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Related Concept Videos

Field Effect Transistor01:29

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Field-effect transistors (FETs) are integral to electronic circuits and distinguished by their three-terminal setup: the gate, drain, and source. These transistors operate as unipolar devices, which utilize either electrons or holes as charge carriers, in contrast to bipolar transistors, which use both types of carriers. The primary function of the FET is to modulate the flow of these carriers from the source to the drain through a channel. The voltage difference between the gate and source...
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Microbial biosensors are analytical devices that utilize living microbes to detect specific substances through measurable signals. These devices consist of two main components: biosensing organisms and signal-transducing elements. Biosensing organisms, such as Escherichia coli or Saccharomyces cerevisiae, are typically housed in multiwell plates connected to transducers, enabling rapid, real-time detection of target analytes.Signal Generation MechanismWhen a target analyte—such as...
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Related Experiment Video

Updated: Apr 26, 2026

Development and Functionalization of Electrolyte-Gated Graphene Field-Effect Transistor for Biomarker Detection
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Graphene field-effect transistor and its application for electronic sensing.

Beibei Zhan1, Chen Li, Jun Yang

  • 1Key Laboratory for Organic Electronics & Information Displays (KLOEID), Nanjing University of Posts and Telecommunications, Nanjing, 210046, China.

Small (Weinheim an Der Bergstrasse, Germany)
|July 22, 2014
PubMed
Summary

Graphene-based field-effect transistors (GFETs) offer high sensitivity for electronic sensors. This review covers GFET fabrication, characterization, and applications in physical, chemical, and biological detection, alongside future challenges.

Keywords:
field-effect transistorsgraphenesensing

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Area of Science:

  • Materials Science
  • Nanotechnology
  • Electronics

Background:

  • Graphene possesses exceptional mechanical, electrical, chemical, and physical properties.
  • Graphene-based field-effect transistors (GFETs) show promise for advanced sensing applications due to enhanced sensitivity and selectivity.

Purpose of the Study:

  • To review key aspects of GFETs for electronic sensing applications.
  • To highlight recent advancements and future challenges in GFET development.

Main Methods:

  • Fabrication and characterization techniques for GFETs.
  • Review of GFET applications in physical, chemical, and biological electronic detection.

Main Results:

  • GFETs demonstrate significant potential for high-performance electronic sensors.
  • New developments showcase the versatility of GFETs across various detection modalities.

Conclusions:

  • GFETs are a promising platform for next-generation electronic sensors.
  • Further research is needed to address current challenges and explore new development avenues.