These figures visually demonstrate two striking effects. Firstly, the transmittance of the coated glass is
higher than the bare glass and is highest when the glass is coated on both sides (double AR). Secondly, the reflectivity, observed in the pictures as the reflection of the photo-taking camera, is reduced on the coated samples. No reflected image could be found on the double AR part of glass region in Additional file 1: Figure S1(b). Comparing Additional file 1: Figure S1(a) and Figure S1(b), the AR effect was much more pronounced in the double AR sample, as a result of the improvement of both abrupt interfaces of glass by the nanospheres. (TIF 7 MB) Additional file 2: Isotherm of fresh and ageing suspension. Ageing suspension gave a higher collapse pressure than fresh suspension with find more the same surfactant concentration. (TIFF 154 KB) Additional file 3: Compression-relaxation
cycles. The curve demonstrated that the monolayer of sphere on water is more compact after performing several compression-relaxation cycles. (TIFF 173 KB) Additional file 4: Influence of other parameters. Influence of parameters including compression-relaxation cycles, dipper speed and annealing effect. (TIFF 4 MB) References 1. Stöber W, Fink A, Bohn E: Controlled growth of monodisperse silica spheres in the micron size range . J Colloid Interface Sci 1968, 26:62–69.CrossRef 2. Xia Y, Gates B, Yin Y, Lu Y: Monodispersed colloidal spheres: old materials with new
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