Directional Acoustic Bulk Waves in a 2D ...
Document type :
Compte-rendu et recension critique d'ouvrage
DOI :
Permalink :
Title :
Directional Acoustic Bulk Waves in a 2D Phononic Crystal
Author(s) :
Deymier, Pierre [Auteur]
University of Arizona
Vasseur, Jérôme [Auteur]
Acoustique - IEMN [ACOUSTIQUE - IEMN]
Runge, Keith [Auteur]
University of Arizona
Muralidharan, Krishna [Auteur]
Khanikaev, Alexander [Auteur]
City University of New York [New York] [CUNY]
Alù, Andrea [Auteur]
City University of New York [New York] [CUNY]
University of Arizona
Vasseur, Jérôme [Auteur]

Acoustique - IEMN [ACOUSTIQUE - IEMN]
Runge, Keith [Auteur]
University of Arizona
Muralidharan, Krishna [Auteur]
Khanikaev, Alexander [Auteur]
City University of New York [New York] [CUNY]
Alù, Andrea [Auteur]
City University of New York [New York] [CUNY]
Journal title :
Crystals
Pages :
674
Publisher :
MDPI
Publication date :
2024
ISSN :
2073-4352
English keyword(s) :
phononic crystal
directional waves
topological acoustics
directional waves
topological acoustics
HAL domain(s) :
Physique [physics]/Mécanique [physics]/Acoustique [physics.class-ph]
Physique [physics]/Mécanique [physics]/Mécanique des matériaux [physics.class-ph]
Physique [physics]/Mécanique [physics]/Mécanique des matériaux [physics.class-ph]
English abstract : [en]
We used the transfer matrix method to investigate the conditions supporting the existence of directional bulk waves in a two-dimensional (2D) phononic crystal. The 2D crystal was a square lattice of unit cells composed of ...
Show more >We used the transfer matrix method to investigate the conditions supporting the existence of directional bulk waves in a two-dimensional (2D) phononic crystal. The 2D crystal was a square lattice of unit cells composed of rectangular subunits constituted of two different isotropic continuous media. We established the conditions on the geometry of the phononic crystal and its constitutive media for the emergence of waves, which, for the same handedness, exhibited a non-zero amplitude in one direction within the crystal’s 2D Brillouin zone and zero amplitude in the opposite direction. Due to time-reversal symmetry, the crystal supported propagation in the reverse direction for the opposite handedness. These features may enable robust directional propagation of bulk acoustic waves and topological acoustic technology.Show less >
Show more >We used the transfer matrix method to investigate the conditions supporting the existence of directional bulk waves in a two-dimensional (2D) phononic crystal. The 2D crystal was a square lattice of unit cells composed of rectangular subunits constituted of two different isotropic continuous media. We established the conditions on the geometry of the phononic crystal and its constitutive media for the emergence of waves, which, for the same handedness, exhibited a non-zero amplitude in one direction within the crystal’s 2D Brillouin zone and zero amplitude in the opposite direction. Due to time-reversal symmetry, the crystal supported propagation in the reverse direction for the opposite handedness. These features may enable robust directional propagation of bulk acoustic waves and topological acoustic technology.Show less >
Language :
Anglais
Popular science :
Non
Source :
Submission date :
2024-09-07T03:16:15Z
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