ARBITRARILY POLARIZED PLANE-WAVE DIFFRACTION FROM SEMI-INFINITE PERIODIC GROOVES AND ITS APPLICATION TO FINITE PERIODIC GROOVES

Simulation of Diffraction in Periodic Media with a Coupled Finite Element and Plane Wave Approach

The aim of this paper is to discuss simulation methods of diffraction of electromagnetic waves on biperiodic structures. The region with complicated structures is discretised by Nédélec Finite Elements. In the unbounded homogeneous regions above and below, a plane wave expansion containing the exact far-field pattern is applied. A consistent coupling is achieved by the method of Nitsche. By num...

Scattering from Loaded Grooves

Electromagnetic scattering from a two-dimensional groove recessed in an arbitrarily thick conducting screen is studied. The groove may be empty or loaded with a lossy material which may or may not completely fill the cavity. For the partially loaded groove, the filling material is assumed electrically dense so that the standard impedance boundary condition is applicable at the top surface of th...

Weakly-compressible SPH and Experimental modeling of periodic wave breaking on a plane slope

Breaking waves have ability to transport large quantities of sediment and significant impact on coastal structures morphology. Hence, modeling of wave breaking is an important subject in coastal and marine engineering. In this research, the periodic wave breaking process on a plane slope is studied experimentally and numerically. Laboratory experiments were conducted to record water surface ele...

Strange Grooves

Terahertz surface plasmon polaritons on a semiconductor surface structured with periodic V-grooves.

We demonstrate propagation of terahertz waves confined to a semiconductor surface that is periodically corrugated with V-shaped grooves. A one-dimensional array of V-grooves is fabricated on a highly-doped silicon surface, using anisotropic wet-etching of crystalline silicon, thereby forming a plasmonic waveguide. Terahertz time domain spectroscopy is used to characterize the propagation of wav...