Space-time acoustic coding metasurfaces with scattering reduction characteristics
Summary: In recent years, constructing space-time joint modulation acoustic metasurfaces with harmonic manipulation capabilities to achieve excellent scattering reduction within three-dimensional (3D) space has remained a significant challenge. Here, space-time acoustic coding metasurfaces (STAMs) w...
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| Format: | Article |
| Language: | English |
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Elsevier
2025-05-01
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| Series: | iScience |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2589004225006637 |
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| author | Sheng He Wenkang Cao Kaiping Nie Jinsong Ye Jie Hu Liting Wu |
| author_facet | Sheng He Wenkang Cao Kaiping Nie Jinsong Ye Jie Hu Liting Wu |
| author_sort | Sheng He |
| collection | DOAJ |
| description | Summary: In recent years, constructing space-time joint modulation acoustic metasurfaces with harmonic manipulation capabilities to achieve excellent scattering reduction within three-dimensional (3D) space has remained a significant challenge. Here, space-time acoustic coding metasurfaces (STAMs) with harmonic manipulation in 3D space are demonstrated, which consist of two types of sub-wavelength unit cells. By changing acoustic impedance of proposed unit cells, the phase difference between these unit cells can maintain 180° in the operation frequency. Both theoretical calculations and numerical simulations verified that compared with acoustic coding metasurfaces of the same size with spatial coding sequence M1(0000 …), the maximum sound pressure level (SPL) of the STAM can decrease about 22 dB. The proposed space-time joint modulation mechanism can provide a method for achieving flexible acoustic wavefront manipulation, which has potential applications in acoustic stealth technology, noise control, and other relevant applications. |
| format | Article |
| id | doaj-art-07c9862e2b6f47ddbaa49b6aa574e457 |
| institution | DOAJ |
| issn | 2589-0042 |
| language | English |
| publishDate | 2025-05-01 |
| publisher | Elsevier |
| record_format | Article |
| series | iScience |
| spelling | doaj-art-07c9862e2b6f47ddbaa49b6aa574e4572025-08-20T03:13:48ZengElsevieriScience2589-00422025-05-0128511240210.1016/j.isci.2025.112402Space-time acoustic coding metasurfaces with scattering reduction characteristicsSheng He0Wenkang Cao1Kaiping Nie2Jinsong Ye3Jie Hu4Liting Wu5School of Mechanical Engineering, Guizhou University, Guiyang 550025, ChinaSchool of Mechanical Engineering, Guizhou University, Guiyang 550025, China; Corresponding authorSchool of Mechanical Engineering, Guizhou University, Guiyang 550025, ChinaSchool of Mechanical Engineering, Guizhou University, Guiyang 550025, ChinaSchool of Mechanical Engineering, Guizhou University, Guiyang 550025, China; Corresponding authorSchool of Information and Communication Engineering, Nanjing Institute of Technology, Nanjing 211167, ChinaSummary: In recent years, constructing space-time joint modulation acoustic metasurfaces with harmonic manipulation capabilities to achieve excellent scattering reduction within three-dimensional (3D) space has remained a significant challenge. Here, space-time acoustic coding metasurfaces (STAMs) with harmonic manipulation in 3D space are demonstrated, which consist of two types of sub-wavelength unit cells. By changing acoustic impedance of proposed unit cells, the phase difference between these unit cells can maintain 180° in the operation frequency. Both theoretical calculations and numerical simulations verified that compared with acoustic coding metasurfaces of the same size with spatial coding sequence M1(0000 …), the maximum sound pressure level (SPL) of the STAM can decrease about 22 dB. The proposed space-time joint modulation mechanism can provide a method for achieving flexible acoustic wavefront manipulation, which has potential applications in acoustic stealth technology, noise control, and other relevant applications.http://www.sciencedirect.com/science/article/pii/S2589004225006637physicsAcoustics |
| spellingShingle | Sheng He Wenkang Cao Kaiping Nie Jinsong Ye Jie Hu Liting Wu Space-time acoustic coding metasurfaces with scattering reduction characteristics iScience physics Acoustics |
| title | Space-time acoustic coding metasurfaces with scattering reduction characteristics |
| title_full | Space-time acoustic coding metasurfaces with scattering reduction characteristics |
| title_fullStr | Space-time acoustic coding metasurfaces with scattering reduction characteristics |
| title_full_unstemmed | Space-time acoustic coding metasurfaces with scattering reduction characteristics |
| title_short | Space-time acoustic coding metasurfaces with scattering reduction characteristics |
| title_sort | space time acoustic coding metasurfaces with scattering reduction characteristics |
| topic | physics Acoustics |
| url | http://www.sciencedirect.com/science/article/pii/S2589004225006637 |
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