Large-Area Knittable, Wash-Durable, and Healable Smart Fibers for Dual-Modal Sensing Applications
writer：Bo Zhou, Man Yuan, Hao Lu, Xiaoyan Qiu, Jize Liu, Zhong Zhao, Xinxing Zhang,* and Guangming Cai*
keywords：dual-modal sensing, luminescence, patterned conductive network, self- healing, smart ?bers
source：期刊
Issue time：2024年
Fiber-based multimodal sensors with electrical/optical signals are highly
desired for next-generation wearable electronics. Despite the remarkable
progress in this area, achieving large-scale knittable, washable, and
self-healing performance in ?ber-based multimodal sensors simultaneously
remains a great challenge. Here, a smart ?ber capable of exhibiting
piezoresistive/luminescent properties based on an H-bonding connected
multilayered core–shell nanostructure is developed. The core principle of this
design involves constructing strong interfacial interactions between the ?ber
layers, which results in a sensor with high sensitivity (gauge
factor = 12383500), exceptional water resistance, and robust self-healing
properties (tensile strength 30.9 MPa, healing e?ciency 72.9%). Unlike
traditional ?ber-based sensors where elaborate nanostructures are prone to
shedding during knitting, this strategy enables the ?ber sensors with excellent
knittability to be patterned in the fabric, improving both optical and electrical
sensitivities. This work is anticipated to make a signi?cant contribution to the
further development of wearable electronic products and visual
human–computer interaction electronic devices.