Abstract
We show that using uniaxial double negative metamaterials it is possible to create bodies which optimally absorb power from all spatial harmonics of the incident fields, both propagating and evanescent. Comparing with the ideal black bodies which fully absorb only all propagating waves, these new objects appear 'infinitely more black', in the sense of the absorption efficiency. The concept is illustrated by considering infinite absorptive cylinders. The required material parameters for a conjugately matched cylindrical absorber are derived and absorption efficiency is studied numerically.
Original language | English |
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Title of host publication | 2015 9th International Congress on Advanced Electromagnetic Materials in Microwaves and Optics, METAMATERIALS 2015 |
Publisher | Institute of Electrical and Electronics Engineers Inc. |
Pages | 511-513 |
Number of pages | 3 |
ISBN (Print) | 9781479978366 |
DOIs | |
Publication status | Published - Nov 30 2015 |
Externally published | Yes |
Event | 9th International Congress on Advanced Electromagnetic Materials in Microwaves and Optics, METAMATERIALS 2015 - Oxford, United Kingdom Duration: Sep 7 2015 → Sep 12 2015 |
Other
Other | 9th International Congress on Advanced Electromagnetic Materials in Microwaves and Optics, METAMATERIALS 2015 |
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Country | United Kingdom |
City | Oxford |
Period | 9/7/15 → 9/12/15 |
Keywords
- Absorption
- Electromagnetics
- Impedance
- Mathematical model
- Metamaterials
- Optics
- Transforms
ASJC Scopus subject areas
- Electrical and Electronic Engineering
- Electronic, Optical and Magnetic Materials