What is Li-Fi?
Devices that use blinking lights to transmit data could provide the wireless Internet of the future. U.S. Navy-funded researchers are developing a form of visible light-based communication that transmits data using fast-blinking LEDs rather than Wi-Fi's familiar radio waves. A paper published earlier this year in Nature Nanotechnology could help Li-Fi take a step forward.Its authors have fabricated an artificial material with a quirky response to light that may eventually speed up light-based data transmission. Li-Fi works a like Morse code, with LED blinks corresponding to the zeros and ones of computer language.An LED light transmits flashes of light to a light detector lodged in a computing device, which translates the signal into digital data. The blinks are so rapid that the human eye cannot detect them. The faster the LED blinks, the faster it's possible to transmit data.
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