Lossless acoustic half-bipolar cylindrical cloak with negative-index metamaterial

被引：0
|
作者：
Lee, Yong Y. [1 ]
Ahn, Doyeol [2 ,3 ]
机构：
[1] Korea Testing Lab, Seoul 08389, South Korea
[2] Univ Seoul, Dept Elect & Comp Engn, Seoul 02504, South Korea
[3] Florida Atlantic Univ, Dept Phys, Charles E Schmidt Coll Sci, Boca Raton, FL 33431 USA
来源：
JAPANESE JOURNAL OF APPLIED PHYSICS | 2018年 / 57卷 / 05期
关键词：
EXTERNAL CLOAK;
D O I：
10.7567/JJAP.57.057301
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
A lossless acoustic half-bipolar cylindrical cloak that has an exposed bottom is considered. Here, we show that a cloak that includes a complementary region including a negative-index medium inside of the cloaking shell works in the illumination direction independently even in the presence of the exposed bottom of the structure. This is due to the fact that the phase velocity of the wave in the normal direction can be cancelled in the presence of a boundary containing a negative-index medium that reduces scattering significantly. (c) 2018 The Japan Society of Applied Physics
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页数：5
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