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Updated: Apr 20, 2026
Photodeposition of Pd onto Colloidal Au Nanorods by Surface Plasmon Excitation
Published on: August 15, 2019
Anisotropic dispersion and partial localization of acoustic surface plasmons on an atomically stepped surface:
M Smerieri1, L Vattuone2, L Savio1
1IMEM-CNR Unitá Operativa di Genova, Via Dodecaneso 33, 16146 Genova, Italy.
Abstract:
Understanding acoustic surface plasmons (ASPs) in the presence of nanosized gratings is necessary for the development of future devices that couple light with ASPs. We show here by experiment and theory that two ASPs exist on Au(788), a vicinal surface with an ordered array of monoatomic steps. The ASPs propagate across the steps as long as their wavelength exceeds the terrace width, thereafter becoming localized. Our investigation identifies, for the first time, ASPs coupled with intersubband transitions involving multiple surface-state subbands.
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