ID | 19954 |
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Sort Key | 2
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フルテキストURL | |
著者 |
Maetani Noriaki
Graduate School of Natural Science and Technology Okayama University
Kurose Tomoyuki
Graduate School of Natural Science and Technology Okayama University
鶴田 健二
Graduate School of Natural Science and Technology Okayama University
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抄録 | The lens effect of acoustic waves in a two-dimensional (2D) phononic crystal is studied by numerical simulation based on the finite-difference time-domain (FDTD) method.
We calculate the phonon band structure of 2D phononic crystals, consisting of metal cylinders placed periodically in water. Lens effect is observed by the negative refraction of acoustic waves, which results in refocusing of the waves at the point outside the crystal. To increase the focal intensity, we introduce a 2D phononic crystal shield with a different composition of material, which returns the incident waves back to the lens via the perfect reflection. Also, the dependence on filling fraction of metal in the crystal is studied.
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出版物タイトル |
Memoirs of the Faculty of Engineering, Okayama University
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発行日 | 2010-01
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巻 | 44巻
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出版者 | Faculty of Engineering, Okayama University
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出版者(別表記) | 岡山大学工学部
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開始ページ | 7
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終了ページ | 12
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ISSN | 1349-6115
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NCID | AA12014085
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資料タイプ |
紀要論文
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OAI-PMH Set |
岡山大学
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言語 |
英語
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論文のバージョン | publisher
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NAID | |
Eprints Journal Name | mfe
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