Numerical Study of a near-Zero-Index Acoustic Metamaterial
This Letter studies a two-dimensional, membrane-based acoustic metamaterial with a near-zero refractive index. It yields a frequency-dependent effective density that is near-zero at a narrow frequency band centered around its first resonant frequency. This effective density results in its near-zero...
| Main Authors: | , , |
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| Other Authors: | |
| Format: | Article |
| Language: | en_US |
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Elsevier B.V.
2017
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| Online Access: | http://hdl.handle.net/1721.1/108497 https://orcid.org/0000-0001-5713-629X |
| _version_ | 1811084494803828736 |
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| author | Jing, Yun Xu, Jun Fang, Xuanlai |
| author2 | Massachusetts Institute of Technology. Department of Mechanical Engineering |
| author_facet | Massachusetts Institute of Technology. Department of Mechanical Engineering Jing, Yun Xu, Jun Fang, Xuanlai |
| author_sort | Jing, Yun |
| collection | MIT |
| description | This Letter studies a two-dimensional, membrane-based acoustic metamaterial with a near-zero refractive index. It yields a frequency-dependent effective density that is near-zero at a narrow frequency band centered around its first resonant frequency. This effective density results in its near-zero refractive index. Numerical simulations are shown which demonstrate that the phase in this metamaterial undergoes small changes, and the metamaterial functions as an angular filter such that only a wave with a near-zero incident angle can transmit. Its ability to tailor acoustic phase pattern is also discussed in this Letter. |
| first_indexed | 2024-09-23T12:51:41Z |
| format | Article |
| id | mit-1721.1/108497 |
| institution | Massachusetts Institute of Technology |
| language | en_US |
| last_indexed | 2024-09-23T12:51:41Z |
| publishDate | 2017 |
| publisher | Elsevier B.V. |
| record_format | dspace |
| spelling | mit-1721.1/1084972022-09-28T10:34:41Z Numerical Study of a near-Zero-Index Acoustic Metamaterial Jing, Yun Xu, Jun Fang, Xuanlai Massachusetts Institute of Technology. Department of Mechanical Engineering Fang, Xuanlai Xu, Jun Fang, Xuanlai This Letter studies a two-dimensional, membrane-based acoustic metamaterial with a near-zero refractive index. It yields a frequency-dependent effective density that is near-zero at a narrow frequency band centered around its first resonant frequency. This effective density results in its near-zero refractive index. Numerical simulations are shown which demonstrate that the phase in this metamaterial undergoes small changes, and the metamaterial functions as an angular filter such that only a wave with a near-zero incident angle can transmit. Its ability to tailor acoustic phase pattern is also discussed in this Letter. 2017-04-28T17:44:23Z 2017-04-28T17:44:23Z 2012-09 2012-08 Article http://purl.org/eprint/type/JournalArticle 0375-9601 http://hdl.handle.net/1721.1/108497 Jing, Yun, Jun Xu, and Nicholas X. Fang. "Numerical study of a near-zero-index acoustic metamaterial." Physics Letters A, 376:45 (1 October 2012), pp. 2834–2837. https://orcid.org/0000-0001-5713-629X en_US http://dx.doi.org/10.1016/j.physleta.2012.08.057 Physics Letters A Creative Commons Attribution-Noncommercial-Share Alike http://creativecommons.org/licenses/by-nc-sa/4.0/ application/pdf Elsevier B.V. Prof. Fang via Angie Locknar |
| spellingShingle | Jing, Yun Xu, Jun Fang, Xuanlai Numerical Study of a near-Zero-Index Acoustic Metamaterial |
| title | Numerical Study of a near-Zero-Index Acoustic Metamaterial |
| title_full | Numerical Study of a near-Zero-Index Acoustic Metamaterial |
| title_fullStr | Numerical Study of a near-Zero-Index Acoustic Metamaterial |
| title_full_unstemmed | Numerical Study of a near-Zero-Index Acoustic Metamaterial |
| title_short | Numerical Study of a near-Zero-Index Acoustic Metamaterial |
| title_sort | numerical study of a near zero index acoustic metamaterial |
| url | http://hdl.handle.net/1721.1/108497 https://orcid.org/0000-0001-5713-629X |
| work_keys_str_mv | AT jingyun numericalstudyofanearzeroindexacousticmetamaterial AT xujun numericalstudyofanearzeroindexacousticmetamaterial AT fangxuanlai numericalstudyofanearzeroindexacousticmetamaterial |