Metal Nanoparticle Ensembles: Tunable Laser Pulses Distinguish Monomer from Dimer Vibrations

Resonant interaction of laser pulses with plasmons is used to identify vibrations associated with isolated spheres and pairs of contacting spheres in a system of gold nanoparticles. The optical pulses generate coherent mechanical oscillations of both monomers and dimers in the 5–150 GHz range, the a...

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Veröffentlicht in:	Nano letters 2011-09, Vol.11 (9), p.3685-3689
Hauptverfasser:	Jais, Pablo M, Murray, Daniel B, Merlin, Roberto, Bragas, Andrea V
Format:	Artikel
Sprache:	eng
Schlagworte:	Acoustics Collective excitations (including excitons, polarons, plasmons and other charge-density excitations) Condensed matter: electronic structure, electrical, magnetic, and optical properties Condensed matter: structure, mechanical and thermal properties Cross-disciplinary physics: materials science rheology Dimerization Dimers Electronic structure and electrical properties of surfaces, interfaces, thin films and low-dimensional structures Exact sciences and technology Gold - chemistry Lasers Lattice dynamics Mass Spectrometry - methods Materials science Metal Nanoparticles - chemistry Metals - chemistry Monomers Nanocrystalline materials Nanoparticles - chemistry Nanoscale materials and structures: fabrication and characterization Nanostructure Nanotechnology - methods Oscillations Oscillometry - methods Phonons in low-dimensional structures and small particles Physics Physics - methods Plasmons Polymers - chemistry Resonant interactions Spreads Surface and interface electron states Surface Plasmon Resonance Vibration
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