19 Waves in Cold Plasmas: Two-Fluid Formalism 1 19.1 Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 19.2 Dielectric Tensor, Wave Equation, and General Dispersion Relation . . . . . 3 19.3 Wave Modes in an Unmagnetized Plasma . . . . . . . . . . . . . . . . . . . . 5 19.3.1 Two-Fluid Formalism . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 19.3.2 ...

We examine photonic crystals PhC made of periodic stacks of anisotropic dielectric layers with a split band edge SBE on the band diagram. Just below the band edge frequency, the dispersion relation k of SBE PhCs can be approximated as a linear combination of a quadratic term and a quartic term. This is in contrast to regular conventional band edge PhCs, which produce a quadratic dispersion rela...

This paper reports a simple approach for the design of blue-excitation-light passing and phosphor-yellow-emission-light reflecting dielectric multilayers to recycle the backward emission of Y(3)Al(5)O(12):Ce(3+) (YAG:Ce) yellow phosphors on top of a blue InGaN light-emitting diode (LED) cup. The insertion of modified quarter-wave films of alternate high- and low-refractive index dielectric film...

Functional brain imaging has tremendous applications. The existing methods for functional brain imaging include functional Magnetic Resonant Imaging (fMRI), scalp electroencephalography (EEG), implanted EEG, magnetoencephalography (MEG) and Positron Emission Tomography (PET), which have been widely and successfully applied to various brain imaging studies. To develop a new method for functional...

Plasmonic waveguides have shown the potential to guide subwavelength optical modes, the so called surface plasmon polaritons, at metal-dielectric interfaces. In particular, a metal-dielectric-metal (MDM) structure supports a subwavelength propagating mode at a wavelength range extending from DC to visible. Thus, such a waveguide could be important in providing an interface between conventional ...

21 Waves in Cold Plasmas: Two-Fluid Formalism 1 21.1 Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 21.2 Dielectric Tensor, Wave Equation, and General Dispersion Relation . . . . . 3 21.3 Two-Fluid Formalism . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 21.4 Wave Modes in an Unmagnetized Plasma . . . . . . . . . . . . . . . . . . . . 7 2...

Photonic crystals are artificial low-loss dielectric structures with periodic modulation of refractive index, which have attracted considerable attention in the last two decades. Due to Bragg reflection, electromagnetic (optical) waves cannot propagate through such structures in certain directions, at certain frequencies. Hence, photonic crystals can control the propagation of electromagnetic w...

This paper describes a novel technique which has the potential to make a significant impact on the mapping of the human brain. This technique has been designed for 3D full-wave electromagnetic simulation of waves at very low frequencies and has been applied to the problem of modeling of brain waves which can be modeled as electromagnetic waves lying in the frequency range of 0.1–100 Hz. The use...

Abstract: We derive an exact expression for the radiation pressure of a quasimonochromatic plane wave incident from the free space onto the flat surface of a semi-infinite dielectric medium. In order to account for the total optical momentum (incident plus reflected) that is transferred to the dielectric, the mechanical momentum acquired by the medium must be added to the rate of flow of the el...