Wearable and Stretchable Strain Sensors: Materials, Sensing Mechanisms, and Applications

Hamid Souri, Hritwick Banerjee, Ardian Jusufi, Norbert Radacsi, Adam A. Stokes, Inkyu Park, Metin Sitti, Morteza Amjadi

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Abstract

Recent advances in the design and implementation of wearable resistive, capacitive, and optical strain sensors are summarized herein. Wearable and stretchable strain sensors have received extensive research interest due to their applications in personalized healthcare, human motion detection, human–machine interfaces, soft robotics, and beyond. The disconnection of overlapped nanomaterials, reversible opening/closing of microcracks in sensing films, and alteration of the tunneling resistance have been successfully adopted to develop high-performance resistive-type sensors. On the other hand, the sensing behavior of capacitive-type and optical strain sensors is largely governed by their geometrical changes under stretching/releasing cycles. The sensor design parameters, including stretchability, sensitivity, linearity, hysteresis, and dynamic durability, are comprehensively discussed. Finally, the promising applications of wearable strain sensors are highlighted in detail. Although considerable progress has been made so far, wearable strain sensors are still in their prototype stage, and several challenges in the manufacturing of integrated and multifunctional strain sensors should be yet tackled.
Original languageEnglish
Article number2000039
JournalAdvanced Intelligent Systems
Volume2
Issue number8
Early online date11 Jun 2020
DOIs
Publication statusPublished - Aug 2020

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