Enhanced sensing performance of superelastic thermally drawn liquid metal fibers through helical architecture while eliminating directional signal errors

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外文摘要：Due to their potential use in creating advanced electronic textiles for wearable technology,functional fibers have garnered enormous interests.The presence of stretchable smart fibers has significantly ex-panded the application scenarios of intelligent fibers.However,preparing fibers that possess both ex-cellent electrical performance and high stretchability remains a formidable challenge.The fabrication of stretchable multifunctional fiber-based sensors employing a scalable method is reported here.Using a thermal drawing process,the collaborative interplay between the hollow confined channels of superelas-tic poly(styrene-b-(ethylene-co-butylene)-b-styrene)(SEBS)thermally drawn fibers and the high fluidity of liquid metal(LM)ensures the exceptional electrical performance of the fibers.Simultaneously,the presence of a helical structure further enhances both the sensing and mechanical properties.The helical two LM channel fiber-based sensors are capable of displaying more than 1000％strain,high stability over 1000 cycles,a quick pressure response and release time of 30.45 and 45.35 ms,and outstanding electrical conductivity of 8.075 x 105 S/m.In addition,the electrical conductivity of this fiber increases with strain level,reaching 3 × 106 S/m when the strain is 500％.Furthermore,due to their superior tension and compression sensing capabilities,flexible helical sensors offer considerable potential for use in wearable electronics applications such as human motion detection,Morse code compilation,multichannel sensing,and more.

外文关键词：

Fiber-based sensorThermal drawingHelical structureLiquid metal

作者：

Yeke Zhang、Yu He、Liheng Niu、Xiaowei Xing、Yuzhi Jiang、Jian Fang、Yuqing Liu

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作者单位：

College of Textile and Clothing Engineering,Soochow University,Suzhou 215123,China

Shanghai Burns Institute,The Department of Burns and Plastic Surgery,Ruijin Hospital,Shanghai Jiaotong University School of Medicine,Shanghai 200025,China

基金：

National Natural Science Foundation of ChinaNational Key Research and Development Program of ChinaKey Research and Development Program of Jiangsu ProvinceChina National Textile and Apparel Council Science and Technology Guidance Project

项目编号：

521730592022YFB380580321KJA5400022020116

出版年：

2024

DOI：

10.1016/j.jmst.2024.02.028

材料科学技术(英文版)

中国金属学会中国材料研究学会中国科学院金属研究所

材料科学技术(英文版)

CSTPCD

影响因子：0.657

ISSN：1005-0302

年,卷(期)：2024.195(28)