| 双负超颖材料中的声学界面波 |
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| 引用本文： | 张峰,刘丰铭.双负超颖材料中的声学界面波[J].人工晶体学报,2019,48(2):365-368. |
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| 作者姓名： | 张峰 刘丰铭 |
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| 作者单位： | 湖北工业大学理学院,武汉,430068;中国地质大学(武汉)数理学院,武汉,430074 |
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| 摘 要： | 声学超颖材料中可以观察到声学界面波的存在。超胞方法被用来研究这种存在于非完全禁带中的界面波的色散关系和本征场分布。进一步,等效介质理论被用来证明这种界面波模式是由声学超颖材料的双负响应引起的。通过利用这种界面波模式,可以获得用于超声成像的声学超透镜。
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| 关 键 词： | 超颖材料 界面波 超胞方法 等效介质理论 声学超透镜 |
Acoustic Interface Waves in Double-negative Metamaterials |
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| ZHANG Feng,LIU Feng-ming.Acoustic Interface Waves in Double-negative Metamaterials[J].Journal of Synthetic Crystals,2019,48(2):365-368. |
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| Authors: | ZHANG Feng LIU Feng-ming |
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| Affiliation: | (School of Science, Hubei University of Technology, Wuhan 430068, China;School of Mathematics and Physics, China University of Geosciences, Wuhan 430074, China) |
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| Abstract: | Interface waves can be observed in acoustic metamaterials. The supercell method is employed to study the dispersion relation and eigenfield distributions of the interface modes which exist in incomplete band-gaps. Further, with the application of the effective medium theory, these interface modes were induced by the double-negative responses of acoustic metamaterials. By means of the interface modes, an acoustic superlens for ultrasonic imaging can be obtained. |
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| Keywords: | acoustic metamaterial interface wave supercell method effective medium theory acoustic superlen |
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