| Autor: |
Kyungjae Chung, Reehyang Kim, Taeyong Chang, Jonghwa Shin |
| Předmět: |
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| Zdroj: |
Applied Physics Letters; 7/11/2016, Vol. 109 Issue 2, p021114-1-021114-5, 5p, 4 Graphs |
| Abstrakt: |
We propose and prove that it is possible to decouple the electric and magnetic response of an array of conductive nanoparticles and realize a very wide range of combinations of effective permittivities and permeabilities. The principle exploits the large differences in the Thomas-Fermi screening length for longitudinal electric fields and the classical penetration depth for time-varying transverse magnetic fields. This non-resonant principle allows frequency invariance of the effective material properties with a bandwidth spanning many octaves, orders of magnitude larger than previous resonant metamaterials. An effective medium with a record-high refractive index over broadband is demonstrated as an example. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
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