Extended Data Fig. 1: Deformation and stress calculated by the solid mechanics module in COMSOL Multiphysics.
From: Flexible solar cells based on foldable silicon wafers with blunted edges
a, 2D simulation of a textured c-Si wafer whose length and thickness were set as 1 cm and 60 μm, respectively. Three points near the middle of the upper surface were fixed to exclude rigid-body displacement. Vertical forces Fb = 1.2 mN were loaded at the endpoints of the wafer. The bright colour indicates that most of the von Mises stress was concentrated in the sharp channels between pyramids. b, The maximum von Mises stress was simulated as a function of the channel radius Rp, which was tuned by a blunting treatment in an acid solution.
