Thermal and Moisture Managing E-Textiles Enabled by Janus Hierarchical Gradient Honeycombs

Area of Science:

• Materials Science
• Textile Engineering
• Wearable Technology

Background:

• Comfort in wearable electronic textiles (e-textiles) is vital for applications like health monitoring and sports training.
• Simultaneously managing thermal and moisture comfort without impacting electronic performance is a significant challenge.

Purpose of the Study:

• To develop a thermal and moisture managing e-textile (TMME-textile) with integrated unidirectional water transport, radiative cooling, and sensing capabilities.
• To address the challenge of maintaining user comfort in e-textiles during prolonged use and high-intensity activities.

Main Methods:

• Fabrication of TMME-textile using Janus hierarchical gradient honeycombs with patterned sensing electrodes.
• Incorporation of unidirectional water transport for sweat management.
• Integration of high solar reflectivity and mid-infrared emissivity for radiative cooling.

Main Results:

• The TMME-textile demonstrates unidirectional sweat pumping, creating a dry microenvironment.
• Achieved significant skin temperature reduction (≈7.0 °C) due to radiative cooling properties (98.3% solar reflectivity, 89.2% emissivity).
• The integrated strain sensor exhibits high sensitivity (0.1749 kPa⁻¹) and a rapid response rate (170 ms).

Conclusions:

• The developed TMME-textile effectively manages thermal and moisture comfort while maintaining sensitive electronic sensing.
• This technology enables reliable long-term monitoring for applications like outdoor sports, overcoming challenges posed by thermal and moisture stress.