BioWeave: Weaving Thread-Based Sweat-Sensing On-Skin Interfaces

There has been a growing interest in developing and fabricating wearable sweat sensors in recent years, as sweat contains various analytes that can provide non-invasive indications of various conditions in the body. Although recent HCI research has been looking into wearable sensors for understanding health conditions, textile-based wearable sweat sensors remain underexplored. We present BioWeave, a woven thread-based sweat-sensing on-skin interface. Through weaving single-layer and multi-layer structures, we combine sweat-sensing threads with versatile fiber materials. We identified a design space consisting of colorimetric and electrochemical sensing approaches, targeting biomarkers including pH, glucose, and electrolytes. We explored 2D and 3D weaving structures for underexplored body locations to seamlessly integrate sweat-sensing thread into soft wearable interfaces. We developed five example applications to demonstrate the design capability offered. The BioWeave sensing interface can provide seamless integration into everyday textile-based wearables and offers the unobtrusive analysis of health conditions.