Condensed matter systems with topological order and metamaterials with left-handed chirality have attracted recently extensive interests in the fields of physics and optics. So far the topological order and chirality of electromagnetic wave are two independent concepts, and there is no work to address their connection. Here we propose to establish the relation between the topological order in c...

It is shown that a charged particle can be trapped in a magnetic neutral sheet produced by the combination of a static magnetic field B 0 and an electromagnetic wave propagating perpendicularly to B0 with its magnetic field component parallel to B0. The neutral sheet as well as the trapped particle moves with the phase velocity ofthe wave and the trapped particle feels a constant force. Once th...

It is shown that a smooth metal film (or a plasma layer) can be made transparent for an electromagnetic wave when two identical subwavelength diffraction gratings are placed on both sides of the film. The electromagnetic wave transmission through the metal film is caused by excitation of evanescent surface waves (plasmons) and their transformation into propagating waves at the gratings. A model...

The field of radiation emission from electron beams is reviewed with special reference to work related to free-electron lasers. Different schemes o f interaction in periodic structures, electromagnetic slow-wave structures, and in transverse confining force are distinguished. Various effects and devices such as traveling wave amplifiers, Smith-Purcell radiators, Cerenkov and bremsstrahlung-free...

We consider a one-dimensional Josephson junction in a superconducting film with the thickness that is much less than the London penetration depth. We treat an electromagnetic wave propagating along this tunnel contact. We show that the electrodynamics of a Josephson junction in a thin film is nonlocal if the wave length is less than the Pearl penetration depth. We find the integro-differential ...

due to the increasing presence of electromagnetic radiation in advanced societies, investigation of the effects of this radiation on humans has attracted the interest of many researchers. the non- ionizing radiation can induce numerous effects through biomolecules in the tissue and cells. in the current study, effects of 12 hz electromagnetic waves investigated on neuronal hormone levels in rat...