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Sensing with liquid-gated graphene field-effect transistors

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9 Author(s)
Wangyang Fu ; Dept. of Phys., Basel Univ., Basel, Switzerland ; Nef, C. ; Tarasov, A. ; Wipf, M.
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Liquid-gated graphene field-effect transistors (GFETs) with reliable performance are developed. It is revealed that ideal defect-free graphene should be inert to electrolyte composition changes in solution, whereas a defective one responses to electrolyte composition. This finding sheds light on the large variety of pH or ion-induced gate shifts that have been published for GFETs in the recent literature. As a next step to target graphene-based (bio-) chemical sensing platform, non-covalent functionalization of graphene has to be introduced.

Published in:

Nanotechnology (IEEE-NANO), 2012 12th IEEE Conference on

Date of Conference:

20-23 Aug. 2012