FIG. 4.

(a) V_ap versus time, (b) V_in versus time for durations of 5, 3, 2, and 0.8 s, and (c) an example of $0.5{\left(\pi /A\right)}^{\raisebox{1ex}{$1$}\!\left/ \!\raisebox{-1ex}{$2$}\right.}\left(1-{\nu }^2\right)K(V_{\mathit{in},0}-V_{\mathit{in}})$ versus V_in, where the slope of the linear fitting was 8.4 kPa which was taken as the elastic modulus of the model gelatin.