IPFS News Link • Techno Gadgets
Engineers Build Radio Receiver Out Of Graphene
• technologyreview.comHere's a simple device. Stretch a sheet of graphene between two electrodes to form a kind of trampoline and then place a third electrode under the trampoline. Finally, send a DC current through the graphene and then add a radio frequency voltage on top to see what happens.
This is exactly the experiment that Yuehang Xu at Columbia University
in New York and pals have done. They say the graphene sheet resonates
when blasted with a voltage changing at radio frequency signals and that
this can be easily measured by monitoring the capacitance between the
sheet and the third electrode below the sheet.
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