Graphene 'could help boost broadband internet speeds'

squadMCU — Fri, 08 Oct 2021 03:34:38 GMT

Current Revision posted to Documents by squadMCU on 10/8/2021 3:34:38 AM

Scientists from Manchester and Cambridge universities, have found a way to improve its sensitivity when used in optical communications systems.

Their discovery paves the way for faster electronic components, such as the receivers used in fibre optic data connections.

Graphene was discovered in 2004 and has been hailed as a "wonder material".

Optical communications

The material's use in photo-electrical systems is not new.

Scientists had previously managed to produce a simple solar cell by placing microscopic metallic wires on top of graphene sheets and shining light onto them.

Its superconductive properties meant that electrons could flow at high speed with extreme mobility.

However, early graphene solar cells were not very efficient, as the material was only capable of absorbing about 3% of visible light, with the rest shining through without being converted into power.

The latest research, overcomes that problem by using a method, known as plasmonic enhancement, to combine graphene with tiny metallic structures called plasmonic nanostructures.

As a result, its light-harvesting performance is increased by a factor of 20.

"The technology of graphene production matures day-by-day, which has an immediate impact both on the type of exciting physics which we find in this material, and on the feasibility and the range of possible applications," said Prof Kostya Novoselov, one of the lead researchers.

"Many leading electronics companies consider graphene for the next generation of devices. This work certainly boosts graphene's chances even further."

His colleague Professor Andrea Ferrari from the University of Cambridge added that the results showed the material's "great potential in the fields of photonics and optoelectronics".

Details of the team's work have been published in the journal Nature Communications.

The scientists managed to increase the light-harvesting performance of graphene by 20 times

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Tags: communications, broadband, graphene, internet