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Experimental Verification of a Negative Index of Refraction
We present experimental scattering data at microwave frequencies on a structured metamaterial that exhibits a frequency band where the effective index of refraction (n) is negative. The materialExpand
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Determination of effective permittivity and permeability of metamaterials from reflection and transmission coefficients
We analyze the reflection and transmission coefficients calculated from transfer matrix simulations on finite lengths of electromagnetic metamaterials, to determine the effective permittivity ~«! andExpand
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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 andExpand
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Single-target molecule detection with nonbleaching multicolor optical immunolabels.
We introduce and demonstrate the use of colloidal silver plasmon-resonant particles (PRPs) as optical reporters in typical biological assays. PRPs are ultrabright, nanosized optical scatterers, whichExpand
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Limitations on subdiffraction imaging with a negative refractive index slab
A planar slab of material, for which both the permittivity and permeability have the values of −1, can bring not only the propagating fields associated with a source to a focus, but can also refocusExpand
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The asymmetric lossy near-perfect lens
We extend the ideas of the perfect lens recently proposed [J.B. Pendry, Phys. Rev. Lett. 85, 3966 (2000)] to an alternative structure. We show that a slab of a medium with negative refractive indexExpand
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Direct calculation of permeability and permittivity for a left-handed metamaterial
Recently, an electromagnetic metamaterial was fabricated and demonstrated to exhibit a “left-handed” (LH) propagation band at microwave frequencies. A LH metamaterial is one characterized by materialExpand
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Ab initio numerical simulation of left-handed metamaterials: Comparison of calculations and experiments
Using numerical simulation techniques, the transmission and reflection coefficients, or S parameters, for left-handed metamaterials are calculated. Metamaterials consist of a lattice of conducting,Expand
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Left-Handed Metamaterials
The response of a material to electromagnetic radiation can be entirely characterized by the material parameters: the electrical permittivity, or e, and the magnetic permeability, or μ. The range ofExpand
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Spectral response of plasmon resonant nanoparticles with a non-regular shape.
We study the plasmon resonances of 10 (nm)--100 (nm) two-dimensional metal particles with a non-regular shape. Movies illustrate the spectral response of such particles in the optical range. ContraryExpand
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