fig3

Figure 3. (A) The temperature changes in the single-layer structure during the ablation process by FEM; (B) The temperature changes in the inner side of the double-layer structure by FEM; (C) The temperature variations of T1 at the inner side of the first layer [red arrow in (A)]; (D) The temperature variations T2 at the inner side of the second layer [blue arrow in (B)]. Note that the temperature curve in (D) is also known as the back temperature curve. FEM: Finite element method.