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A monolithically integrated in-textile wristband for wireless epidermal biosensing
Xiaohao Ma1,2, Pengwei Wang2, Liting Huang1
1School of Microelectronics, Southern University of Science and Technology, Shenzhen 518055, China.
Science Advances
|November 10, 2023
Summary
This study presents a comfortable, integrated textile wristband for wireless epidermal biosensing. It offers excellent conductivity and breathability for reliable sweat potassium monitoring, advancing wearable health technology.
Area of Science:
- Materials Science
- Bioelectronics
- Wearable Technology
Background:
- Textile bioelectronics offer potential for noninvasive biosensing but face challenges with high electrical resistance and electronics integration.
- Existing flexible devices often lack the comfort and breathability required for prolonged epidermal contact.
Purpose of the Study:
- To develop an integrated textile wristband for wireless epidermal biosensing with enhanced comfort and performance.
- To overcome limitations of current textile bioelectronics regarding electrical properties and device integration.
Main Methods:
- Fabrication of an integrated wristband using in-textile metallic patterning and robust interconnect encapsulation.
- Characterization of electrical conductivity, mechanical robustness, waterproofness, air permeability, and moisture permeability.
- Performance evaluation through continuous sweat potassium monitoring.
Main Results:
- The wristband demonstrated excellent electrical conductivity, mechanical robustness, and waterproofness comparable to conventional flexible devices.
- High air permeability (79 mm s-1) and moisture permeability (270 g m-2 day-1) ensured superior wearing comfort.
- Continuous sweat potassium monitoring was achieved in the range of 0.3 to 40 mM with long-term stability.
Conclusions:
- The integrated textile wristband represents a significant advancement in wearable biosensing technology.
- This device shows great potential for applications in wearable fitness monitoring and point-of-care testing due to its comfort and reliable performance.
