Journal ArticleDOI
Negative-index metamaterials from nanoapertures
Carsten Rockstuhl,Falk Lederer +1 more
TLDR
In this article, the authors introduce an approach towards the design of metamaterials where the dielectric and magnetic activity is caused by resonances in dielectoric nanocavities embedded in metal.Abstract:
We introduce an approach towards the design of metamaterials where the dielectric and magnetic activity is caused by resonances in dielectric nanocavities embedded in metal. The simplest implementation of this concept is a rectangular nanoaperture in a thin metallic stripe. We show that the electromagnetic field of the resonance eigenmodes is primarily concentrated in the dielectric medium. Even modes affect the effective permittivity, whereas odd modes evoke dispersion in the effective permeability. The negative permittivity provided by the metallic stripes allows potentially for a negative effective index near the first magnetic resonance. Advantages and disadvantages of this structure compared to metamaterials where the resonant eigenmodes are mainly localized at metallic nanoparticles are discussed.read more
Citations
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Journal ArticleDOI
Conductive Polypyrrole/Tungsten Oxide Metacomposites with Negative Permittivity
Jiahua Zhu,Suying Wei,Lei Zhang,Yuanbing Mao,Jong Eun Ryu,Pallavi Mavinakuli,Amar B. Karki,David P. Young,Zhanhu Guo +8 more
TL;DR: In this article, a quasi-three-dimensional variable range hopping (VRH) conduction mechanism is used for electron transportation in polypyrrole (PPy) nanocomposites reinforced with tungsten oxide (WO3) nanoparticles and nanorods (NRs) by a surface-initiated polymerization method.
Journal ArticleDOI
Polyaniline-tungsten oxide metacomposites with tunable electronic properties
Jiahua Zhu,Suying Wei,Lei Zhang,Yuanbing Mao,Jong Eun Ryu,Amar B. Karki,David P. Young,Zhanhu Guo +7 more
TL;DR: In this paper, a facile surface-initiated-polymerization (SIP) method was used to construct polyaniline (PANI) nanocomposites reinforced with tungsten oxide (WO3) nanoparticles and nanorods (NRs).
Journal ArticleDOI
Single Negative Metamaterials in Unstructured Polymer Nanocomposites Toward Selectable and Controllable Negative Permittivity
Bin Li,Gang Sui,Wei-Hong Zhong +2 more
Journal ArticleDOI
Babinet to the Half: Coupling of Solid and Inverse Plasmonic Structures
TL;DR: It is found that an efficient coupling between inverse and solid resonances is indeed possible, the necessary geometrical prerequisites are identified, and a novel solid-inverse plasmonic electromagnetically induced transparency (EIT) structure as well as a mixed chiral system are demonstrated.
Journal ArticleDOI
Resonances in complementary metamaterials and nanoapertures
TL;DR: Theoretically analyze the properties of metamaterials and shows that the complementary structure exhibits both a complementary spectral response and field distribution of the respective eigenmodes for complementary split-ring resonators.
References
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