GUILLON, C.; LANGOT, P.; DEL FATTI, N.; VALLEE, F.; KIRAKOSYAN, A. S.; SHAHBAZYAN, T. V.; CARDINAL, Thierry; TRÉGUER-DELAPIERRE, Mona

doi:10.1021/nl062380d

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GUILLON, C.
Centre de physique moléculaire optique et hertzienne [CPMOH]

LANGOT, P.
Centre de physique moléculaire optique et hertzienne [CPMOH]

DEL FATTI, N.
Centre de physique moléculaire optique et hertzienne [CPMOH]

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Nano Letters. 2007, vol. 7, n° 1, p. 138-142

American Chemical Society

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Using time-resolved pump-probe spectroscopy we have performed the first investigation of the vibrational modes of gold nanoshells. The fundamental isotropic mode launched by a femtosecond pump pulse manifests itself in a pronounced time-domain modulation of the differential transmission probed at the frequency of nanoshell surface plasmon resonance. The modulation amplitude is significantly stronger and the period is longer than in a gold nanoparticle of the same overall size, in agreement with theoretical calculations. This distinct acoustical signature of nanoshells provides a new and efficient method for identifying these versatile nanostructures and for studying their mechanical and structural properties.< Leer menos

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Gold

Nanoparticles

Nanostructures

Acoustic

Vibration

Metal

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Coherent acoustic vibration of metal nanoshells

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