Abstract
This article develops a novel strain sensor with ultrahigh sensitivity and range that can be easily fabricated using a paper-based electrolyte and two metal pins bought from a local hardware store. No cleanroom facilities are needed. The sensor utilizes a new sensing principle consisting of a paper-based solid-state electrolyte, which deforms in response to strain and changes its contact area with a pair of electrodes. This results in a highly sensitive capacitance change in a double-layer supercapacitor. The new sensor is shown to have a monotonically increasing response for strains as large as 25%, while at the same time providing a high measurement resolution of 0.025% strain. The new sensor could enable a new generation of ubiquitous monitoring applications by replacing more expensive traditional strain sensors.
Original language | English (US) |
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Article number | 8613807 |
Journal | IEEE Sensors Letters |
Volume | 3 |
Issue number | 2 |
DOIs | |
State | Published - Feb 2019 |
Bibliographical note
Publisher Copyright:© 2019 IEEE.
Keywords
- Mechanical sensors
- solid electrolyte
- strain sensors
- supercapacitors