Fig. 3: The sensing and mechanical properties of the Ag@PDA-(CSPBA/CSGA) hydrogels. | npj Flexible Electronics

Fig. 3: The sensing and mechanical properties of the Ag@PDA-(CSPBA/CSGA) hydrogels.

From: Ag@polydopamine-functionalized borate ester-linked chitosan hydrogel integrates monitoring with wound healing for epidermal sensor

Fig. 3

a Conductivity and (b) sensitivity of the Ag@PDA-(CSPBA/CSGA) hydrogels with different concentrations of Ag@PDA nanoparticles. c The response and recovery time of the Ag@PDA-(CSPBA/CSGA) hydrogel sensor. d The relative resistance (ΔR/R0 signal) of the hydrogel sensor at different stretching speeds. e The sequential step-stretching response of the hydrogel sensor (step size: 20% strain, holding time: 20 s). f The cyclic response of the sensor for 100 stretching/release cycles at 50% strain. g, h Rheological properties of the Ag@PDA-(CSPBA/CSGA) hydrogel containing 0.45 mg/mL of Ag@PDA nanoparticles. g The frequency-dependent profile of the storage modulus (G’) and loss modulus (G”). h Strain amplitude sweep analysis. i The lap-shear adhesive strength of the Ag@PDA-(CSPBA/CSGA) hydrogel with pork skin.

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