Angle stability appears in many forms transmission network. There are small active power oscillations which do not endanger the normal operations whereas medium and large have implications on operations. These latter kinds of some cases develop out step condition, is dangerous disturbance with serious impact network generating units. Transmission operator’s challenges obligations to treat right...

The bull's-eye structure in the terahertz (THz) frequency region has ample applications owing to its ability focus free-propagating waves into subwavelength apertures, resulting enhanced transmission, that is, extraordinary transmission. However, coupling properties have been primarily discussed terms of normal plane-wave incidence structure. In this study, we investigate multiple resonances tr...

In this study, the effect of emergence angle a source array on acoustic transmission in typical shallow sea is simulated and analyzed. The formula we derived for received signal based Normal Mode indicates that determined by beamform modes all sources samplings at receiving depth. Two characteristics optimal (OEA) are obtained explained utilizing aforementioned formula. observed distributions l...

Recently developed Critical-Angle Transmission (CAT) grating technology in combination with x-ray CCD cameras and large collecting-area focusing optics will enable a new generation of soft x-ray spectrometers with unprecedented resolving power and effective area and with at least an order of magnitude improvement in figures-of-merit for emission and absorption line detection. This technology wi...

We study the angle and frequency dependence of sound transmission through water-immersed perforated aluminum plates. Three types of resonances are found to govern the acoustic properties of the plates: lattice resonances in periodic arrays, Fabry-Perot modes of the hole cavities, and elastic Lamb modes. The last two of them are still present in random arrays and have no parallel in optical tran...

Angle insensitive color filter based on Metal-SiOx-Metal structure is proposed in this paper, which can keep the same perceived transmitted color when the incidence angle changes from 0° to 60°, especially for p-polarization light. Various silicon oxide films deposited by reaction magnetron sputtering with a tunable refractive index from 1.97 to 3.84 is introduced to meet the strict angle insen...