Bacterial cellulose-liquid metal/polyacrylic acid hydrogels for freezing-tolerant strain sensing.
Developing conductive hydrogels with high stretchability, robust conductivity, anti-freezing performance, and reliable strain sensing across wide temperature ranges remains challenging. Herein, poly(acrylic acid)/gallium-bacterial cellulose/NaCl (PAA/Ga-BC/NaCl) conductive hydrogel sensors are fabricated via a facile t...