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In this letter, a potential way to wirelessly transmit power and information simultaneously assembled by ultra-subwavelength magnetic metamaterials (MMs) is proposed. Time-domain experiments are performed to express the ability of manipulation of the magnetic field by MMs. The results demonstrate that MMs possess strong power for widening frequency bandwidth on transferring information. Meanwhile...
We propose a novel infrared nanofilter of localized enhanced field with multiband resonant frequencies. Compared to the resonant wavelength, the structure size is very subwavelength. We establish the effective medium theory to illustrate the light field distribution of the fractals. The loss factor is used to retrieve relative permittivity which is utilized to reproduce of reflection and transmission...
We investigate the impact of rotational symmetry of the metamaterial perfect absorber on its performance. The calculated results show that a absorption peak appears at the same wavelength in the absorption spectrum no matter the polarization of the incident light parallels to x axis or y axis when the absorber possesses four-fold rotational symmetry. However, in the case of two-fold rotational symmetry,...
Using the broadband “super-singularity” in the density of states of (meta) materials with hyperbolic dispersion, we demonstrate, both theoretically and experimentally, a new concept of radiation-absorbing systems.
Taking advantage of the broadband “super-singularity” in the density of states of hyperbolic metamaterials, we develop a new approach to radiation-absorbing systems and present an experimental realization of this concept.
In the metamaterial with hyperbolic dispersion, we have observed six-fold reduction of the emission life-time of dye deposited onto the metamaterial's surface.
A new strategy to realize negative permittivity at infrared region without metamaterials was demonstrated based on intrinsic polar lattice vibration of crystals. The dependence of the dielectric properties on composition of Ca1-xSrxF2 solid solution was measured. The region of the negative permittivity mainly relied on the effective parameters of the cation and the anion consisted of the material...
We have demonstrated bulk (51 mum thick) photonic metamaterial based on anodized alumina membranes filled with silver. The material is highly anisotropic and follows the hyperbolic dispersion law at lambda>0.84 mum.
We propose to use silver/gold sandwich structures to combine the advantages of silver and gold - two materials of choice for nanoplasmonics and metamaterials. We report on the preparation, characterization, and theoretical modeling of the proposed system.
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