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Electrical probing of submicroliter liquid using graphene strip transistors built on a nanopipette
Journal article   Peer reviewed

Electrical probing of submicroliter liquid using graphene strip transistors built on a nanopipette

Chang-Hsiao Chen, Cheng-Te Lin, Yi-Hsien Lee, Keng-Ku Liu, Ching-Yuan Su, Wenjing Zhang and Lain-Jong Li
Small, Vol.8(1), pp.43-46
09/01/2012
DOI: https://doi.org/10.1002/smll.201101859

Abstract

field-effect transistors graphene liquid gating nanopipettes pH sensing
Graphene sheets made by chemical vapor deposition are transferred onto a glass nanopipette to form graphene strips. Two strips are connected at the nanopipette tip end to form a transistor channel. This graphene-based transistor can be operated in a liquid-gating condition, thereby allowing the electrical detection of the pH value of a droplet with submicroliter volume. Copyright © 2012 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.

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