Au and Ag are known to be metallic and none of them have shown independently superconductivity. Here we show superconductivity in Ag implanted Au thin films. Ag implanted Au films of different thicknesses have been studied using four probe resistance versus temperature measurements. We have also measured the pristine samples (i.e. without any implantation) to compare the transport properties. The superconducting

In this study, the hydrothermal method is used for the synthesis of Vanadium pentoxide (V2O5) microstructure. Analysis stands for the growth of microstructure in only the orthorhombic phase. The dot pattern in SAED image shows the crystalline nature of microstructure. Raman analysis shows the layered structure of V2O5. The morphological study of V2O5 shows the flower-like microstructure formed by nanorods

In this article, the structural, micro-structural, and temperature-frequency dependence of electrical characteristics of double perovskite (BaSr)FeMoO6 have been reported. The compound crystalizes in cubic symmetry with lattice parameter a = 7.9280 (2) Å, and V = 245.95 (Å)3. The micro-structural study suggests the uniform distribution of grains on its surface with small voids. The obtained high dielectric

In the presented study, firstly the microstructural features of the PVP-Cu2Te interlayer was evaluated by employing XRD and SEM approaches and the PVP-Cu2Te is formed on the p-Si wafer. Secondly, both the forward and reverse biases current-voltage and capacitance/conductance-frequency characteristics of the prepared Al/p-Si (MS) and Al/(PVP-Cu2Te)/p-Si (MPS) structures have been analyzed to compare

The Miedema's model is a phenomenology for studying the thermodynamics of transition binary metals. In this paper, the magnetron sputtering non-equilibrium Miedema's model was constructed by using the single atomic collision theory. The Gibbs free energy diagrams of the crystalline and amorphous phase of the Ag-Mo system were calculated by using this model, the curves were convex and were greater than

In order to reveal the operating characteristics of the pumpjet propulsor, standard k–𝜀, standard k–ω, RNG k–𝜀 and SST k–ω turbulence models were used to conduct steady calculation for the whole flow channels. By comparing the calculation results with experimental data, it was found that the calculation errors were very large in some operating conditions. Therefore, the uncertainty analysis was carried

The two-dimensional (2D) turbulent thermal convection is numerically investigated by using Lattice Boltzmann Method. The 2D turbulence is considered as 2D channel flow where the flow is forced by the arrays of adiabatic cylinders placed in the inlet and wall boundary of 2D channel, which is heated uniformly from the inlet as to inspire the paradigmatic motion of thermal convection. It is found that

Unsteady cavitating turbulent flow around a NACA66 hydrofoil was simulated using a mass transfer cavitation model and a modified filter-based turbulence model in this paper. The modified filter-based turbulence model can accurately predict the pressure coefficient in midplane and shedding frequency of the unsteady cloud cavitation than standard κ–𝜀 model and filter-based turbulence model. The time

The evolution of strongly dispersive internal solitary waves (ISWs) over slope-shelf topography is studied in a two-layer system of finite depth. We consider the high-order vmeKdV model extending the Korteweg-de Vries (KdV) equation with coupling terms of O(μ𝜀) order to treat the strong dispersion in the problem which has variable coefficients to adapt the varying bottom topography. The strongly dispersive

We use the Chern–Simons action for a 𝕊𝕆(3)-connection for the description of point disclinations in the geometric theory of defects. The most general spherically symmetric 𝕊𝕆(3)-connection with zero curvature is found. The corresponding orthogonal spherically symmetric 𝕊𝕆(3) matrix and n-field are computed. Two examples of point disclinations are described.

Poisson’s ratios of two-dimensional (2D) all-inorganic perovskites Cs2PbX4 (X = Cl, Br, I) have been calculated by the first-principles calculations. The contribution of each geometric parameter (bond length L, bond angle Φ, rotation angle 𝜃1, and tilt angle 𝜃2) to Poisson’s ratio is obtained analytically. Through a comprehensive analysis of the geometric deformations of the perovskite under the

Herein propose a high performance dye sensitized solar cell based terbium (Tb) doped barium titanate (BaTiO3) thin films prepared by three different techniques such as chemical bath deposition method (CBD), screen printing (SP) and spray pyrolysis coating (SPC) techniques respectively. XRD, SEM and HRTEM results suggest that tetragonal phase of BaTiO3 with three different morphologies like spherical

Over the last two decades, various methods have been developed for surface modification of Mg alloys among which plasma electrolytic oxidation (PEO) is one of the most effective methods for tailoring surface properties. However, PEO coatings still need to be improved in various aspects, including mechanical and corrosion performances. In the current study, multi-walled carbon nanotubes (MWCNTs) were

This paper focuses on realizing the exact solutions of three distinct important biological models using the Painlevé approach. These three models are the nonlinear dynamics of microtubules — a new model, the Kundu–Eckhaus model and the double chain model of DNA. Furthermore, the numerical solutions of these three equations have been achieved using the variational iteration method.

