Dual-Layer Flexible Capacitance Sensor with Wide Range and High Sensitivity
Flexible pressure sensors have attracted great attention due to their extensive applications in human–computer interaction and health monitoring. So far, the development of flexible pressure sensors that balance high sensitivity and a wide measurement range remains a challenge. Herein, a double-laye...
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| Format: | Article |
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MDPI AG
2025-05-01
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| Series: | Actuators |
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| Online Access: | https://www.mdpi.com/2076-0825/14/5/251 |
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| author | Benyuan Fu Zipei Wang Kun Chen Zebing Mao Hao Wang Benxiang Ju Yanhong Peng |
| author_facet | Benyuan Fu Zipei Wang Kun Chen Zebing Mao Hao Wang Benxiang Ju Yanhong Peng |
| author_sort | Benyuan Fu |
| collection | DOAJ |
| description | Flexible pressure sensors have attracted great attention due to their extensive applications in human–computer interaction and health monitoring. So far, the development of flexible pressure sensors that balance high sensitivity and a wide measurement range remains a challenge. Herein, a double-layer dielectric structure with a surface convex structure is reported for the preparation of flexible capacitive pressure sensors. The double-layer dielectric structure, which is composed of a silicone rubber-based conductive elastomer with a surface micro-convex structure and a PVA-H-based conductive elastomer, balances the advantages and disadvantages of the two conductive elastomer dielectrics. It can form a complete micro-capacitive network under relatively large pressures, enabling the sensor to have high sensitivity at different stages (1.7 kPa<sup>−1</sup>, 0–104 kPa; 19.14 kPa<sup>−1</sup>, 104–140 kPa), thus achieving a dual enhancement of sensitivity and sensing range. Additionally, the sensor has been successfully applied to scenarios such as monitoring of human breathing, speaking, and movement, as well as mouse clicks, demonstrating its great potential in the fields of health monitoring and human–computer interaction applications. |
| format | Article |
| id | doaj-art-385cf9dc06f24e8eb73e38fcab398b69 |
| institution | OA Journals |
| issn | 2076-0825 |
| language | English |
| publishDate | 2025-05-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Actuators |
| spelling | doaj-art-385cf9dc06f24e8eb73e38fcab398b692025-08-20T02:33:43ZengMDPI AGActuators2076-08252025-05-0114525110.3390/act14050251Dual-Layer Flexible Capacitance Sensor with Wide Range and High SensitivityBenyuan Fu0Zipei Wang1Kun Chen2Zebing Mao3Hao Wang4Benxiang Ju5Yanhong Peng6College of Mechanical Engineering, Chongqing University of Technology, Chongqing 400054, ChinaCollege of Mechanical Engineering, Chongqing University of Technology, Chongqing 400054, ChinaCollege of Mechanical Engineering, Chongqing University of Technology, Chongqing 400054, ChinaDepartment of Engineering Science and Mechanics, Shibaura Institute of Technology, 3-7-5 Toyosu, Koto-ku, Tokyo 135-8548, JapanCollege of Mechanical Engineering, Chongqing University of Technology, Chongqing 400054, ChinaCollege of Mechanical Engineering, Chongqing University of Technology, Chongqing 400054, ChinaCollege of Mechanical Engineering, Chongqing University of Technology, Chongqing 400054, ChinaFlexible pressure sensors have attracted great attention due to their extensive applications in human–computer interaction and health monitoring. So far, the development of flexible pressure sensors that balance high sensitivity and a wide measurement range remains a challenge. Herein, a double-layer dielectric structure with a surface convex structure is reported for the preparation of flexible capacitive pressure sensors. The double-layer dielectric structure, which is composed of a silicone rubber-based conductive elastomer with a surface micro-convex structure and a PVA-H-based conductive elastomer, balances the advantages and disadvantages of the two conductive elastomer dielectrics. It can form a complete micro-capacitive network under relatively large pressures, enabling the sensor to have high sensitivity at different stages (1.7 kPa<sup>−1</sup>, 0–104 kPa; 19.14 kPa<sup>−1</sup>, 104–140 kPa), thus achieving a dual enhancement of sensitivity and sensing range. Additionally, the sensor has been successfully applied to scenarios such as monitoring of human breathing, speaking, and movement, as well as mouse clicks, demonstrating its great potential in the fields of health monitoring and human–computer interaction applications.https://www.mdpi.com/2076-0825/14/5/251capacitive pressure sensorconductive polymer compositeshigh performance |
| spellingShingle | Benyuan Fu Zipei Wang Kun Chen Zebing Mao Hao Wang Benxiang Ju Yanhong Peng Dual-Layer Flexible Capacitance Sensor with Wide Range and High Sensitivity Actuators capacitive pressure sensor conductive polymer composites high performance |
| title | Dual-Layer Flexible Capacitance Sensor with Wide Range and High Sensitivity |
| title_full | Dual-Layer Flexible Capacitance Sensor with Wide Range and High Sensitivity |
| title_fullStr | Dual-Layer Flexible Capacitance Sensor with Wide Range and High Sensitivity |
| title_full_unstemmed | Dual-Layer Flexible Capacitance Sensor with Wide Range and High Sensitivity |
| title_short | Dual-Layer Flexible Capacitance Sensor with Wide Range and High Sensitivity |
| title_sort | dual layer flexible capacitance sensor with wide range and high sensitivity |
| topic | capacitive pressure sensor conductive polymer composites high performance |
| url | https://www.mdpi.com/2076-0825/14/5/251 |
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