The GCCs with D=100 and ((A), (D), (G)) l=1; ((B), (E), (H)) l=10; ((C), (F), (I)) l=40 under the uniaxial compression along the x direction. GBs are composed of small (grey) and large (blue) particles. (A)–(C) Three rows of particles labeled in yellow serve as the initial reference line at ε=0. The three neighboring rows in each image makes the yellow line thick enough to be easily seen. The yellow line is along the [11] lattice direction for the right grain, but not for the left grain; thus, several small steps are in the initial straight yellow line. (D)–(F) Deforming (A)–(C) by ε=5.0%. Different GBs are deformed into different thicknesses l₁ and l₂. (G)–(I) The fields of particles displacement vectors at ε=5.0%, which correspond to (D)–(F), respectively. can also be seen from the colors.