Ultrafast Vibrations of Gold Nanorings
Artikel i vetenskaplig tidskrift, 2011
We investigate the vibrational modes of gold nanorings on a silica substrate with an ultrafast optical technique. By comparison with numerical simulations, we identify several resonances in the gigahertz range associated with axially symmetric deformations of the nanoring and substrate. We elucidate the corresponding mode shapes and find that the substrate plays an important role in determining the mode damping. This study demonstrates the need for a plasmonic nano-optics approach to understand the optical excitation and detection mechanisms for the vibrations of plasmonic nanostructures.
metal
laser
Nanostructure
nanoparticles
ultrafast
silver
wave-guides
picosecond ultrasonics
gigahertz
coherent acoustic-oscillations
dark plasmons
vibrations
modes
ring
raman-scattering
arrays
plasmonics
Författare
T. A. Kelf
Hokkaido University
Y. Tanaka
Hokkaido University
O. Matsuda
Hokkaido University
Elin Maria Kristina Larsson
Chalmers, Teknisk fysik, Kemisk fysik
Kompetenscentrum katalys
D. S. Sutherland
Aarhus Universitet
O. B. Wright
Hokkaido University
Nano Letters
1530-6984 (ISSN) 1530-6992 (eISSN)
Vol. 11 9 3893-3898Ämneskategorier
Annan teknik
DOI
10.1021/nl202045z