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On the solutions of space-time fractional CBS and CBS-BK equations describing the dynamics of Riemann wave interaction Int. J. Mod. Phys. B (IF 1.7) Pub Date : 2024-05-08 A. K. Sahoo, A. K. Gupta, Aly R. Seadawy
In this paper, Kudryashov and modified Kudryashov methods are implemented for the first time to compute new exact traveling wave solutions of the space-time fractional (3+1)-dimensional Calogero–Bogoyavlenskii–Schiff (CBS) equation and Calogero–Bogoyavlenskii–Schiff and Bogoyavlensky Konopelchenko (CBS-BK) equation. With the help of wave transformation, the aforementioned fractional differential equations
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Electro-fluid-dynamics (EFD) of soft-bodied organisms swimming through mucus having dilatant, viscous, and pseudo-plastic properties Int. J. Mod. Phys. B (IF 1.7) Pub Date : 2024-04-30 Zeeshan Asghar, Rehman Ali Shah, Muhammad Waqas, Muhammad Asif Gondal
The sperm propelling mechanism has been proposed as a possible resource for soft micro-robots in confined spaces, with potential applications in biomedical engineering. Human sperm cells essentially swim through the non-Newtonian liquid (cervical mucus) to reach their target. Thus, sperm cells swimming through non-Newtonian fluids is not vital only for physiology, but also for the fabrication of swimming
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Application of micropolar fluid model to blood flow through catheterized artery with stenosis and thrombosis Int. J. Mod. Phys. B (IF 1.7) Pub Date : 2024-04-30 Muhammad Ashfaq, Zeeshan Asghar, Yufeng Nie, Wasfi Shatanawi
This paper presents a model of nonisothermal blood flow through a diseased arterial segment due to the presence of stenosis and thrombosis. The rheological properties of the blood in the annulus are captured by utilizing micropolar fluid model. The equation describing the blood flow and heat transfer is developed under the assumption that stenosis growth into the lumen of the artery is small as compared
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Investigating the effect of oxygen vacancy on electronic, optical, thermoelectric and thermodynamic properties of CeO2 (ceria) for energy and ReRAM applications: A first-principles quantum analysis Int. J. Mod. Phys. B (IF 1.7) Pub Date : 2024-04-17 Shafaat Hussain Mirza, Sikander Azam, Zeesham Abbas, Shoyebmohamad F. Shaikh
CeO2 thin film-based devices have become hot favorite candidates for researchers due to the outstanding characteristics of ceria such as memory storage materials, high oxygen storage capacity, excellent chemical and thermal stability, high transparency in visible region and highly tunable energy band structures. Developing suitable materials for industrial uses like optoelectronic and thermoelectric
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Riccati–Bernoulli sub-ode method-based exact solution of new coupled Konno–Oono equation Int. J. Mod. Phys. B (IF 1.7) Pub Date : 2024-04-17 Mrutyunjaya Sahoo, S. Chakraverty
Nonlinear partial differential equations (NLPDEs) have emerged as a major focus of study in a variety of nonlinear science disciplines. This is because in general, mathematical, physics and engineering problems may be stated by NLPDEs. It may be noted that a specific kind of exact/analytical solution called traveling wave solutions for NLPDEs has great significance. In this regard, this paper addresses
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Ab initio spectroscopic studies of AlF and AlCl molecules Int. J. Mod. Phys. B (IF 1.7) Pub Date : 2024-04-17 R. Bala, V. S. Prasannaa, D. Chakravarti, D. Mukherjee, B. P. Das
In this work, we report the results from our spectroscopic study on AlF and AlCl molecules. We carry out detailed electronic structure calculations in both the molecules, including obtaining the potential energy surfaces of the X1Σ ground electronic state and some of the low-lying excited electronic states belonging to Σ and Π symmetries. This is followed by evaluating the spectroscopic constants and
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Thermal performance appraisal of hybrid and nanofluid flow between a cone and a disk with variable thermal conductivity, viscous dissipation, and Joule heating Int. J. Mod. Phys. B (IF 1.7) Pub Date : 2024-04-17 Shuguang Li, Hina Gul, Muhammad Ramzan, Seifedine Kadry, C. Ahamed Saleel
In many engineering systems, hybrid and nanofluids are influenced by their respective thermophysical characteristics. Lately, several models have been envisaged to foresee the hybrid and nanofluid attributes. The properties of hybrid nanofluids (HNFs) as potential heat transfer fluids are controlled by numerous aspects such as solid part size, volume fraction, and temperature. Considering the interesting
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Impact of Newtonian heating on MHD flow of non-Newtonian fluid Int. J. Mod. Phys. B (IF 1.7) Pub Date : 2024-04-03 Hessah Alqahtani
