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Recent Study Advances in Flexible Sensors Based on Polyimides.

Tianyong Zhang1,2,3, Yamei Chai1, Suisui Wang1

  • 1Tianjin Key Laboratory of Applied Catalysis Science and Technology, School of Chemical Engineering and Technology, Tianjin University, Tianjin 300354, China.

Sensors (Basel, Switzerland)
|December 23, 2023
PubMed
Summary

Polyimide (PI) based flexible sensors are crucial for healthcare and electronics. This review explores advanced PI applications in sensors, including nanofibers, aerogels, and photosensitive PI, highlighting their potential.

Keywords:
colorless polyimideelectrospinningfiber Bragg gratingflexible substratelaser-induced graphenephotosensitive polyimidepolyimidesensingtriboelectric nanogenerator

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Area of Science:

  • Materials Science
  • Electronics Engineering
  • Biomedical Engineering

Background:

  • Flexible electronics are vital for healthcare monitoring and wearable devices.
  • Polyimide (PI) shows significant but underexplored potential in sensor applications.
  • Advanced sensor technologies require novel materials for enhanced performance.

Purpose of the Study:

  • To review recent advancements in polyimide (PI)-based flexible sensors.
  • To explore diverse applications of PI in sensor design and fabrication.
  • To highlight the untapped potential of PI materials in the field of flexible electronics.

Main Methods:

  • Review of electrospinning for PI nanofibers as flexible substrates.
  • Analysis of PI aerogels in triboelectric nanogenerators (TENGs).
  • Examination of PI films in fiber Bragg grating (FBG) based relative humidity (RH) sensors.
  • Discussion of photosensitive PI (PSPI) as sacrificial layers.
  • Introduction to laser-induced graphene (LIG) for PI graphitization.

Main Results:

  • PI nanofibers serve as effective flexible substrates for sensors.
  • PI aerogels demonstrate utility as friction layers in TENGs.
  • PI films exhibit sensitivity in FBG-based RH sensors.
  • PSPI enables advanced fabrication techniques.
  • LIG offers a method for creating graphene from PI.

Conclusions:

  • Polyimide (PI) is a versatile material for advanced flexible sensor applications.
  • Diverse PI-based approaches enhance sensor performance in healthcare and electronics.
  • Further research into PI materials will drive innovation in flexible electronics.