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Infrared vision lets researchers see through -- and into -- multiple layers of graphene
Date:11/21/2013

UB and the U.S. Naval Research Laboratory.

So, why don't all graphene layers affect the polarization of light the same way?

Cerne says the answer lies in the fact that different layers absorb and emit light in different ways.

The study showed that absorption and emission patterns change when a magnetic field is applied, which means that scientists can turn the polarization of light on and off either by applying a magnetic field to graphene layers or, more quickly, by applying a voltage that sends electrons flowing through the graphene.

"Applying a voltage would allow for fast modulation, which opens up the possibility for new optical devices using graphene for communications, imaging and signal processing," said first author Chase T. Ellis, a former graduate research assistant at UB and current postdoctoral fellow at the Naval Research Laboratory.


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Contact: Charlotte Hsu
chsu22@buffalo.edu
716-645-4655
University at Buffalo
Source:Eurekalert  

Page: 1 2

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