Nenocrystals to Boost Wi-Fi emmiting LEDs
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For communication purpose, nowadays we simply use internet. we can use either mobile data or wifi or bluetooth. such technologies operates on invisible radio waves. By using these technologies, we can transmit data on different wavelengths, this turns out to be more secure,safe and efficient.therefore,it provides higher speed to users.
Recently researchers at KAUST(King Abdullah University of Science & Technology) developed a Nanocrystal that can help to increase data speeds which is transmitted through a visible light LED. By using this Nanocrystal, we can boost the data speed and experience high speed.
Only a fraction of the electromagnetic spectrum is visible to the human eye, and making use of those wavelengths could lead to faster, safer and more efficient wireless data systems. With so many wireless signals attemptes for the attention of devices, certain frequencies can become clogged,and radio waves can interfere with sensitive equipment used for navigation. Visible-light communication ( VLC ) systems may help in resolving those issues.
VLC devices are based on LEDs which uses phosphorus to turn some of the blue light emitted by a diode into red and green. When this lights are combined(the red, blue and green) it forms white light, which is comfortably lighting a room while providing a wireless signal. But this technique has its limits & drawbacks.
“VLC using white light generated in this way is limited to about one hundred million bits per second,” says Boon Ooi, a KAUST Professor. University of Virginia study reached 300 Mbps, and Siemens managed 500 Mbps. Pennsylvania State University has even hit 1.6 Gbps.
KAUST reached to 2 gbps using visible light, transforming the colored light into white using Nanocrystal instead of using phosphorus.
Nanocrystals are 8 nm long & made of cesium lead bromide. it emits green light when hitted by a blue laser.whereas phosphorus emits red light, and three colors combine to form white light which is comparable to existing LEDs.
Because of the Nanocrystals, the data transferred is done through series of quick flashes which is clear to capture by receiver but imperceivable to human eye.The optical processes operate on a time-scale of about seven nanoseconds, meaning the optical emission of the light operates at a frequency of 491 MHz. That in turn allows the data to be transmitted at 2 Gbps, although other research indicates VLC could go as fast as 10 Gbps.
Nanocrystals provides faster responce that is due to its small size.therfore,it helps in speeding up wi-fi emitting LEDs. it helps in improving the speed and user experience.
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