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Related Concept Videos

Microbial Biosensors01:17

Microbial Biosensors

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: Jun 9, 2026

Fabrication of Carbon Nanotube High-Frequency Nanoelectronic Biosensor for Sensing in High Ionic Strength Solutions
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Fabrication of Carbon Nanotube High-Frequency Nanoelectronic Biosensor for Sensing in High Ionic Strength Solutions

Published on: July 22, 2013

Nanotubes in biosensing.

Jianping Lei1, Huangxian Ju

  • 1Department of Chemistry, Key Laboratory of Analytical Chemistry for Life Science (Ministry of Education of China), Nanjing University, Nanijng 210093, PR China.

Wiley Interdisciplinary Reviews. Nanomedicine and Nanobiotechnology
|August 31, 2010
PubMed
Summary
This summary is machine-generated.

Carbon nanotubes (CNTs) offer unique properties for biosensing. This review covers CNT functionalization and applications in detecting DNA, cells, and biomolecules for in vivo and in vitro uses.

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Area of Science:

  • Materials Science
  • Nanotechnology
  • Biomedical Engineering

Background:

  • Carbon nanotubes (CNTs) possess unique electrical, chemical, and mechanical properties.
  • These properties make them highly suitable for developing advanced biosensors.
  • CNTs are widely explored for both electrochemical and optical biosensing applications.

Purpose of the Study:

  • To review functionalization strategies for carbon nanotubes in biosensing.
  • To provide an overview of CNT-based biosensing methodologies for various biomolecules.
  • To discuss the in vivo and in vitro applications of CNT biosensors.

Main Methods:

  • Review of noncovalent functionalization (adsorption, entrapment) and covalent functionalization (carboxylate chemistry, reactive species).
  • Overview of biosensing methodologies utilizing functionalized CNTs for DNA, antigen-antibody, and cell detection.
  • Discussion of near-infrared fluorescence biosensing and field-effect transistor applications.

Main Results:

  • Functionalized CNTs enable diverse biosensing applications, including DNA, antigen-antibody, and cell detection.
  • In vivo near-infrared fluorescence biosensing with CNTs demonstrates high photostability and efficiency.
  • Field-effect transistors utilizing semiconductor CNTs offer ultrasensitive detection capabilities.

Conclusions:

  • Carbon nanotube-based biosensors represent a significant advancement for biomolecule detection.
  • Functionalization techniques enhance CNT performance for both in vivo and in vitro applications.
  • CNTs are crucial for developing next-generation ultrasensitive and efficient biosensing platforms.