Broadband Asymmetric Propagation in Pillared Meta-Plates
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...
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| Format: | Article |
| Language: | English |
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MDPI AG
2020-08-01
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| Series: | Crystals |
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| Online Access: | https://www.mdpi.com/2073-4352/10/8/702 |
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| author | Lin Chen Wei Wang Guohua Nie Yabin Jin Daniel Torrent Bahram Djafari-Rouhani |
| author_facet | Lin Chen Wei Wang Guohua Nie Yabin Jin Daniel Torrent Bahram Djafari-Rouhani |
| author_sort | Lin Chen |
| collection | DOAJ |
| description | 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. |
| first_indexed | 2024-03-10T17:26:21Z |
| format | Article |
| id | doaj.art-60ba6398e41a42dbb295e06ef518d9b9 |
| institution | Directory Open Access Journal |
| issn | 2073-4352 |
| language | English |
| last_indexed | 2024-03-10T17:26:21Z |
| publishDate | 2020-08-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Crystals |
| spelling | doaj.art-60ba6398e41a42dbb295e06ef518d9b92023-11-20T10:09:47ZengMDPI AGCrystals2073-43522020-08-0110870210.3390/cryst10080702Broadband Asymmetric Propagation in Pillared Meta-PlatesLin Chen0Wei Wang1Guohua Nie2Yabin Jin3Daniel Torrent4Bahram Djafari-Rouhani5School of Aerospace Engineering and Applied Mechanics, Tongji University, Shanghai 200092, ChinaInstitut des NanoSciences de Paris, Sorbonne Université, UPMC Université Paris 06 (INSP–UMR CNRS 7588), 4 Place Jussieu, 75005 Paris, FranceSchool of Aerospace Engineering and Applied Mechanics, Tongji University, Shanghai 200092, ChinaSchool of Aerospace Engineering and Applied Mechanics, Tongji University, Shanghai 200092, ChinaGROC-UJI, Institut de Noves Tecnologies de la Imatge, Universitat Jaume I, 12080 Castello, SpainDépartement de Physique, Institut d’Electronique, de Microélectonique et de Nanotechnologie, Université de Lille, UMR CNRS 8520, 59650 Villeneuve d’Ascq, FranceThe 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.https://www.mdpi.com/2073-4352/10/8/702phononic crystalsLamb waveasymmetric transmission |
| spellingShingle | Lin Chen Wei Wang Guohua Nie Yabin Jin Daniel Torrent Bahram Djafari-Rouhani Broadband Asymmetric Propagation in Pillared Meta-Plates Crystals phononic crystals Lamb wave asymmetric transmission |
| title | Broadband Asymmetric Propagation in Pillared Meta-Plates |
| title_full | Broadband Asymmetric Propagation in Pillared Meta-Plates |
| title_fullStr | Broadband Asymmetric Propagation in Pillared Meta-Plates |
| title_full_unstemmed | Broadband Asymmetric Propagation in Pillared Meta-Plates |
| title_short | Broadband Asymmetric Propagation in Pillared Meta-Plates |
| title_sort | broadband asymmetric propagation in pillared meta plates |
| topic | phononic crystals Lamb wave asymmetric transmission |
| url | https://www.mdpi.com/2073-4352/10/8/702 |
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