Water motion near graphene and its electric conductivity
D.V. Sorokin1,2, D.A. Shatilov1,2, V.A. Andruschenko1, M.S. Makarov1, V.S. Naumkin3, D.V. Smovzh1,2
1Kutateladze Institute of Thermophysics SB RAS, Novosibirsk,Russia
2Novosibirsk State University, Novosibirsk,Russia
3Kutateladze Institute of Thermophysics SB RAS, Novosibirsk, Russia
Keywords: graphene, chemical deposition from gaseous phase, carbon, sensor, flow sensor
Abstract
The paper is the study of electric resistance of a graphene layer washed by a liquid with different flow rate parameters. Experiments demonstrate that if the fabricated composite (graphene upon a PET/EVA polymeric substrate) is submerged into distilled water, the sample resistance increases by 120 %. Meanwhile, the flow of liquid near the graphene layer decreases this gain in the electric conductivity. The effect offers a general design of a flow rate sensor based on the graphene layer, taken as a sensitive matrix. The study demonstrates that this design of graphene flow sensor (taken for distilled water) exhibits a linear dependency of the sensor resistance on flow rate.
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