Metal nanoparticle ensembles: Tunable laser pulses distinguish monomer from dimer vibrations

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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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Autor principal:	Bragas, Andrea Verónica
Publicado:	2011
Materias:	acoustic vibrations Gold nanoparticles stimulated Brillouin scattering time-resolved spectroscopy Acoustic vibration Central wavelength Excitation process Mechanical oscillations Metal nanoparticles Resonant interaction Stimulated Brillouin Strong enhancement Time-resolved spectroscopy Tunable laser pulse Dimers Laser pulses Laser spectroscopy Lasers Monomers Nanoparticles Plasmons Pulse generators gold metal metal nanoparticle nanoparticle polymer acoustics article chemistry dimerization mass spectrometry methodology nanotechnology oscillometry physics surface plasmon resonance vibration Acoustics Dimerization Gold Mass Spectrometry Metal Nanoparticles Metals Nanotechnology Oscillometry Physics Polymers Surface Plasmon Resonance Vibration
Acceso en línea:	https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_15306984_v11_n9_p3685_Jais http://hdl.handle.net/20.500.12110/paper_15306984_v11_n9_p3685_Jais
Aporte de:	Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires

id	paper:paper_15306984_v11_n9_p3685_Jais
record_format	dspace
spelling	paper:paper_15306984_v11_n9_p3685_Jais2023-06-08T16:19:46Z Metal nanoparticle ensembles: Tunable laser pulses distinguish monomer from dimer vibrations Bragas, Andrea Verónica acoustic vibrations Gold nanoparticles stimulated Brillouin scattering time-resolved spectroscopy Acoustic vibration Central wavelength Excitation process Gold nanoparticles Mechanical oscillations Metal nanoparticles Resonant interaction Stimulated Brillouin Strong enhancement Time-resolved spectroscopy Tunable laser pulse Dimers Laser pulses Laser spectroscopy Lasers Monomers Nanoparticles Plasmons Pulse generators gold metal metal nanoparticle nanoparticle polymer acoustics article chemistry dimerization mass spectrometry methodology nanotechnology oscillometry physics surface plasmon resonance vibration Acoustics Dimerization Gold Mass Spectrometry Metal Nanoparticles Metals Nanoparticles Nanotechnology Oscillometry Physics Polymers Surface Plasmon Resonance Vibration 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 amplitudes of which exhibit a strong enhancement when the laser central wavelength is tuned to resonate with the corresponding plasmon. Because of the resonant selection in the excitation process, the widths of the acoustic modes are significantly smaller than broadening caused by the spread in radii in the ensemble. © 2011 American Chemical Society. Fil:Bragas, A.V. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. 2011 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_15306984_v11_n9_p3685_Jais http://hdl.handle.net/20.500.12110/paper_15306984_v11_n9_p3685_Jais
institution	Universidad de Buenos Aires
institution_str	I-28
repository_str	R-134
collection	Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic	acoustic vibrations Gold nanoparticles stimulated Brillouin scattering time-resolved spectroscopy Acoustic vibration Central wavelength Excitation process Gold nanoparticles Mechanical oscillations Metal nanoparticles Resonant interaction Stimulated Brillouin Strong enhancement Time-resolved spectroscopy Tunable laser pulse Dimers Laser pulses Laser spectroscopy Lasers Monomers Nanoparticles Plasmons Pulse generators gold metal metal nanoparticle nanoparticle polymer acoustics article chemistry dimerization mass spectrometry methodology nanotechnology oscillometry physics surface plasmon resonance vibration Acoustics Dimerization Gold Mass Spectrometry Metal Nanoparticles Metals Nanoparticles Nanotechnology Oscillometry Physics Polymers Surface Plasmon Resonance Vibration
spellingShingle	acoustic vibrations Gold nanoparticles stimulated Brillouin scattering time-resolved spectroscopy Acoustic vibration Central wavelength Excitation process Gold nanoparticles Mechanical oscillations Metal nanoparticles Resonant interaction Stimulated Brillouin Strong enhancement Time-resolved spectroscopy Tunable laser pulse Dimers Laser pulses Laser spectroscopy Lasers Monomers Nanoparticles Plasmons Pulse generators gold metal metal nanoparticle nanoparticle polymer acoustics article chemistry dimerization mass spectrometry methodology nanotechnology oscillometry physics surface plasmon resonance vibration Acoustics Dimerization Gold Mass Spectrometry Metal Nanoparticles Metals Nanoparticles Nanotechnology Oscillometry Physics Polymers Surface Plasmon Resonance Vibration Bragas, Andrea Verónica Metal nanoparticle ensembles: Tunable laser pulses distinguish monomer from dimer vibrations
topic_facet	acoustic vibrations Gold nanoparticles stimulated Brillouin scattering time-resolved spectroscopy Acoustic vibration Central wavelength Excitation process Gold nanoparticles Mechanical oscillations Metal nanoparticles Resonant interaction Stimulated Brillouin Strong enhancement Time-resolved spectroscopy Tunable laser pulse Dimers Laser pulses Laser spectroscopy Lasers Monomers Nanoparticles Plasmons Pulse generators gold metal metal nanoparticle nanoparticle polymer acoustics article chemistry dimerization mass spectrometry methodology nanotechnology oscillometry physics surface plasmon resonance vibration Acoustics Dimerization Gold Mass Spectrometry Metal Nanoparticles Metals Nanoparticles Nanotechnology Oscillometry Physics Polymers Surface Plasmon Resonance Vibration
description	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 amplitudes of which exhibit a strong enhancement when the laser central wavelength is tuned to resonate with the corresponding plasmon. Because of the resonant selection in the excitation process, the widths of the acoustic modes are significantly smaller than broadening caused by the spread in radii in the ensemble. © 2011 American Chemical Society.
author	Bragas, Andrea Verónica
author_facet	Bragas, Andrea Verónica
author_sort	Bragas, Andrea Verónica
title	Metal nanoparticle ensembles: Tunable laser pulses distinguish monomer from dimer vibrations
title_short	Metal nanoparticle ensembles: Tunable laser pulses distinguish monomer from dimer vibrations
title_full	Metal nanoparticle ensembles: Tunable laser pulses distinguish monomer from dimer vibrations
title_fullStr	Metal nanoparticle ensembles: Tunable laser pulses distinguish monomer from dimer vibrations
title_full_unstemmed	Metal nanoparticle ensembles: Tunable laser pulses distinguish monomer from dimer vibrations
title_sort	metal nanoparticle ensembles: tunable laser pulses distinguish monomer from dimer vibrations
publishDate	2011
url	https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_15306984_v11_n9_p3685_Jais http://hdl.handle.net/20.500.12110/paper_15306984_v11_n9_p3685_Jais
work_keys_str_mv	AT bragasandreaveronica metalnanoparticleensemblestunablelaserpulsesdistinguishmonomerfromdimervibrations
_version_	1768542284417073152

Metal nanoparticle ensembles: Tunable laser pulses distinguish monomer from dimer vibrations

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