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Development and Functionalization of Electrolyte-Gated Graphene Field-Effect Transistor for Biomarker Detection
Published on: February 1, 2022
Nanoelectronic biosensors based on CVD grown graphene
Yinxi Huang1, Xiaochen Dong, Yumeng Shi
1School of Chemical and Biomedical Engineering, Nanyang Technological University, Singapore.
Nanoscale
|September 8, 2010
Summary
Graphene field-effect transistors detect biomolecules like glucose in real-time. This novel nanoelectronic biosensor shows graphene
Area of Science:
- Materials Science
- Nanotechnology
- Biochemistry
Background:
- Graphene, a 2D carbon material, offers unique properties for biosensing.
- Graphene shows potential as an alternative to carbon nanotubes in biosensor development.
Purpose of the Study:
- To demonstrate graphene field-effect transistors for real-time biomolecular sensing.
- To explore graphene's utility in nanoelectronic biosensor applications.
Main Methods:
- Utilized large-sized CVD grown graphene films in field-effect transistor configurations.
- Functionalized graphene films with specific redox enzymes (glucose oxidase, glutamic dehydrogenase).
- Detected biomolecules via changes in graphene transistor conductance upon enzymatic oxidation.
Main Results:
- Successfully detected glucose and glutamate molecules.
- Observed conductance changes in graphene transistors correlated with biomolecule presence.
- Demonstrated real-time sensing capabilities.
Conclusions:
- Graphene is a promising material for developing advanced nanoelectronic biosensors.
- Graphene-based field-effect transistors enable sensitive and real-time detection of biomolecules.
- This technology offers a novel platform for biosensing applications.
