Anisotropic Complementary Acoustic Metamaterial for Canceling out Aberrating Layers
In this paper, we investigate a type of anisotropic, acoustic complementary metamaterial (CMM) and its application in restoring acoustic fields distorted by aberrating layers. The proposed quasi two-dimensional (2D), nonresonant CMM consists of unit cells formed by membranes and side branches with o...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
| Published: |
American Physical Society
2014-11-01
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| Series: | Physical Review X |
| Online Access: | http://doi.org/10.1103/PhysRevX.4.041033 |
| _version_ | 1818406403723755520 |
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| author | Chen Shen Jun Xu Nicholas X. Fang Yun Jing |
| author_facet | Chen Shen Jun Xu Nicholas X. Fang Yun Jing |
| author_sort | Chen Shen |
| collection | DOAJ |
| description | In this paper, we investigate a type of anisotropic, acoustic complementary metamaterial (CMM) and its application in restoring acoustic fields distorted by aberrating layers. The proposed quasi two-dimensional (2D), nonresonant CMM consists of unit cells formed by membranes and side branches with open ends. Simultaneously, anisotropic and negative density is achieved by assigning membranes facing each direction (x and y directions) different thicknesses, while the compressibility is tuned by the side branches. Numerical examples demonstrate that the CMM, when placed adjacent to a strongly aberrating layer, could acoustically cancel out that aberrating layer. This leads to dramatically reduced acoustic field distortion and enhanced sound transmission, therefore virtually removing the layer in a noninvasive manner. In the example where a focused beam is studied, using the CMM, the acoustic intensity at the focus is increased from 28% to 88% of the intensity in the control case (in the absence of the aberrating layer and the CMM). The proposed acoustic CMM has a wide realm of potential applications, such as cloaking, all-angle antireflection layers, ultrasound imaging, detection, and treatment through aberrating layers. |
| first_indexed | 2024-12-14T09:11:24Z |
| format | Article |
| id | doaj.art-44380068b5c640f3a742edefe12f2e72 |
| institution | Directory Open Access Journal |
| issn | 2160-3308 |
| language | English |
| last_indexed | 2024-12-14T09:11:24Z |
| publishDate | 2014-11-01 |
| publisher | American Physical Society |
| record_format | Article |
| series | Physical Review X |
| spelling | doaj.art-44380068b5c640f3a742edefe12f2e722022-12-21T23:08:33ZengAmerican Physical SocietyPhysical Review X2160-33082014-11-014404103310.1103/PhysRevX.4.041033Anisotropic Complementary Acoustic Metamaterial for Canceling out Aberrating LayersChen ShenJun XuNicholas X. FangYun JingIn this paper, we investigate a type of anisotropic, acoustic complementary metamaterial (CMM) and its application in restoring acoustic fields distorted by aberrating layers. The proposed quasi two-dimensional (2D), nonresonant CMM consists of unit cells formed by membranes and side branches with open ends. Simultaneously, anisotropic and negative density is achieved by assigning membranes facing each direction (x and y directions) different thicknesses, while the compressibility is tuned by the side branches. Numerical examples demonstrate that the CMM, when placed adjacent to a strongly aberrating layer, could acoustically cancel out that aberrating layer. This leads to dramatically reduced acoustic field distortion and enhanced sound transmission, therefore virtually removing the layer in a noninvasive manner. In the example where a focused beam is studied, using the CMM, the acoustic intensity at the focus is increased from 28% to 88% of the intensity in the control case (in the absence of the aberrating layer and the CMM). The proposed acoustic CMM has a wide realm of potential applications, such as cloaking, all-angle antireflection layers, ultrasound imaging, detection, and treatment through aberrating layers.http://doi.org/10.1103/PhysRevX.4.041033 |
| spellingShingle | Chen Shen Jun Xu Nicholas X. Fang Yun Jing Anisotropic Complementary Acoustic Metamaterial for Canceling out Aberrating Layers Physical Review X |
| title | Anisotropic Complementary Acoustic Metamaterial for Canceling out Aberrating Layers |
| title_full | Anisotropic Complementary Acoustic Metamaterial for Canceling out Aberrating Layers |
| title_fullStr | Anisotropic Complementary Acoustic Metamaterial for Canceling out Aberrating Layers |
| title_full_unstemmed | Anisotropic Complementary Acoustic Metamaterial for Canceling out Aberrating Layers |
| title_short | Anisotropic Complementary Acoustic Metamaterial for Canceling out Aberrating Layers |
| title_sort | anisotropic complementary acoustic metamaterial for canceling out aberrating layers |
| url | http://doi.org/10.1103/PhysRevX.4.041033 |
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