Geometric Structure behind Duality and Manifestation of Self-Duality from Electrical Circuits to Metamaterials

Symmetry

Yoshiro Urade¹  Toshihiro Nakanishi²  Yosuke Nakata³ 

[1] Center for Emergent Matter Science, RIKEN, Wako, Saitama 351-0198, Japan;Department of Electronic Science and Engineering, Kyoto University, Kyoto 615-8510, Japan;Research Center for Advanced Science and Technology, The University of Tokyo, Meguro-ku, Tokyo 153-8904, Japan;

关键词: duality;    self-duality;    poincaré duality;    circuit duality;    keller–dykhne duality;    electromagnetic duality;    babinet’s principle;    constant-resistance circuit;    zero backscattering;    critical response;    self-complementary antenna;    metamaterials;    metasurfaces;   

DOI  :  10.3390/sym11111336

来源: DOAJ

【 摘 要 】

In electromagnetic systems, duality is manifested in various forms: circuit, Keller–Dykhne, electromagnetic, and Babinet dualities. These dualities have been developed individually in different research fields and frequency regimes, leading to a lack of unified perspective. In this paper, we establish a unified view of these dualities in electromagnetic systems. The underlying geometrical structures behind the dualities are elucidated by using concepts from algebraic topology and differential geometry. Moreover, we show that seemingly disparate phenomena, such as frequency-independent effective response, zero backscattering, and critical response, can be considered to be emergent phenomena of self-duality.

【 授权许可】

Unknown