digital camera CMOS silicon image sensor. They point out that graphene is the material of choice for ultra-wideband photodetectors, which absorbs the spectrum of ultraviolet to far infrared. The latest study was published in the recently published journal Nature.
Source: Tencent Technology
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