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]

Journal title :

Crystals

Pages :

702

Publisher :

MDPI

Publication date :

2020-08

ISSN :

2073-4352

English keyword(s) :

phononic crystals
Lamb wave
asymmetric transmission

HAL domain(s) :

Physique [physics]
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 >

Language :

Anglais

Peer reviewed article :

Oui

Audience :

Internationale

Popular science :

Non

Collections :

• Institut d'Électronique, de Microélectronique et de Nanotechnologie (IEMN) - UMR 8520

Source :

Harvested from HAL