Graphene-Based, Flexible, Wearable Piezoresistive Sensors with High Sensitivity for Tiny Pressure Detection
Flexible, wearable, piezoresistive sensors have significant potential for applications in wearable electronics and electronic skin fields due to their simple structure and durability. Highly sensitive, flexible, piezoresistive sensors with the ability to monitor laryngeal articulatory vibration supp...
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MDPI AG
2025-01-01
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| Series: | Sensors |
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| Online Access: | https://www.mdpi.com/1424-8220/25/2/423 |
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| author | Rui Li Jiahao Hu Yalong Li Yi Huang Lin Wang Mohan Huang Zhikun Wang Junlang Chen Yan Fan Liang Chen |
| author_facet | Rui Li Jiahao Hu Yalong Li Yi Huang Lin Wang Mohan Huang Zhikun Wang Junlang Chen Yan Fan Liang Chen |
| author_sort | Rui Li |
| collection | DOAJ |
| description | Flexible, wearable, piezoresistive sensors have significant potential for applications in wearable electronics and electronic skin fields due to their simple structure and durability. Highly sensitive, flexible, piezoresistive sensors with the ability to monitor laryngeal articulatory vibration supply a new, more comfortable and versatile way to aid communication for people with speech disorders. Here, we present a piezoresistive sensor with a novel microstructure that combines insulating and conductive properties. The microstructure has insulating polystyrene (PS) microspheres sandwiched between a graphene oxide (GO) film and a metallic nanocopper-graphene oxide (n-Cu/GO) film. The piezoresistive performance of the sensor can be modulated by controlling the size of the PS microspheres and doping degree of the copper nanoparticles. The sensor demonstrates a high sensitivity of 232.5 kPa<sup>−1</sup> in a low-pressure range of 0 to 0.2 kPa, with a fast response of 45 ms and a recovery time of 36 ms, while also exhibiting excellent stability. The piezoresistive performance converts subtle laryngeal articulatory vibration into a stable, regular electrical signal; in addition, there is excellent real-time monitoring capability of human joint movements. This work provides a new idea for the development of wearable electronic devices, healthcare, and other fields. |
| format | Article |
| id | doaj-art-3072a1c25be647e8afaa57fab2a170b1 |
| institution | Kabale University |
| issn | 1424-8220 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Sensors |
| spelling | doaj-art-3072a1c25be647e8afaa57fab2a170b12025-01-24T13:48:52ZengMDPI AGSensors1424-82202025-01-0125242310.3390/s25020423Graphene-Based, Flexible, Wearable Piezoresistive Sensors with High Sensitivity for Tiny Pressure DetectionRui Li0Jiahao Hu1Yalong Li2Yi Huang3Lin Wang4Mohan Huang5Zhikun Wang6Junlang Chen7Yan Fan8Liang Chen9College of Optical, Mechanical and Electrical Engineering, Zhejiang A&F University, Hangzhou 311300, ChinaSchool of Physical Science and Technology, Ningbo University, Ningbo 315211, ChinaSchool of Physical Science and Technology, Ningbo University, Ningbo 315211, ChinaCollege of Optical, Mechanical and Electrical Engineering, Zhejiang A&F University, Hangzhou 311300, ChinaCollege of Optical, Mechanical and Electrical Engineering, Zhejiang A&F University, Hangzhou 311300, ChinaCollege of Optical, Mechanical and Electrical Engineering, Zhejiang A&F University, Hangzhou 311300, ChinaCollege of Optical, Mechanical and Electrical Engineering, Zhejiang A&F University, Hangzhou 311300, ChinaCollege of Optical, Mechanical and Electrical Engineering, Zhejiang A&F University, Hangzhou 311300, ChinaCollege of Optical, Mechanical and Electrical Engineering, Zhejiang A&F University, Hangzhou 311300, ChinaSchool of Physical Science and Technology, Ningbo University, Ningbo 315211, ChinaFlexible, wearable, piezoresistive sensors have significant potential for applications in wearable electronics and electronic skin fields due to their simple structure and durability. Highly sensitive, flexible, piezoresistive sensors with the ability to monitor laryngeal articulatory vibration supply a new, more comfortable and versatile way to aid communication for people with speech disorders. Here, we present a piezoresistive sensor with a novel microstructure that combines insulating and conductive properties. The microstructure has insulating polystyrene (PS) microspheres sandwiched between a graphene oxide (GO) film and a metallic nanocopper-graphene oxide (n-Cu/GO) film. The piezoresistive performance of the sensor can be modulated by controlling the size of the PS microspheres and doping degree of the copper nanoparticles. The sensor demonstrates a high sensitivity of 232.5 kPa<sup>−1</sup> in a low-pressure range of 0 to 0.2 kPa, with a fast response of 45 ms and a recovery time of 36 ms, while also exhibiting excellent stability. The piezoresistive performance converts subtle laryngeal articulatory vibration into a stable, regular electrical signal; in addition, there is excellent real-time monitoring capability of human joint movements. This work provides a new idea for the development of wearable electronic devices, healthcare, and other fields.https://www.mdpi.com/1424-8220/25/2/423piezoresistive sensorsgraphene oxidetiny pressure detectionwearable devicecopper nanoparticles |
| spellingShingle | Rui Li Jiahao Hu Yalong Li Yi Huang Lin Wang Mohan Huang Zhikun Wang Junlang Chen Yan Fan Liang Chen Graphene-Based, Flexible, Wearable Piezoresistive Sensors with High Sensitivity for Tiny Pressure Detection Sensors piezoresistive sensors graphene oxide tiny pressure detection wearable device copper nanoparticles |
| title | Graphene-Based, Flexible, Wearable Piezoresistive Sensors with High Sensitivity for Tiny Pressure Detection |
| title_full | Graphene-Based, Flexible, Wearable Piezoresistive Sensors with High Sensitivity for Tiny Pressure Detection |
| title_fullStr | Graphene-Based, Flexible, Wearable Piezoresistive Sensors with High Sensitivity for Tiny Pressure Detection |
| title_full_unstemmed | Graphene-Based, Flexible, Wearable Piezoresistive Sensors with High Sensitivity for Tiny Pressure Detection |
| title_short | Graphene-Based, Flexible, Wearable Piezoresistive Sensors with High Sensitivity for Tiny Pressure Detection |
| title_sort | graphene based flexible wearable piezoresistive sensors with high sensitivity for tiny pressure detection |
| topic | piezoresistive sensors graphene oxide tiny pressure detection wearable device copper nanoparticles |
| url | https://www.mdpi.com/1424-8220/25/2/423 |
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