Li-Fi tagged posts

Li-fi, a communication technology harnessing visible light for data transmission, has a potential to surpass Wi-Fi’s speed by more than 100 times and boasts a high bandwidth, facilitating the simultaneous transmission of copious information. Notably, Li-fi ensures robust security by exclusively transmitting data to areas illuminated by light.

Most important, it capitalizes on existing indoor lighting infrastructure, such as LEDs, eliminating the need for separate installations. However, implementing visible light communication (VLC) in practical lighting systems poses an issue of diminished stability and accuracy in data transmission.

How does visible light communications (VLC) work? Credit: pureLiFi

Will solar-powered wireless communication benefit millions in the years to come? That is the hope of enthusiasts seeing a future in Li-Fi, wireless technology which is wireless—only not as we know it. Li-Fi, coined by University of Edinburgh’s Professor Harald Haas, is a wireless technology which refers to visible light communications (VLC) technology delivering a high-speed, bidirectional networked, mobile communications in a similar manner as Wi-Fi.

How does visible light communications (VLC) work? Credit: pureLiFi

Li-Fi technology can be integrated with solar cells to receive data. Solar panels on houses or smart watches can absorb power and receive data at the same time...

This schematic illustrates the novel nanosheet with three parallel segments created by the researchers, each supporting laser action in one of three elementary colors. The device is capable of lasing in any visible color, completely tunable from red, green to blue, or any color in between. When the total field is collected, a white color emerges. Credit: ASU/Nature Nanotechnology

More luminous, energy efficient than LEDs, white lasers look to be the future in lighting and Li-Fi, light-based wireless communication. Arizona State Uni researchers proved semiconductor lasers can emit over the full visible color spectrum: necessary to produce a white laser.

They created a novel nanosheet – thin layer of semiconductor ~1/5 of the thickness of human hair in size -with 3 parallel segments, eac...