期刊
APPLIED PHYSICS LETTERS
卷 103, 期 7, 页码 -出版社
AMER INST PHYSICS
DOI: 10.1063/1.4818716
关键词
-
资金
- Direction Generale de l'Armement (DGA)
- ERC
- Agence Nationale de la Recherche [12-BS09-003-01]
- LABEX WIFI (Laboratory of Excellence within the French Program Investments for the Future) [ANR-10-IDEX-0001-02 PSL*]
The ability of left-handed materials to overcome the diffraction limit was first considered as one of the most exciting and challenging outcomes of the negative refraction concept. Flat lens focusing of elastic waves is, however, a challenge. We demonstrate broadband focusing of elastic waves at 10 kHz carrier frequency, below the first stop band, in a 45 degrees-tilted square array of circular air holes perforated in a Duraluminium thin plate. By adjusting the relative thickness of the outer plate we achieve large-angle negative refraction with diffraction-limited lateral resolution. We find good agreement with a simple beam-lattice model and finite-difference time-domain simulations. (C) 2013 AIP Publishing LLC.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据