Figure 7
(a) The bean structure represented in is generated by three Voronoi cells located at w1 = (0,0,0,0,0), w2 = and w3 = ; there are thus three most plausible translation boundaries R1 = w2-w1, R2 = w3-w1 and R3 = w3-w2. (b) The honeycomb structure represented in is generated by two Voronoi cells located at w1 = (0,0,0,0,0) and . Its most plausible translational defect is thus the boundary characterized by that leaves one translational orbit invariant (see Fig. 8). |