Piezo-Resistive Flexible Pressure Sensor by Blade-Coating Graphene–Silver Nanosheet–Polymer Nanocomposite
The demand for flexible pressure sensors in wearable devices is dramatically increasing. However, challenges still exist in making flexible pressure sensors, including complex or costly fabrication processes and difficulty in mass production. In this paper, a new method is proposed for preparing the...
| Main Authors: | , , , , , , |
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| Format: | Article |
| Language: | English |
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MDPI AG
2022-12-01
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| Series: | Nanomaterials |
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| Online Access: | https://www.mdpi.com/2079-4991/13/1/4 |
| _version_ | 1797431329911996416 |
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| author | Zheng Kang Xiangmeng Li Xiaodong Zhao Xiaoqiang Wang Jian Shen Huifen Wei Xijing Zhu |
| author_facet | Zheng Kang Xiangmeng Li Xiaodong Zhao Xiaoqiang Wang Jian Shen Huifen Wei Xijing Zhu |
| author_sort | Zheng Kang |
| collection | DOAJ |
| description | The demand for flexible pressure sensors in wearable devices is dramatically increasing. However, challenges still exist in making flexible pressure sensors, including complex or costly fabrication processes and difficulty in mass production. In this paper, a new method is proposed for preparing the flexible pressure sensors that combines an imprinting technique with blade-coating of a graphene–silver nanosheet–polymer nanocomposite. The piezo-resistive type flexible pressure sensor consists of interdigital electrodes and nanocomposite as a sensing layer, as well as a micropillar array structure. The morphology of the sensitive layer of the sensor is characterized by scanning electron microscopy (SEM). The response performance, sensitivity, and stability of the sensor are investigated. The test results show that the initial resistance of the pressure sensor is only 1.6 Ω, the sensitivity is 0.04 kPa<sup>−1</sup>, and the response time is about 286 ms. In addition, a highly hydrophobic wetting property can be observed on the functional structure surface of the sensor. The contact angle is 137.2 degrees, revealing the self-cleaning property of the sensor. Finally, the prepared sensor is demonstrated as a wearable device, indicating promising potential in practical applications. |
| first_indexed | 2024-03-09T09:43:19Z |
| format | Article |
| id | doaj.art-0d84f6f634284173a1e45053cea07563 |
| institution | Directory Open Access Journal |
| issn | 2079-4991 |
| language | English |
| last_indexed | 2024-03-09T09:43:19Z |
| publishDate | 2022-12-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Nanomaterials |
| spelling | doaj.art-0d84f6f634284173a1e45053cea075632023-12-02T00:43:35ZengMDPI AGNanomaterials2079-49912022-12-01131410.3390/nano13010004Piezo-Resistive Flexible Pressure Sensor by Blade-Coating Graphene–Silver Nanosheet–Polymer NanocompositeZheng Kang0Xiangmeng Li1Xiaodong Zhao2Xiaoqiang Wang3Jian Shen4Huifen Wei5Xijing Zhu6Shanxi Provincial Key Laboratory of Advanced Manufacturing Technology, North University of China, Taiyuan 030051, ChinaShanxi Provincial Key Laboratory of Advanced Manufacturing Technology, North University of China, Taiyuan 030051, ChinaShanxi Provincial Key Laboratory of Advanced Manufacturing Technology, North University of China, Taiyuan 030051, ChinaShanxi Provincial Key Laboratory of Advanced Manufacturing Technology, North University of China, Taiyuan 030051, ChinaShanxi Provincial Key Laboratory of Advanced Manufacturing Technology, North University of China, Taiyuan 030051, ChinaShanxi Provincial Key Laboratory of Advanced Manufacturing Technology, North University of China, Taiyuan 030051, ChinaShanxi Provincial Key Laboratory of Advanced Manufacturing Technology, North University of China, Taiyuan 030051, ChinaThe demand for flexible pressure sensors in wearable devices is dramatically increasing. However, challenges still exist in making flexible pressure sensors, including complex or costly fabrication processes and difficulty in mass production. In this paper, a new method is proposed for preparing the flexible pressure sensors that combines an imprinting technique with blade-coating of a graphene–silver nanosheet–polymer nanocomposite. The piezo-resistive type flexible pressure sensor consists of interdigital electrodes and nanocomposite as a sensing layer, as well as a micropillar array structure. The morphology of the sensitive layer of the sensor is characterized by scanning electron microscopy (SEM). The response performance, sensitivity, and stability of the sensor are investigated. The test results show that the initial resistance of the pressure sensor is only 1.6 Ω, the sensitivity is 0.04 kPa<sup>−1</sup>, and the response time is about 286 ms. In addition, a highly hydrophobic wetting property can be observed on the functional structure surface of the sensor. The contact angle is 137.2 degrees, revealing the self-cleaning property of the sensor. Finally, the prepared sensor is demonstrated as a wearable device, indicating promising potential in practical applications.https://www.mdpi.com/2079-4991/13/1/4piezo-resistive sensorflexible sensorimprintingblade coatinggraphenesilver nanosheet |
| spellingShingle | Zheng Kang Xiangmeng Li Xiaodong Zhao Xiaoqiang Wang Jian Shen Huifen Wei Xijing Zhu Piezo-Resistive Flexible Pressure Sensor by Blade-Coating Graphene–Silver Nanosheet–Polymer Nanocomposite Nanomaterials piezo-resistive sensor flexible sensor imprinting blade coating graphene silver nanosheet |
| title | Piezo-Resistive Flexible Pressure Sensor by Blade-Coating Graphene–Silver Nanosheet–Polymer Nanocomposite |
| title_full | Piezo-Resistive Flexible Pressure Sensor by Blade-Coating Graphene–Silver Nanosheet–Polymer Nanocomposite |
| title_fullStr | Piezo-Resistive Flexible Pressure Sensor by Blade-Coating Graphene–Silver Nanosheet–Polymer Nanocomposite |
| title_full_unstemmed | Piezo-Resistive Flexible Pressure Sensor by Blade-Coating Graphene–Silver Nanosheet–Polymer Nanocomposite |
| title_short | Piezo-Resistive Flexible Pressure Sensor by Blade-Coating Graphene–Silver Nanosheet–Polymer Nanocomposite |
| title_sort | piezo resistive flexible pressure sensor by blade coating graphene silver nanosheet polymer nanocomposite |
| topic | piezo-resistive sensor flexible sensor imprinting blade coating graphene silver nanosheet |
| url | https://www.mdpi.com/2079-4991/13/1/4 |
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