Journal
ACS NANO
Volume 5, Issue 3, Pages 1990-1994Publisher
AMER CHEMICAL SOC
DOI: 10.1021/nn103043v
Keywords
reduced graphene oxide; field-effect transistors; metal ion detection; nanoelectronic detection
Categories
Funding
- MOE [RG 20/07, MOE2010-T2-1-060]
- NRF [NRF-CRP2-2007-01]
- A*STAR [092 101 0064, 072 101 0020]
- NTU [M58120031]
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The electrical property of graphene is highly sensitive to its local environment, which makes graphene an ideal channel material in electronic sensors. Reduced graphene oxide (rGO) has been used as the desirable alternative to the pristine graphene due to its low-cost, solution-processable, and scalable production. In this paper, we present a field-effect transistor sensor using micropatterned, protein-functionalized rGO film as the conducting or sensing channel. Such a nanoelectronic sensor is able to detect various metal ions in real-time with high sensitivity.
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