Research Laboratory of Electronics, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA.
Opt Lett. 2010 Aug 15;35(16):2681-3. doi: 10.1364/OL.35.002681.
We propose multilayer cylindrical invisibility cloaks that are optimized for oblique incidences through a combination of analytic formalism of scattering and genetic optimization. We show that by using only four layers of homogeneous and anisotropic metamaterials without large values of constitutive parameters, the scattering for oblique incidences can be reduced by 2 orders. Although the optimization is done at a single incident angle, the cloak provides reduced scattering over a large range of incident angles.
我们提出了一种多层圆柱隐身斗篷，通过散射的解析形式和遗传优化的组合，对斜入射进行了优化。我们表明，仅使用四层均匀各向异性超材料，而不使用大的本构参数值，就可以将斜入射的散射降低 2 个数量级。虽然优化是在单个入射角下进行的，但该斗篷在很大的入射角范围内都能提供低散射。
