New study reveals communications potential of graphene

Feb 19, 2014
Grafene consists of a single layer of carbon atoms. Credit: Wikimedia Commons

Providing secure wireless connections and improving the efficiency of communication devices could be another application for graphene, as demonstrated by scientists at Queen Mary University of London and the Cambridge Graphene Centre.

Often touted as a wonder material, is a one-atom thick layer of carbon with remarkable, record breaking properties. Until now its ability to absorb electromagnetic radiation – energy from across the – was not known.

Publishing in the journal Scientific Reports, the scientists demonstrated that the increased the absorption of by 90 per cent at a wide bandwidth.

"The technological potential of graphene is well-known. This paper demonstrates one example of how that potential can translate into a practical application," said Yang Hao, co-author of the study and Professor of Antennas and Electromagnetics at Queen Mary's School of Electronic Engineering and Computer Science.

"The transparent material could be added as a coating to car windows or buildings to stop radio waves from travelling through the structure. This, in turn, could be used to improve secure wireless network environments, for example."

The researchers placed a stack of layers of graphene supported by a metal plate and the mineral quartz to absorb the signals from a millimetre wave source, which allows the efficient control of wave propagation in complex environments.

Co-author Bian Wu, who is at Queen Mary from Xidian University in China on a scholarship from China Scholarship Council, added: "The stacking configuration gives us better control of the interaction between and the graphene."

The group is now developing prototypes like wireless networks, which are aimed to take the graphene from lab-based research to engineering applications.

Explore further: Scientists create perfect solution to iron out kinks in surfaces

More information: 'Experimental demonstration of a transparent graphene millimetre wave absorber with 28% fractional bandwidth at 140 GHz' will be published in the journal Scientific Reports on Wednesday 19 February.

add to favorites email to friend print save as pdf

Related Stories

Scientists produce a novel form of artificial graphene

Feb 14, 2014

A new breed of ultra thin super-material has the potential to cause a technological revolution. "Artificial graphene" should lead to faster, smaller and lighter electronic and optical devices of all kinds, ...

How to make graphene superconducting

Feb 11, 2014

Whenever a new material is discovered, scientists are eager to find out whether or not it can be superconducting. This applies particularly to the wonder material graphene. Now, an international team around ...

Engineers make world's smallest FM radio transmitter

Nov 18, 2013

A team of Columbia Engineering researchers, led by Mechanical Engineering Professor James Hone and Electrical Engineering Professor Kenneth Shepard, has taken advantage of graphene's special properties—its mechanical strength ...

Graphene growth on silver

Jan 14, 2014

Users from Northwestern University, working with the Center for Nanoscale Materials EMMD Group at Argonne, have demonstrated the first growth of graphene on a silver substrate.

Recommended for you

Thinnest feasible nano-membrane produced

Apr 17, 2014

A new nano-membrane made out of the 'super material' graphene is extremely light and breathable. Not only can this open the door to a new generation of functional waterproof clothing, but also to ultra-rapid filtration. The ...

Wiring up carbon-based electronics

Apr 17, 2014

Carbon-based nanostructures such as nanotubes, graphene sheets, and nanoribbons are unique building blocks showing versatile nanomechanical and nanoelectronic properties. These materials which are ordered ...

Making 'bucky-balls' in spin-out's sights

Apr 16, 2014

(Phys.org) —A new Oxford spin-out firm is targeting the difficult challenge of manufacturing fullerenes, known as 'bucky-balls' because of their spherical shape, a type of carbon nanomaterial which, like ...

User comments : 1

Adjust slider to filter visible comments by rank

Display comments: newest first

manifespo
not rated yet Feb 22, 2014
What doesn't graphene do?

More news stories

'Exotic' material is like a switch when super thin

(Phys.org) —Ever-shrinking electronic devices could get down to atomic dimensions with the help of transition metal oxides, a class of materials that seems to have it all: superconductivity, magnetoresistance ...

Innovative strategy to facilitate organ repair

A significant breakthrough could revolutionize surgical practice and regenerative medicine. A team led by Ludwik Leibler from the Laboratoire Matière Molle et Chimie (CNRS/ESPCI Paris Tech) and Didier Letourneur ...

Impact glass stores biodata for millions of years

(Phys.org) —Bits of plant life encapsulated in molten glass by asteroid and comet impacts millions of years ago give geologists information about climate and life forms on the ancient Earth. Scientists ...