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Related Concept Videos

Field Effect Transistor01:29

Field Effect Transistor

634
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...
634

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Nanomaterial-Based Biosensors using Field-Effect Transistors: A Review.

T Manimekala1,2, R Sivasubramanian2, Gnanaprakash Dharmalingam1

  • 1Plasmonic Nanomaterials Laboratory, PSG Institute of Advanced Studies, Peelamedu, Coimbatore, Tamilnadu 641004 India.

Journal of Electronic Materials
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Summary

Field-effect transistor biosensors (Bio-FETs) offer high sensitivity for detecting various biomarkers. Nanomaterial-based Bio-FETs show promise for portable diagnostics and advanced sensing applications.

Keywords:
Bio-FETcarbon nanotubesdopamineglucosemetal oxidenanomaterialnucleic acidsilicon nanowire

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Area of Science:

  • Biosensors and electronic devices
  • Nanomaterials in sensing technology

Background:

  • Field-effect transistor biosensors (Bio-FETs) are gaining attention for their sensitivity, selectivity, and integration into portable electronics.
  • The performance of Bio-FETs depends critically on the bio-recognition layer and transducer for stability and sensitivity.

Purpose of the Study:

  • To review the fundamental concepts, working principles, and recent advancements in nanomaterial-based Bio-FETs.
  • To highlight the application of these biosensors in detecting various biomarkers including neurotransmitters, glucose, nucleic acids, proteins, viruses, and cancer markers.

Main Methods:

  • Review of current literature on nanomaterial-based Field-effect transistor biosensors.
  • Focus on the application of nanomaterials in enhancing Bio-FET performance for specific analyte detection.

Main Results:

  • Nanomaterials significantly improve the sensitivity, stability, and selectivity of Bio-FETs.
  • Successful detection of diverse analytes such as neurotransmitters, glucose, nucleic acids, proteins, viruses, and cancer biomarkers has been demonstrated.

Conclusions:

  • Nanomaterial-based Bio-FETs are highly promising for sensitive and selective biosensing.
  • Further research and development are needed to overcome current challenges and realize the full potential of nano Bio-FETs in various applications.