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Updated: Jun 10, 2026
07:51
Development and Functionalization of Electrolyte-Gated Graphene Field-Effect Transistor for Biomarker Detection
Published on: February 1, 2022
Graphene field-effect transistors: electrochemical gating, interfacial capacitance, and biosensing applications
Fang Chen1, Quan Qing, Jilin Xia
1Center for Bioelectronics and Biosensors, the Biodesign Institute, Department of Electrical Engineering, Arizona State University, Tempe, AZ 85287, USA.
Chemistry, an Asian Journal
|August 18, 2010
Summary
Graphene
Area of Science:
- Materials Science
- Nanotechnology
- Electrochemistry
Background:
- Single-layer graphene's unique 2D structure drives significant research interest.
- Graphene's properties are highly sensitive to its surrounding environment.
- Graphene devices in solution are key for chemical and biological applications.
Purpose of the Study:
- To review graphene devices in solution for chemical and biological applications.
- To discuss graphene's charge transport, capacitance, and surface properties.
- To highlight graphene's potential in sensing and energy storage.
Main Methods:
- Electrochemical gating of graphene charge transport.
- Analysis of interfacial and quantum capacitance.
- Investigation of charged impurities and surface potential distribution.
Main Results:
- Graphene charge transport is highly sensitive to the solution environment.
- Interfacial and quantum capacitance are crucial for device performance.
- Surface potential distribution influences graphene's electronic properties.
Conclusions:
- Graphene's environmental sensitivity enables ultrasensitive chemical and biological sensors.
- Graphene-based ultracapacitors show promise for energy storage applications.
- Further research into solution-based graphene devices is warranted.
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