Open Access Published by De Gruyter Open Access

Volume 20 Issue 1

January 2022

Issue of Open Physics

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Contents
Journal Overview

To improve the photoelectric test accuracy of moving objects, in this study, the speed attenuation caused by air resistance was introduced into the double-N six-light-screen test system, and the test system was theoretically analyzed through oblique incidence with field experiment for verification. It was found in the study that the optimal test values for yaw angle, pitch angle, axial speed, and distance could be obtained by selecting the pulse time origin at the center of two light screen groups. In addition, mud pellets were used for field experiments to effectively verify the simulation results. In a new model, the test accuracy of yaw angle and pitch angle was greatly improved when compared with traditional processing methods, but the laws of error distribution remained almost unchanged. The error of axial speed showed monotonicity as affected by the pitch angle. At the same time, the error of test distance remained symmetric with the improved accuracy, thereby meeting the statistical test requirements for small-volume moving objects.

Review Articles

Open Access April 8, 2022

Progress in epitaxial growth of stanene

Michał W. Ochapski, Michel P. de Jong

Page range: 208-223

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Abstract

In many regions across the world, hepatitis B virus (HBV) infection is still endemic and the transmission rate is much greater than majority of the known epidemic diseases. Numerous mathematical models (utilizing various differential operators) have been put forth over the past 20 years to understand the transmission mechanism of HBV in various nations and geographical areas. In this manuscript, an epidemic model with various novelties for capturing the dynamic of HBV while utilizing Caputo–Fabrizio fractional differential operator with asymptomatic carriers and vaccination effects is introduced. Initially, the model is formulated by using the ordinary derivative, and afterward, the fractional differential operator is applied to transform the model into arbitrary-ordered derivative. A few basic mathematical properties for the proposed integer-ordered model is presented. The existence of solution to the problem and its uniqueness of the fractional order model are established by transforming the problem into integral equations and then applying the standard results of fixed point theory. For boundedness and positivity of model’ solution is elaborated utilizing the techniques of fractional calculus. It is too much important to validate the theoretical findings through simulations; therefore, the solution curves of the model under consideration are displayed by using the well-known approach called the Mittag-Leffler. To show the behavior of the order of the operator on the dynamics of the disease, various graphical illustrations are presented at the end of the manuscript. By comparing the findings of the present study with the available literature, it is observed that fractional derivative is better to use than integer-order operator for capturing the realistic scenario of the disease.

This work solves the problem of thin-film withdrawal and drainage of a steady incompressible couple stress fluid on the outer surface of a vertical cylinder. The governing equations for velocity and temperature distributions are subjected to the boundary conditions and solved with the help of homotopy analysis method. The obtained expressions for flow profile, temperature profile, average velocity, volume flow rate, and shear stress confirmed that the thin-film flow of couple stress fluid highly depends on involved parameters say Stokes number S t , vorticity parameter λ , couple stress parameter η , and Brinkman number Br presented in the graphical description as well.

It is a well-known fact that functional effects like relaxation and retardation of materials, and heat transfer phenomena occur in a wide range of industrial and engineering problems. In this context, a mathematical model is developed in the view of Caputo fractional derivative for Oldroyd-B nano-fluid. Nano-sized particles of copper (Cu) are used to prepare nano-fluid taking water as the base fluid. The coupled non-linear governing equations of the problem are transformed into dimensionless form. Finite difference scheme is developed and applied successfully to get the numerical solutions of deliberated problem. Influence of different physical parameters on fluid velocity profile and temperature profile are analyzed briefly. It is observed that for increasing values of fractional parameter ( α ), fluid velocity increased, but opposite behavior was noticed for temperature profile. Nusselt number (Nu) decayed for advancement in values of heat source/sink parameter ( Q 0 ), radiation parameter (Nr), volume fraction parameter of nano-fluid ( ϕ ), and viscous dissipation parameter (Ec). Skin friction ( C f ) boosts for the increase in the values of magnetic field parameter (Ha). It can also be noticed that the extended finite difference scheme is an efficient tool and gives the accurate results of discussed problem. It can be extended for more numerous type heat transfer problems arising in physical nature with complex geometry.