In this work, we study the quantum tunnel effect through a potential barrier within a semiclassical formulation of quantum mechanics based on expectation values of configuration variables and quantum dispersions as dynamical variables. The evolution of the system is given in terms of a dynamical system for which we are able to determine numerical effective trajectories for individual particles, similar

Thin-wall parts have the advantages of light weight and high structural strength and are widely used in industrial fields. As the increasing requirements for the form accuracy and surface quality, ultra-precision cutting has been increasingly used to manufacture thin-walled parts. However, due to the small effect range (less than 10 μm) of residual stress caused by ultra-precision cutting, it cannot

Venture capital is an important force in promoting technological innovation and social progress. Research regarding the attention on venture capital can help understand the development and social influence of venture capital, which is conducive to the policy guidance and incentive to the industry. With the rapid development of information technology, the Internet has become the main source and dissemination

In this paper, we show that complete integrability is preserved in a multicomponent differential-difference Volterra system with branched dispersion relation. Using the Hirota bilinear formalism, we construct multisoliton solutions for a system of coupled M equations. We also show that one can obtain the same solutions through a periodic reduction starting from a two-dimensional completely integrable

The tunneling and multiphoton ionization of atoms in an intense two-color linearly and circularly polarized laser fields are discussed in the Keldysh theory framework. We use the “imaginary-time” method, where tunneling of the photoelectron is described by the classical equations of motion but with purely imaginary “time.” Together with using of the saddle-point method, this allows to obtain the dependence

The aim of this research is to study the critical temperature depending on the pressure of one-band superconductor. We derive the exact equation of the critical temperature Tc(P) by using the BCS-like model. The effect of pressure and pseudogap on critical temperature has been investigated. The analytic form and the approximation of the critical temperature are shown. First, we consider the effect

Blind quantum computation (BQC) allows a client who has a few quantum abilities to interact and delegate her quantum computation to a server that has strong quantum computabilities, while the server learns nothing about client’s quantum inputs, algorithms, and outputs. In this article, a new BQC protocol with hybrid model is proposed, using the combination of rotation operators to construct arbitrary

We explore the changes of Quantum Fisher information (QFI) for an uniformly accelerating atom coupling to fluctuating massless scalar field with a perfectly reflecting boundary. We first deduce the master equation that the system obeys. For the unbounded case, the vacuum fluctuation and Unruh thermal bath can rapidly degrade the QFI. However, with a boundary, the degradation, preservation, fluctuation

This article explores the abundant solitary wave solutions of the conformable coupled Jaulent–Miodek (JM) equations appearing in applied physics. The aforesaid coupled equations belong to the family of shallow-water wave equations. Two recent modified integration schemes are used for the first time to produce a novel solitary wave, trigonometric and other solutions with some free parameters in the

We present a general growth model based on nonextensive statistical physics. We show that the most common unidimensional growth laws such as power law, exponential, logistic, Richards, Von Bertalanffy, Gompertz can be obtained. This model belongs to a particular case reported in (Physica A 369, 645 (2006)). The new evolution equation resembles the “universality” revealed by West for ontogenetic growth

The traveling wave solutions of the combined Korteweg de Vries-modified Korteweg de Vries (cKdV-mKdV) equation and a complexly coupled KdV (CcKdV) equation are obtained by using the auto-Bäcklund Transformation Method (aBTM). To numerically approximate the exact solutions, the Finite Difference Method (FDM) is used. In addition, these exact traveling wave solutions and numerical solutions are compared

Abstract We discus the gauge dependence of one-loop divergences in the six-dimensional \(\mathcal{N} = (1,1)\) supersymmetric Yang–Mills (SYM) theory.

By employment of a flexible benzoimidazole-type ligand of 1-(2-(1H-benzoimidazol-1-yl)ethyl)-1H-benzoimidazole (beb), two coordination polymers (CPs) of Zn(II) and Co(II) namely, {[Co(beb)(dmglut)]}n (1) and {Zn2(beb)2(hipt)2(H2O)1.5(MeOH)}]n (2) have been produced in the existence of distinct dicarboxylate ligands and metal ions. The measurements of luminescence reveal that the Zn(II)-containing complex

The fluorescent silver nanoparticles were synthesized using trisodium citrate as a reducing and stabilizing agent in a microwave-assisted reduction process. The influence of synthesizing parameters such as reaction duration, temperature, and trisodium citrate concentration (100, 200, and 400 ppm) were examined on the characteristics and fluorescent properties of synthesized silver nanoparticles (AgNPs)

We used first‐principles calculations with the most accurate hybrid functional to investigate the effect of native point defects and Ti/Fe impurities on electrical and optical properties of α‐Al2O3. For dominant native point defects, Al vacancy (VAl), O vacancy (VO) and Al interstitial (Al i ) defects, were taken into consideration and we found that only VAl defect provides the absorption line in the

Glass → crystal transformation of lithium disilicate has been studied using molecular dynamics simulations using an effective partial charge potential. The structural evolution of the interface between glassy and crystalline lithium disilicate was analyzed to simulate crystallization of glass on pre‐existing crystal seeds. Besides previously used atomic number density, the distribution of Qn species

