Figure 2: Four kinds of shield-like tiles (SLTs).
From: Multiple quasicrystal approximants with the same lattice parameters in Al-Cr-Fe-Si alloys
The first row: HAADF-STEM images at an atomic resolution. The second row: the outlines of four SLTs depicted by the thick white lines. The third row: schematic diagram of four SLTs. Note that the symmetric element of the mirror is indicated by m.
