title: Skin-mountable stretch sensor for wearable health monitoring.
abstract: This work presents a wrinkled Platinum (wPt) strain sensor with tunable strain sensitivity for applications in wearable health monitoring. These stretchable sensors show a dynamic range of up to 185% strain and gauge factor (GF) of 42. This is believed to be the highest reported GF of any metal thin film strain sensor over a physiologically relevant dynamic range to date. Importantly, sensitivity and dynamic range are tunable to the application by adjusting wPt film thickness. Performance is reliable over 1000 cycles with low hysteresis after sensor conditioning. The possibility of using such a sensor for real-time respiratory monitoring by measuring chest wall displacement and correlating with lung volume is demonstrated.
authors.affiliation: Materials & Manufacturing Technology, University of California Irvine, Irvine, CA, USA.
authors.forename: Jonathan D
authors.initials: JD
authors.lastname: Pegan
authors.affiliation: Biomedical Engineering, University of California Irvine, Irvine, CA, USA. mkhine@uci.edu.
authors.forename: Jasmine
authors.initials: J
authors.lastname: Zhang
authors.affiliation: Biomedical Engineering, University of California Irvine, Irvine, CA, USA. mkhine@uci.edu.
authors.forename: Michael
authors.initials: M
authors.lastname: Chu
authors.affiliation: Chemical Engineering & Materials Science, University of California Irvine, Irvine, CA, USA.
authors.forename: Thao
authors.initials: T
authors.lastname: Nguyen
authors.affiliation: Chemical Engineering & Materials Science, University of California Irvine, Irvine, CA, USA.
authors.forename: Sun-Jun
authors.initials: SJ
authors.lastname: Park
authors.affiliation: Biomedical Engineering, University of California Irvine, Irvine, CA, USA. mkhine@uci.edu.
authors.forename: Akshay
authors.initials: A
authors.lastname: Paul
authors.affiliation: Chemical Engineering & Materials Science, University of California Irvine, Irvine, CA, USA.
authors.forename: Joshua
authors.initials: J
authors.lastname: Kim
authors.affiliation: Electrical Engineering & Computer Science, University of California Irvine, Irvine, CA, USA.
authors.forename: Mark
authors.initials: M
authors.lastname: Bachman
authors.affiliation: Materials & Manufacturing Technology, University of California Irvine, Irvine, CA, USA and Biomedical Engineering, University of California Irvine, Irvine, CA, USA. mkhine@uci.edu and Chemical Engineering & Materials Science, University of California Irvine, Irvine, CA, USA.
authors.forename: Michelle
authors.initials: M
authors.lastname: Khine
mesh_terms: D004867:Equipment Design; D006801:Humans; D008991:Monitoring, Physiologic / Q000295:instrumentation*; D009068:Movement; D012119:Respiration; D000076251:Wearable Electronic Devices