Fig. 5. Finite element simulation of AAD-enabled wound contraction.

(A) Configuration of the finite element model where AAD of thickness T, width L, and shear modulus G is attached onto a wounded skin of initial wound size W (top). After contraction, the wound size is reduced to w (bottom). The color contours map the magnitude of horizontal displacement. (B) Simulated rodent skin strain as a function of the distance from the wound edge. (C) The wound contraction, calculated by 1 − (w/W)², is predicted to vary with the shear modulus G of AAD. (D) Modeling of contraction of human and rodent skin as a function of the length of AAD to width of the wound ratio (L/W).