Laser synthesis of hybrids Si-Au complex

Au±Si eutectic alloy formation by Si implantation in polycrystalline Au

Di€erent doses of high-energy Si (0.2±4.5 MeV) were implanted in polycrystalline Au foils (35 lm thick) to form a low melting point Au±Si alloy which can be used for gold soldering. A Au±Si eutectic structure has been observed in the implanted Au foils after annealing at 400°C for 1 h. The Au±Si liquid phase was di€used in the polycrystalline Au foil along the grain boundaries which were ̄atten...

Graphene-Ag Hybrids on Laser-Textured Si Surface for SERS Detection

Surface-enhanced Raman scattering (SERS) has been extensively investigated as an effective approach for trace species detection. Silver nanostructures are high-sensitivity SERS substrates in common use, but their poor chemical stability impedes practical applications. Herein, a stable and sensitive SERS substrate based on the hybrid structures of graphene/silver film/laser-textured Si (G/Ag/LTS...

Fabrication of a Au/Si nanocomposite structure by nanosecond pulsed laser irradiation.

A gold/silicon nanocomposite structure (NCS) was formed on a Si(100) surface by nanosecond pulsed laser irradiation. The Au/Si NCS contained both Au nanoparticles (NPs) and Au-Si alloy layers. We report that the use of laser irradiation to form Au NPs comprises two competing processes: a top-down effect involving decomposition into smaller NPs and a bottom-up effect involving self-assembly or s...

Microstructure of nanostructured amorphous Si-Au-alloys

Synthesis, interface (Au/M2Pc2/p-Si), electrochemical and electrocatalytic properties of novel ball-type phthalocyanines.

The phthalodinitrile derivative (3) was prepared by the reaction of 4,4'-(octahydro-4,7-methano-5H-inden-5-ylidene)bisphenol (1) and 4-nitrophthalonitrile (2) with dry DMF as the solvent in the presence of the base K(2)CO(3) by the method of nucleophilic substitution of an activated nitro group in an aromatic ring. The template reaction of 3 with the corresponding metal salts gave the novel bi-...