Open AccessSkin-mountable stretch sensor for wearable health monitoring
Author(s) -
Jonathan Pegan,
Jie Zhang,
Michael Chu,
Thao Nguyen,
SunJun Park,
Akshay Paul,
Joshua Kim,
Mark Bachman,
Michelle Khine
Publication year - 2016
Publication title -
nanoscale
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.038
H-Index - 224
eISSN - 2040-3372
pISSN - 2040-3364
DOI - 10.1039/c6nr04467k
Subject(s) - gauge factor , materials science , wearable computer , strain gauge , hysteresis , sensitivity (control systems) , dynamic range , displacement (psychology) , optoelectronics , strain (injury) , acoustics , nanotechnology , electronic engineering , computer science , composite material , embedded system , fabrication , engineering , physics , medicine , psychology , alternative medicine , pathology , quantum mechanics , psychotherapist
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.