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Electric-field-coupled resonators for negative permittivity metamaterials
A lithographically patterned inductive-capacitive resonator is described that has a strong electric response. This resonator can be used to construct metamaterials with desired positive or negative
Shape effects in plasmon resonance of individual colloidal silver nanoparticles
We present a systematic study of the effect of size and shape on the spectral response of individual silver nanoparticles. An experimental method has been developed that begins with the detection and
Full-wave simulations of electromagnetic cloaking structures.
Full electromagnetic simulations of the cylindrical version of this cloaking structure are reported, using ideal and nonideal electromagnetic parameters that show that the low-reflection and power-flow bending properties of the electromagnetic cloaky structure are not especially sensitive to modest permittivity and permeability variations.
Microwave transmission through a two-dimensional, isotropic, left-handed metamaterial
We present experimental data, numerical simulations, and analytical transfer-matrix calculations for a two-dimensionally isotropic, left-handed metamaterial (LHM) at X-band microwave frequencies. A
Interparticle Coupling Effects on Plasmon Resonances of Nanogold Particles
The collaborative oscillation of conductive electrons in metal nanoparticles results in a surface plasmon resonance that makes them useful for various applications including biolabeling. We
Homogenization of metamaterials by field averaging (invited paper)
Over the past several years, metamaterials have been introduced and rapidly been adopted as a means of achieving unique electromagnetic material response. In metamaterials, artificially
Probing the mechanisms of large Purcell enhancement in plasmonic nanoantennas
Plasmonic nanostructures enable spontaneous emission enhancement factors of greater than 1,000 — the largest observed to date. The orientation of dipole emitters in nanogaps plays a vital role.
Optical design of reflectionless complex media by finite embedded coordinate transformations.
This work applies finite, embedded coordinate transformations to the design of several devices, including a parallel beam shifter and a beam splitter, both of which are reflectionless and exhibit unusual electromagnetic behavior as confirmed by 2D full-wave simulations.
Reversing Light: Negative Refraction
ictor Veselago, in a paper 1 published in 1967, pondered the consequences for electromagnetic waves interacting with a hypothetical material for which both the electric permittivity, e , and the