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Abstract:

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.

Registro:

Documento: Artículo
Título:Metal nanoparticle ensembles: Tunable laser pulses distinguish monomer from dimer vibrations
Autor:Jais, P.M.; Murray, D.B.; Merlin, R.; Bragas, A.V.
Filiación:Departamento de Física, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, 1428 Buenos Aires, Argentina
Department of Physics, University of British Columbia Okanagan, Kelowna, BC V1V 1V7, Canada
Department of Physics, University of Michigan, Ann Arbor, MI 48109-1040, United States
IFIBA, Consejo Nacional de Investigaciones Científicas y Técnicas, Argentina
Palabras clave: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
Año:2011
Volumen:11
Número:9
Página de inicio:3685
Página de fin:3689
DOI: http://dx.doi.org/10.1021/nl201648e
Título revista:Nano Letters
Título revista abreviado:Nano Lett.
ISSN:15306984
CAS:gold, 7440-57-5; Gold, 7440-57-5; Metals; Polymers
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_15306984_v11_n9_p3685_Jais

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Citas:

---------- APA ----------
Jais, P.M., Murray, D.B., Merlin, R. & Bragas, A.V. (2011) . Metal nanoparticle ensembles: Tunable laser pulses distinguish monomer from dimer vibrations. Nano Letters, 11(9), 3685-3689.
http://dx.doi.org/10.1021/nl201648e
---------- CHICAGO ----------
Jais, P.M., Murray, D.B., Merlin, R., Bragas, A.V. "Metal nanoparticle ensembles: Tunable laser pulses distinguish monomer from dimer vibrations" . Nano Letters 11, no. 9 (2011) : 3685-3689.
http://dx.doi.org/10.1021/nl201648e
---------- MLA ----------
Jais, P.M., Murray, D.B., Merlin, R., Bragas, A.V. "Metal nanoparticle ensembles: Tunable laser pulses distinguish monomer from dimer vibrations" . Nano Letters, vol. 11, no. 9, 2011, pp. 3685-3689.
http://dx.doi.org/10.1021/nl201648e
---------- VANCOUVER ----------
Jais, P.M., Murray, D.B., Merlin, R., Bragas, A.V. Metal nanoparticle ensembles: Tunable laser pulses distinguish monomer from dimer vibrations. Nano Lett. 2011;11(9):3685-3689.
http://dx.doi.org/10.1021/nl201648e