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Applications of antireflection coatings in sonic crystal-based acoustic devices |
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| Authors: | Yun WangKe Deng Shengjun XuChunyin Qiu Hai YangZhengyou Liu |
| Affiliation: | a Key Laboratory of Artificial Micro- and Nano-structures of Ministry of Education and School of Physics and Technology, Wuhan University, Wuhan 430072, China b Department of Physics, Jishou University, Jishou 416000, Hunan, China c Physics Department, Yunnan Normal University, 650092, Kunming, China |
| Abstract: | The unwanted reflection seriously baffles the practical applications of sonic crystals, such as for various acoustic lenses designed by utilizing the in-band properties of sonic crystals. Herein we introduce the concept of the antireflection coating into the sonic crystal-based devices. The efficiency of such accessorial structures is demonstrated well by an originally high reflection system. Promising perspectives can be anticipated in extending the antireflection coating layers into more general acoustic applications through a flexible design process. |
| Keywords: | Antireflection coating Sonic crystal Negative refraction |
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