Delalande, R. ; Burr, L. ; Charron, E. ; Jouini, M. ; Toimil-Molares, M. E. ; Belliard, L. (2019)
Vibrational response of Au-Ag alloy and porous Au single nanowires probed by ultrafast pump-probe spectroscopy.
In: Applied Physics Letters, 115 (8)
doi: 10.1063/1.5108772
Artikel, Bibliographie
Kurzbeschreibung (Abstract)
We report on the ultrafast vibrational response of single Au-Ag alloy and Au porous nanowires obtained by the template method. The oscillations of the sample reflectivity are correlated with eigenmodes (EM) confined in the nanowire. Taking advantage of a free standing geometry, we are able to detect few harmonics. Coupling electron microscopy and pump-probe investigations with a very high spectral resolution performed on the same wire, we demonstrate that both longitudinal and transverse sound velocities could be obtained for variable Au concentrations. An additional quadrupolar mode is also observed and reproduced by finite element simulation. Finally, porous nanowires are investigated.
| Typ des Eintrags: | Artikel |
|---|---|
| Erschienen: | 2019 |
| Autor(en): | Delalande, R. ; Burr, L. ; Charron, E. ; Jouini, M. ; Toimil-Molares, M. E. ; Belliard, L. |
| Art des Eintrags: | Bibliographie |
| Titel: | Vibrational response of Au-Ag alloy and porous Au single nanowires probed by ultrafast pump-probe spectroscopy |
| Sprache: | Englisch |
| Publikationsjahr: | 19 August 2019 |
| Verlag: | AIP Publishing |
| Titel der Zeitschrift, Zeitung oder Schriftenreihe: | Applied Physics Letters |
| Jahrgang/Volume einer Zeitschrift: | 115 |
| (Heft-)Nummer: | 8 |
| DOI: | 10.1063/1.5108772 |
| Kurzbeschreibung (Abstract): | We report on the ultrafast vibrational response of single Au-Ag alloy and Au porous nanowires obtained by the template method. The oscillations of the sample reflectivity are correlated with eigenmodes (EM) confined in the nanowire. Taking advantage of a free standing geometry, we are able to detect few harmonics. Coupling electron microscopy and pump-probe investigations with a very high spectral resolution performed on the same wire, we demonstrate that both longitudinal and transverse sound velocities could be obtained for variable Au concentrations. An additional quadrupolar mode is also observed and reproduced by finite element simulation. Finally, porous nanowires are investigated. |
| Zusätzliche Informationen: | Artikel-ID: 083103 |
| Fachbereich(e)/-gebiet(e): | 11 Fachbereich Material- und Geowissenschaften 11 Fachbereich Material- und Geowissenschaften > Materialwissenschaft 11 Fachbereich Material- und Geowissenschaften > Materialwissenschaft > Fachgebiet Ionenstrahlmodifizierte Materialien |
| Hinterlegungsdatum: | 29 Feb 2024 08:36 |
| Letzte Änderung: | 29 Feb 2024 08:36 |
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