Studying real-world problems with flow models of Newtonian and non-Newtonian fluids has gained particular attention because of its significance in engineering and other industries. According to trends in the field of research, interest in studying the characteristics of all such fluid flows is expanding. Due to the peculiar nature of the physical foundation of these non-Newtonian flows, no single constituent
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Nonlinear localized modes in a higher-order anisotropic ferromagnetic nanowire with octupole–dipole interaction Int. J. Mod. Phys. B (IF 1.7) Pub Date : 2024-04-03 T. Pavithra, L. Kavitha, Awadesh Mani
Increasing demand for advanced technologies that depends on magnetic phenomena, understanding and controlling the behavior of discrete breather in ferromagnetic nanowires are crucial for enhancing the efficiency and performance of such devices. The presence of octupole–dipole interactions signifies a unique aspect that could potentially influence the stability and localization of breather excitations
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Novel optical solitons patterns via Biswas–Arshed equation with gain or loss. Modulated wave gain Int. J. Mod. Phys. B (IF 1.7) Pub Date : 2024-04-03 H. I. Abdel-Gawad
The Biswas–Arshed equation (BAE) with space–time dispersion was currently considered in the literature. Optical phenomena embedded in this equation are self-steepening, self-phase modulation and Raman scattering. Here, we consider BAE with gain or loss. It is worth mentioning that the gain or loss has an impact on blowup or decaying solitons propagation in optical fibers, which is novel. Our objective
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Effect of three-phase-lag thermal and three-phase-lag diffusion models on waves at the boundary of elastic and thermoelastic diffusion medium Int. J. Mod. Phys. B (IF 1.7) Pub Date : 2024-04-03 Shruti Goel, Vandana Gupta, Manoj Kumar
In this paper, we discuss the reflection and refraction of an incident P wave or SV wave at the interface of a plane. The plane, which is divided into two halves, is an elastic medium M1 having an incident wave and a thermoelastic diffusion medium M2 with TPLT (i.e., three-phase-lag thermal) and TPLD (i.e., three-phase-lag diffusion) models. It has been noticed that two waves are reflected and four
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Influence of temperature on Rashba effect of bound polaron in a parabolic quantum well Int. J. Mod. Phys. B (IF 1.7) Pub Date : 2024-04-03 Ya-Li Li, Shu-Ping Shan
In this paper, using an improved linear combination operator method and variational technique, the expression of the bound polaron effective mass ratio in a parabolic quantum well is derived. Due to the spin–orbit interaction, the effective mass ratio of bound polaron splits into two branches. The relations among effective mass ratio with temperature, electron–phonon coupling strength and Coulomb bound
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Carboxymethyl cellulose-water-based hybrid nanofluid mixed convection flow between porous vertical plates: Entropy generation analysis Int. J. Mod. Phys. B (IF 1.7) Pub Date : 2024-04-03 Padma Ummeda, Surender Ontela
This paper analyzes the thermodynamic second law analysis of mixed convection heat transfer of Carboxymethyl Cellulose (CMC)-water based viscoelastic hybrid nanofluid flow in a vertical parallel plate channel filled with porous medium. In mixed convection flow, where both buoyancy and viscous forces play significant roles in the flow behavior, the inclusion of viscous dissipation in the analysis is
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Numerical heat featuring in radiative convective ternary nanofluid under induced magnetic field and heat generating source Int. J. Mod. Phys. B (IF 1.7) Pub Date : 2024-04-03 Adnan, Waseem Abbas, Aisha M. Alqahtani, Zafar Mahmood, Sid Ahmed Ould Beinane, Muhammad Bilal
The study of nanoliquid characteristics and their heat performance have attracted the interest of engineers. These engineered fluids have high thermal conductivity due to which such liquids are reliable for different engineering applications including heating/cooling of buildings, thermal and mechanical engineering, etc. Therefore, the current research design provides a new ternary nanoliquid model
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Thermal and mass stratification effects on MHD nanofluid past an exponentially accelerated vertical plate through a porous medium with thermal radiation and heat source Int. J. Mod. Phys. B (IF 1.7) Pub Date : 2024-04-03 Rupam Shankar Nath, Rudra Kanta Deka
The aim of this research is to investigate the combined effects of thermal and mass stratification on unsteady magnetohydrodynamic nanofluid moving through an exponentially accelerated vertical plate in a porous medium. The governing equations of the problem are solved numerically by using the implicit Crank–Nicolson method. The results of the nanofluid with two different stratification are compared
