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- Xiangdong Zhang
- Department of Physics , Beijing Normal University, Beijing 100875, People’s Republic of China
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- Zhengyou Liu
- Department of Physics , Wuhan University, Wuhan 430072, People’s Republic of China
書誌事項
- 公開日
- 2004-07-12
- DOI
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- 10.1063/1.1772854
- 公開者
- AIP Publishing
この論文をさがす
説明
<jats:p>Negative refraction of acoustic waves in two-dimensional phononic crystals has been demonstrated through both analysis and exact numerical simulation. The methods to achieve this behavior have been discussed. A microsuperlens for acoustic waves has also been designed. It is shown that refractive devices based on phononic crystals behave in a manner similar to that of optical systems. Therefore, a negative square root of the effective density or negative refraction index for acoustic waves can be introduced to describe this phenomena very well as the case of electromagnetic waves in the photonic crystals.</jats:p>
収録刊行物
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- Applied Physics Letters
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Applied Physics Letters 85 (2), 341-343, 2004-07-12
AIP Publishing