Figure 2. Brain interfacing functionalities of SMCA soft patches (IMAGE)
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A. Comparison of the tissue-adhesive strength between Alg and Alg–CA according to stretching direction. Both hydrogel materials were coupled with the SHP substrate. B. Plot of relative storage modulus of thermoset PDMS (red) and thermoplastic SHP (blue) films as a function of temperature. (Inset) showing the magnified view of the plot ranging from room temperature (25℃) to body temperature (37℃). C. Strain‒stress curves of PDMS (red) and SHP (blue) films. D. Comparative photoimages illustrating tissue-adhesion performances of Alg/SHP (top), Alg–CA/PDMS (middle), SMCA (bottom) films on bovine brain while shear strain was applied. E. Comparative sequential images of Alg–CA/PDMS (top) and SMCA (bottom) mounted on bovine brain tissue with curved surface morphology illustrating behaviour of soft films over time. The surface temperature of the brain tissue was set at 37 °C.
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