Search results for "Gold particles"

showing 2 items of 2 documents

Manipulating and squeezing the photon local density of states with plasmonic nanoparticle networks

2010

International audience; In this Brief Report, we show that when interconnected networks of gold particles are deposited onto a clean planar surface, they strongly modify the photonic local density of states LDOS in the immediate proximity of the self-assembled nanoparticles. They represent unique architectures for the subwavelength patterning of initially flat photonic LDOS. Moreover, we show that their local spectral signatures are well suited for the generation of sites able to enhance molecular fluorescence intensity.

Local density of statesMaterials sciencePhotonbusiness.industryPhysics::OpticsNanoparticleNanotechnology02 engineering and technology021001 nanoscience & nanotechnologyCondensed Matter Physics78.20.Bh 73.20.Mf 68.37.Uv01 natural sciencesElectronic Optical and Magnetic MaterialsPlanarGold particles0103 physical sciencesQuasiparticle[ SPI.NANO ] Engineering Sciences [physics]/Micro and nanotechnologies/Microelectronics[SPI.NANO]Engineering Sciences [physics]/Micro and nanotechnologies/MicroelectronicsPhotonics010306 general physics0210 nano-technologybusinessPlasmonPhysical Review B
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Characterization of Iron−Carbonyl-Protected Gold Clusters

2009

Ligand-stabilized nanometer-sized gold particles are interesting building blocks for molecular electronics, precursors for catalysts, optical labels for biomolecules and diagnosis, and potential nontoxic carriers for therapeutics. In this work we characterize for the first time, by means of near-infrared and Raman spectroscopy and time-dependent density functional calculations, gold clusters protected with iron-carbonyl ligands, such as {Au(22)[Fe(CO)(4)](12)}(6-) shown in the figure. Surprisingly, our results show that these novel compounds bear many analogues to another, well-studied, class of gold clusters, namely those of thiolate-monolayer-protected gold clusters. Our work adds a new d…

Models MolecularTime FactorsSpectrophotometry InfraredPhosphinesInfraredIronMolecular ConformationElectronsNanotechnologySpectrum Analysis RamanBiochemistryCatalysisCatalysissymbols.namesakeColloid and Surface ChemistryNano-chemistry.chemical_classificationAldehydesChemistryBiomoleculeMolecular electronicsGeneral ChemistryCombinatorial chemistryCharacterization (materials science)Gold particlesLinear ModelssymbolsQuantum TheoryGoldRaman spectroscopyJournal of the American Chemical Society
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