The canonical boundary-value problem for the propagation of compound plasmon–polariton (CPP) waves, guided by a symmetric structure comprising metal film embedded in uniaxial dielectric material, was formulated and solved. In addition to unexceptional CPP waves whose field strength, decays exponentially with distance from nearest dielectric/metal interface, this can also guide exceptional field...

Conventional modeling techniques to model macromolecular solvation and its effect on binding in the framework of Poisson-Boltzmann based implicit solvent models make use of a geometrically defined surface to depict the separation of macromolecular interior (low dielectric constant) from the solvent phase (high dielectric constant). Though this simplification saves time and computational resourc...

The radar backscattering coefficient of three types of soil surfaces at observation angles (10°60°) have been calculated using integral equation model (IEM) for different values of root mean square (RMS) roughness heights and correlation lengths. The surfaces are represented by isotropic autocorrelation functions (exponential, 1.5 power and Gaussian). The dielectric constant (ε) of the soil, an...

sion we have the largest bandwidth when dealing with non unity aspect ratios and low dielectric constant. In contrast, to obtain good wave guiding ability and low radiation from discontinuities a higher dielectric constant is required. If only one of these conditions is critical we can adjust the parameters of the guide to suit that particular requirement and obtain the largest bandwidth. If al...

In this paper, we look at different possibilities and advantages of our early proposed hybrid planar and nonradiative dielectric (NRD) guide technology in the design of various millimeter-wave circuits. First of all, an overview of the NRD guide technology progress is presented. It indicates that the hybrid planar/NRD-guide (HP/NRDG) technology provides a straightforward assembly of MMIC circui...

where is the angular frequency and F/m is the dielectric constant c of vacuum. The contribution of the bulk conductivity ( ) have been here separated to any other sort of losses ( ). The problem of the electromagnetic scattering due to a dielectric slab is briefly introduced. To this aim the model shown in Fig. 1 is considered: a unit amplitude wave is incident on a dielectric slab of thick...

A new reflect-array antenna structure is proposed. This structure utilizes a perforated substrate as a reflecting surface with the lattice of different holes. The effective electric permittivity of the dielectric substrate is altered by drilling holes with different diameter and spacing, which provide an in-homogeneous dielectric layer. This in-homogeneous dielectric layer can be controlled by ...

We demonstrate the optical coupling of two cavities without light transmission through a substrate. As the all-reflective coupling component, we use a dielectric low-efficiency 3-port diffraction grating. In contrast to a conventional transmissive coupling component, such an all-reflective coupler avoids all thermal effects that are associated with light absorption in the substrate. An all-refl...

Hyperbolic metamaterials are materials in which at least one principal dielectric constant is negative. We describe the refractive index surface, and the resulting refraction effects, for a biaxial hyperbolic metamaterial, with principal dielectric constants 1 < 0, 0 < 2 = 3. In this general case the two sheets of the index surface intersect, forming conical singularities. We derive the ray des...