Recently, researchers at the University of Michigan published a smart contact lens manufacturing program that enables the wearer to have "infrared night vision" capabilities.
The researchers said that sandwiching graphene between two lenses creates a sensor that can capture both visible and infrared light. The sensor can be as sensitive as the CMOS silicon image sensor used in commercial digital cameras. Currently, the research team has made a prototype that is smaller than a fingernail, and in the future it may be embedded in the lens to provide night vision to people in need. Zhong Zhaohui of the University of Michigan, USA, said that if the device is combined with contact lenses or other wearable devices, it can expand the user's vision and provide night vision capabilities.
Graphene is the thinnest and hardest nanomaterial in the world. It is one million times thinner than paper and almost completely transparent. In addition, graphene is a promising candidate for ultra-wideband photodetectors. When exposed to photons, graphene turns into so-called “hot carriers†that absorb ultraviolet to far-infrared spectra. Scientists can measure, process, and convert this effect into images.
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