Liquid Metal Reversible Contacts for Flexible Tactile Sensor with High Sensitivity and Wide Detection Range

IF 6.1 Q1 AUTOMATION & CONTROL SYSTEMS
Shuai Dong, Gang Ma, Zhaowan Xiong, Du-An Ge, Yipu Guo, Weihua Li, Shiwu Zhang
{"title":"Liquid Metal Reversible Contacts for Flexible Tactile Sensor with High Sensitivity and Wide Detection Range","authors":"Shuai Dong,&nbsp;Gang Ma,&nbsp;Zhaowan Xiong,&nbsp;Du-An Ge,&nbsp;Yipu Guo,&nbsp;Weihua Li,&nbsp;Shiwu Zhang","doi":"10.1002/aisy.202401019","DOIUrl":null,"url":null,"abstract":"<p>Flexible tactile sensors inspired by human skin enable significant potential applications, including e-skin for intelligent robotics, wearable healthcare devices, and human–machine interfaces. Although the application of liquid metals (LM) and their composites has improved the stretchability of various tactile sensors, there remains a considerable gap between the performance of current flexible tactile sensors and human skin, attributed to their limited sensitivity and narrow working range. In this work, a liquid metal droplet (LMD)-based flexible tactile sensor that achieves both high-pressure sensitivity of 3 × 10<sup>−2</sup> kPa<sup>−1</sup> and a wide working range from 50 Pa to 1.2 MPa is proposed. The novel sensor consists of an LMD array in which each pair of droplets is connected by an electrolyte solution within the polydimethylsiloxane microchannel grid. It is demonstrated that the 2-LMD sensor is capable of detecting human motion and physiological signals, while the electrical impedance tomography-based 3.5 × 3.5 cm sensor can detect the shape and position of single-point, multipoint, and other complex contact using only eight evenly distributed electrodes along the sensor's edge. These findings highlight the promising potential of the sensors in future robotic and wearable electronic applications.</p>","PeriodicalId":93858,"journal":{"name":"Advanced intelligent systems (Weinheim an der Bergstrasse, Germany)","volume":"7 8","pages":""},"PeriodicalIF":6.1000,"publicationDate":"2025-03-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://advanced.onlinelibrary.wiley.com/doi/epdf/10.1002/aisy.202401019","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Advanced intelligent systems (Weinheim an der Bergstrasse, Germany)","FirstCategoryId":"1085","ListUrlMain":"https://advanced.onlinelibrary.wiley.com/doi/10.1002/aisy.202401019","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"AUTOMATION & CONTROL SYSTEMS","Score":null,"Total":0}
引用次数: 0

Abstract

Flexible tactile sensors inspired by human skin enable significant potential applications, including e-skin for intelligent robotics, wearable healthcare devices, and human–machine interfaces. Although the application of liquid metals (LM) and their composites has improved the stretchability of various tactile sensors, there remains a considerable gap between the performance of current flexible tactile sensors and human skin, attributed to their limited sensitivity and narrow working range. In this work, a liquid metal droplet (LMD)-based flexible tactile sensor that achieves both high-pressure sensitivity of 3 × 10−2 kPa−1 and a wide working range from 50 Pa to 1.2 MPa is proposed. The novel sensor consists of an LMD array in which each pair of droplets is connected by an electrolyte solution within the polydimethylsiloxane microchannel grid. It is demonstrated that the 2-LMD sensor is capable of detecting human motion and physiological signals, while the electrical impedance tomography-based 3.5 × 3.5 cm sensor can detect the shape and position of single-point, multipoint, and other complex contact using only eight evenly distributed electrodes along the sensor's edge. These findings highlight the promising potential of the sensors in future robotic and wearable electronic applications.

Abstract Image

Abstract Image

Abstract Image

Abstract Image

柔性触觉传感器用液态金属可逆触点,高灵敏度,宽检测范围
受人体皮肤启发的柔性触觉传感器实现了重要的潜在应用,包括智能机器人、可穿戴医疗设备和人机界面的电子皮肤。虽然液态金属及其复合材料的应用提高了各种触觉传感器的可拉伸性,但目前柔性触觉传感器的灵敏度有限,工作范围狭窄,与人体皮肤的性能仍有相当大的差距。在这项工作中,提出了一种基于液态金属液滴(LMD)的柔性触觉传感器,该传感器的高压灵敏度为3 × 10−2 kPa−1,工作范围为50 Pa至1.2 MPa。新型传感器由LMD阵列组成,其中每对液滴由聚二甲基硅氧烷微通道网格内的电解质溶液连接。结果表明,2-LMD传感器能够检测人体运动和生理信号,而基于电阻抗层析成像的3.5 × 3.5 cm传感器仅使用沿传感器边缘均匀分布的8个电极即可检测单点、多点和其他复杂接触的形状和位置。这些发现突出了传感器在未来机器人和可穿戴电子应用中的巨大潜力。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
求助全文
约1分钟内获得全文 求助全文
来源期刊
CiteScore
1.30
自引率
0.00%
发文量
0
审稿时长
4 weeks
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
提示
您的信息不完整,为了账户安全,请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
确定
请完成安全验证×
copy
已复制链接
快去分享给好友吧!
我知道了
右上角分享
点击右上角分享
0
联系我们:info@booksci.cn Book学术提供免费学术资源搜索服务,方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。 Copyright © 2023 布克学术 All rights reserved.
京ICP备2023020795号-1
ghs 京公网安备 11010802042870号
Book学术文献互助
Book学术文献互助群
群 号:604180095
Book学术官方微信