Microstructured Liquid Metal‐Based Embedded‐Type Sensor Array for Curved Pressure Mapping
Abstract Human hands can envelop the surface of an object and recognize its shape through touch. However, existing stretchable haptic sensors exhibit limited flexibility and stability to detect pressure during deformation, while also solely achieving recognition of planar objects. Inspired by the st...
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| Format: | Article |
| Language: | English |
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Wiley
2025-01-01
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| Series: | Advanced Science |
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| Online Access: | https://doi.org/10.1002/advs.202413233 |
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| author | Haoyu Li Chengjun Zhang Hongyu Xu Qing Yang Zexiang Luo Cheng Li Lin Kai Yizhao Meng Jialiang Zhang Jie Liang Feng Chen |
| author_facet | Haoyu Li Chengjun Zhang Hongyu Xu Qing Yang Zexiang Luo Cheng Li Lin Kai Yizhao Meng Jialiang Zhang Jie Liang Feng Chen |
| author_sort | Haoyu Li |
| collection | DOAJ |
| description | Abstract Human hands can envelop the surface of an object and recognize its shape through touch. However, existing stretchable haptic sensors exhibit limited flexibility and stability to detect pressure during deformation, while also solely achieving recognition of planar objects. Inspired by the structure of skin tissue, an embedded construction‐enabled liquid metal‐based e‐skin composed of a liquid metal microstructured electrode (LM‐ME) array is fabricated for curved pressure mapping. The embedded LM‐ME‐based sensor elements are fabricated by using femtosecond laser‐induced micro/nanostructures and water/hydrogel assisted patterning method, which enables high sensitivity (7.42 kPa−1 in the range of 0–0.1 kPa) and high stability through an interlinked support isolation structure for the sensor units. The sensor array with a high interfacial toughness of 1328 J m−2 can maintain pressure sensation under bending and stretching conditions. Additionally, the embedded construction and laser‐induced bumps effectively reduce crosstalk from 58 to 7.8% compared to conventional flexible sensors with shared surfaces. The stretchable and mechanically stable sensor arrays possess shape‐adaptability that enables pressure mapping on non‐flat surfaces, which has great potential for object recognition in robotic skins and human‐computer interaction. |
| format | Article |
| id | doaj-art-3d03979890a143568e915c6b721e507f |
| institution | Kabale University |
| issn | 2198-3844 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Advanced Science |
| spelling | doaj-art-3d03979890a143568e915c6b721e507f2025-01-20T13:04:18ZengWileyAdvanced Science2198-38442025-01-01123n/an/a10.1002/advs.202413233Microstructured Liquid Metal‐Based Embedded‐Type Sensor Array for Curved Pressure MappingHaoyu Li0Chengjun Zhang1Hongyu Xu2Qing Yang3Zexiang Luo4Cheng Li5Lin Kai6Yizhao Meng7Jialiang Zhang8Jie Liang9Feng Chen10State Key Laboratory for Manufacturing System Engineering and Shaanxi Key Laboratory of Photonics Technology for Information School of Electronic Science and Engineering Xi'an Jiaotong University Xi'an 710049 P. R. ChinaSchool of Instrument Science and Technology Xi'an Jiaotong University Xi'an 710049 P. R. ChinaState Key Laboratory for Manufacturing System Engineering and Shaanxi Key Laboratory of Photonics Technology for Information School of Electronic Science and Engineering Xi'an Jiaotong University Xi'an 710049 P. R. ChinaSchool of Instrument Science and Technology Xi'an Jiaotong University Xi'an 710049 P. R. ChinaState Key Laboratory for Manufacturing System Engineering and Shaanxi Key Laboratory of Photonics Technology for Information School of Electronic Science and Engineering Xi'an Jiaotong University Xi'an 710049 P. R. ChinaState Key Laboratory for Manufacturing System Engineering and Shaanxi Key Laboratory of Photonics Technology for Information School of Electronic Science and Engineering Xi'an Jiaotong University Xi'an 710049 P. R. ChinaState Key Laboratory for Manufacturing System Engineering and Shaanxi Key Laboratory of Photonics Technology for Information School of Electronic Science and Engineering Xi'an Jiaotong University Xi'an 710049 P. R. ChinaState Key Laboratory for Manufacturing System Engineering and Shaanxi Key Laboratory of Photonics Technology for Information School of Electronic Science and Engineering Xi'an Jiaotong University Xi'an 710049 P. R. ChinaState Key Laboratory for Manufacturing System Engineering and Shaanxi Key Laboratory of Photonics Technology for Information School of Electronic Science and Engineering Xi'an Jiaotong University Xi'an 710049 P. R. ChinaState Key Laboratory for Manufacturing System Engineering and Shaanxi Key Laboratory of Photonics Technology for Information School of Electronic Science and Engineering Xi'an Jiaotong University Xi'an 710049 P. R. ChinaState Key Laboratory for Manufacturing System Engineering and Shaanxi Key Laboratory of Photonics Technology for Information School of Electronic Science and Engineering Xi'an Jiaotong University Xi'an 710049 P. R. ChinaAbstract Human hands can envelop the surface of an object and recognize its shape through touch. However, existing stretchable haptic sensors exhibit limited flexibility and stability to detect pressure during deformation, while also solely achieving recognition of planar objects. Inspired by the structure of skin tissue, an embedded construction‐enabled liquid metal‐based e‐skin composed of a liquid metal microstructured electrode (LM‐ME) array is fabricated for curved pressure mapping. The embedded LM‐ME‐based sensor elements are fabricated by using femtosecond laser‐induced micro/nanostructures and water/hydrogel assisted patterning method, which enables high sensitivity (7.42 kPa−1 in the range of 0–0.1 kPa) and high stability through an interlinked support isolation structure for the sensor units. The sensor array with a high interfacial toughness of 1328 J m−2 can maintain pressure sensation under bending and stretching conditions. Additionally, the embedded construction and laser‐induced bumps effectively reduce crosstalk from 58 to 7.8% compared to conventional flexible sensors with shared surfaces. The stretchable and mechanically stable sensor arrays possess shape‐adaptability that enables pressure mapping on non‐flat surfaces, which has great potential for object recognition in robotic skins and human‐computer interaction.https://doi.org/10.1002/advs.202413233bio‐inspired structurefemtosecond laserliquid metalobjects recognitionpressure sensor array |
| spellingShingle | Haoyu Li Chengjun Zhang Hongyu Xu Qing Yang Zexiang Luo Cheng Li Lin Kai Yizhao Meng Jialiang Zhang Jie Liang Feng Chen Microstructured Liquid Metal‐Based Embedded‐Type Sensor Array for Curved Pressure Mapping Advanced Science bio‐inspired structure femtosecond laser liquid metal objects recognition pressure sensor array |
| title | Microstructured Liquid Metal‐Based Embedded‐Type Sensor Array for Curved Pressure Mapping |
| title_full | Microstructured Liquid Metal‐Based Embedded‐Type Sensor Array for Curved Pressure Mapping |
| title_fullStr | Microstructured Liquid Metal‐Based Embedded‐Type Sensor Array for Curved Pressure Mapping |
| title_full_unstemmed | Microstructured Liquid Metal‐Based Embedded‐Type Sensor Array for Curved Pressure Mapping |
| title_short | Microstructured Liquid Metal‐Based Embedded‐Type Sensor Array for Curved Pressure Mapping |
| title_sort | microstructured liquid metal based embedded type sensor array for curved pressure mapping |
| topic | bio‐inspired structure femtosecond laser liquid metal objects recognition pressure sensor array |
| url | https://doi.org/10.1002/advs.202413233 |
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