Tuning size and shape of gold nanoparticles using seed-mediated growth by unfocused femtosecond laser-induced plasma.

Gold nanoparticles with tunable size and shape are effectively synthesized with a femtosecond laser using the seed and growth method by reducing a KAuCl solution with polyvinylpyrrolidone (PVP) surfactant as a stabilizer. The sizes of gold nanoparticles, including 7.30 to 9.

Synthesis of urea-modified magnetic nanocomposites iron oxide/carbon as a potential biomaterial produced by arc discharge in liquid medium and its in-vivo toxicity assessment.

Carbon-encapsulated magnetic nanoparticles are promising candidate materials for drug-delivery applications. However, due to their hydrophobic and aggregation properties, which indicate lower biocompatibility, proper surface modification of the carbon-based material is required. In the present study, we present the facile route to producing biocompatible magnetic nanocomposite iron oxide/carbon using the liquid medium arc-discharge method.

Synthesis of platinum-based binary and ternary alloy nanoparticles in an intense laser field.

Gold-platinum-silver (Au-Pt-Ag) ion mixtures produced nanoparticle alloys with an average particle size of 5 nm after co-reduction of metal ions by femtosecond laser irradiation of aqueous solutions in the presence of ammonia and polyvinylpyrrolidone, which was used as a stabilizer. Alloy formation was confirmed by analyzing the interplanar spacings measured by diffraction techniques; the interplanar spacings obtained showed good agreement with those derived from Vegard's law. The nanoparticles had elemental composition ratios close to the molar ratios of ions in the mixed solutions, implying a high reduction yield.