Experimentally demonstrated an unidirectional electromagnetic cloak designed by topology optimization
Optics
2015-06-17 v1
Abstract
Electromagnetic invisible devices usually designed by transformation optics are rather complicated in material parameters and not suitable for general applications. Recently a topology optimized cloak based on level-set method was proposed to realize nearly perfect cloaking by Fujii et al [Appl. Phys. Lett. 102, 251106 (2013)]. In this work we experimentally implemented this idea and fabricated a unidirectional cloak with a relative large invisible region made of single dielectric material. Good cloaking performance was verified through measurement which consists very well with numerical simulation. The advantages and disadvantages of this optimization method are also discussed.
Cite
@article{arxiv.1308.6049,
title = {Experimentally demonstrated an unidirectional electromagnetic cloak designed by topology optimization},
author = {Lu Lan and Fei Sun and Yichao Liu and C. K. Ong and Yungui Ma},
journal= {arXiv preprint arXiv:1308.6049},
year = {2015}
}
Comments
4 figures