6533b823fe1ef96bd127f7cf

RESEARCH PRODUCT

Plasmonic Focusing Reduces Ensemble Linewidth of Silver-Coated Gold Nanorods

Yuriy KhalavkaInga ZinsCarsten SönnichsenJan BeckerOlaf SchubertArpad Jakab

subject

SilverMaterials scienceMacromolecular SubstancesSurface PropertiesMolecular ConformationPhysics::OpticsBioengineeringLaser linewidthOpticsMaterials TestingPhysics::Atomic and Molecular ClustersNanotechnologyGeneral Materials ScienceParticle SizeSurface plasmon resonancePlasmonNanotubesbusiness.industryMechanical EngineeringResonanceGeneral ChemistrySurface Plasmon ResonanceCondensed Matter PhysicsWavelengthParticle-size distributionOptoelectronicsParticleNanorodGoldCrystallizationbusiness

description

Silver coating gold nanorods reduces the ensemble plasmon line width by changing the relation connecting particle shape and plasmon resonance wavelength. This change, we term "plasmonic focusing", leads to less variation of resonance wavelengths for the same particle size distribution. We also find smaller single particle linewidth comparing resonances at the same wavelength but show that this does not contribute to the ensemble linewidth narrowing.

https://doi.org/10.1021/nl080720k