A near-perfect invisibility cloak constructed with homogeneous materials
Wei Li, Jianguo Guan, Zhigang Sun, Wei Wang, Qingjie Zhang
TL;DR
This paper presents a design for a near-perfect cylindrical invisibility cloak using homogeneous materials, achieved through a two-step coordinate transformation, with confirmed performance via numerical simulations.
Contribution
It introduces a novel two-step coordinate transformation method to create a homogeneous-material invisibility cloak with improved practicality.
Findings
The cloak achieves near-perfect invisibility with homogeneous materials.
Numerical simulations confirm the cloak's effective performance.
The scheme has a promising bandwidth for practical applications.
Abstract
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.
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