Flexible Piezoresistive Sensor with High Strain Sensitivity and Pressure Insensitivity for Motion Monitoring

Flexible strain sensors have attracted particular attention in monitoring biological activity of organisms. This paper presents a flexible piezoresistive strain sensor (FPSS) that uses nano-micro materials and a sensitive unit with microspheric structure. The stretchable strain sensor exploits carbo...

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Bibliographic Details
Published inIEEE journal on flexible electronics Vol. 3; no. 1; p. 1
Main Authors Du, Yi, Sun, Lin, Yang, Lu, Jiang, Chengpeng, Xu, Wentao
Format Journal Article
LanguageEnglish
Published IEEE 01.01.2024
Subjects
Bending
Face recognition
Flexible strain sensor
high sensitivity
motion monitoring
Nanoscale devices
Nanostructured materials
piezoresistive sensor
pressure insensitivity
Robot sensing systems
Sensors
Substrates
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ISSN2768-167X
2768-167X
DOI10.1109/JFLEX.2023.3332567

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Summary:Flexible strain sensors have attracted particular attention in monitoring biological activity of organisms. This paper presents a flexible piezoresistive strain sensor (FPSS) that uses nano-micro materials and a sensitive unit with microspheric structure. The stretchable strain sensor exploits carbon nanotubes (CNT), and achieves stable strain sensing performance with excellent Qhmic characteristics and good durability, possesses a high sensitivity (gauge factor ≈ 146) under tensile strain, and it is insensitive to pressure. While attached to human skin areas, it can distinguish facial expressions, deep breathing, and finger motions. These results imply this strain sensor may have applications in e-skins.
ISSN:2768-167X
2768-167X
DOI:10.1109/JFLEX.2023.3332567