Graphene film blocks wireless signals

Graphene film blocks wireless signals

By Science News Staff, 17:44 PM February 21, 2014

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. T...

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