Omindirectional Non-Reciprocity via 2D Modulated Radial Sonic Crystals
In this paper we report on nonreciprocal wave propagation in a 2D radial sonic crystal with space–time varying properties. We show that a modulation traveling along the radial direction reflects in omni-directional and isotropic nonreciprocal wave propagation between inner and outer shells. The nonr...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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MDPI AG
2020-07-01
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| Series: | Crystals |
| Subjects: | |
| Online Access: | https://www.mdpi.com/2073-4352/10/7/624 |
| _version_ | 1797562098631311360 |
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| author | Davide Enrico Quadrelli Emanuele Riva Gabriele Cazzulani Francesco Braghin |
| author_facet | Davide Enrico Quadrelli Emanuele Riva Gabriele Cazzulani Francesco Braghin |
| author_sort | Davide Enrico Quadrelli |
| collection | DOAJ |
| description | In this paper we report on nonreciprocal wave propagation in a 2D radial sonic crystal with space–time varying properties. We show that a modulation traveling along the radial direction reflects in omni-directional and isotropic nonreciprocal wave propagation between inner and outer shells. The nonreciprocal behavior is verified both analytically and numerically, demonstrating that space–time radial crystals can be employed as one-way emitter or receiver of acoustic or elastic signals. |
| first_indexed | 2024-03-10T18:23:46Z |
| format | Article |
| id | doaj.art-7a5072c71cce4bfc93da291c4b215ed2 |
| institution | Directory Open Access Journal |
| issn | 2073-4352 |
| language | English |
| last_indexed | 2024-03-10T18:23:46Z |
| publishDate | 2020-07-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Crystals |
| spelling | doaj.art-7a5072c71cce4bfc93da291c4b215ed22023-11-20T07:09:14ZengMDPI AGCrystals2073-43522020-07-0110762410.3390/cryst10070624Omindirectional Non-Reciprocity via 2D Modulated Radial Sonic CrystalsDavide Enrico Quadrelli0Emanuele Riva1Gabriele Cazzulani2Francesco Braghin3Department of Mechanical Engineering, Politecnico di Milano, via La Masa 1, 20156 Milano, ItalyDepartment of Mechanical Engineering, Politecnico di Milano, via La Masa 1, 20156 Milano, ItalyDepartment of Mechanical Engineering, Politecnico di Milano, via La Masa 1, 20156 Milano, ItalyDepartment of Mechanical Engineering, Politecnico di Milano, via La Masa 1, 20156 Milano, ItalyIn this paper we report on nonreciprocal wave propagation in a 2D radial sonic crystal with space–time varying properties. We show that a modulation traveling along the radial direction reflects in omni-directional and isotropic nonreciprocal wave propagation between inner and outer shells. The nonreciprocal behavior is verified both analytically and numerically, demonstrating that space–time radial crystals can be employed as one-way emitter or receiver of acoustic or elastic signals.https://www.mdpi.com/2073-4352/10/7/624nonreciprocityacoustic dioderadial sonic crystal (RSC)spatiotemporal |
| spellingShingle | Davide Enrico Quadrelli Emanuele Riva Gabriele Cazzulani Francesco Braghin Omindirectional Non-Reciprocity via 2D Modulated Radial Sonic Crystals Crystals nonreciprocity acoustic diode radial sonic crystal (RSC) spatiotemporal |
| title | Omindirectional Non-Reciprocity via 2D Modulated Radial Sonic Crystals |
| title_full | Omindirectional Non-Reciprocity via 2D Modulated Radial Sonic Crystals |
| title_fullStr | Omindirectional Non-Reciprocity via 2D Modulated Radial Sonic Crystals |
| title_full_unstemmed | Omindirectional Non-Reciprocity via 2D Modulated Radial Sonic Crystals |
| title_short | Omindirectional Non-Reciprocity via 2D Modulated Radial Sonic Crystals |
| title_sort | omindirectional non reciprocity via 2d modulated radial sonic crystals |
| topic | nonreciprocity acoustic diode radial sonic crystal (RSC) spatiotemporal |
| url | https://www.mdpi.com/2073-4352/10/7/624 |
| work_keys_str_mv | AT davideenricoquadrelli omindirectionalnonreciprocityvia2dmodulatedradialsoniccrystals AT emanueleriva omindirectionalnonreciprocityvia2dmodulatedradialsoniccrystals AT gabrielecazzulani omindirectionalnonreciprocityvia2dmodulatedradialsoniccrystals AT francescobraghin omindirectionalnonreciprocityvia2dmodulatedradialsoniccrystals |