Phonons in Slow Motion: Dispersion Relations ...
Document type :
Compte-rendu et recension critique d'ouvrage
DOI :
Title :
Phonons in Slow Motion: Dispersion Relations in Ultra-Thin Si Membranes
Author(s) :
Cuffe, John [Auteur]
Chavez, Emigdio [Auteur]
Shchepetov, Andrey [Auteur]
Chapuis, Pierre-Olivier [Auteur]
El Boudouti, El Houssaine [Auteur]
Alzina, Francesc [Auteur]
Kehoe, Timothy [Auteur]
Gomis-Bresco, Jordi [Auteur]
Dudek, Damian [Auteur]
Pennec, Yan [Auteur]
Djafari-Rouhani, Bahram [Auteur]
Prunnila, Mika [Auteur]
Ahopelto, Jouni [Auteur]
Torres, Clivia. M. Sotomayor [Auteur]
Chavez, Emigdio [Auteur]
Shchepetov, Andrey [Auteur]
Chapuis, Pierre-Olivier [Auteur]
El Boudouti, El Houssaine [Auteur]
Alzina, Francesc [Auteur]
Kehoe, Timothy [Auteur]
Gomis-Bresco, Jordi [Auteur]
Dudek, Damian [Auteur]
Pennec, Yan [Auteur]

Djafari-Rouhani, Bahram [Auteur]

Prunnila, Mika [Auteur]
Ahopelto, Jouni [Auteur]
Torres, Clivia. M. Sotomayor [Auteur]
Journal title :
Nano Letters
Pages :
3569-3573
Publisher :
American Chemical Society
Publication date :
2012
ISSN :
1530-6984
HAL domain(s) :
Physique [physics]/Matière Condensée [cond-mat]/Autre [cond-mat.other]
English abstract : [en]
We report the changes in dispersion relations of hypersonic acoustic phonons in free-standing silicon membranes as thin as \sim 8 nm. We observe a reduction of the phase and group velocities of the fundamental flexural ...
Show more >We report the changes in dispersion relations of hypersonic acoustic phonons in free-standing silicon membranes as thin as \sim 8 nm. We observe a reduction of the phase and group velocities of the fundamental flexural mode by more than one order of magnitude compared to bulk values. The modification of the dispersion relation in nanostructures has important consequences for noise control in nano and micro-electromechanical systems (MEMS/NEMS) as well as opto-mechanical devices.Show less >
Show more >We report the changes in dispersion relations of hypersonic acoustic phonons in free-standing silicon membranes as thin as \sim 8 nm. We observe a reduction of the phase and group velocities of the fundamental flexural mode by more than one order of magnitude compared to bulk values. The modification of the dispersion relation in nanostructures has important consequences for noise control in nano and micro-electromechanical systems (MEMS/NEMS) as well as opto-mechanical devices.Show less >
Language :
Anglais
Popular science :
Non
Comment :
5 pages
Source :
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