Independent dual-responsive Janus chromic fibers

Daily exposure under solar ultraviolet (UV) and infrared (IR) is prone to cause skin cancer photoaging. Real-time monitoring of the environmental UV index IR radiation temperature during outdoor activities can enhance awareness strengthen personal protection. It a challenge design flexible, wearable devices (with measurement capabilities) that be integrated with apparels. Here, microfluidic spinning technology (MST) was used for continuous large-scale fabrication eco-friendly coresheath Janus fibers well-defined axially symmetric core. One side core sensitive light opposite radiation. Textiles woven showed excellent independent reversible color responses dual-wavelength stimulation. Such textiles switched among four colors irradiation, both individually in combination. The gradient changed significantly increasing intensity (UV index). After 60 cycles UV/IR stimulation 50 washes, change rate comprehensive chromatic aberration (ΔE*ab) different conditions only 0.42%–4.71%. This attributed unique structure fibers. three-line striped demonstrated potential as energy-free real-time visual monitors temperature.