In the present paper, a theoretical analysis for predicting the effect of temperature on the performance of a fiber optic SPR sensor has been carried out. The sensor configuration is a three layer Krestchmann configuration consisting of fiber core, thin metallic layer, and bulk sensing layer. The optical fiber considered is a multimoded fiber. The effect of temperature is included in terms of t...

In this research a layer of Ni-Cu-P was deposited on 304 stainless steels by using gelatin and thiourea as additives in a sulfate solution. In order to determine the properties of deposited layers, a microhardness tester was used for microhardness measurement, X.R.D. for microstructural analysis, and a scanning electron microscope equipped with E.D.X. for determining morphology and analyzing th...

The effects of including incoherent (bound-electron) and coherent (Rayleigh) scattering in exposure buildup factor calculations for point isotropic gamma ray sources, penetrating a two-layer water-lead shield have been investigated in the gamma ray energy (E?) range of 40 keV to 3 MeV. Incoherent scattering decreases the values of these factors in both layers up to E? ~ 200 keV and the effect i...

[1] We investigate the ionospheric conditions required to explain Mars Express Mars Advanced Radar for Subsurface and Ionosphere Sounding topside radar sounder observations of ionospheric attenuation in excess of 13 dB at 5 MHz during solar energetic particle events. We develop theoretical expressions for the attenuation caused by a layer of ionospheric plasma in cases of high, intermediate, an...

Abstract In this work, we present a highly effective and scalable design strategy of triboelectric-piezoelectric hybrid array three cantilever beams stacked over each other (wideband operation regime), which can also be rotated around their mean position to vibrate freely without impacting any layer (narrowband regime). Contrary unique frequency response exhibited by conventional devices, the p...