CPL - Chalmers Publication Library
| Utbildning | Forskning | Styrkeområden | Om Chalmers | In English In English Ej inloggad.

Ultrafast Vibrations of Gold Nanorings

T. A. Kelf ; Y. Tanaka ; O. Matsuda ; Elin Larsson (Institutionen för teknisk fysik, Kemisk fysik ; Kompetenscentrum katalys (KCK)) ; D. S. Sutherland ; O. B. Wright
Nano Letters (1530-6984). Vol. 11 (2011), 9, p. 3893-3898.
[Artikel, refereegranskad vetenskaplig]

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.

Nyckelord: Nanostructure, vibrations, gigahertz, ultrafast, ring, plasmonics, coherent acoustic-oscillations, picosecond ultrasonics, metal, nanoparticles, raman-scattering, dark plasmons, wave-guides, silver, arrays, modes, laser



Denna post skapades 2011-12-08. Senast ändrad 2012-04-05.
CPL Pubid: 149776

 

Läs direkt!


Länk till annan sajt (kan kräva inloggning)


Institutioner (Chalmers)

Institutionen för teknisk fysik, Kemisk fysik (1900-2015)
Kompetenscentrum katalys (KCK)

Ämnesområden

Teknisk fysik

Chalmers infrastruktur