期刊
JOURNAL OF APPLIED PHYSICS
卷 116, 期 22, 页码 -出版社
AMER INST PHYSICS
DOI: 10.1063/1.4903972
关键词
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资金
- Agence Nationale de la Recherche
- Direction Generale de l'Armement under project Metactif [ANR-11-ASTR-015]
Different omnidirectional refractive devices for flexural waves in thin plates are proposed and numerically analyzed. Their realization is explained by means phononic crystal plates, where a previously developed homogenization theory is employed for the design of graded index refractive devices. These devices consist of a circular cluster of inclusions with a properly designed gradient in their radius. With this approach, the Luneburg and Maxwell lenses and a family of beam splitters for flexural waves are proposed and analyzed. Results show that these devices work properly in a broadband frequency region, being therefore an efficient approach for the design of refractive devices specially interesting for nano-scale applications. (C) 2014 AIP Publishing LLC.
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