Individual and collective vibrational modes ...
Type de document :
Compte-rendu et recension critique d'ouvrage
Titre :
Individual and collective vibrational modes of nanostructures studied by picosecond ultrasonics
Auteur(s) :
Bienville, T. [Auteur]
Institut des Nanosciences de Paris [INSP]
Robillard, Jean-François [Auteur]
Institut d’Électronique, de Microélectronique et de Nanotechnologie - UMR 8520 [IEMN]
Belliard, Laurent [Auteur]
Institut des Nanosciences de Paris [INSP]
Roch-Jeune, Isabelle [Auteur]
Institut d’Électronique, de Microélectronique et de Nanotechnologie - UMR 8520 [IEMN]
Devos, Arnaud [Auteur]
Institut d’Électronique, de Microélectronique et de Nanotechnologie - UMR 8520 [IEMN]
Perrin, Bernard [Auteur]
Institut des Nanosciences de Paris [INSP]
Institut des Nanosciences de Paris [INSP]
Robillard, Jean-François [Auteur]
Institut d’Électronique, de Microélectronique et de Nanotechnologie - UMR 8520 [IEMN]
Belliard, Laurent [Auteur]
Institut des Nanosciences de Paris [INSP]
Roch-Jeune, Isabelle [Auteur]
Institut d’Électronique, de Microélectronique et de Nanotechnologie - UMR 8520 [IEMN]
Devos, Arnaud [Auteur]
Institut d’Électronique, de Microélectronique et de Nanotechnologie - UMR 8520 [IEMN]
Perrin, Bernard [Auteur]
Institut des Nanosciences de Paris [INSP]
Titre de la revue :
Ultrasonics
Pagination :
1289-1294
Éditeur :
Elsevier
Date de publication :
2006
ISSN :
0041-624X
Mot(s)-clé(s) en anglais :
Picosecond laser ultrasonic
Nanostructures
Vibration mode
Nanostructures
Vibration mode
Discipline(s) HAL :
Sciences de l'ingénieur [physics]
Résumé en anglais : [en]
We report on picosecond ultrasonic measurements obtained on aluminum and platinum nanostructures with variable dot size and lateral periodicity which realized a 2D phononic crystal. Performing investigations at different ...
Lire la suite >We report on picosecond ultrasonic measurements obtained on aluminum and platinum nanostructures with variable dot size and lateral periodicity which realized a 2D phononic crystal. Performing investigations at different resolution scales, we have identified individual modes of vibration depending on the dot size, and mode of vibration strongly correlated with the bi-dimensional organization. The platinum dots sputtered on an aluminum layer have shown a behavior of isolated oscillators without any coupling between neighbor elements in this phononic crystal. The frequency of such normal modes, extracted from time resolved measurements are in good agreement with 3D finite element simulations. In contrast, with aluminum dot systems where the coupling is more efficient we observe a complex spectrum of vibrational modes related to the band structure induced by the bi-dimensional patterning.Lire moins >
Lire la suite >We report on picosecond ultrasonic measurements obtained on aluminum and platinum nanostructures with variable dot size and lateral periodicity which realized a 2D phononic crystal. Performing investigations at different resolution scales, we have identified individual modes of vibration depending on the dot size, and mode of vibration strongly correlated with the bi-dimensional organization. The platinum dots sputtered on an aluminum layer have shown a behavior of isolated oscillators without any coupling between neighbor elements in this phononic crystal. The frequency of such normal modes, extracted from time resolved measurements are in good agreement with 3D finite element simulations. In contrast, with aluminum dot systems where the coupling is more efficient we observe a complex spectrum of vibrational modes related to the band structure induced by the bi-dimensional patterning.Lire moins >
Langue :
Anglais
Vulgarisation :
Non
Source :