Resettable Microfluidics for Broad-Range and Prolonged Sweat Rate Sensing

• DOI: 10.1021/acssensors.2c00177
• Publication Date: 2022-04-12T10:50:24Z
• Authors: Mallika Bariya; Noelle Davis; Liam Gillan; Elina Jansson; Annukka Kokkonen; Colm McCaffrey; Jussi Hiltunen; Ali Javey
• Keywords: Wearable Technology

Wearable sweat sensors are emerging as promising platforms for personalized and real-time tracking of evolving health fitness parameters. While most wearable focus on biomarker concentration profiles, secretion rate is a key metric with broad implications assessing hydration, cardiac, neural conditions. Here we present microfluidic sensor continuous measurement. A discrete impedimetric sensing scheme relying interdigitated electrodes within collector allows precise selective measurement across physiological range. Integration manually activated pressure pump to expel from the device prevents saturation enables over hours. By enabling range prolonged measurement, this platform tackles obstacle realizing meaningful actionable applications in exercise physiology medicine.