Journal
ADVANCED FUNCTIONAL MATERIALS
Volume 23, Issue 43, Pages 5398-5402Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/adfm.201300519
Keywords
flexible electronics; pressure sensors; artificial skin; graphene bilayer; differential resistance
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A flexible yet electronically active composite that mimics mechanoreceptor neurons in the human skin is synthesized, generating voltage oscillations whose frequency increases with pressure. By encoding pressure into frequency, the sensor achieves a high pressure sensitivity (< 10 Pa). The ability to sense pressure and to amplify signals arises from the robust negative differential resistance of functionalized graphitic flakes in silicone.
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