Level Set-Based Topology Optimization for the Design of an Electromagnetic Cloak With Ferrite Material

被引：19

作者：

Otomori, Masaki ^{[1
]}

Yamada, Takayuki ^{[1
]}

Andkjaer, Jacob ^{[2
]}

Izui, Kazuhiro ^{[1
]}

Nishiwaki, Shinji ^{[1
]}

Kogiso, Nozomu ^{[3
]}

机构：

[1] Kyoto Univ, Dept Mech Engn & Sci, Kyoto 6068501, Japan

[2] Tech Univ Denmark, Dept Mech Engn, DK-2800 Lyngby, Denmark

[3] Osaka Prefecture Univ, Dept Aerosp Engn, Sakai, Osaka 5998531, Japan

来源：

IEEE TRANSACTIONS ON MAGNETICS | 2013年 / 49卷 / 05期

关键词：

Electromagnetic cloak; ferrite; level-set method; topology optimization;

D O I：

10.1109/TMAG.2013.2239965

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

This paper presents a structural optimization method for the design of an electromagnetic cloak made of ferrite material. Ferrite materials exhibit a frequency-dependent degree of permeability, due to a magnetic resonance phenomenon that can be altered by changing the magnitude of an externally applied dc magnetic field. Thus, such ferrite cloaks have the potential to provide novel functions, such as on-off operation in response to on-off application of an external magnetic field. The optimization problems are formulated to minimize the norm of the scattering field from a cylindrical obstacle. A level set-based topology optimization method incorporating a fictitious interface energy is used to find optimized configurations of the ferrite material. The numerical results demonstrate that the optimization successfully found an appropriate ferrite configuration that functions as an electromagnetic cloak.

引用

页码：2081 / 2084

页数：4

共 13 条

[1] Towards all-dielectric, polarization-independent optical cloaks [J].