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The transport of self-propelled ellipsoidal particles confined in 2D smooth corrugated channel Int. J. Mod. Phys. B (IF 1.7) Pub Date : 2024-04-03 Bing Wang, Wenfei Wu
Directed transport of self-propelled ellipsoidal particles confined in a smooth corrugated channel with asymmetric potential and Gaussian colored noise is investigated. Effects of the channel, potential and colored noise on the system are discussed. Large noise intensity in the x-axis direction inhibits the transport in −x and +x directions. The directed transport speed |〈V〉| has a maximum with increasing
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Effect of pressure on the structural properties of tantalum carbide Int. J. Mod. Phys. B (IF 1.7) Pub Date : 2024-04-03 Lun Xiong, Bin Li, Yongqing Hu
In this study, tantalum carbide (TaC) samples were placed in a diamond anvil cell to study the equation of state at room temperature and high pressure using synchrotron radiation X-ray diffraction. By fitting the data at ambient pressure and up to the highest pressure of 38.5GPa, we obtained the bulk modulus and first derivative of TaC as K0=290.7 (6.8) GPa and K0′=3.05 (0.49), respectively. In addition
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Thermal energy enhancement in blood conveying gold nanoparticles with temperature-dependent viscosity Int. J. Mod. Phys. B (IF 1.7) Pub Date : 2024-03-29 Kotha Gangadhar, K. Shashidhar Reddy, Abderrahim Wakif
Cancer is one of the universal popular healthcare problems, and there is a struggle to find advanced fresh medicines andidentify superior ways of distributing medications. Cancer is harmful and deadly to maximum of its patients. Cytotoxic agents are carried by cancer cells, to increase efficacy and protection. This reminds us that nanotechnology can be utilized for medicine. This current allegation
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Analysis of activation energy on the Johnson–Segalman nanofluid through an asymmetric microchannel: Numerical study Int. J. Mod. Phys. B (IF 1.7) Pub Date : 2024-03-29 A. Magesh, P. Tamizharasi, O. D. Makinde, S. Srinivas
Activation energy and thermal radiation as a means of heat transfer are significant and fascinating phenomena for scientists and researchers because of their significance in cancer treatment. As a result, heat kills cancer cells and shrinks tumors, making hyperthermia therapy a cutting-edge cancer treatment. This paper examines the peristaltic motion of a Johnson–Segalman nanofluid across an asymmetric
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Comparative study of silver-blood-based three binary nanofluids and thermal enhancement in a PTSC Int. J. Mod. Phys. B (IF 1.7) Pub Date : 2024-03-29 Kotha Gangadhar, M. Sangeetha Rani, Abderrahim Wakif
This paper studies the similarity of silver-blood-based Carreau–Maxwell, Carreau–Oldroyd-B and Carreau–Jeffrey binary nanofluids on the parabolic trough solar collector. By the energy equations, Joule heating effects and nonlinear thermal radiation were integrated. The velocity slip condition by the solid–liquid interface was again worked out. In this model, magnetic field aspects and viscous dissipation
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Ternary nanofluids due to moving wedge with strong magnetic field and convective condition Int. J. Mod. Phys. B (IF 1.7) Pub Date : 2024-03-29 Kotha Gangadhar, M. Sangeetha Rani, Abderrahim Wakif
The control of temperature distribution and management of heat energy are key problems in an industry. In this study, free convective flow with ternary nanoparticles (Cu, Ag, MgO) was equipped to analyze the impact on magnetic field and thermal radiation through a moving wedge surface. This volumetric concentration by Cu, Ag and MgO nanoparticles is selected by the most 4% to prevent the instability
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Modeling convective transport in a reactive fluid near a vertical pervious plate influenced by intense magnetic forces, induced magnetic field, Hall current and thermo-diffusion Int. J. Mod. Phys. B (IF 1.7) Pub Date : 2024-03-29 Sanatan Das, Bikarna Tarafdar, Rabindra Nath Jana
Exploring convective transport in conducting fluids under potent magnetic influences yields essential insights into numerous natural and designed systems. Such insights aid researchers and engineers in making enlightened progressions in their domains. This paper delves into the convective motion in a reactive fluid moving past a vertically perforated plate, governed by intense magnetic forces, the
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Thermal and mass transport investigation of magnetohydrodynamic reactive nanofluid flow utilizing Buongiorno’s model Int. J. Mod. Phys. B (IF 1.7) Pub Date : 2024-03-29 Turkiah M Al-Harthi, Aisha M. Alqahtani, Islam Ragab, Roobaea Alroobaea, Akhter Rasheed, M. Modather M. Abdou, Aatif Ali
The paper’s primary goal is to investigate mass and heat transfer processes in reactive nanofluid particles. Within Buongiorno’s model, three chemical reactions are discussed. The main subject is on the nanoparticle fractions at the boundary. The characteristics of Nt and Nb with regard to the nanoparticle fraction have been found to be passively rather than actively controlled at the boundary. To