Because the traditional pulse laser high-precision ranging method has the problems of low ranging accuracy and long ranging time, a pulse laser high-precision ranging algorithm under low signal-to-noise ratio is proposed. Based on the analysis of the basic principle of pulse laser ranging, the pulse laser signal under low signal-to-noise ratio is obtained by modeling the pulse laser echo analog signal waveform. The wavelet denoising method of improved threshold function is used to denoise the pulse laser signal under low signal-to-noise ratio. According to the processing results, the pulse laser high-precision ranging is carried out through sinusoidal amplitude time conversion. The simulation results show that the proposed algorithm has high precision and short ranging time.

Special Issue on Geological Modeling and Geospatial Data Analysis

Open Access June 24, 2022

Determination of luminescent characteristics of organometallic complex in land and coal mining

Chengli Yao, Aimin Ding, Hongying Li, Yanxin Wei

Page range: 538-547

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Abstract

The traditional measurement methods of luminescent materials have some problems, such as low accuracy and large amount of calculation. Therefore, a new measurement method is proposed in this article. Taking molecular capture as the core, the molecular force field is established. According to the first law of hohber_Kong’s molecules captures molecular dynamics, it extracts dynamic simulation data information and takes this as the input to establish the Markov data analysis model. The molecular dynamics data were input, and the multi-index method was used to describe the characteristics of metal complex luminescent materials. According to the external shape of the material and the tightness of molecular blocks, the dynamic observation index of the current complex can be obtained to determine the characteristics of luminescent materials. The experimental data show that the method in this article has higher accuracy, lower amount of calculation and good overall error adjustment effect. It can effectively determine the characteristics of complex luminescent materials.

Open Access July 19, 2022

InSAR terrain mapping error sources based on satellite interferometry

Genger Li

Page range: 668-679

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Abstract

To improve the accuracy of interferometric synthetic aperture radar (InSAR) topographic mapping, an error source analysis method of InSAR topographic mapping based on satellite interferometry is proposed. According to the basic principle of InSAR altimetry, the preconditions of SAR satellite interferometry are quantitatively analyzed, and the phase error experiment is carried out. The error sources of formation satellite InSAR system are studied. Finally, the error sources affecting the formation satellite InSAR system are systematically analyzed. The experimental results show that this method has good analytical performance, quantitatively evaluates the propagation law of each error, and provides a basic reference for practical application.

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Table of contents 2022 & 2021

Open Physics is a peer-reviewed, open access, electronic journal devoted to the publication of fundamental research results in all fields of physics. The journal provides the readers with free, instant, and permanent access to all content worldwide; and the authors with extensive promotion of published articles, long-time preservation, language-correction services, no space constraints and immediate publication.
Open Physics is listed inter alia by Clarivate Analytics (formerly Thomson Reuters) - Current Contents/Physical, Chemical and Earth Sciences, JCR and SCIE. Our standard policy requires each paper to be reviewed by at least two Referees and the peer-review process is single-blind.

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The journal publishes research and review articles, rapid and short communications, comments and replies that cover the following areas of physical sciences:

Acoustics
Astrophysics,
Atomic and Molecular Physics,
Biological and Medical Physics,
Complex Networks, Socio- and Econophysics,
Computational Physics,
Condensed Matter Physics,
Cosmology and Gravitation,
Fluid Mechanics,
Geophysics,
Nanophysics,
Optics and Lasers,
Particle and Nuclear Physics,
Plasma Physics,
Statistical and Nonlinear Physics,
Surface Physics,
Theoretical and Mathematical Physics.

