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Sensing of Barrier Tissue Disruption with an Organic Electrochemical Transistor
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Voltage Amplifier Based on Organic Electrochemical Transistor.

Marcel Braendlein1, Thomas Lonjaret2, Pierre Leleux1

  • 1Department of Bioelectronics Ecole Nationale Supérieure des Mines CMP-EMSE, MOC Gardanne 13541 France.

Advanced Science (Weinheim, Baden-Wurttemberg, Germany)
|January 21, 2017
PubMed
Summary

Organic electrochemical transistors (OECTs) now offer voltage output for electrophysiology. This advancement enables high-quality human heart recordings, facilitating clinical applications.

Keywords:
device physicselectrocardiographyorganic electronicspoly(3,4‐ethylenedioxythiophene):poly(styrene sulfonate)voltage amplifier circuit

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Area of Science:

  • Biomedical Engineering
  • Materials Science

Background:

  • Organic electrochemical transistors (OECTs) are promising amplifying transducers for electrophysiology.
  • A major limitation is their current output, incompatible with standard voltage-input electrophysiology equipment.

Purpose of the Study:

  • To develop a circuit enabling voltage output from OECTs for electrophysiology.
  • To demonstrate the suitability of OECTs for clinical electrophysiological recordings.

Main Methods:

  • A simple circuit incorporating a drain resistor was designed and modeled.
  • OECTs were operated in the saturation regime to optimize performance.

Main Results:

  • The circuit successfully converted OECT current output to voltage output.
  • Operation in saturation regime enhanced sensitivity and maintained linear signal transduction.
  • High-quality recordings of the human heart were achieved.

Conclusions:

  • The developed circuit effectively addresses the output incompatibility of OECTs.
  • This work enables the clinical use of OECTs in electrophysiology.
  • OECTs show potential for widespread adoption in medical diagnostics.