Electro-magnetic Wave Crystals

Reflected wave of finite circulation from magnetic photonic crystals.

We study the reflection of electromagnetic waves from a two-dimensional magnetic photonic crystal consisting of a periodic array of magnetic cylinders. At some frequencies the reflected wave is found to exhibit a strong circulation in that, locally, the angular momenta of the components are all of the same sign. As a result of this finite circulation, beams incident from different directions ex...

Electro-mechanical effects in liquid crystals

Electro-osmosis in nematic liquid crystals.

We derive a mathematical model of a nematic electrolyte based on a variational formulation of nematodynamics. We verify the model by comparing its predictions to the results of the experiments on the substrate-controlled liquid-crystal-enabled electrokinetics. In the experiments, a nematic liquid crystal confined to a thin planar cell with surface-patterned anchoring conditions exhibits electro...

Liquid Crystals for Electro-optic Applications

Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 1. Electro-Optic Response of Liquid Crystals . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 2. The Liquid Crystalline State . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 3. Physical Properties of Liquid Crystals . . . . . . . . . . . . . . . . . . . . . . ....

Ultra Wide Band Response of an Electro- Magnetic Wave Shield Based on a Diode Grid

This paper investigates Ultra Wide Band (UWB) response of a self-actuated electromagnetic wave shield based on a diode grid both in frequency and time domain. The investigation is first carried out on a shield valid for an incident wave polarized at a specific direction only, then extended to a shield effective for an incident wave polarized at an arbitrary direction. In the frequency domain, t...