Real-Time Personal Fever Alert Monitoring by Wearable Detector Based on Thermoresponsive Hydrogel

Quick fever screening at a mass scale is proven effective during pandemic to single out the ones with suspected symptoms of infectious diseases. However, achieving affordable and real-time alert an individual level, although more preferable, remains elusive. Herein, we report inexpensive highly sensitive detector, which possesses sharp color transition temperature window tailor-tuned for screening. The sensing component detector rationally designed thermoresponsive agarose@poly(N-isopropylacrylamide)-co-acrylamide hydrogel. hydrogel turns from transparent opaque white when its higher than cloud point. As proof concept practical applicability, wearable monitoring device was fabricated in form wristband. When wrist threshold human fever, shows remarkable change, alerting elevated body temperature. provides promising strategy capable making contributions inhibit spread diseases pandemic.