High-resolution soft X-ray photoelectron spectroscopic studies and scanning Auger microscopy studies of the air oxidation of alkylated silicon (111) surfaces

Article Abstract:

The oxidation of alkylated silicon (111) surfaces under ambient conditions is studied using high-resolution soft X-ray photoelectron spectroscopy. The observations show that the alkylated surface formed oxides in isolated, heterogeneous patches on the surface, which is attributed to the replacement of surface Si-H or Si-Cl bonds by Si-C bonds, which basically disturbs the mechanism of Si surface oxidation by blocking the surface physically from the ambient reactants.

Analysis, Spectra, Oxidation-reduction reaction, Oxidation-reduction reactions, X-ray spectroscopy, Auger effect

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Influence of small additions of Al(sub 2)O(sub 3) on the properties of the Na(sub 2)O.3SiO(sub 2) glass

Article Abstract:

The changes in structural properties of sodium alumino-silicate glasses of composition Na2O.xAl2O3.(3-x)SiO2 were investigated as a function of Al2O3 concentrations. Experimental techniques or computational investigations were not able to provide unequivocable responses for the rationalization of the measured properties of sodium alumino-silicate glasses.

Sodium, Sodium & Sodium Compounds, Aluminum

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A vapor-solid strategy to silica sheathed metal nanostructures and microstr4uctures via reactions of metal chlorides with silicon

Article Abstract:

A facile vapor-solid strategy is developed to prepare silica-sheathed metal micro/nanostructures with controllable shapes. As examples, silica-sheathed nickel nanowires, microcubes, nanocubes with an epitaxial tail, and one-dimensional assembly structures of nanoparticles as well as silica-sheathed cobalt and copper micro/nanostructures are synthesized.

Chlorides, Dichloropropane, Nanoparticles

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