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Schematic of the experiment equipment for PCIHVD method to fabricate colloidal photonic crystals.
Transmittance spectra of the PCs formed from , , , , and PS spheres by PCIHVD method under the optimal growth condition.
Top view SEM images of the PCs formed from (a) , (b) , (c) , and (d) PS spheres by PCIHVD method under the optimal growth condition.
Cross-section SEM images [(a)–(c)] of colloidal photonic crystals made by PCIHVD method under the optimal growing condition from PS spheres. The nether right plot (d) shows the dependence of the thickness of colloidal crystal films (plotted as the number of layers) on the concentration of PS spheres in dispersion.
Influence of different growing conditions on the quality of PS PCs made with the PCIHVD method (see explanations in Ref. 24).
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