AbstractEu3+-doped ZnO submicron rod has been prepared by a hydrothermal method. Synthesized rods are characterized by X-ray diffraction, scanning electron microscopy and photoluminescence spectra (PL). The results indicated structures and morphology of rods affected by the Eu3+ doping concentration. 5D0–7FJ (J = 1, 2 and 3) of Eu3+ emission appeared, and energy transfer from the ZnO host […]
AbstractOptical response of a complex nanodimer comprising a semiconductor quantum dot via Coulomb interaction to a metal nanorod is analyzed theoretically. Optical bistability (OB) behavior of a coherently coupled exciton-plasmon (plexcitonic) hybrid system under a laser field is investigated. The bistable exciton population in a hybrid metal–semiconductor nanodimer response is shown, and it could be […]
AbstractIn the present investigation, TiO2-doped weakly polar nematic liquid crystal (NLC) has been studied. This study mainly focuses on dielectric, electro-optical and optical properties of pure NLC and doped systems. Variation in different parameters like dielectric permittivity, dielectric loss, dielectric anisotropy and conductivity has been noticed. Permittivity of the doped system is almost the same […]
AbstractIn this paper, we present a parallel algorithm for Monte Carlo simulation of the 2D Ising Model to perform efficiently on a cluster computer using MPI. We use C++ programming language to implement the algorithm. In our algorithm, every process creates a sub-lattice and the energy is calculated after each Monte Carlo iteration. Each process […]
AbstractIn the context of characterizing nitrogen-poor carbonitrides for different applications, identification of an unusual onset of spin polarization of N(p) states has been shown. A full saturation up to 3 μB is demonstrated in extended two-dimensional carbon networks of NC6 and NC12 hexagonal structures refined based on density functional theory calculations. From establishing the energy–volume equations […]
AbstractA simple spray pyrolysis technique has been used to fabricate ZnO/Mn thin films with different Mn concentrations (0, 5, 10 and 15 mol.%) for gas sensing applications. X-ray diffraction (with Cu-Kα radiation) patterns of the samples revealed the formation of single-phase wurtzite structure. The samples were characterized using field-emission scanning electron microscopy and scanning tunneling microscopy. […]
AbstractThe present study focuses on the Rayleigh equation derived in the case of a Hall thruster plasma having dust contamination, produced near the exit of the channel due to the finite divergence of the accelerated ions and the sputtering of the walls. In the presence of negatively charged dust particles, a modified form of the […]
AbstractIn the present research, the effect of variations of the electron beam voltage on the output power is studied. In order to develop the study, this problem was investigated at different frequencies, which are the products of nonlinear behavior of the traveling wave tube (TWT) in response to the input frequency. Moreover, for a more […]
AbstractThe superconducting cyclotron for proton therapy that is under design by ASIPP (Hefei, China) and JINR (Dubna, Russia) will be able to accelerate protons to the energy 200 MeV with the maximum beam current of 1 μA. The performance of superconducting magnets is the key to the superconducting cyclotron, and it will directly affect the quality […]
AbstractThe outbreak of the disease and infection in the hospital environment and medical equipment is one of the concerns of modern life. One of the effective ways for preventing and reducing the complications of infections is modification of the surface. Here, the handmade atmospheric plasma spray system is used for accumulating copper as an antibacterial […]
