Superwavelength self-healing of spoof surface sonic Airy-Talbot waves
Abstract Self-imaging phenomena for nonperiodic waves along a parabolic trajectory encompass both the Talbot effect and the accelerating Airy beams. Beyond the ability to guide waves along a bent trajectory, the self-imaging component offers invaluable advantages to lensless imaging comprising perio...
| Main Authors: | , , , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Nature Portfolio
2023-11-01
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| Series: | Nature Communications |
| Online Access: | https://doi.org/10.1038/s41467-023-43379-9 |
| _version_ | 1797452124883255296 |
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| author | Hao-xiang Li Jing-jing Liu Zhao-xian Chen Kai Wu Bin Liang Jing Yang Jian-chun Cheng Johan Christensen |
| author_facet | Hao-xiang Li Jing-jing Liu Zhao-xian Chen Kai Wu Bin Liang Jing Yang Jian-chun Cheng Johan Christensen |
| author_sort | Hao-xiang Li |
| collection | DOAJ |
| description | Abstract Self-imaging phenomena for nonperiodic waves along a parabolic trajectory encompass both the Talbot effect and the accelerating Airy beams. Beyond the ability to guide waves along a bent trajectory, the self-imaging component offers invaluable advantages to lensless imaging comprising periodic repetition of planar field distributions. In order to circumvent thermoviscous and diffraction effects, we structure subwavelength resonators in an acoustically impenetrable surface supporting spoof surface acoustic waves (SSAWs) to provide highly confined Airy-Talbot effect, extending Talbot distances along the propagation path and compressing subwavelength lobes in the perpendicular direction. From a linear array of loudspeakers, we judiciously control the amplitude and phase of the SSAWs above the structured surface and quantitatively evaluate the self-healing performance of the Airy-Talbot effect by demonstrating how the distinctive scattering patterns remain largely unaffected against superwavelength obstacles. Furthermore, we introduce a new mechanism utilizing subwavelength Airy beam as a coding/decoding degree of freedom for acoustic communication with high information density comprising robust transport of encoded signals. |
| first_indexed | 2024-03-09T15:04:15Z |
| format | Article |
| id | doaj.art-b58b58c02bb240deade60ac3e8049815 |
| institution | Directory Open Access Journal |
| issn | 2041-1723 |
| language | English |
| last_indexed | 2024-03-09T15:04:15Z |
| publishDate | 2023-11-01 |
| publisher | Nature Portfolio |
| record_format | Article |
| series | Nature Communications |
| spelling | doaj.art-b58b58c02bb240deade60ac3e80498152023-11-26T13:45:33ZengNature PortfolioNature Communications2041-17232023-11-011411710.1038/s41467-023-43379-9Superwavelength self-healing of spoof surface sonic Airy-Talbot wavesHao-xiang Li0Jing-jing Liu1Zhao-xian Chen2Kai Wu3Bin Liang4Jing Yang5Jian-chun Cheng6Johan Christensen7Key Laboratory of Modern Acoustics, MOE, Institute of Acoustics, Department of Physics, Collaborative Innovation Center of Advanced Microstructures, Nanjing UniversityKey Laboratory of Modern Acoustics, MOE, Institute of Acoustics, Department of Physics, Collaborative Innovation Center of Advanced Microstructures, Nanjing UniversityKey Laboratory of Modern Acoustics, MOE, Institute of Acoustics, Department of Physics, Collaborative Innovation Center of Advanced Microstructures, Nanjing UniversityKey Laboratory of Modern Acoustics, MOE, Institute of Acoustics, Department of Physics, Collaborative Innovation Center of Advanced Microstructures, Nanjing UniversityKey Laboratory of Modern Acoustics, MOE, Institute of Acoustics, Department of Physics, Collaborative Innovation Center of Advanced Microstructures, Nanjing UniversityKey Laboratory of Modern Acoustics, MOE, Institute of Acoustics, Department of Physics, Collaborative Innovation Center of Advanced Microstructures, Nanjing UniversityKey Laboratory of Modern Acoustics, MOE, Institute of Acoustics, Department of Physics, Collaborative Innovation Center of Advanced Microstructures, Nanjing UniversityIMDEA Materials InstituteAbstract Self-imaging phenomena for nonperiodic waves along a parabolic trajectory encompass both the Talbot effect and the accelerating Airy beams. Beyond the ability to guide waves along a bent trajectory, the self-imaging component offers invaluable advantages to lensless imaging comprising periodic repetition of planar field distributions. In order to circumvent thermoviscous and diffraction effects, we structure subwavelength resonators in an acoustically impenetrable surface supporting spoof surface acoustic waves (SSAWs) to provide highly confined Airy-Talbot effect, extending Talbot distances along the propagation path and compressing subwavelength lobes in the perpendicular direction. From a linear array of loudspeakers, we judiciously control the amplitude and phase of the SSAWs above the structured surface and quantitatively evaluate the self-healing performance of the Airy-Talbot effect by demonstrating how the distinctive scattering patterns remain largely unaffected against superwavelength obstacles. Furthermore, we introduce a new mechanism utilizing subwavelength Airy beam as a coding/decoding degree of freedom for acoustic communication with high information density comprising robust transport of encoded signals.https://doi.org/10.1038/s41467-023-43379-9 |
| spellingShingle | Hao-xiang Li Jing-jing Liu Zhao-xian Chen Kai Wu Bin Liang Jing Yang Jian-chun Cheng Johan Christensen Superwavelength self-healing of spoof surface sonic Airy-Talbot waves Nature Communications |
| title | Superwavelength self-healing of spoof surface sonic Airy-Talbot waves |
| title_full | Superwavelength self-healing of spoof surface sonic Airy-Talbot waves |
| title_fullStr | Superwavelength self-healing of spoof surface sonic Airy-Talbot waves |
| title_full_unstemmed | Superwavelength self-healing of spoof surface sonic Airy-Talbot waves |
| title_short | Superwavelength self-healing of spoof surface sonic Airy-Talbot waves |
| title_sort | superwavelength self healing of spoof surface sonic airy talbot waves |
| url | https://doi.org/10.1038/s41467-023-43379-9 |
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