Modification of monomolecular self-assembled films by nitrogen-oxygen plasma

Article Abstract:

The modification of octadecanethiolate self-assembled monolayers on Au and Ag by nitrogen-oxygen downstream microwave plasma with variable oxygen content (up to 1%) is studied by synchrotron-based high-resolution X-ray photoelectron spectroscopy. Results suggest that the major effect of oxygen-nitrogen downstream microwave plasma is provided by reactive oxygen-derived species in the downstream region, viz. long-living oxygen radicals and metastable species.

Electric properties

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Laser-induced mutual transposition of the core and the shell of a Au(at the rate)Pt nanosphere

Article Abstract:

The mutual transportation of the core and the shell of a Au(at the rate)Pt core-shell nanosphere is obtained by using picosecond laser pulses to excite the surface-plasmon resonances of platinum. The thermalized photon energy of platinum-plasmon resonances induces the core metal of gold having the lower melting temperature to melt and soak out to the surface to become the shell metal of a newly formed Pt(at the rate)Au core-shell nanosphere.

Science & research, Primary nonferrous metals, not elsewhere classified, Primary Smelting and Refining of Nonferrous Metal (except Copper and Aluminum), Platinum, Research, Thermal properties, Laser photochemistry, Chemical properties

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Preparation of Au(sub core)Ag(sub shell) nanorods and characterization of their surface plasmon resonances

Article Abstract:

The study reports that Au(sub core)Ag(sub shell) nanorods (NRs) can be prepared and that the surface plasmon absorption of silver NRs has been experimentally characterized. The results revealed that the surface gold NRs has been coated with silver by reducing AgCl(super 3-)(sub 4) exclusively on the metallic surface and then restored by removing the silver coating only.

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