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Investigations on theoretical models describing the load-indentation size dependence for (001), (010), (101), (1̄1̄1) and (1̄11) faces of triglycine sulphate Int. J. Mod. Phys. B (IF 1.7) Pub Date : 2024-03-29 D. Nagaraju, P. V. Raja Shekar, D. Madhavi Latha
Ferroelectric triglycine sulphate (TGS) single crystals were grown by slow evaporation technique over a period of 30–40 days. The Vickers microhardness studies have been carried out on (001), (010), (101), (1̄1̄1) and (1̄11) faces of the TGS crystal. The as-grown (001) face and (010) face with the ferroelectric phase were used to study the temperature dependence of hardness. The indentation size effect
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Nonlinear excitation of wakefields in quantum plasma channel Int. J. Mod. Phys. B (IF 1.7) Pub Date : 2024-03-27 Punit Kumar, Chhaya Tewari
A detailed analytical study for wakefields excitation in a channel of quantum plasma is presented. The recently developed quantum hydrodynamic (QHD) model has been used to develop the interaction picture. Applying the perturbations in the laser fields orders, the magnetic and electric wakefields have been obtained for a Gaussian laser pulse. The electrons trapped by the wakefields are accelerated to
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Comparative analysis of temperature-based graphical indices for correlating the total π-electron energy of benzenoid hydrocarbons Int. J. Mod. Phys. B (IF 1.7) Pub Date : 2024-03-25 Sakander Hayat, Jia-Bao Liu
In a graph G=(V,E), the temperature Tx of a vertex x∈V is defined as Tx=dx/n−dx, where n is the order of G and dx is the valency/degree of x. A topological/graphical index GI is a map GI:∑→ℝ, where ∑ (respectively, ℝ) is the set of simple connected graphs (respectively, real numbers). Graphical indices are employed in quantitative structure-property relationship (QSPR) modeling to predict physicoc
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Adsorption and formation energies of nucleobase–Fullerene: A first-principles simulation Int. J. Mod. Phys. B (IF 1.7) Pub Date : 2024-03-25 Nur Anggita Sari, Yosephine Novita Apriati, Ari Dwi Nugraheni, Sholihun
A computational study was conducted using the density functional theory (DFT) method to determine the energy stability of a system composed of deoxyribonucleic acid/ribonucleic acid (DNA/RNA) nucleobase molecules on Fullerene C60 as a potential gene delivery system. The feasibility of the system for gene delivery and nanomedicine applications was assessed by examining the strong geometric bonds formed
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Numerical solution of steady nonlinear differential equations for compressible flow through a spinning convergent divergent nozzle Int. J. Mod. Phys. B (IF 1.7) Pub Date : 2024-03-23 Syed Wajeeh-ul-Hassan, Mujtaba Arif, Muhammad Abdul Basit, Romana Basit, Muhammad Nauman Aslam
Many projectiles tend to spin about their longitudinal axis while progressing in the forward direction. It helps in providing stability and a reference direction for guidance during their run. Many different projectiles employ a supersonic convergent-divergent nozzle to produce thrust for their forward motion; hence, the nozzle and overall whole propulsion system tend to spin about its axis of rotation
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Prediction of large spin-valley polarization in the Janus 2H–WSSe monolayer on VN magnetic substrate Int. J. Mod. Phys. B (IF 1.7) Pub Date : 2024-03-23 Ruoxue Zhang, Zefang Li, Yukai An
Two-dimensional heterostructures based on transition metal dichalcogenides (TMDs) exhibit broad application prospects in valleytronics due to the space-reversal symmetry breaking and strong spin–orbit coupling. In this work, the electronic structure, magnetic anisotropy and valley polarization of 2H–WSSe/VN van der Waals heterostructure under various interlayer spacings, magnetic angle and in-plane
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Heat and mass transfer analysis of a Maxwell-power-law fluid in a laminar planar jet flow with Cattaneo–Christov double diffusion theory Int. J. Mod. Phys. B (IF 1.7) Pub Date : 2024-03-23 Zhennan Yang, Chunqiu Wei, Yan Zhang, Yu Bai, Qiao Wang, Chunyan Liu, Muhammad Ramzan
This paper focuses on the heat and mass transfer characteristics of a steady laminar planar jet flow of a Maxwell-power-law (MPL) fluid. MPL is a renowned fluid model with shear thinning and viscoelastic characteristics that can accurately exhibit the rheological features of polymer liquids. In the envisioned study, the MPL constitutive equation is introduced based on an experiment utilizing the Xanthan
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Transient magnetohydrodynamic heat and mass transfer analysis of chemically reacting fluid flow over oscillatory permeable media Int. J. Mod. Phys. B (IF 1.7) Pub Date : 2024-03-20 Ashirbad Kumar Rath, Itishree Nayak, Sukanya Padhi
