High-Sensitivity Wearable Sensor Based On a MXene Nanochannel Self-Adhesive Hydrogel

Area of Science:

• Materials Science
• Nanotechnology
• Biomedical Engineering

Background:

• Traditional filler-based wearable hydrogels face limitations in conductivity and sensitivity.
• Existing Titanium carbide (Ti3C2) MXene-based hydrogels have structural constraints affecting performance.

Purpose of the Study:

• To develop a novel nanochannel hydrogel sensor with improved electrical properties and sensitivity.
• To overcome the shortcomings of conventional wearable hydrogel sensors.

Main Methods:

• Fabrication of a nanochannel hydrogel sensor by combining electrospun fiber textile with a double network hydrogel.
• Incorporation of continuously distributed Ti3C2 MXene within the hydrogel nanochannels, forming a neuron-like network structure.

Main Results:

• The Ti3C2 MXene nanochannel hydrogel exhibits enhanced electrical conductivity and sensitivity due to increased free space for micromovements.
• The hydrogel demonstrates excellent mechanical properties, self-adhesion, and antifreezing characteristics.
• The sensor successfully detected various human motions and physiological signals with high stability and sensitivity.

Conclusions:

• The developed Ti3C2 MXene nanochannel hydrogel sensor offers a promising advancement for flexible wearable devices.
• The unique interconnected nanochannel structure significantly improves sensor performance.
• This technology holds potential for applications in human motion monitoring and physiological signal detection.