منابع مشابه
Shape Control of Colloidal Metal Nanocrystals
reviews P. Yang et al. Colloidal metal nanoparticles are emerging as key materials for catalysis, plasmonics, sensing, and spectroscopy. Within these applications, control of nanoparticle shape lends increasing functionality and selectivity. Shape-controlled nanocrystals possess well-defined surfaces and morphologies because their nucleation and growth are controlled at the atomic level. An ove...
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Morphological control of FePt nanoparticles has been systematically studied. By varying synthetic parameters including precursors, solvents, amount of surfactants, and heating rate of the solution, the particle size from 2 to 9 nm can be tuned with 1 nm accuracy. While most particles are spherical in shape, cubic particles can be obtained when particles are greater than 7 nm. Rod-shape nanopart...
متن کاملShape, size, and assembly control of PbTe nanocrystals.
The small band gap and the large Bohr radius1 of the Pbchalcogenide enable unique optical, electrical, and chemical properties, presenting this family of materials as a good candidate for potential application in solar cells,2-4 thermoelectric (TE)5 devices, telecommunication,6 field effect transistors (FET),7 and biological imaging. Integrating Pb-chalcogenide nanostructures in these devices r...
متن کاملShape control of PbSe nanocrystals using noble metal seed particles.
We demonstrate that the shape of PbSe nanocrystals can be controlled systematically by seeding their growth with noble metal nanoparticles (Au, Ag, or Pd) and varying the seed and precursor concentrations. Cylinders (quantum rods), cubes, crosses, stars, and branched structures were produced in high yield at 150 degrees C in reaction times of a few minutes. Although their absorption spectrum do...
متن کاملPt nanocrystals: shape control and Langmuir-Blodgett monolayer formation.
We report the synthesis of monodisperse Pt nanocrystals with three different shapes-cubes, cuboctahedra, and octahedra, selectively, with similar sizes of 9-10 nm by a modified polyol process. We found that addition of silver ion enhances the crystal growth rate along 100, and essentially determines the shape and surface structure of the Pt nanocrystals. After the reaction, the silver species c...
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ژورنال
عنوان ژورنال: Journal of Applied Physics
سال: 2009
ISSN: 0021-8979,1089-7550
DOI: 10.1063/1.3077210