Bottom-up reconstruction of smart textiles with hierarchical structures to assemble versatile wearable devices for multiple signals monitoring
writer：Zhaofeng Ouyang,Shenghong Li,Jianting Liu,Hou-Yong Yu,Laihu Peng,Shuang Zheng,Dewen Xu,Kam Chiu Tam
keywords：silk yarn，sinterfacial etching，smart textiles，integrated wearable devices，multiple signals monitoring
source：期刊
specific source：doi.org/10.1016/j.nanoen.2022.107963
Issue time：2022年
Wearable smart textiles based on natural biocompatible materials have attracted considerable interests due to the promising use for healthcare management, human-machine interactions, and remote monitoring. However, assembling conductive yarns into smart textiles and wearable sensing devices based on silks is hardly investigated. Herein, a bottom-up and scalable strategy of constructing smart fabric from conductive yarns units is presented. Specifically, silk yarns are functionalized by customized conductive paints consisted of polyaniline (PANI) and carbon nanotubes (CNT), which selectively etches the interface of yarns without damage of their internal structures. The as-prepared sensing units not only maintain the characters of silk, PANI and CNT, with robust mechanical performances and high conductivity, but also can efficiently monitor a series of critical signals, such as strain, temperature and harmful gas. The sensing units can be sewed into fabric to integrate flexible smart textiles, and the obtained smart textiles preserve the structural integrity and detection capacity under deformations, frictions and water exposure. An integrated textile device is also shown, which consists of display and warning can serve as a health butler, demonstrating the system’s potential within the “internet of things” in various areas, including motion monitoring and smart home.