Jiang Wei Xiang, Cui Tie Jun, Zhou Xiao Yang, Yang Xin Mi, Cheng Qiang
State Key Laboratory of Millimeter Waves, Institute of Target Characteristics and Identification, Department of Radio Engineering, Southeast University, Nanjing 210096, People's Republic of China.
Phys Rev E Stat Nonlin Soft Matter Phys. 2008 Dec;78(6 Pt 2):066607. doi: 10.1103/PhysRevE.78.066607. Epub 2008 Dec 17.
We propose an optical transformation to bend electromagnetic waves by designing proper inhomogeneous and anisotropic materials, which are hereinafter referred to as metamaterials (MTMs). When the waveguide bends are filled with MTMs, the incident waves will pass through the bends without any reflections (for full-parameter MTMs) or with very small reflections (for simplified-parameter MTMs). When MTMs are placed in air, the incident waves will be bent to any designed directions. We also discuss the wave bending using layered homogeneous uniaxial MTMs, which can be easily realized using artificial structures.
我们提出一种光学变换方法，通过设计适当的非均匀和各向异性材料（以下称为超材料（MTM））来使电磁波弯曲。当波导弯曲处填充有超材料时，入射波将无反射地（对于全参数超材料）或仅有非常小的反射地（对于简化参数超材料）通过弯曲处。当超材料置于空气中时，入射波将被弯曲至任何设计方向。我们还讨论了使用分层均匀单轴超材料的波弯曲情况，这种超材料可以通过人工结构轻松实现。
