Skin‐Inspired Capacitive Flexible Tactile Sensor with an Asymmetric Structure for Detecting Directional Shear Forces
Abstract Flexible pressure sensors based on micro‐/nanostructures can be integrated into robots to achieve sensitive tactile perception. However, conventional symmetric structures, such as pyramids or hemispheres, can sense only the magnitude of a force and not its direction. In this study, a capaci...
| Main Authors: | , , , , , , , , , , , |
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| Format: | Article |
| Language: | English |
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Wiley
2024-02-01
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| Series: | Advanced Science |
| Subjects: | |
| Online Access: | https://doi.org/10.1002/advs.202305883 |
| _version_ | 1797319226101334016 |
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| author | Haibo Yu Hongji Guo Jingang Wang Tianming Zhao Wuhao Zou Peilin Zhou Zhuang Xu Yuzhao Zhang Jianchen Zheng Ya Zhong Xiaoduo Wang Lianqing Liu |
| author_facet | Haibo Yu Hongji Guo Jingang Wang Tianming Zhao Wuhao Zou Peilin Zhou Zhuang Xu Yuzhao Zhang Jianchen Zheng Ya Zhong Xiaoduo Wang Lianqing Liu |
| author_sort | Haibo Yu |
| collection | DOAJ |
| description | Abstract Flexible pressure sensors based on micro‐/nanostructures can be integrated into robots to achieve sensitive tactile perception. However, conventional symmetric structures, such as pyramids or hemispheres, can sense only the magnitude of a force and not its direction. In this study, a capacitive flexible tactile sensor inspired by skin structures and based on an asymmetric microhair structure array to perceive directional shear force is designed. Asymmetric microhair structures are obtained by two‐photon polymerization (TPP) and replication. Owing to the features of asymmetric microhair structures, different shear force directions result in different deformations. The designed device can determine the directions of both static and dynamic shear forces. Additionally, it exhibits large response scales ranging from 30 Pa to 300 kPa and maintains high stability even after 5000 cycles; the final relative capacitive change (ΔC/C0) is <2.5%. This flexible tactile sensor has the potential to improve the perception and manipulation ability of dexterous hands and enhance the intelligence of robots. |
| first_indexed | 2024-03-08T04:03:46Z |
| format | Article |
| id | doaj.art-8b2256983a864b8a870e6d9a82bbaf6d |
| institution | Directory Open Access Journal |
| issn | 2198-3844 |
| language | English |
| last_indexed | 2024-03-08T04:03:46Z |
| publishDate | 2024-02-01 |
| publisher | Wiley |
| record_format | Article |
| series | Advanced Science |
| spelling | doaj.art-8b2256983a864b8a870e6d9a82bbaf6d2024-02-09T08:26:35ZengWileyAdvanced Science2198-38442024-02-01116n/an/a10.1002/advs.202305883Skin‐Inspired Capacitive Flexible Tactile Sensor with an Asymmetric Structure for Detecting Directional Shear ForcesHaibo Yu0Hongji Guo1Jingang Wang2Tianming Zhao3Wuhao Zou4Peilin Zhou5Zhuang Xu6Yuzhao Zhang7Jianchen Zheng8Ya Zhong9Xiaoduo Wang10Lianqing Liu11State Key Laboratory of Robotics Shenyang Institute of Automation Chinese Academy of Sciences Shenyang 110016 ChinaState Key Laboratory of Robotics Shenyang Institute of Automation Chinese Academy of Sciences Shenyang 110016 ChinaState Key Laboratory of Robotics Shenyang Institute of Automation Chinese Academy of Sciences Shenyang 110016 ChinaState Key Laboratory of Robotics Shenyang Institute of Automation Chinese Academy of Sciences Shenyang 110016 ChinaState Key Laboratory of Robotics Shenyang Institute of Automation Chinese Academy of Sciences Shenyang 110016 ChinaCollege of Mechanical and Electrical Engineering Henan Agricultural University Zhengzhou 450002 ChinaState Key Laboratory of Robotics Shenyang Institute of Automation Chinese Academy of Sciences Shenyang 110016 ChinaState Key Laboratory of Robotics Shenyang Institute of Automation Chinese Academy of Sciences Shenyang 110016 ChinaState Key Laboratory of Robotics Shenyang Institute of Automation Chinese Academy of Sciences Shenyang 110016 ChinaState Key Laboratory of Robotics Shenyang Institute of Automation Chinese Academy of Sciences Shenyang 110016 ChinaState Key Laboratory of Robotics Shenyang Institute of Automation Chinese Academy of Sciences Shenyang 110016 ChinaState Key Laboratory of Robotics Shenyang Institute of Automation Chinese Academy of Sciences Shenyang 110016 ChinaAbstract Flexible pressure sensors based on micro‐/nanostructures can be integrated into robots to achieve sensitive tactile perception. However, conventional symmetric structures, such as pyramids or hemispheres, can sense only the magnitude of a force and not its direction. In this study, a capacitive flexible tactile sensor inspired by skin structures and based on an asymmetric microhair structure array to perceive directional shear force is designed. Asymmetric microhair structures are obtained by two‐photon polymerization (TPP) and replication. Owing to the features of asymmetric microhair structures, different shear force directions result in different deformations. The designed device can determine the directions of both static and dynamic shear forces. Additionally, it exhibits large response scales ranging from 30 Pa to 300 kPa and maintains high stability even after 5000 cycles; the final relative capacitive change (ΔC/C0) is <2.5%. This flexible tactile sensor has the potential to improve the perception and manipulation ability of dexterous hands and enhance the intelligence of robots.https://doi.org/10.1002/advs.202305883asymmetric microhair arraycapacitivedirectional shear forceflexible tactile sensortwo‐photon polymerization |
| spellingShingle | Haibo Yu Hongji Guo Jingang Wang Tianming Zhao Wuhao Zou Peilin Zhou Zhuang Xu Yuzhao Zhang Jianchen Zheng Ya Zhong Xiaoduo Wang Lianqing Liu Skin‐Inspired Capacitive Flexible Tactile Sensor with an Asymmetric Structure for Detecting Directional Shear Forces Advanced Science asymmetric microhair array capacitive directional shear force flexible tactile sensor two‐photon polymerization |
| title | Skin‐Inspired Capacitive Flexible Tactile Sensor with an Asymmetric Structure for Detecting Directional Shear Forces |
| title_full | Skin‐Inspired Capacitive Flexible Tactile Sensor with an Asymmetric Structure for Detecting Directional Shear Forces |
| title_fullStr | Skin‐Inspired Capacitive Flexible Tactile Sensor with an Asymmetric Structure for Detecting Directional Shear Forces |
| title_full_unstemmed | Skin‐Inspired Capacitive Flexible Tactile Sensor with an Asymmetric Structure for Detecting Directional Shear Forces |
| title_short | Skin‐Inspired Capacitive Flexible Tactile Sensor with an Asymmetric Structure for Detecting Directional Shear Forces |
| title_sort | skin inspired capacitive flexible tactile sensor with an asymmetric structure for detecting directional shear forces |
| topic | asymmetric microhair array capacitive directional shear force flexible tactile sensor two‐photon polymerization |
| url | https://doi.org/10.1002/advs.202305883 |
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