Modulation of Surface Elastic Waves and Surface Acoustic Waves by Acoustic–Elastic Metamaterials
Metamaterials enable the modulation of elastic waves or acoustic waves in unprecedented ways and have a wide range of potential applications. This paper achieves the simultaneous manipulation of surface elastic waves (SEWs) and surface acoustic waves (SAWs) using two-dimensional acousto-elastic meta...
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MDPI AG
2024-11-01
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| author | Chang Fu Tian-Xue Ma |
| author_facet | Chang Fu Tian-Xue Ma |
| author_sort | Chang Fu |
| collection | DOAJ |
| description | Metamaterials enable the modulation of elastic waves or acoustic waves in unprecedented ways and have a wide range of potential applications. This paper achieves the simultaneous manipulation of surface elastic waves (SEWs) and surface acoustic waves (SAWs) using two-dimensional acousto-elastic metamaterials (AEMMs). The proposed AEMMs are composed of periodic hollow cylinders on the surface of a semi-infinite substrate. The band diagrams and the frequency responses of the AEMMs are numerically calculated through the finite element approach. The band diagrams exhibit simultaneous bandgaps for the SEWs and SAWs, which can also be effectively tuned by the modification of AEMM geometry. Furthermore, we construct the AEMM waveguide by the introduction of a line defect and hence demonstrate its ability to guide the SEWs and SAWs simultaneously. We expect that the proposed AEMMs will contribute to the development of multi-functional wave devices, such as filters for dual waves in microelectronics or liquid sensors that detect more than one physical property. |
| format | Article |
| id | doaj-art-6bb2e26f8964430daf44f6644530c4ca |
| institution | Kabale University |
| issn | 2073-4352 |
| language | English |
| publishDate | 2024-11-01 |
| publisher | MDPI AG |
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| series | Crystals |
| spelling | doaj-art-6bb2e26f8964430daf44f6644530c4ca2024-11-26T17:58:47ZengMDPI AGCrystals2073-43522024-11-01141199710.3390/cryst14110997Modulation of Surface Elastic Waves and Surface Acoustic Waves by Acoustic–Elastic MetamaterialsChang Fu0Tian-Xue Ma1Department of Mechanics, School of Physical Sciences and Engineering, Beijing Jiaotong University, Beijing 100044, ChinaDepartment of Mechanics, School of Physical Sciences and Engineering, Beijing Jiaotong University, Beijing 100044, ChinaMetamaterials enable the modulation of elastic waves or acoustic waves in unprecedented ways and have a wide range of potential applications. This paper achieves the simultaneous manipulation of surface elastic waves (SEWs) and surface acoustic waves (SAWs) using two-dimensional acousto-elastic metamaterials (AEMMs). The proposed AEMMs are composed of periodic hollow cylinders on the surface of a semi-infinite substrate. The band diagrams and the frequency responses of the AEMMs are numerically calculated through the finite element approach. The band diagrams exhibit simultaneous bandgaps for the SEWs and SAWs, which can also be effectively tuned by the modification of AEMM geometry. Furthermore, we construct the AEMM waveguide by the introduction of a line defect and hence demonstrate its ability to guide the SEWs and SAWs simultaneously. We expect that the proposed AEMMs will contribute to the development of multi-functional wave devices, such as filters for dual waves in microelectronics or liquid sensors that detect more than one physical property.https://www.mdpi.com/2073-4352/14/11/997metamaterialsurface elastic wavessurface acoustic waveswaveguide |
| spellingShingle | Chang Fu Tian-Xue Ma Modulation of Surface Elastic Waves and Surface Acoustic Waves by Acoustic–Elastic Metamaterials Crystals metamaterial surface elastic waves surface acoustic waves waveguide |
| title | Modulation of Surface Elastic Waves and Surface Acoustic Waves by Acoustic–Elastic Metamaterials |
| title_full | Modulation of Surface Elastic Waves and Surface Acoustic Waves by Acoustic–Elastic Metamaterials |
| title_fullStr | Modulation of Surface Elastic Waves and Surface Acoustic Waves by Acoustic–Elastic Metamaterials |
| title_full_unstemmed | Modulation of Surface Elastic Waves and Surface Acoustic Waves by Acoustic–Elastic Metamaterials |
| title_short | Modulation of Surface Elastic Waves and Surface Acoustic Waves by Acoustic–Elastic Metamaterials |
| title_sort | modulation of surface elastic waves and surface acoustic waves by acoustic elastic metamaterials |
| topic | metamaterial surface elastic waves surface acoustic waves waveguide |
| url | https://www.mdpi.com/2073-4352/14/11/997 |
| work_keys_str_mv | AT changfu modulationofsurfaceelasticwavesandsurfaceacousticwavesbyacousticelasticmetamaterials AT tianxuema modulationofsurfaceelasticwavesandsurfaceacousticwavesbyacousticelasticmetamaterials |