Nano Archive

Coherent acoustic vibration of metal nanoshells

Guillon, C and Langot, P and Del Fatti, N and Vallee, F and Kirakosyan, A. S. and Shahbazyan, T. V. and Cardinal, T and Treguer, M (2007) Coherent acoustic vibration of metal nanoshells. NANO LETTERS, 7 (1). pp. 138-142.

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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 that 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.

Item Type:Article
Subjects:Analytical Science > Microscopy and probe methods
Physical Science > Nanophysics
Physical Science > Nano objects
ID Code:2651
Deposited By:Anuj Seth
Deposited On:09 Jan 2009 11:55
Last Modified:18 Feb 2009 17:51

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