Figure 11From: Research Progress in Preparation and Application of Photonic CrystalsSEM images of different crystal faces found in the top view and side view of [99] oriented silica colloidal crystal grown by spin coating (The crystal is made of silica dispersion in ethanol, which contains 30% particle volume fraction): a Top view corresponding to (100) planes; b Vertical (100) plane; c Inclined (111) plane and d Vertical (110) plane [67]Back to article page