Magnetic – acoustic biphysical invisible coats for underwater objects
Magnetic fields and acoustic waves are the two fundamental measures to perceive underwater objects, which, however, have never been simultaneously handled before. In this work, we propose and demonstrate a biphysical submillimeter-thick metamaterial coat that can simultaneously make underwater objec...
| Main Authors: | , , , , |
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| Other Authors: | |
| Format: | Journal Article |
| Language: | English |
| Published: |
2021
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| Subjects: | |
| Online Access: | https://hdl.handle.net/10356/147008 |
| _version_ | 1811692533610184704 |
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| author | Zhou, Yi Chen, Jian Liu, Liu Fan, Zheng Ma, Yungui |
| author2 | School of Mechanical and Aerospace Engineering |
| author_facet | School of Mechanical and Aerospace Engineering Zhou, Yi Chen, Jian Liu, Liu Fan, Zheng Ma, Yungui |
| author_sort | Zhou, Yi |
| collection | NTU |
| description | Magnetic fields and acoustic waves are the two fundamental measures to perceive underwater objects, which, however, have never been simultaneously handled before. In this work, we propose and demonstrate a biphysical submillimeter-thick metamaterial coat that can simultaneously make underwater objects invisible to both magnetic fields and acoustic waves. The conformal coat is a subtle integration of an open-cavity acoustic absorber made of a dissipative acoustic metasurface (AMS) and a bilayer magnetic cloak. Experimentally, a magnetic cloaking effect with a field disturbance ratio of <0.5% is obtained over a broad-frequency range (10–250 kHz), and the compound metamaterial coat can strongly attenuate ultrasonic waves with a near-unity absorptivity. The magnetic subcoat can be freely combined with various AMS layers to achieve a wideband acoustic stealth effect for different spectral regimes. This work may open up a new way to build multifunctional devices for various waterborne applications. |
| first_indexed | 2024-10-01T06:37:18Z |
| format | Journal Article |
| id | ntu-10356/147008 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2024-10-01T06:37:18Z |
| publishDate | 2021 |
| record_format | dspace |
| spelling | ntu-10356/1470082023-03-04T17:21:58Z Magnetic – acoustic biphysical invisible coats for underwater objects Zhou, Yi Chen, Jian Liu, Liu Fan, Zheng Ma, Yungui School of Mechanical and Aerospace Engineering Engineering::Materials Materials for Devices Soft Materials Magnetic fields and acoustic waves are the two fundamental measures to perceive underwater objects, which, however, have never been simultaneously handled before. In this work, we propose and demonstrate a biphysical submillimeter-thick metamaterial coat that can simultaneously make underwater objects invisible to both magnetic fields and acoustic waves. The conformal coat is a subtle integration of an open-cavity acoustic absorber made of a dissipative acoustic metasurface (AMS) and a bilayer magnetic cloak. Experimentally, a magnetic cloaking effect with a field disturbance ratio of <0.5% is obtained over a broad-frequency range (10–250 kHz), and the compound metamaterial coat can strongly attenuate ultrasonic waves with a near-unity absorptivity. The magnetic subcoat can be freely combined with various AMS layers to achieve a wideband acoustic stealth effect for different spectral regimes. This work may open up a new way to build multifunctional devices for various waterborne applications. Published version 2021-03-30T08:22:58Z 2021-03-30T08:22:58Z 2020 Journal Article Zhou, Y., Chen, J., Liu, L., Fan, Z. & Ma, Y. (2020). Magnetic – acoustic biphysical invisible coats for underwater objects. NPG Asia Materials, 12(1). https://dx.doi.org/10.1038/s41427-020-0209-8 1884-4057 0000-0002-1859-1211 https://hdl.handle.net/10356/147008 10.1038/s41427-020-0209-8 2-s2.0-85082400905 1 12 en NPG Asia Materials © 2020 The Author(s). This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license,and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/ application/pdf |
| spellingShingle | Engineering::Materials Materials for Devices Soft Materials Zhou, Yi Chen, Jian Liu, Liu Fan, Zheng Ma, Yungui Magnetic – acoustic biphysical invisible coats for underwater objects |
| title | Magnetic – acoustic biphysical invisible coats for underwater objects |
| title_full | Magnetic – acoustic biphysical invisible coats for underwater objects |
| title_fullStr | Magnetic – acoustic biphysical invisible coats for underwater objects |
| title_full_unstemmed | Magnetic – acoustic biphysical invisible coats for underwater objects |
| title_short | Magnetic – acoustic biphysical invisible coats for underwater objects |
| title_sort | magnetic acoustic biphysical invisible coats for underwater objects |
| topic | Engineering::Materials Materials for Devices Soft Materials |
| url | https://hdl.handle.net/10356/147008 |
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