This study focuses on the numerical observation of the convective motion of chemically active magnetohydrodynamic (MHD) fluid through a vertically oriented permeable medium, incorporating variations in mass and heat transfer. The fluid type is assumed to be incompressible, chemically strongly ionized and viscous with some mass infusibility. The model associated with this problem is solved by a highly
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The structural, magnetic and electrical properties of zinc-doped orthorhombic calcium ferrite nanoparticles: Memory device and high-frequency applications Int. J. Mod. Phys. B (IF 1.7) Pub Date : 2024-03-20 R. Umashankara Raja, H. C. Manjunatha, Y. S. Vidya, R. Munirathnam, K. M. Rajashekara, S. Manjunatha, M. Priyanka, E. Krishnakanth
Calcium ferrite nanoparticles (NPs), doped with Zinc in the range of 10–50mol%, were synthesized through a solution combustion method using citrus Limon extract as a reducing agent, followed by calcination at 500∘C. The synthesized samples are characterized with different techniques. Bragg reflections confirmed the formation of orthorhombic crystal structure. The shifting of the peak toward higher
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Effect of zirconium oxide nanoparticles on structure, dielectric, and optical properties of PVDF/zirconia-based nanocomposites Int. J. Mod. Phys. B (IF 1.7) Pub Date : 2024-03-19 Flora Vidadi Hajiyeva, Mahammadali Ahmad Ramazanov
In this work, the structure, dielectric and optical properties of PVDF/zirconia-based polymer nanocomposites were investigated. The morphology and structure of the nanocomposites were analyzed by XRD, SEM, FT-IR, UV and EDS analyses. It was determined that the forbidden gap for the PVDF/1%ZrO2-based nanocomposite is 4.7eV, for PVDF/5%ZrO2-4.5eV, and for PVDF/10%ZrO2-4.2eV. It is shown that the dielectric
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First-principles study of the effect of tensile strain on the electronic and optical properties of Al-doped monolayer SnS2 Int. J. Mod. Phys. B (IF 1.7) Pub Date : 2024-03-19 Mengting Ma, Guili Liu, Xuewen Gao, Jianlin He, Guoying Zhang
The effect of biaxial tensile deformation on the optoelectronic properties of Al-doped monolayers SnS2 is explored using density functional theory. We found that the pure SnS2 monolayer is an indirect bandgap semiconductor, and with Al doping it changes to a p-type semiconductor with a lowered bandgap value. After applying biaxial tensile deformation to the doped system, i.e., with the increase of
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Effect of shear deformation on electronic and optical properties of monolayer WS2-doped Mo atoms Int. J. Mod. Phys. B (IF 1.7) Pub Date : 2024-03-19 Ying Wang, Nan Yang, Xuewen Gao, Qing Su, Guili Liu, Guoying Zhang
First-principles research has been used to carefully examine the structural stability of the architecture, electronic structure, and optical characteristics of monolayer WS2-doped Mo atoms during shear deformation. Calculations show that the required formation energy gradually increases when shear deformation is increased from 2% to 8%, the bandgap of the system decreases from 1.732eV to 0.922eV, and
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Design and optimization of high-performance eco-friendly perovskite solar cells: Utilizing FAMASnGeI3 and CsGeI3 as absorbers and tuning HTL and interface parameters Int. J. Mod. Phys. B (IF 1.7) Pub Date : 2024-03-18 Pritam Kumar, Brajendra Singh Sengar, Amitesh Kumar
In this work, several designs of lead-based and lead-free perovskite solar cells (PSCs) have been developed and investigated. For the proposed designs, CH3NH3PbI3 (lead-based), FAMASnGeI3, and CsGeI3 (lead-free) are used as absorber materials, Cu2O and NiO have been used as Hole Transport Layer (HTL) materials and TiO2 as Electron Transport Layer (ETL) materials. ETL materials, in general, have more
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Investigating the preferential sites of Co2+ substitution in SrCoxFe12−xO19 using Mössbauer spectroscopy Int. J. Mod. Phys. B (IF 1.7) Pub Date : 2024-03-16 Hengjian Hou, Zheng Li, Zeyi Lu, Jiyu Shen, Zhongjin Wu, Jiangbo Yang, Kaiyang Gao, Yanfang Xia
In this paper, a series of M-type hexagonal SrCoxFe12−xO19 (x=0, 0.25, 0.5) samples have been prepared by sol–gel method. X-ray diffraction (XRD) showed that the samples produced were all p63/mmc space groups of single hexagonal crystals, and the lattice parameters a, b and c did not show the expected trend with increasing x. This was related to the valence changes and lattice distortion caused by
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Luminescence of some lanthanides in synthetic yttrium gagarinite (NaCaYF6) Int. J. Mod. Phys. B (IF 1.7) Pub Date : 2024-03-16 Shruti Dhale, Nilesh S. Ugemuge, Renuka Nafdey, Vartika S. Singh, Sanjiv V. Moharil
