Related Experiment Video
Updated: Jun 25, 2026

Fabrication and Operation of a Nano-Optical Conveyor Belt
Published on: August 26, 2015
Invisible cloak design with controlled constitutive parameters and arbitrary shaped boundaries through Helmholtz's
Xi Chen1, Yunqi Fu, Naichang Yuan
1College of Electronic Science and Engineering, National University of Defense Technology, ChangSha 410073, PR China. morningsun_714@126.com
Abstract:
An approach to design an invisible cloak with controlled constitutive parameters and arbitrary shaped boundaries is presented. Helmholtz's equation is adopted to establish a mapping between original and transformed coordinates inside the cloak. Then the constitutive parameters are obtained by the established mapping. The analytical solution of a regular cloak and the numerical solution of an irregular cloak both verify that that our method will guide electromagnetic wave efficiently and control the constitutive parameters of the cloak conveniently. It has great significance in realizing a cloak practically.
Related Concept Videos
Boundary Conditions for Current Density
Electrostatic Boundary Conditions
The surface integral of an electric field is given by Gauss's law in integral form and is related to...
Generalized Hooke's Law
Conservation of Mass in Finite Cotrol Volume
A system is defined as a collection of unchanging contents, and the conservation of mass states that a system's mass is constant.
Conservation of Mass in Fixed, Nondeforming Control Volume
In the case of a sewer pipe, which can be modeled...
Magnetostatic Boundary Conditions
