Intelligent response hydrogels have significant application prospects due to their ability to sense and respond to environmental changes.However,many smart hydrogels are limited by weak mechanical properties and poor electrical conductivity.In this experiment,a temperature-responsive Ag-P(NIPAM-co-AAm)-NaCl hydrogel was synthesized using N-isopropylacrylamide(NIPAM)and acrylamide(AAm)as monomers,with nano-silver sheets as conductive fillers.This hydrogel demonstrates an ultimate strain exceeding 700%,high electrical conductivity,and tunable low adhesion properties,effectively mitigating noise caused by motion artifacts during normal physiological activities.By adjusting the ratio of N-isopropylacrylamide(NIPAM)and acrylamide(AAM),the hydrogel's lower critical solution temperature(LCST)can be precisely controlled.Experimental results show that electrodes assembled with this hydrogel achieved a low contact impedance of 20 kΩ at 100 Hz,and the signal-to-noise ratio of the recorded electrocardiogram signals exceeded 28 dB,maintaining functionality for up to 24 hours.This high-performance hydrogel electrode offers greater potential for the next generation of intelligent physiological signal monitoring and application scenarios.
维普
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