Figure 4

TEM images. Various kinds of borders in interfacial polygonal patterning-experimental conditions: AuNPs (2STU) + DDT (0.11 M) + PVP (1.25 mM), 180°C, 4 h. (a) Au/DDT = 1, DDT (22 mL); (b) Au/DDT = 1, DDT (4 mL); (c) Au/DDT = 1, DDT (2 mL), PVP (5 mM, 0.5 mL); (d) Au/DDT = 1, DDT (2 mL); (e) Au/DDT = 0.1, DDT (22 mL); (f) Au/DDT = 1 and Au/DDT = 0.2, DDT (2 mL); See Additional file1: SI-1 for more information on their detailed experimental conditions.