Title :
Sensing with liquid-gated graphene field-effect transistors
Author :
Fu, Wangyang ; Nef, Cornelia ; Tarasov, Alexey ; Wipf, Mathias ; Stoop, Ralph ; Knopfmacher, Oren ; Weiss, Markus ; Calame, Michel ; Schönenberger, Christian
Author_Institution :
Dept. of Phys., Basel Univ., Basel, Switzerland
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.
Keywords :
biochemistry; chemical sensors; electrolytes; field effect transistors; graphene; pH; defect-free graphene; electrolyte composition; graphene-based biochemical sensing platform; ion-induced gate shift; liquid-gated graphene field-effect transistor; noncovalent functionalization; pH; Biosensors; Logic gates; Transistors; Graphene; field-effect transistors; liquid gate; sensors;
Conference_Titel :
Nanotechnology (IEEE-NANO), 2012 12th IEEE Conference on
Conference_Location :
Birmingham
Print_ISBN :
978-1-4673-2198-3
DOI :
10.1109/NANO.2012.6321892
