Surface remeshing and tetrahedral mesh generation for the jSR structure. (a) The original surface mesh, consisting of 9, 695 vertices and 18, 817 triangles, is reconstructed from the electron microscopic images of jSR. (b) The regenerated mesh, with 37, 527 vertices and 75, 046 triangles, has much smoother surface and higher quality. (c) The comparison between the two angle histograms of the meshes in (a) and (b). The red vertical bars in both histograms indicate the minimal and maximal angles. (d) The tetrahedral mesh, generated from the mesh in (b), has 45, 597 vertices and 184, 936 tetrahedra. The minimal and maximal angles on the domain surface are 10.9° and 129.9°, respectively. The minimal and maximal dihedral angles of the entire tetrahedral mesh are 7.0° and 161.0°, respectively.