CUED Publications database

Self-assembled electrical biodetector based on reduced graphene oxide.

Kurkina, T and Sundaram, S and Sundaram, RS and Re, F and Masserini, M and Kern, K and Balasubramanian, K (2012) Self-assembled electrical biodetector based on reduced graphene oxide. ACS Nano, 6. pp. 5514-5520.

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Abstract

Large-scale fabrication of graphene-based devices is an aspect of great importance for various applications including chemical and biological sensing. Toward this goal, we present here a novel chemical route for the site-specific realization of devices based on reduced graphene oxide (RGO). Electrodes patterned by photolithography are modified with amino functional groups through electrodeposition. The amine groups function as hooks for the attachment of graphene oxide flakes selectively onto the electrodes. Graphene-like electrical behavior is attained by a subsequent thermal annealing step. We show that this anchoring strategy can be scaled-up to obtain RGO devices at a wafer scale in a facile manner. The scalability of our approach coupled with the use of photolithography is promising for the rapid realization of graphene-based devices. We demonstrate one possible application of the fabricated RGO devices as electrical biosensors through the immunodetection of amyloid beta peptide.

Item Type: Article
Uncontrolled Keywords: Biosensing Techniques Conductometry Equipment Design Equipment Failure Analysis Graphite Immunoassay Nanotechnology Oxides
Subjects: UNSPECIFIED
Divisions: Div B > Solid State Electronics and Nanoscale Science
Depositing User: Cron Job
Date Deposited: 07 Mar 2014 11:27
Last Modified: 08 Dec 2014 02:13
DOI: 10.1021/nn301429k