Latest Issue of Science News

5/2/15 Cover


Science Ticker

Your daily roundup of research news

Science News Staff
Science Ticker

Graphene film blocks wireless signals

graphene

A transparent film made of graphene (illustrated above) layered with quartz absorbed 90 percent of radio waves.

Sponsor Message

Guest post by Christopher Crockett

Want to secure an office against wireless hackers? Try smearing the windows with carbon.

Researchers in England have developed a transparent film that blocked 90 percent of radio waves. The material, described February 19 in Scientific Reports, is made from a stack of quartz layered with graphene — a one-atom-thick latticework of carbon atoms — that’s only several atoms thick.

The film could provide wireless security by absorbing unwanted radio transmissions. The next challenge for researchers is tuning the film to a wider range of frequencies and developing a method for making larger sheets.

More from Science News