NaCaYF6 is the formula for gagarinite. Noting the lack of luminescence studies in this material, we synthesized it using the hydrothermal method and investigated the luminescence of several lanthanides. Characteristic luminescence of Eu3+, Dy3+, Sm3+ and Tb3+ was observed. Detailed results on photoluminescence emission and excitation spectra, lifetime, chromaticity coordinates and concentration dependence
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Synthesis, characterization and properties of Cr-doped ZnO nanoparticles via a facile solvothermal route Int. J. Mod. Phys. B (IF 1.7) Pub Date : 2024-03-15 L. Renuga Devi, E. Selva Esakki, S. Meenakshi Sundar
Cr-doped ZnO (x=0.02–0.08) nanoparticles are synthesized using the microwave solvothermal irradiation technique. The final product is calcinated at 450∘C and the nanostructure of the material is investigated using various techniques. In structural studies, XRD analysis shows that the hexagonal wurtzite structure of ZnO is present in the standard JCPDS card. FESEM spectrum reveals the hexagonal shape
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Effect of tensile and compressive strains on the electronic structure of O-atom-doped monolayer MoS2 Int. J. Mod. Phys. B (IF 1.7) Pub Date : 2024-03-14 Wang Jia-Xin, Liu Gui-Li, Wei Lin, Jiao Gan, Zhang Guo-Ying
We investigate the effects of biaxial tensile and compressive strains on the electronic structure of O-doped monolayer MoS2 by density functional theory (DFT) in this paper. O-doped monolayer MoS2 is an exothermic reaction. The doping of O leads to the transformation of the system from direct bandgap to indirect, and the bonding of Mo and O causes a large amount of charge transfer. The application
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Landau–Zener–Stückelberg–Majorana-like dynamics induced by tunneling of spin qubit states in a multiband two-state magnetic quantum wire Int. J. Mod. Phys. B (IF 1.7) Pub Date : 2024-03-14 S. E. Mkam Tchouobiap, L. C. Fai
We investigate the transfer between spin quantum bit (qubit) states and study the Landau–Zener–Stückelberg–Majorana (LZSM)-like dynamics of tunneling spin qubits in a multiband two-state magnetic quantum wire. Indeed, within the framework of an optical parabolic potential in a three-dimensional (3D) heterostructure quantum wire and under the influence of an external time-varying magnetic field, a model
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Models based analysis of radiative induced MHD hybrid nanofluid flow over an exponentially stretching sheet Int. J. Mod. Phys. B (IF 1.7) Pub Date : 2024-03-14 Nasrullah Khan, Nadeem Abbas, Aqila Shaheen, Wasfi Shatanawi
The study focuses on the flow of hybrid nanofluid, induced by magnetic and radiation effects, across an exponentially stretched sheet. The research examines the impact of temperature-dependent properties of the hybrid nanofluid on the sheet. Water is used as the base fluid, and SWCNT and MWCNT are employed as nanoparticles. The study includes a discussion of the Yamada–Ota, Xue and Tiwari–Das models
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The popular gene of hot event: A hot event propagation mechanism based on information coupling and information energy interaction Int. J. Mod. Phys. B (IF 1.7) Pub Date : 2024-03-11 Zhongkai Dang, Lei Shi, Yuan Yao, Lixiang Li
Recently, the research on the propagation of hot events has received widespread attention. By analyzing the data of hot events and the data of the common events in the same period on the network, we found that hot events usually break out quickly and opinion leaders and cluster behaviors exist in their propagation process. At the same time, the media public opinion fields of reporting hot events overlap
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The spin-5/2 Blume–Capel model by mean-field approach and renormalization group theory Int. J. Mod. Phys. B (IF 1.7) Pub Date : 2024-03-11 I. A. Badrour, R. Aharrouch, N. Hachem, A. Al-Rajhi, M. El Bouziani
The spin-5/2 Blume–Capel model was studied using the mean-field approximation and the Migdal–Kadanoff renormalization group method for two- and three-dimensional systems. We determined the phase diagrams in the (crystal field, temperature) plane where the system exhibited first- and second-order phase transitions as well as isolated critical, bicritical and triple points. In order to show first-order
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Tuning the electro-optical properties of germanene nanoribbons by boron atom substitution for application in information transmission Int. J. Mod. Phys. B (IF 1.7) Pub Date : 2024-03-11 Hoang Van Ngoc, Chu Viet Ha
Germanene nanoribbons, a one-dimensional material, have great potential for future technological applications. This research aims to investigate the electro-optical properties of boron-doped germanene nanoribbons with a width of five atoms. The theory used in this study is density functional theory (DFT). The original system is a narrow band gap semiconductor, with a gap size of 0.06eV. The doped configurations
