In-situ forming ultra-mechanically sensitive materials for high-sensitivity stretchable fiber strain sensors

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外文摘要：Fiber electronics with flexible and weavable features can be easily integrated into textiles for wearable applications.However,due to small sizes and curved surfaces of fiber materials,it remains challenging to load robust active layers,thus hindering production of high-sensitivity fiber strain sensors.Herein,functional sensing materials are firmly anchored on the fiber surface in-situ through a hydrolytic condensation process.The anchoring sensing layer with robust interfacial adhesion is ultra-mechanically sensitive,which significantly improves the sensitivity of strain sensors due to the easy generation of microcracks during stretching.The resulting stretchable fiber sensors simultaneously possess an ultra-low strain detection limit of 0.05％,a high stretchability of 100％,and a high gauge factor of433.6,giving 254-folds enhancement in sensitivity.Additionally,these fiber sensors are soft and lightweight,enabling them to be attached onto skin or woven into clothes for recording physiological signals,e.g.pulse wave velocity has been effectively obtained by them.As a demonstration,a fiber sensor-based wearable smart healthcare system is designed to monitor and transmit health status for timely intervention.This work presents an effective strategy for developing high-performance fiber strain sensors as well as other stretchable electronic devices.

外文关键词：

fiberstrain sensorstretchablewearablehealthcare

作者：

Rouhui Yu、Changxian Wang、Xiangheng Du、Xiaowen Bai、Yongzhong Tong、Huifang Chen、Xuemei Sun、Jing Yang、Naoji Matsuhisa、Huisheng Peng、Meifang Zhu、Shaowu Pan

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作者单位：

State Key Laboratory for Modification of Chemical Fibers and Polymer Materials,College of Materials Science and Engineering,Donghua University,Shanghai 201620,China

MOE Key Lab of Disaster Forecast and Control in Engineering,School of Mechanics and Construction Engineering,Jinan University,Guangzhou 510632,China

State Key Laboratory of Molecular Engineering of Polymers,Department of Macromolecular Science,and Institute of Fiber Materialsand Devices,Fudan University,Shanghai 200438,China

Department of Cardiology,Shanghai Xuhui Central Hospital,Zhongshan-Xuhui Hospital,Fudan University,Shanghai 200031,China

Research Center for Advanced Science and Technology,and Institute of Industrial Science,The University of Tokyo,Tokyo 153-8505,Japan

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基金：

National Natural Science Foundation of ChinaNational Natural Science Foundation of ChinaNational Natural Science Foundation of ChinaState Key Laboratory for Modification of Chemical Fibers and Polymer Materials(Donghua University)

项目编号：

523732015210325252090033

出版年：

2024

DOI：

10.1093/nsr/nwae158

国家科学评论(英文版)

CSTPCD

ISSN：

年,卷(期)：2024.11(6)