6533b852fe1ef96bd12aa4c5
RESEARCH PRODUCT
High spatial resolution mapping of individual and collective localized surface plasmon resonance modes of silver nanoparticle aggregates: correlation to optical measurements
Peter A. Van AkenWilfried SigleJuan P. Martínez-pastorSergio I. MolinaRafael AbarguesCarlos Diaz-egeasubject
Materials scienceNanochemistryNanoparticleEFTEMNanotechnology02 engineering and technology010402 general chemistry01 natural sciencesSilver nanoparticle61.46.DfMaterials Science(all)Surface plasmon resonanceGeneral Materials ScienceSurface plasmon resonanceSpectroscopyPlasmonNano ExpressPlasmonic modes021001 nanoscience & nanotechnologyCondensed Matter Physics78.67.BfAspect ratio (image)0104 chemical sciences87.64.EeChemical physicsPlasmonicsNanoparticle clustersSilver nanoparticles0210 nano-technologyLocalized surface plasmondescription
Non-isolated nanoparticles show a plasmonic response that is governed by the localized surface plasmon resonance (LSPR) collective modes created by the nanoparticle aggregates. The individual and collective LSPR modes of silver nanoparticle aggregated by covalent binding by means of bifunctional molecular linkers are described in this study. Individual contributions to the collective modes are investigated at nanometer scale by means of energy-filtering transmission electron microscopy and compared to ultraviolet–visible spectroscopy. It is found that the aspect ratio and the shape of the clusters are the two main contributors to the low-energy collective modes.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2015-08-04 | Nanoscale Research Letters |