Schematic illustration of the processes to fabricate a lateral stacking structure for different colloidal crystals.
(a) Cross-sectional SEM image and (b) transmission spectrum of the colloidal crystal fabricated in the cell.
(a) Photograph of a lateral stacking structure composed of two colloidal crystals with diameters of 240 and 200 nm, respectively. SEM images: (b) first colloidal crystal (240 nm), (c) second colloidal crystal (200 nm), and (d) the boundary area of the lateral stacking structure.
Transmission spectra of the first colloidal crystal (240 nm) and the second colloidal crystal (200 nm), and the boundary area corresponding to the areas in Figs. 3(b)–3(d).
Colloidal crystals patterned by means of lateral autocloning using two kinds of colloidal suspension (240 and 200 nm).
Typical instances of the influence of layer width on lateral autocloning: (a) with a suitable width and (b) with an exceeded width. Red areas are composed of spheres with a diameter of 269 nm.
(a) Deformation on the original pattern and (b) improved formation with a modified pattern. The white dashed lines indicate the original patterns of the upper substrates, fabricated with plastic plates.
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