Graphene sheets inspired from moth's eyes could power 'smart wallpapers': Scientists

London: New ultra-thin, patterned graphene sheets developed by scientists could enable future applications such as "smart wallpaper" generating electricity from waste light or heat, and power a host of applications within the growing "internet of things," says a new study.

A form of carbon just one atom thick, graphene is very strong and an excellent electronic material, but is inefficient for optical applications as it absorbs only 2.3 percent of the light falling on it. However using a new technique, scientists enhanced its light absorption by 90 percent.

Image courtesy: University of Sussex

Representational photo. Image courtesy: University of Sussex

In the study, published recently in Science Advances, researchers from Britain's University of Surrey, inspired by nature, used nanotexturing to create the most light-absorbent graphene for its weight, to date.

"Nature has evolved simple yet powerful adaptations, from which we have taken inspiration in order to answer challenges of future technologies.

"Moths' eyes have microscopic patterning that allows them to see in the dimmest conditions. These work by channelling light towards the middle of the eye, with the added benefit of eliminating reflections, which would otherwise alert predators of their location," said professor Ravi Silva, head of the Advanced Technology Institute at Surrey.

"We used the same technique to make an amazingly thin, efficient, light-absorbent material by patterning graphene in a similar fashion," he added.

Smart applications of this ultra-thin graphene could be more efficient solar cells and new types of sensors and energy harvesters.

"Solar cells coated with this material would be able to harvest very dim light. Installed indoors, as part of future 'smart wallpaper' or 'smart windows', this material could generate electricity from waste light or heat, powering a numerous array of smart applications. New types of sensors and energy harvesters connected through the internet of things would also benefit from this type of coating," said Silva.

"The next step is to incorporate this material in a variety of existing and emerging technologies," he said.


Updated Date: Mar 01, 2016 16:16 PM

Also Watch

Watch: The true stories from Dharavi that inspired Rajinikanth's Kaala
  • Thursday, March 8, 2018 Watch: Cyrus Khan talks about Parkour, jumping across walls and why he hates sitting
  • Thursday, May 31, 2018 Unwind: India's basketball sensation Amjyot Singh has his eyes set on becoming an NBA regular
  • Monday, May 28, 2018 First Day First Showsha — Review of Solo: A Star Wars Story in 10 questions
  • Saturday, May 19, 2018 Social Media Star: Rajkummar Rao and Bhuvan Bam open up about selfie culture, online trolls

Also See