Zinc thin films deposited on (n-type)silicon at 510o C with oxidation times (10,20,30,35) sec have been oxidized. by thermal diffusion method using heater instead of conventional furnace .It is found that we can get zinc oxide outoxegen and closed farneces rapidly. The electrical properties in dark show the detector shottky diode, best time to obtain 35 sec, ideality factor 3.3 a work function ...

We are presenting our recent results in development of a direct detector of submillimeter waves (bolometer) based on a microscopic power sensor coupled to an integrated antenna. An electrical NEP of 5×10 W/Hz at 0.1 K has been demonstrated in a dc measurement. A detailed description of design of a cryogenic system for optical evaluation of this detector is presented. Introduction In this report...

A novel gas proportional detector, consisting of an array of pins immersed into a cathode made out of closely packed hexagonals has been developed. The resulting geometry of the detector is 3 dimensional. Electron multiplication is limited to a region in close proximity to the tip of each pin, where the electric field decreases with distance from the pin at a rate faster than 1/r, the rate that...

In this paper, we address the problem of spectrum sensing in the presence of nonGaussian noise for cognitive radio networks. A novel Rao test based detector, which does not require any a priori knowledge about the primary user (PU) signal and channels, is proposed for the detection of a primary user in non-Gaussian noises that are molded by the generalized Gaussian distribution (GGD). The stati...

Abstract The occurrence of electrical discharges in gas detectors restricts their dynamic range and degrades performance. Among the different methods developed to mitigate discharge effects, use resistive materials detector assembly was found be very effective. In this work, we present results a comparative study Thick-GEM-based WELL-type — with without elements. We new method measure resistive...

In this paper, a new spreading technique for intensity modulation direct detection fiber-optic code-division multiple-access (FO-CDMA) communication systems is proposed. This new spreading technique is based on generalized optical orthogonal codes (OOC) with large cardinality and minimal degradation in performance when compared with a more optimum system, namely, an optical CDMA system using OO...

Let G be a simple connected graph. The generalized polarity Wiener index of G is defined as the number of unordered pairs of vertices of G whose distance is k. Some formulas are obtained for computing the generalized polarity Wiener index of the Cartesian product and the tensor product of graphs in this article.

This work presents the results from characterization of a Position-Sensitive Planar Germanium (PSPGe) detector. The PSPGe detector is double-sided orthogonal strip consisting 10x10 electrical segmentation along horizontal and vertical directions. was performed using coincidence setup between well-characterized scanning system employing positron annihilation correlation principle. consists Posit...

Recently, antiferromagnets have received revived interest due to their significant potential for developing next-generation ultrafast magnetic storage. Here we report dc spin pumping by the acoustic resonant mode in a canted easy-plane antiferromagnet {\alpha}-Fe2O3 enabled Dzyaloshinskii-Moriya interaction. Systematic angle and frequency dependent measurements demonstrate that observed signals...

A wire-to-plane discharge during the early phases of breakdown has been studied. The discharge has been modeled in a prolate spheroidal coordinate system with the wire shape taken as a hyperboloid of revolution. Four simultaneous coupled, time-dependent, nonlinear partial differential equations describe the electrical discharge. These are the conservation equations for ion and electron densitie...