Broadband Asymmetric Propagation in Pillared ...
Document type :
Article dans une revue scientifique
DOI :
Title :
Broadband Asymmetric Propagation in Pillared Meta-Plates
Author(s) :
Chen, Lin [Auteur]
School of Aerospace Engineering and Applied Mechanics
Wang, Wei [Auteur]
Institut des Nanosciences de Paris [INSP]
Nie, Guohua [Auteur]
School of Aerospace Engineering and Applied Mechanics
Jin, Yabin [Auteur]
School of Aerospace Engineering and Applied Mechanics
Torrent, Daniel [Auteur]
Institut de Noves Tecnologies de la Imatge [INIT]
Djafari-Rouhani, Bahram [Auteur]
Physique - IEMN [PHYSIQUE - IEMN]
Institut d’Électronique, de Microélectronique et de Nanotechnologie - UMR 8520 [IEMN]
School of Aerospace Engineering and Applied Mechanics
Wang, Wei [Auteur]
Institut des Nanosciences de Paris [INSP]
Nie, Guohua [Auteur]
School of Aerospace Engineering and Applied Mechanics
Jin, Yabin [Auteur]
School of Aerospace Engineering and Applied Mechanics
Torrent, Daniel [Auteur]
Institut de Noves Tecnologies de la Imatge [INIT]
Djafari-Rouhani, Bahram [Auteur]
Physique - IEMN [PHYSIQUE - IEMN]
Institut d’Électronique, de Microélectronique et de Nanotechnologie - UMR 8520 [IEMN]
Journal title :
Crystals
Pages :
702
Publisher :
MDPI
Publication date :
2020-08
ISSN :
2073-4352
English keyword(s) :
phononic crystals
Lamb wave
asymmetric transmission
Lamb wave
asymmetric transmission
HAL domain(s) :
Physique [physics]
Sciences de l'ingénieur [physics]/Micro et nanotechnologies/Microélectronique
Sciences de l'ingénieur [physics]/Micro et nanotechnologies/Microélectronique
English abstract : [en]
The asymmetric propagation of mechanical energy across interfaces is a challenging problem with a wide range of applications. In this work, we present a novel structure presenting the asymmetric propagation of elastic waves ...
Show more >The asymmetric propagation of mechanical energy across interfaces is a challenging problem with a wide range of applications. In this work, we present a novel structure presenting the asymmetric propagation of elastic waves in thin plates in a broadband range. The structure consists of a combination of symmetrically and asymmetrically distributed pillars, so that the former decouple the different Lamb modes and the latter mix all of them. We show that a combination in tandem with these two structures can realize an efficient broadband asymmetric propagation at the subwavelength range and achieve a transmission difference larger than 200 dB between forward and backward directions. The proposed pillared meta-plate brings a new way for subwavelength and broadband wave manipulation in the fields of wave isolation, sensing and communication, among others.Show less >
Show more >The asymmetric propagation of mechanical energy across interfaces is a challenging problem with a wide range of applications. In this work, we present a novel structure presenting the asymmetric propagation of elastic waves in thin plates in a broadband range. The structure consists of a combination of symmetrically and asymmetrically distributed pillars, so that the former decouple the different Lamb modes and the latter mix all of them. We show that a combination in tandem with these two structures can realize an efficient broadband asymmetric propagation at the subwavelength range and achieve a transmission difference larger than 200 dB between forward and backward directions. The proposed pillared meta-plate brings a new way for subwavelength and broadband wave manipulation in the fields of wave isolation, sensing and communication, among others.Show less >
Language :
Anglais
Peer reviewed article :
Oui
Audience :
Internationale
Popular science :
Non
Source :
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