Quantcast
ZME Science
  • News
  • Environment
  • Health
  • Future
  • Space
  • Features
  • More
    • About
    • The Team
    • Advertise
    • Contribute
    • Our stance on climate change
    • Privacy Policy
    • Contact
No Result
View All Result
ZME Science

No Result
View All Result
ZME Science
No Result
View All Result
Home Science Chemistry

Graphene proves to be fantastic radio waves absorber

Tibi Puiu by Tibi Puiu
February 26, 2014
in Chemistry, Materials, News
Reading Time: 1 min read
A A
Share on FacebookShare on TwitterSubmit to Reddit
Sorry to interrupt, but you should really...

...Join the ZME newsletter for amazing science news, features, and exclusive scoops. More than 40,000 subscribers can't be wrong.

   

Ultra strong, a fantastic electrical conductor, and even suitable for better beer storage, graphene is dazzling the w0rld with its potential applications. Now, it seems there’s another use to add for the growing list of applications for the atom thick hexagon carbon structure. Scientists at Queen Mary University of London and the Cambridge Graphene Centre found that simply by layering a sheet of graphene over a surface increases the latter’s radio wave absorption by up to 90%. This means that you could actually coat the surfaces of an enclosure and make it secure against radio communication.

(a) Photograph of the experimental set-up. Red lines refer to the incident wave from the transmitter to the sample; green lines represent the reflected wave from the sample to the receiver. The H-grating transmits vertically polarized waves but reflects horizontally polarized waves. The 45D grating selects the E-field components with 45° rotation. (b) Photograph of the transparent absorber consisting of graphene-quartz samples backed with a metal plate
(a) Photograph of the experimental set-up. Red lines refer to the incident wave from the transmitter to the sample; green lines represent the reflected wave from the sample to the receiver. The H-grating transmits vertically polarized waves but reflects horizontally polarized waves. The 45D grating selects the E-field components with 45° rotation. (b) Photograph of the transparent absorber consisting of graphene-quartz samples backed with a metal plate. Photo: Science

According to the paper published in the journal Science,  stacked graphene layers increased the absorption of millimeter waves  over a wide bandwidth (125 — 165 GHz, which could be extended down to microwave frequencies) without blocking visibility, since the monolayer graphene is ~98% transparent. With this in mind, one can think of coating the windows of a building with a graphene solution and block radio waves. Businesses or institutions looking to improve their wireless network security would definitely be interested in this.

ADVERTISEMENT
ADVERTISEMENT

Tags: graphene
ShareTweetShare
Tibi Puiu

Tibi Puiu

Tibi is a science journalist and co-founder of ZME Science. He writes mainly about emerging tech, physics, climate, and space. In his spare time, Tibi likes to make weird music on his computer and groom felines.

ADVERTISEMENT
ADVERTISEMENT
  • News
  • Environment
  • Health
  • Future
  • Space
  • Features
  • More

© 2007-2019 ZME Science - Not exactly rocket science. All Rights Reserved.

No Result
View All Result
  • News
  • Environment
  • Health
  • Future
  • Space
  • Features
  • More
    • About
    • The Team
    • Advertise
    • Contribute
    • Our stance on climate change
    • Privacy Policy
    • Contact

© 2007-2019 ZME Science - Not exactly rocket science. All Rights Reserved.