期刊
APPLIED PHYSICS EXPRESS
卷 10, 期 8, 页码 -出版社
IOP PUBLISHING LTD
DOI: 10.7567/APEX.10.087202
关键词
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资金
- National Science Foundation of China [61631007, 61571117, 61371035, 61401089]
- 111 Project [111-2-05]
- National Science Foundation of Jiangsu Province [BK20160878]
- NJUPT Science Foundation [NY215090)]
Recently, transformation acoustics has been widely recognized for its ability to convert the acoustic pressure field into desired spatial patterns, resulting in numerous functionalities with unique functionalities. Here, we propose and realize a two-dimensional flattened Luneburg lens using quasi-conformal mapping in the acoustic regime, allowing geometries with curved shapes to be converted into flat systems while the broadband and low-loss properties are preserved. Importantly, such an acoustic metamaterial lens is composed of purely isotropic materials that are easy to obtain via artificial structures. Our results may give rise to various applications, such as medical treatments and novel imaging systems. (C) 2017 The Japan Society of Applied Physics
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