Identificador persistente para citar o vincular este elemento: http://hdl.handle.net/10553/42705
Título: Tailored Hypersound Generation in Single Plasmonic Nanoantennas
Autores/as: Della Picca, Fabricio
Berte, Rodrigo
Rahmani, Mohsen
Albella, Pablo 
Bujjamer, Juan M.
Poblet, Martín
Cortés, Emiliano
Maier, Stefan A.
Bragas, Andrea V.
Palabras clave: Coherent acoustic phonon
Gold-silica nanoantenna
Nanoresonator
Hypersound
Pump−probe
Fecha de publicación: 2016
Publicación seriada: Nano Letters 
Resumen: Ultrashort laser pulses impinging on a plasmonic nanostructure trigger a highly dynamic scenario in the interplay of electronic relaxation with lattice vibrations, which can be experimentally probed via the generation of coherent phonons. In this Letter, we present studies of hypersound generation in the range of a few to tens of gigahertz on single gold plasmonic nanoantennas, which have additionally been subjected to predesigned mechanical constraints via silica bridges. Using these hybrid gold/silica nanoantennas, we demonstrate experimentally and via numerical simulations how mechanical constraints allow control over their vibrational mode spectrum. Degenerate pump–probe techniques with double modulation are performed in order to detect the small changes produced in the probe transmission by the mechanical oscillations of these single nanoantennas.
URI: http://hdl.handle.net/10553/42705
ISSN: 1530-6984
DOI: 10.1021/acs.nanolett.5b04991
Fuente: Nano Letters [ISSN 1530-6984], v. 16, p. 1428-1434, (2016)
Colección:Artículos
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