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Volume 20 Issue 1

Issue of Open Physics

Test influence of screen thickness on double-N six-light-screen sky screen target

Abstract

Analysis on the speed properties of the shock wave in light curtain

Abstract

Abundant accurate analytical and semi-analytical solutions of the positive Gardner–Kadomtsev–Petviashvili equation

Abstract

Measured distribution of cloud chamber tracks from radioactive decay: A new empirical approach to investigating the quantum measurement problem

Abstract

Nuclear radiation detection based on the convolutional neural network under public surveillance scenarios

Abstract

Effect of process parameters on density and mechanical behaviour of a selective laser melted 17-4PH stainless steel alloy

Abstract

Performance evaluation of self-mixing interferometer with the ceramic type piezoelectric accelerometers

Abstract

Effect of geometry error on the non-Newtonian flow in the ceramic microchannel molded by SLA

Abstract

Numerical investigation of ozone decomposition by self-excited oscillation cavitation jet

Abstract

Modeling electrostatic potential in FDSOI MOSFETS: An approach based on homotopy perturbations

Abstract

Modeling analysis of microenvironment of 3D cell mechanics based on machine vision

Abstract

Numerical solution for two-dimensional partial differential equations using SM’s method

Abstract

Multiple velocity composition in the standard synchronization

Abstract

Electroosmotic flow for Eyring fluid with Navier slip boundary condition under high zeta potential in a parallel microchannel

Abstract

Soliton solutions of Calogero–Degasperis–Fokas dynamical equation via modified mathematical methods

Abstract

Performance evaluation of a high-performance offshore cementing wastes accelerating agent

Abstract

Sapphire irradiation by phosphorus as an approach to improve its optical properties

Abstract

A physical model for calculating cementing quality based on the XGboost algorithm

Abstract

Experimental investigation and numerical analysis of stress concentration distribution at the typical slots for stiffeners

Abstract

An analytical model for solute transport from blood to tissue

Abstract

Finite-size effects in one-dimensional Bose–Einstein condensation of photons

Abstract

Drying kinetics of Pleurotus eryngii slices during hot air drying

Abstract

Computer-aided measurement technology for Cu2ZnSnS4 thin-film solar cell characteristics

Abstract

QCD phase diagram in a finite volume in the PNJL model

Abstract

Study on abundant analytical solutions of the new coupled Konno–Oono equation in the magnetic field

Abstract

Experimental analysis of a laser beam propagating in angular turbulence

Abstract

Numerical investigation of heat transfer in the nanofluids under the impact of length and radius of carbon nanotubes

Abstract

Multiple rogue wave solutions of a generalized (3+1)-dimensional variable-coefficient Kadomtsev--Petviashvili equation

Abstract

Optical properties and thermal stability of the H+-implanted Dy3+/Tm3+-codoped GeS2–Ga2S3–PbI2 chalcohalide glass waveguide

Abstract

Nonlinear dynamics for different nonautonomous wave structure solutions

Abstract

Numerical analysis of bioconvection-MHD flow of Williamson nanofluid with gyrotactic microbes and thermal radiation: New iterative method

Abstract

Modeling extreme value data with an upside down bathtub-shaped failure rate model

Abstract

Abundant optical soliton structures to the Fokas system arising in monomode optical fibers

Abstract

Analysis of the partially ionized kerosene oil-based ternary nanofluid flow over a convectively heated rotating surface

Abstract

Multiple-scale analysis of the parametric-driven sine-Gordon equation with phase shifts

Abstract

Magnetofluid unsteady electroosmotic flow of Jeffrey fluid at high zeta potential in parallel microchannels

Abstract

Effect of plasma-activated water on microbial quality and physicochemical properties of fresh beef

Abstract

The finite element modeling of the impacting process of hard particles on pump components

Abstract

Analysis of respiratory mechanics models with different kernels

Abstract

Computer-aided measurement technology for Cu₂ZnSnS₄ thin-film solar cell characteristics

Optical properties and thermal stability of the H⁺-implanted Dy³⁺/Tm³⁺-codoped GeS₂–Ga₂S₃–PbI₂ chalcohalide glass waveguide

Characterization of damage morphology of structural SiO₂ film induced by nanosecond pulsed laser

The seasonal variation in the polarization (E_x/E_y) of the characteristic wave in ionosphere plasma