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Properties of new even and odd nonlinear coherent states with different parameters Int. J. Mod. Phys. B (IF 1.7) Pub Date : 2024-03-09 Cheng Zhang, Rui-Jiao Miao, Xiao-Qiu Qi
We construct a class of nonlinear coherent states (NLCSs) by introducing a more general nonlinear function and study their nonclassical properties, specifically the second-order correlation function g(2)(0), Mandel parameter Q, squeezing, amplitude-squared squeezing and Wigner function of the optical field. The results indicate that the nonclassical properties of the new types of even and odd NLCSs
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Characterizing elastic wave reflection in a semiconducting isotropic diffusive medium with temperature rate-dependent nonlocal theory Int. J. Mod. Phys. B (IF 1.7) Pub Date : 2024-03-09 Hashmat Ali, Iffat Sharif, Muhammad Jamal, Ehtsham Azhar
In this paper, we explore the application of nonlocal theory to analyze the phenomenon of coupled thermoelastic wave reflection in a semiconducting diffusive medium, considering its temperature rate dependence. The governing equations are deconstructed using the Helmholtz vector rule, allowing us to delve into the behavior of the system. By calculating the dispersion relation in terms of propagation
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Chemical reaction effect across the moving flat plate with heat generation and MHD flow of Maxwell fluid with viscous dissipation Int. J. Mod. Phys. B (IF 1.7) Pub Date : 2024-03-09 K. Sudarmozhi, D. Iranian, Ilyas Khan
In this paper, the investigation centered on examining a Maxwell fluid’s convective double diffusive flow carefully considers factors such as chemical reactions, radiation, and the presence of a permeable moving flat plate. Additionally, the study encompassed the effects of heat generation and magnetohydrodynamics (MHD). The governing equations, initially expressed as partial differential equations
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Trapping paramagnetic molecules in a dynamic magnetic trap Int. J. Mod. Phys. B (IF 1.7) Pub Date : 2024-03-08 Sheng-Qiang Li, Jing Lin, Xue Chen, Nan-Nan Zhang
Trapping molecules in strong-field-seeking states is particularly attractive to scientists in the field of molecular optics. If the external field is strong enough, all molecules are strong-field seekers. Contrary to the weak-field-seeking states, molecules trapping in strong-field-seeking states can avoid the loss caused by the inelastic collision which is a stumbling block for evaporative and sympathetic
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Hydrodynamic stability of Poiseuille flow in a bidisperse porous medium with slip effect Int. J. Mod. Phys. B (IF 1.7) Pub Date : 2024-03-02 Shahizlan Shakir Hajool, Akil J. Harfash
This study focuses on examining the hydrodynamic stability of an incompressible fluid flowing through a bidisperse porous medium. Specifically, the impact of slip boundary conditions on instability is investigated. The study looks at a scenario in which the Darcy theory is used for micropores and the Brinkman theory is used for macropores. An incompressible fluid is located within an unbound channel
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Electromagnetically induced absorption and transparency in a ladder-type atomic system with different dressing mechanisms Int. J. Mod. Phys. B (IF 1.7) Pub Date : 2024-03-02 Hao-Wei Ti, Xiang-An Yan, Hao-Gong Liu, Xi-Xi Bai, Xiao-Rui Huang, Zhou Guo, Chen-Jie Wang, Dan-Dan Zhang, Xiaoxiang Han
In a Doppler-broadened ladder-type Rubidium atomic system 5S1/2–5P3/2–5D5/2, three-photon electromagnetically induced absorption (EIA) and transparency (EIT) in two schemes of two coupling lasers with different propagation directions are comprehensively studied. Two coupling fields are entangled tightly with each other and induce constructive interference such that we observe EIA as two coupling fields
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A molecular simulation study on the adsorption and separation performance of carbon nanotubes for SO2 in flue gas Int. J. Mod. Phys. B (IF 1.7) Pub Date : 2024-02-29 Jiawei Zhang, Dachuan Qin, Siyao Liu, Wei Wang
To control the emission of SO2 from flue gas into the atmosphere while considering the capture and collection of greenhouse gas CO2, the adsorption behavior of a binary mixture of SO2 and other gases in flue gas (O2/N2/H2O/CO2) in (10, 10) carbon nanotube (CNT) was simulated using grand canonical Monte Carlo (GCMC) simulation. The adsorption and separation performance of SO2 in CNTs with a diameter
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Magnetocaloric effects and critical behavior of La0.65Ca0.35−xGdxMnO3 (0≤x≤0.15) Int. J. Mod. Phys. B (IF 1.7) Pub Date : 2024-02-29 Ma Huaijin, Jin Xiang, Gao Lei, Zhao Jing, Xing Ru, Yun Huiqin, Zhao Jianjun
