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Schematic representation of a monolayer (a) and a bilayer (b) film on a metal support. Top and cross views are shown. Si ion positions are in [SiO4] tetrahedra is indicated by dots.
Large-scale (a) and atomically resolved (b) STM images of the 2 MLE silica films on Pt(111). Tunneling parameters: bias 4.4 V and current 0.1 nA (a); 1.3 V, 0.13 nA (b).
IRA-spectra of 1 MLE (top) and 2 MLE (bottom) films grown on Pt(111).
(a) STM image of the 1 MLE film on Pt(111). Height profile along the A-B line, indicated in (a), is shown in (b). The inset shows a close-up image demonstrating the vitreous state of silica islands (cf., Fig. 2(b)). The arrow indicates silica stripes bridging the islands (tunneling parameters 0.8 V, 0.06 nA).
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