Ma Hua(马华)a)†, Qu Shao-Bo(屈绍波)a), Xu Zhuo(徐卓)b), and Wang Jia-Fu(王甲富)a)
aThe College of Science, Air Force University of Engineering, Xi'an 710051, China; bElectronic Materials Research Laboratory, Key Laboratory of Ministry of Education, Xi'an Jiaotong University, Xi'an 710049, China
Abstract By making a comparison between the acoustic equations and the 2-dimensional (2D) Maxwell equations, we obtain the material parameter equations (MPE) for acoustic elliptical cylindrical cloaks. Both the theoretical results and the numerical results indicate that an elliptical cylindrical cloak can realize perfect acoustic invisibility when the spatial distributions of mass density and bulk modulus are exactly configured according to the proposed equations. The present work is the meaningful exploration of designing acoustic cloaks that are neither sphere nor circular cylinder in shape, and opens up possibilities for making complex and multiplex acoustic cloaks with simple models such as spheres, circular or elliptic cylinders.
Received: 26 June 2008
Revised: 21 August 2008
Accepted manuscript online:
Fund: Project supported by
the National Natural Science Foundation of China (Grant Nos
50632030, 10474077 and 60871027), the National Basic Research
Program of China (Grant No 2009CB613306), and The Innovation Funds
of the College of Science, Air Force Universi
Cite this article:
Ma Hua(马华), Qu Shao-Bo(屈绍波), Xu Zhuo(徐卓), and Wang Jia-Fu(王甲富) Acoustic elliptical cylindrical cloaks 2009 Chin. Phys. B 18 1123
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