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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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Updated: Jun 19, 2026

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Graphene for self-powered biosensors: a perspective.

Seda Gungordu Er1, Mohan Edirisinghe1

  • 1Department of Mechanical Engineering, University College London, London, UK.

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|January 15, 2026
PubMed
Summary
This summary is machine-generated.

Graphene-based self-powered sensors offer autonomous real-time health monitoring by harvesting energy from various sources. Innovations in materials and fabrication enhance their performance for diverse applications.

Keywords:
biofuel cellsgraphene oxidegraphene-based biosensorsnanogeneratorpiezoelectricself-powered biosensortriboelectric

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Area of Science:

  • Materials Science and Engineering
  • Nanotechnology
  • Biomedical Engineering

Background:

  • Graphene's unique properties (conductivity, flexibility, biocompatibility) enable self-powered sensors.
  • Existing sensors often require external power, limiting real-time monitoring and autonomy.
  • Need for advanced sensing solutions in healthcare, environmental monitoring, and robotics.

Purpose of the Study:

  • To highlight advancements in graphene-based self-powered sensors for autonomous systems.
  • To review energy-harvesting strategies and material modifications for enhanced sensor performance.
  • To discuss practical implementations and future prospects of these technologies.

Main Methods:

  • Integration of graphene into nanocomposite architectures using scalable techniques like pressure spinning.
  • Functional modification of graphene with metal nanoparticles and conducting polymers.
  • Review of energy-harvesting mechanisms: triboelectric nanogenerators (TENGs), piezoelectric nanogenerators (PENGs), and biofuel cells (BFCs).

Main Results:

  • Graphene significantly enhances charge transfer and power output in energy-harvesting devices.
  • Nanocomposite architectures improve surface area, sensing efficiency, and manufacturability.
  • Modified graphene sensors demonstrate stability and specificity for biomarker detection in biological fluids.

Conclusions:

  • Graphene-based self-powered sensors are crucial for next-generation bioelectronic platforms.
  • These sensors enable user-centered, autonomous, and intelligent sensing technologies.
  • Future research directions include scalability, long-term stability, and miniaturization.