Graphene Based Flow Sensors
P. Kaźmierczaka, J. Bindera, K. Boryczkoa, T. Ciukb, W. Strupińskib, R. Stępniewskia and A. Wysmołeka
aFaculty of Physics, University of Warsaw, L. Pasteura 5, 02-093 Warszawa, Poland
bInstitute of Electronic Materials Technology, Wólczyńska 133, 01-919 Warszawa, Poland
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We report on attempts to produce a graphene based liquid flow sensor. Our results indicate that modifications of the electric double layer, formed in the vicinity of the graphene surface, dominate over mechanisms responsible for liquid flow-induced voltage/current generation. Several graphene structures were tested in different measurement configurations, aimed to maximize the generated signal amplitude and its stability. Some realizations of working devices in water as well as in aqueous solutions of NaCl or HCl are presented.

DOI: 10.12693/APhysPolA.126.1209
PACS numbers: 68.65.Pq, 72.80.Vp, 73.30.+y