Physical limitations on metamaterials: restrictions on scattering and absorption over a frequency interval
Author
Summary, in English
A limitation on the extinction cross section, valid for all scatterers satisfying some basic physical assumptions, is investigated. The physical limitation is obtained from the holomorphic properties of the forward scattering dyadic. The analysis focuses on the consequences for materials with negative permittivity and permeability, i.e. metamaterials. From a broadband point of view, the limitations imply that there is no fundamental difference between metamaterials and ordinary materials with respect to scattering and absorption. The analysis is illustrated by three numerical examples of metamaterials modelled by temporal dispersion.
Publishing year
2007
Language
English
Pages
7146-7151
Publication/Series
Journal of Physics D: Applied Physics
Volume
40
Issue
22
Links
Document type
Journal article
Publisher
IOP Publishing
Topic
- Electrical Engineering, Electronic Engineering, Information Engineering
Status
Published
Research group
- Electromagnetic theory
ISBN/ISSN/Other
- ISSN: 1361-6463