articleAdvanced MaterialsAug 18, 2017GREEN OA

Wearable Microfluidic Diaphragm Pressure Sensor for Health and Tactile Touch Monitoring

Lawrence Berkeley National Laboratory · Tianjin University · +3 more institutions

PubMed
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Abstract

Abstract Flexible pressure sensors have many potential applications in wearable electronics, robotics, health monitoring, and more. In particular, liquid‐metal‐based sensors are especially promising as they can undergo strains of over 200% without failure. However, current liquid‐metal‐based strain sensors are incapable of resolving small pressure changes in the few kPa range, making them unsuitable for applications such as heart‐rate monitoring, which require a much lower pressure detection resolution. In this paper, a microfluidic tactile diaphragm pressure sensor based on embedded Galinstan microchannels (70 µm width × 70 µm height) capable of resolving sub‐50 Pa changes in pressure with sub‐100 Pa…

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