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Three-dimensional micro strain gauges as flexible, modular tactile sensors for versatile integration with micro- and

Chen Xu1,2, Yiran Wang1, Jingyan Zhang1

  • 1National Key Laboratory of Science and Technology on Micro/Nano Fabrication, Department of Biomedical Engineering, College of Future Technology, Peking University, Beijing 100871, China.

Science Advances
|August 21, 2024
PubMed
Summary

Flexible tactile sensors offer new ways to integrate with electronics. These modular sensors accurately measure touch, temperature, and force, enabling advanced human-machine interfaces and biomedical applications.

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Strain quantifies the deformation of a material under force, typically measured as normal strain, which represents the change in length when compared with the original length. Electrical strain gauges are used for enhanced accuracy. These devices consist of a conductive wire mounted on a paper backing that adheres to the material's surface. These gauges operate on the piezoresistive effect, where the wire's electrical resistance changes in response to mechanical deformation. The strain...
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