Time-resolved vibrations of two-dimensional hypersonic phononic crystals

Robillard, Jean-François; Devos, Arnaud; Roch-Jeune, I.

Document type :

Compte-rendu et recension critique d'ouvrage

DOI :

10.1103/PhysRevB.76.092301

Title :

Time-resolved vibrations of two-dimensional hypersonic phononic crystals

Author(s) :

Robillard, Jean-François [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]
Roch-Jeune, I. [Auteur]
Institut d’Électronique, de Microélectronique et de Nanotechnologie - UMR 8520 [IEMN]

Journal title :

Physical Review B: Condensed Matter and Materials Physics (1998-2015)

Pages :

092301

Publisher :

American Physical Society

Publication date :

2007

ISSN :

1098-0121

HAL domain(s) :

Physique [physics]/Mécanique [physics]/Acoustique [physics.class-ph]

English abstract : [en]

We fabricate e-beam lithographied two-dimensional lattices of nanometric metal cubes of various sizes and lattice parameters. Using ultrafast laser acoustics, we time resolve two kinds of vibrations in such crystals: ...
Show more >We fabricate e-beam lithographied two-dimensional lattices of nanometric metal cubes of various sizes and lattice parameters. Using ultrafast laser acoustics, we time resolve two kinds of vibrations in such crystals: individual cube vibrations and lower frequencies strongly dependent on the lattice parameter. From complementary experiments and an analytical model, we assign these modes to acoustic collective vibrations (i.e., acoustic phonons) of the artificial crystal. Their unprecedented detection takes advantage of another periodicity effect acting on the optical field.Show less >

Language :

Anglais

Popular science :

Non

Collections :