期刊
APPLIED PHYSICS LETTERS
卷 109, 期 2, 页码 -出版社
AMER INST PHYSICS
DOI: 10.1063/1.4958987
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资金
- National Research Foundation of Korea (NRF) - Korea government (MSIP) [2013M3C1A3063598, 2014M3A6B3063708, 2008-0061893]
- National Research Foundation of Korea [2008-0061893, 2016H1A2A1906663, 2014M3A6B3063708, 2015R1A5A6001948, 2013M3C1A3063598] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
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 broad-band is demonstrated as an example. Published by AIP Publishing.
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