We calculated the structural stability, electronic, optical, and thermoelectric properties for α-PtO2 structures (bulk, bilayer, and monolayer) via first-principles density functional theory calculations. The results show that there is good agreement between the calculated lattice parameters and the available experimental data for the bulk structure. The in-plane Young's modulus and Poisson's ratio

The current paper provides a theoretical study of the binding energy of an off-center donor impurity in wurtzite InGaN/GaN multilayer cylindrical quantum dots (MCQDs). The Schrödinger equation related to the shallow donor impurity has been solved by the finite element method (FEM) using a parabolic confinement potential in the radial direction and a square one in the z direction within the effective-mass

The AC loss occurred in REBa2Cu3Oy (REBCO, RE = rare earth elements, Y, Eu, Gd) superconductor is serious problem in AC applications because it may cause a severe temperature rise of superconducting systems. Therefore, it is necessary to understand the AC loss property of REBCO superconducting tape in detail and to reduce that. As AC application such as motor, the tape is mostly stacked into multi-layer

Terbium doped titania (Tb–TiO2) nanoparticles with different concentration of Tb+3 ions were synthesized by sol-gel method. The crystallite size of nanoparticles decreased with increasing the Tb+3 ions concentration suggesting the inhibition of growth of TiO2 nanoparticles while the phase of nanoparticles was not affected by doping of Tb+3 ions. A marginal red shift in absorption and a decrement in

In present study, calcium (Ca) is used as a dopant to explore the optical properties of cubic SrTiO3 through first principles calculation. To execute the calculations, GGA and ultra-soft pseudo potential were used. The minimal impact of impurity inclusion was studied. Thus only two atoms of Ca were doped at Sr sites in intrinsic SrTiO3. The purpose of this work was to determine the impact of Ca inclusion

Two-dimensional photonic crystals made of six air holes on a core-shell dielectric material has been proposed to study the newly emerged photonic quantum spin Hall insulator. Specifically, radii modification of the air holes and core-shell without breaking time-reversal (TR) symmetry are supported by the C6 point group symmetry upon a proposed scheme. It is shown that multiple topological transitions

Carbon materials are considered as one the hardest materials in the nature and are potential candidates as reinforcement agents. Graphitic Carbon Nitride (g-C3N4) nano-rods have been synthesized by using melamine and are examined by XRD, SEM, EDS, TEM and FTIR for checking their structures, elemental analysis and phase purity. The synthesized g-C3N4 nano-rods are used in various compositions (0%, 0

In the present work we report the effect of magnetic field on the emission intensity of the neutral and singly ionized transition line of the Tin plasma in vacuum produced by the CO2 laser. We have investigated time of flight measurement and the expansion velocity of the excited neutral and ions of the tin plasma in the absence and in the presence of the magnetic field of 0.64T in vacuum at a distance

We report the hydrothermal synthesis of Zn1-xMnxO (x = 0.00, 0.02, 0.04, 0.06) nanostructures and their structural and optical properties. The X-ray diffraction analysis confirmed the wurtzite phase and successful incorporation of Mn in ZnO matrix. Field emission scanning electron microscope images revealed the suppression of growth rate and change in morphology of ZnO from nanoplates to nanorods at

Lanthanum substituted Mg–Ni–Cu–Co ferrite nanoparticles prepared through the Sol-Gel method were studied using different methods such as XRD, FTIR, UV-VIS, SEM, Raman, LCR, EDX and IV to evaluate the structural, optical and electrical properties. The single-phase cubic spinel structure of the prepared samples was confirmed from X-ray diffraction analysis. The FT-IR spectra indicated two absorption

Al/p-Si (MS) type SBDs with/without (PVP–TeO2: Cd) interfacial layer was fabricated in the same conditions to investigate Cd impurities on its electrophysical parameters using I–V and Z-f measurements. Structural and optical properties of the (TeO2: Cd) nanostructures were characterized using XRD, FE-SEM, EDX, and UV–Vis techniques. The existence of Cd impurities and formation of TeO2 nanostructures

Simple, low cost spray pyrolysis technique is implemented herein to deposit thin film of Cu2SnS3 on a glass substrate for photovoltaic applications. Structural, physical, chemical and optical properties of the thin film were analyzed by XRD, SEM, AFM and UV-VIS spectroscopy. The XRD pattern indicated tetragonal phase of the deposited Cu2SnS3 thin film having major XRD peaks at 2θ of 28.54°, 33.07°

This research work has been demonstrated the growth of ZnInO thin films using thermal evaporation technique for thermoelectric power generation applications. The pure zinc powder and indium metal were evaporated on the multi-crystalline Si substrate using the vacuum tube furnace. Deposited thin films were annealed at various temperatures (500–700 °C) for 30 min in a programmable muffle furnace. XRD

The band line-up and band offset calculations of GaAs0.978Bi0.022/GaAs single quantum well with spatial changes of Bi composition were reported. The spatial Bi profile and a certain amount of the Bi composition in the barrier layer were determined by HR-XRD measurements. Virtual Crystal Approximation and Valence Band Anti-Crossing models were used including strain effects to obtain conduction and valence