Fig. 3: Space-controlled growth of 3D structures.
From: Self-growth of programmable 2D- and 3D-coupling responsive coating for anti-counterfeiting
Schematic illustration (a) and photographs (b) of anti-counterfeiting coating (P1) under UV (365 nm, 2.8 mW/cm2, 10 min) and Vis. (525 nm, 1.34 mW/cm2, 12 min). The scale bar is 0.4 cm. c The absorption of growing (1) and non-growing areas (2 (Vis., 12 min) and 3 (UV, 10 min)). d Fluorescent cross-section images of the grown structure (Grown time: 460 s). The scale bar is 1 mm. e Fluorescence intensity of the different regions was obtained using ImageJ software. f 3D profiles of the grown sample (P8). Inset in (f): optical photographs of grown sample. The scale bar is 0.5 cm.
