Time-Resolved Photodynamics of Triangular-Shaped Silver Nanoplates

The authors measured the ultrafast response of triangular silver nanoparticles upon femtosecond excitation of their plasmon resonance. After a fast electron relaxation, the signature of a bimodal mech. vibration of the particle is apparent as a spectral modulation. The authors identify the two lowest frequency, totally sym. vibrations of the particle as responsible for this modulation, through their influence on the plasmon peak position and width, in full agreement with the results of a variational elastodynamic model that is also presented. From the anal. of the phase the authors conclude that thermal expansion and electron pressure, resp., are responsible for the excitation of the two vibrations. [on SciFinder (R)]


Published in:
Nano Letters, 6, 1, 7-10
Year:
2006
Keywords:
Note:
CAN 144:179709
73-5
Optical, Electron, and Mass Spectroscopy and Other Related Properties
Laboratoire de Spectroscopie Ultrarapide,Ecole Polytechnique Federale de Lausanne (EPFL),Lausanne,Switz.
Journal
1530-6984
written in English.
7440-22-4 (Silver) Role: PEP (Physical, engineering or chemical process), PYP (Physical process), PROC (Process) (nanoparticles; ultrafast response of triangular silver nanoparticles upon femtosecond excitation of their plasmon resonance)
Other identifiers:
Laboratories:




 Record created 2007-05-31, last modified 2018-03-17


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