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

Yong Y. Lee, Doyeol Ahn

Research output: Contribution to journalArticlepeer-review


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.

Original languageEnglish
Article number057301
JournalJapanese Journal of Applied Physics, Part 1: Regular Papers and Short Notes and Review Papers
Issue number5
StatePublished - May 2018


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