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. 2021 Nov 22;11:22668. doi: 10.1038/s41598-021-01036-5

Figure 3.

Figure 3

(a,b) Stress–strain curves obtained through uniform compression for soft PAA2 (a) and stiff PAA6 (b) hydrogels. The experimental results are better fitted by a Neo-Hookean constitutive behavior than by linear elasticity.