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The Last Step in Converting the Surface Plasmonic Energy into Heat by Nanocages and Nanocubes on Substrates
Author(s) -
Szymanski Paul,
Mahmoud Mahmoud A.,
ElSayed Mostafa A.
Publication year - 2013
Publication title -
small
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 3.785
H-Index - 236
eISSN - 1613-6829
pISSN - 1613-6810
DOI - 10.1002/smll.201300233
Subject(s) - nanocages , nanoparticle , plasmon , materials science , ultrashort pulse , phonon , picosecond , nanotechnology , monolayer , optoelectronics , laser , optics , physics , chemistry , condensed matter physics , biochemistry , catalysis
The ultrafast coherent excitation and decay of localized surface plasmons are used to record the coherent oscillations of the medium surrounding nanoparticles resulting from phonon–phonon relaxation processes. The plasmonic nanoparticles used in this study are Ag nanocubes and Au nanocages deposited in a Langmuir–Blodgett monolayer. Using two sub‐picosecond laser pulses, low‐frequency oscillations resulting from the nanoparticle–substrate coupling are observed.