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Surface-engineered porous MXene-elastomer composites-based ultra-sensitive pressure sensor assembled via

Dokyung Kim1, Dong-Weon Lee2, Jaesam Sim3,4

  • 1School of Mechanical Engineering, Chonnam National University, Gwangju, 61186, Republic of Korea.

Microsystems & Nanoengineering
|December 12, 2025
PubMed
Summary

Researchers developed a highly sensitive, flexible pressure sensor using a porous polymer sponge coated with Ti3C2Tx MXene. This wearable sensor accurately monitors human motion and controls assistive devices, overcoming limitations of conventional sensors.

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Area of Science:

  • Materials Science
  • Nanotechnology
  • Wearable Technology

Background:

  • Flexible and wearable devices need high-performance pressure sensors for human motion monitoring.
  • Conventional sensors face challenges with deformability and complex fabrication.
  • Weak adhesion between elastomers and nanomaterials is a key hurdle.

Purpose of the Study:

  • To develop an ultra-sensitive pressure sensor with enhanced adhesion for flexible and wearable applications.
  • To overcome the limitations of conventional pressure sensors in terms of deformability and fabrication complexity.
  • To create a stable MXene-based network for high-sensitivity pressure detection.

Main Methods:

  • Fabrication of a porous polymer sponge using a sugar template.
  • Coating the sponge with Ti3C2Tx MXene nanosheets via dip-coating.
  • Chemical surface treatment of the elastomer with surfactants to improve MXene adhesion.

Main Results:

  • A stable, ultra-sensitive pressure sensor with enhanced elastomer-MXene adhesion was created.
  • The sensor demonstrated high sensitivity across a broad pressure range, detecting subtle and large forces.
  • The sensor exhibited rapid response times due to its low stiffness and porous structure.

Conclusions:

  • The developed Ti3C2Tx MXene-coated porous polymer sponge is a promising ultra-sensitive pressure sensor.
  • This sensor enables effective human motion monitoring and control of wearable assistive devices.
  • The fabrication method offers a simple and effective approach for creating advanced flexible sensors.