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Coherent acoustic vibration of metal nanoshells | | C. Guillon
; P. Langot
; N. Del Fatti
; F. Vallee
; A. S. Kirakosyan
; T. V. Shahbazyan
; T. Cardinal
; M. Treguer
; | | Date: |
10 Jan 2007 | | Journal: | Nano Lett. 7, 138 (2007) | | Subject: | Mesoscopic Systems and Quantum Hall Effect; Materials Science | | Abstract: | 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. | | Source: | arXiv, cond-mat/0701224 | | Services: | Forum | Review | PDF | Favorites | |
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