In this study, we investigate the magnetocaloric effects (MCE) and critical behavior of Gd-doped La0.65Ca0.35−xGdxMnO3 (x=0,0.10,0.15) polycrystalline materials. Our results reveal excellent MCE in the Gd-doped samples. Under a magnetic field of 7T, the full-width at half maximum (ΔTFWHM) increases from 41K (x=0.00) to 121K (x=0.10) and 112K (x=0.15). Additionally, the refrigerant capacity (RC) is
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First-principles investigation of structural, electronic and thermoelectric properties of SmMg2X2 (X = P, As, Sb, Bi) zintl compounds Int. J. Mod. Phys. B (IF 1.7) Pub Date : 2024-02-29 Sajid Khan, Dil Faraz Khan, Tariq Usman, Hayat Ullah, G. Murtaza, Saeed Ullah Jan, Muhammad Waqar Ashraf, Asif Ilyas
Structure complexity, adequate electronic character and congenital lower thermal conductivity of zintl phases result in designing thermoelectrics of tremendous efficiency. Such qualities of zintl phases embolden us to present a detailed study of SmMg2X2 (X = P, As, Sb, Bi) zintl compounds by first principles. The structural characteristics fit well with the existing data. Electronic properties of titled
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Structures, stabilities and electronic properties of carbon monoxide adsorbed and embedded boron nitride nanotubes with different lengths Int. J. Mod. Phys. B (IF 1.7) Pub Date : 2024-02-29 Zhi Li, Jia-Cong Li, Shu-Qi Yang, Jia-Hui Yin
The boron nitrides as excellent sensors are adopted to detect some harmful gases. The adsorption sites and lengths of the boron nitrides are very important to improve the adsorption capacity. The structures, stabilities and electronic properties of the COBmNm and CO@BmNm (m=48, 96 and 144) nanotubes with different lengths have been investigated by using density functional theory. The longer BmNm, COBmNm
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Adiabatic elimination in the presence of multiphoton transitions in atoms inside a cavity Int. J. Mod. Phys. B (IF 1.7) Pub Date : 2024-02-29 Prosenjit Maity
Various approaches have been used in the literature for eliminating nonresonant levels in atomic systems and deriving effective Hamiltonians. Important among these are elimination techniques at the level of probability amplitudes, operator techniques to project the dynamics on to the subspace of resonant levels, Green’s function techniques, the James’ effective Hamiltonian approach, etc. None of the
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Unsteady dynamical analysis of convective hydromagnetic thermal migration of chemically reacting tiny species with dissipation and radiation in an inclined porous plate Int. J. Mod. Phys. B (IF 1.7) Pub Date : 2024-02-29 L. Joseph Sademaki, MD. Shamshuddin, S. O. Salawu, B. Prabhakar Reddy
The essence of the current examination is to carry out thermofluid parametric sensitivity with time-varying thermal migration of chemically reactive tiny species across an oscillating infinite plate surface. The impact of thermal motile tiny particles under the influence of many other oscillating flow parameters has yet to be investigated; hence the results obtained in this research are novel. Using
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Natural convective and Cattaneo–Christov model for couple stress nanofluid at the middle of the squeezed channel with sensor surface Int. J. Mod. Phys. B (IF 1.7) Pub Date : 2024-02-29 T. Salahuddin, Muhammad Awais
The aim of this work is to present a natural convective and squeezing flow model of two-dimensional couple stress nanofluid which is flowing on the sensory surface with variable fluid viscosity. The fluid flowing on a microcantilever sensory surface and squeezing is happening at free stream. The sensor is also useful to detect the movement of fluid and the variations in thermal and solutal rates. The
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Analytical study and heat transfer analysis of on couple stress flow of hybrid nanofluid over a nonlinear stretching surface Int. J. Mod. Phys. B (IF 1.7) Pub Date : 2024-02-29 Ali Rehman, Ma Chau Khun, Mehdi Tlija, Rashid Jan, Mustafa Inc, Shah Hussain
This research paper investigates a two-dimensional couple stress flow of hybrid nanofluid (HN) over a nonlinear stretching surface with heat transfer analysis. HNs are well-known for their exceptional heat transfer properties compared to conventional fluids. The mathematical modeling of the problem involves the formulation of basic governing equations, namely, continuity, momentum and energy equations
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Effect of inclined magnetic field and chemical reaction on Casson fluid flow over a stretching surface with Cattaneo–Christov double diffusion Int. J. Mod. Phys. B (IF 1.7) Pub Date : 2024-02-29 Shahzana Kosar, Muhammad Sagheer, Shafqat Hussain
This investigation discusses the significance of studying the behavior of non-Newtonian fluids, specifically the Casson fluid, subjected to an electrically conducting and stretching sheet. The study also explores the effects of an aligned magnetic field, Cattaneo–Christov double diffusion, viscous dissipation and chemical reactions on heat and mass transfer, respectively. The partial differential equations