Flexible piezoresistive strain sensors are crucial for monitoring human motion, but achieving the right balance between sensitivity and operating range has always been challenging. Additionally, the complexity of muscle movements across different body parts means that relying on sensors with limited dimensional sensing is insufficient. This paper presents a flexible piezoresistive three-dimensional strain sensor (FPTDSS) designed to address these challenges. The FPTDSS features a wide operating range capable of detecting various human movements and boasts a high sensitivity, with a maximum gauge factor of 20 479. It can capture strain information along both the X- and Y-axes, as well as small vibrations along the Z-axis, through its intrinsic stretching and vibration properties. The sensor's effectiveness comes from the synergy between laser-induced graphene, silver nanoparticles (a zero-dimensional nanomaterial), and multi-walled carbon nanotubes (a one-dimensional nanomaterial). The synergistic effect of nanomaterials with different dimensions enables the FPTDSS to perform three-dimensional strain sensing, allowing for accurate detection of a broad range of complex human motions without requiring intricate circuit designs or preparation processes. This approach moves beyond limited strain information to provide a comprehensive view of three-dimensional strain, making the sensor versatile for detecting everything from subtle pulse vibrations to significant joint movements.
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13 January 2025
Research Article|
January 14 2025
A flexible piezoresistive three-dimensional strain sensor based on laser-induced graphene/nanosilver/MWCNTs for precise human all-range motion detection
Yijie Wang
;
Yijie Wang
(Conceptualization, Data curation, Formal analysis, Writing – original draft, Writing – review & editing)
1
Joint Laboratory for Extreme Conditions Matter Properties, School of Mathematics and Physics, Southwest University of Science and Technology
, Mianyang 621010, People's Republic of China
2
School of Manufacture Science and Engineering, Key Laboratory of Testing Technology for Manufacturing Process, Ministry of Education, Southwest University of Science and Technology
, Mianyang 621010, People's Republic of China
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Xiaohong Li
;
Xiaohong Li
a)
(Conceptualization, Funding acquisition, Investigation, Writing – review & editing)
1
Joint Laboratory for Extreme Conditions Matter Properties, School of Mathematics and Physics, Southwest University of Science and Technology
, Mianyang 621010, People's Republic of China
a)Authors to whom correspondence should be addressed: [email protected]; [email protected]; and [email protected]
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Xinyu Xu
;
Xinyu Xu
(Data curation, Investigation)
2
School of Manufacture Science and Engineering, Key Laboratory of Testing Technology for Manufacturing Process, Ministry of Education, Southwest University of Science and Technology
, Mianyang 621010, People's Republic of China
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Guoqiang Li
;
Guoqiang Li
a)
(Funding acquisition, Investigation, Writing – review & editing)
2
School of Manufacture Science and Engineering, Key Laboratory of Testing Technology for Manufacturing Process, Ministry of Education, Southwest University of Science and Technology
, Mianyang 621010, People's Republic of China
a)Authors to whom correspondence should be addressed: [email protected]; [email protected]; and [email protected]
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Sensen Xuan;
Sensen Xuan
(Investigation)
2
School of Manufacture Science and Engineering, Key Laboratory of Testing Technology for Manufacturing Process, Ministry of Education, Southwest University of Science and Technology
, Mianyang 621010, People's Republic of China
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Xiaoxin Li;
Xiaoxin Li
(Data curation)
2
School of Manufacture Science and Engineering, Key Laboratory of Testing Technology for Manufacturing Process, Ministry of Education, Southwest University of Science and Technology
, Mianyang 621010, People's Republic of China
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Kai Yin
Kai Yin
a)
(Funding acquisition, Writing – review & editing)
3
Hunan Key Laboratory of Nanophotonics and Devices, School of Physics, Central South University
, Changsha 410083, People's Republic of China
a)Authors to whom correspondence should be addressed: [email protected]; [email protected]; and [email protected]
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a)Authors to whom correspondence should be addressed: [email protected]; [email protected]; and [email protected]
Appl. Phys. Lett. 126, 023702 (2025)
Article history
Received:
July 01 2024
Accepted:
December 30 2024
Citation
Yijie Wang, Xiaohong Li, Xinyu Xu, Guoqiang Li, Sensen Xuan, Xiaoxin Li, Kai Yin; A flexible piezoresistive three-dimensional strain sensor based on laser-induced graphene/nanosilver/MWCNTs for precise human all-range motion detection. Appl. Phys. Lett. 13 January 2025; 126 (2): 023702. https://doi.org/10.1063/5.0226375
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