Wearable Microfluidic Diaphragm Pressure Sensor for Health and Tactile Touch Monitoring
Lawrence Berkeley National Laboratory · Tianjin University · +3 more institutions
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…
Citation impact
- FWCI
- 22.04
- Percentile
- 100%
- References
- 31
Authors
15- YGYuji Gao
Lawrence Berkeley National Laboratory, Tianjin University, University of California, Berkeley
- HOHiroki Ota
Lawrence Berkeley National Laboratory, University of California, Berkeley
- EWEthan W. Schaler
University of California, Berkeley
- KCKevin Chen
Lawrence Berkeley National Laboratory, University of California, Berkeley
- AZAllan Zhao
University of California, Berkeley
Topics & keywords
- Wheatstone bridge
- Polydimethylsiloxane
- Materials science
- Pressure sensor
- Microfluidics
- Tactile sensor
- Wearable computer
- Diaphragm (acoustics)