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A method for creating a patterned array of sub-micron crystals on the surface of a doped layered dichalcogenide using a scanning electron microscope has been developed. Exposing the surface of copper doped TiSe 2 to iodine vapor induces sub-micron CuI crystals to form upon the surface. The copper ions diffuse to the surface from within the crystal to react with the iodine vapor, with larger...
The adsorption of SO 2 on SnO 2 surfaces obtained from hydrolysis of SnCl 4 and NH 3 was studied by X-ray Photoelectron Spectroscopy. Tin dioxide surfaces were treated with SO 2 at temperatures ranging from 300 to 900°C. For this temperature range, XPS shows that SO 2 is adsorbed on tin dioxide surfaces to form two sulphured species: SO 22 ...
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