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Sensing with liquid-gated graphene field-effect transistors
Publisher
IEEE
Place of Publication
New York
ISSN/ISBN
1944-9399 ; 978-1-4673-2198-3 ; 978-1-4673-2200-3
Series title
2012 12th IEEE Conference on Nanotechnology
Keywords
Graphene; liquid gate; field-effect transistors; sensors; films
Abstract
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.
