Enhanced Gas-Flow-Induced Voltage in Graphene

Details Enhanced Gas-Flow-Induced Voltage in Graphene Enhanced Gas-Flow-Induced Voltage in Graphene

2011-07-15

arxiv.org/abs/1107.3049v1

Physics

Condensed Matter

Materials Science

Scientific paper

We show by systemically experimental investigation that gas-flow-induced voltage in monolayer graphene is more than twenty times of that in bulk graphite. Examination over samples with sheet resistances ranging from 307 to 1600 {\Omega}/sq shows that the induced voltage increase with the resistance and can be further improved by controlling the quality and doping level of graphene. The induced voltage is nearly independent of the substrate materials and can be well explained by the interplay of Bernoulli's principle and the carrier density dependent Seebeck coefficient. The results demonstrate that graphene has great potential for flow sensors and energy conversion devices.

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