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Volume 14
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10.3390/coatings14101269
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Article

Flexible Piezoelectric 0–3 PZT@C/PDMS Composite Films for Pressure Sensor and Limb Motion Monitoring

by
Chungang Li
1,
Chao Li
2,
Yingzi Wang
3,
Yaoting Zhao
1,
Fengzhen Yang
1,
Gensheng Dong
1,
Xiujuan Lin
1,
Shifeng Huang
1 and
Changhong Yang
1,*
1
Shandong Provincial Key Laboratory of Preparation and Measurement of Building Materials, University of Jinan, Jinan 250022, China
2
Shandong Institute for Product Quality Inspection, Jinan 250100, China
3
School of Materials Science and Engineering, University of Jinan, Jinan 250022, China
*
Author to whom correspondence should be addressed.
Coatings 2024, 14(10), 1269; https://doi.org/10.3390/coatings14101269
Submission received: 6 September 2024 / Revised: 26 September 2024 / Accepted: 29 September 2024 / Published: 3 October 2024
(This article belongs to the Special Issue Advances in Deposition and Surface Modification of Oxide Thin Films and Nanocoatings)
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Abstract

The flexible piezoelectric pressure sensor is essential in areas such as machine sensing and human activity monitoring. Here, 0-dimensional PZT piezoelectric ceramic nanoparticles with carbon coating were synthesized by a surface-modified technique. The excellent electrical conductivity of the carbon shell causes redistribution and accumulation of mobile charges in the carbon layer, resulting in a greatly increased piezoelectric effect by inducing an enhanced electric field. A series of organic–inorganic composite films were prepared by the spin-coating method using polydimethylsiloxane (PDMS) as the matrix. The as-fabricated flexible PZT@C/PDMS composite film with 40 wt% PZT@C powder exhibits an excellent output voltage of ~74 V, a peak of output current ~295 nA, as well as a big sensitivity of 5.26 V N−1. Moreover, the composite film can be used as a pressure sensor to detect changes in force as well as for monitoring limb movements such as finger flexion, wrist flexion, and pedaling. This study reveals the promising applications of flexible 40%PZT@C/PDMS composite film for limb motion monitoring and pressure sensing.
Keywords: flexible; piezoelectric; surface modification; composite material; sensor; monitoring flexible; piezoelectric; surface modification; composite material; sensor; monitoring

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MDPI and ACS Style

Li, C.; Li, C.; Wang, Y.; Zhao, Y.; Yang, F.; Dong, G.; Lin, X.; Huang, S.; Yang, C. Flexible Piezoelectric 0–3 PZT@C/PDMS Composite Films for Pressure Sensor and Limb Motion Monitoring. Coatings 2024, 14, 1269. https://doi.org/10.3390/coatings14101269

AMA Style

Li C, Li C, Wang Y, Zhao Y, Yang F, Dong G, Lin X, Huang S, Yang C. Flexible Piezoelectric 0–3 PZT@C/PDMS Composite Films for Pressure Sensor and Limb Motion Monitoring. Coatings. 2024; 14(10):1269. https://doi.org/10.3390/coatings14101269

Chicago/Turabian Style

Li, Chungang, Chao Li, Yingzi Wang, Yaoting Zhao, Fengzhen Yang, Gensheng Dong, Xiujuan Lin, Shifeng Huang, and Changhong Yang. 2024. "Flexible Piezoelectric 0–3 PZT@C/PDMS Composite Films for Pressure Sensor and Limb Motion Monitoring" Coatings 14, no. 10: 1269. https://doi.org/10.3390/coatings14101269

APA Style

Li, C., Li, C., Wang, Y., Zhao, Y., Yang, F., Dong, G., Lin, X., Huang, S., & Yang, C. (2024). Flexible Piezoelectric 0–3 PZT@C/PDMS Composite Films for Pressure Sensor and Limb Motion Monitoring. Coatings, 14(10), 1269. https://doi.org/10.3390/coatings14101269

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