Bottom-up reconstruction of smart textiles with hierarchical structures to assemble versatile wearable devices for multiple signals monitoring. (15th December 2022)

• Record Type: Journal Article
• Authors: Ouyang, Zhaofeng; Li, Shenghong; Liu, Jianting; Yu, Hou-Yong; Peng, Laihu; Zheng, Shuang; Xu, Dewen; Tam, Kam Chiu
• Is Part Of: Nano energy. Volume 104(2022)Part A
• Publication Date: 2022-12-15
• Subjects: Silk yarns -- Interfacial etching -- Smart textiles -- Integrated wearable devices -- Multiple signals monitoring; Nanoscience -- Periodicals; Nanotechnology -- Periodicals; Nanostructured materials -- Periodicals; Power resources -- Technological innovations -- Periodicals; Nanoscience; Nanostructured materials; Nanotechnology; Power resources -- Technological innovations; Periodicals; 621.042
• DOI: 10.1016/j.nanoen.2022.107963
• Languages: English
• ISSNs: 2211-2855

Abstract

Abstract: 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. Graphical Abstract: ga1 Highlights: ● Flexible and washable wearable electronics consisted of SPC20 for multifunctional signals capture is fabricated successfully. ● Robust SPC20 with high conductivity possesses excellent air permeability (4.63 kg m −2 d −1 ). ● Assembled wearable devices can monitor walking speed, push-ups, and sitting posture in real time. ● All-in-one smart clothing had fantastic sensitivity for real-time monitoring of body temperature (TCR=4.05%/°C). ● A portable device for toxic gases monitoring (formaldehyde, toluene, ethanol, and ammonia) had broad prospect in smart home.