Li Wei, Guan Jianguo, Sun Zhigang, Wang Wei, Zhang Qingjie
State Key Lab of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Wuhan 430070, China.
Opt Express. 2009 Dec 21;17(26):23410-6. doi: 10.1364/OE.17.023410.
A near-perfect, non-singular cylindrical invisibility cloak with diamond cross section is achieved by a two-step coordinate transformation. A small line segment is stretched and then blown up into a diamond space, and finally the cloak consisting of four kinds and eight blocks of homogeneous transformation media is obtained. Numerical simulations confirm the well performance of the cloak. The operation bandwidth of the cloak is also investigated. Our scheme is promising to create a simple and well-performed cloak in practice.
通过两步坐标变换实现了一种具有菱形横截面的近乎完美的非奇异圆柱形隐身斗篷。一小段线段先被拉伸，然后扩展成一个菱形空间，最终得到了由四种八块均匀变换介质组成的隐身斗篷。数值模拟证实了该隐身斗篷的良好性能。还研究了隐身斗篷的工作带宽。我们的方案有望在实际中制造出一种简单且性能良好的隐身斗篷。
