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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
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Effect of thickness and applied pressure on quality factor in defective photonic crystals composed of polymer materials Int. J. Mod. Phys. B (IF 1.7) Pub Date : 2024-02-29 Francis Segovia-Chaves, Hassen Dakhlaoui, Santiago Santos Beltrán
In this work, we employed the transfer-matrix method to obtain the transmittance spectrum of a defective one-dimensional photonic crystal composed of polymer materials. We consider that the dielectric constant of the polymers is a function of the applied pressure, and the cavity is infiltrated by plasma cells. When blood plasma concentration and cavity thickness are increased, we observe a defective
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Hidden skyrmion on the spin direction of the Majorana zero mode Int. J. Mod. Phys. B (IF 1.7) Pub Date : 2024-02-29 Xin Shang, Huimin Tang
The spin information of Majorana zero mode (MZM) has important application value in distinguishing MZM from other zero energy states. We study the spin direction of the Majorana zero mode (MZM) localized in a vortex state in a topological superconductor. We find that the topological number of the magnetic structure of the MZM is zero. However, with an increase in the vortex radius, the magnetic structure
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Electromagnetic field on a photothermal semiconducting voids medium under Lord–Shulman and refined multi-phase lag models in thermoelasticity Int. J. Mod. Phys. B (IF 1.7) Pub Date : 2024-02-29 Zahra S. Hafed, S. M. Abo-Dahab, A. A. Kilany, Sameh E. Ahmed
This study investigates the contemporary thermoelasticity theories in a photothermal semiconducting medium with voids influenced by the electromagnetic field. Boundary conditions of the phenomenon were based on the equations that regulate it concerning the stresses, carrier density, change in volume fraction field and temperature on the surface space. The equations were solved in normal mode technique
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A rheological and computational analysis on Buongiorno nanofluid model featuring magnetohydrodynamics Int. J. Mod. Phys. B (IF 1.7) Pub Date : 2024-02-29 Shuguang Li, Z. Asghar, M. Waqas, Hala A. Hejazi, M. Zubair, Dilsora Abduvalieva
This research captures nonlinear thermo-solutal buoyancy (i.e., nonlinear mixed convection) impact in nanofluid flow based on magnetized Casson model. The generalized porosity concept (i.e., Darcy–Forchheimer relationship) is employed by considering incompressible liquid that saturates the porous space. Effects of thermophoresis, Robin conditions, thermo-solutal stratifications and Brownian diffusion
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Numerical computations for Darcy–Forchheimer-based dual convection reactive flow considering Casson nanomaterial by convected permeable surface Int. J. Mod. Phys. B (IF 1.7) Pub Date : 2024-02-09 M. S. Kausar, M. Waqas, S. A. Shehzad, Kh. Hosseinzadeh, Hala A. Hejazi, Wafa Mtaouaa
The use of nanoparticles in heat transmission is an interesting research subject and many scholars have shown an interest in this topic. In accordance with the motivating relevance of nanomaterials, the current research advocates for an evaluation of Casson nanofluid using porous medium thermal analysis in conjunction with vibrant implementations of mixed convection through a chemical reaction. Additionally
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Alkali-metal-based molecular-ion secondary ion mass spectrometry for precise quantitative analysis of low-dimensional materials without standards Int. J. Mod. Phys. B (IF 1.7) Pub Date : 2024-02-09 Purushottam Chakraborty
Advancement in the understanding of fundamental aspects of Secondary Ion Mass Spectrometry (SIMS) has made this technique to be extremely powerful for quantitative materials analysis. The secondary ion emission process is a complex phenomenon involving various mechanisms to understand the mechanism. Among the existing mechanisms, the “electron-tunneling model” is the most accepted concept in the understanding
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Darcy–Forchheimer flow of Carreau fluid over a curved stretching surface with slip condition and variable thermal conductivity Int. J. Mod. Phys. B (IF 1.7) Pub Date : 2024-02-09 Sami Ul Haq, Muhammad Bilal Ashraf
The aim of this study is to perform analysis of nonlinear mixed convection flow of Carreau fluid due to curved stretched surface with slip condition. Furthermore, the effect of Darcy–Forchheimer and MHD is taken into consideration. The energy equation is modified by considering the variable thermal conductivity with Joule heating effect. The governing equations of the problem are highly nonlinear partial
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An exact solution for the entropy base flow of electroosmotic magneto-nanofluid through microparallel channel Int. J. Mod. Phys. B (IF 1.7) Pub Date : 2024-02-09 M. Bilal, Showkat Ahmad Lone, Sadia Anwar, Sana Shahab, Seerat Fatima, M. Ramzan, M. Nadeem
An exact solution of steady state, electroosmotic, transient magnetohydrodynamic (MHD) flow, and heat transfer of a viscous and incompressible electrically conducting nanofluid consists of water and Cu metal, through a microparallel channel under the combined effect of pressure and vertically acting magnetic field is found. An exact solution is calculated through Laplace transform using the software
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Unsteady non-Newtonian fluid flow past an oscillating vertical plate with temperature-dependent viscosity: A numerical study Int. J. Mod. Phys. B (IF 1.7) Pub Date : 2024-01-27 T. Salahuddin, Muhammad Awais, Shah Muhammad
The analysis of non-Newtonian fluid flow over an oscillating surface often involves numerical simulations and experimental investigations. Computational fluid dynamics method including finite difference or finite element techniques can be used to crack the governing equations of the fluid flow. In this work, we used the Crank–Nicolson numerical technique to analyze the numerical behavior of unsteady
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Hamilton energy modulation and synchronization control for a kind of coupled function neurons Int. J. Mod. Phys. B (IF 1.7) Pub Date : 2024-01-27 Lingfeng Jiang, Li Xiong, Xinlei An, Li Zhang
Artificial neural circuits can effectively reproduce the main biophysical properties of neurons when reliable electronic components with unique physical properties are introduced. Connecting memristor to neural circuits not only enhances the potential controllability under external physical stimuli but also recognizes the effects of electromagnetic induction on neural activity. In this paper, the piezoelectric
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A first principles insight on structural, electronic, optical and mechanical properties of ZrCl4 Int. J. Mod. Phys. B (IF 1.7) Pub Date : 2024-01-27 Geoffrey Tse
In this paper, using density functional theory (DFT), we present a systematic computational investigation on ZrCl4 in respect of electronic, structural, optical, mechanical properties, which is of great interest in semiconductor physics. Our results show that the metal tetrachloride is a mechanically stable semiconductor with a wide indirect bandgap of EgHSE03=4.82eV (EgGGA=3.56eV). ZrCl4 could behave
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Dynamics of comparative analysis of Reynold’s and Vogel’s models (variable viscosity) in a wire coating process filled with magnetized porous Int. J. Mod. Phys. B (IF 1.7) Pub Date : 2024-01-25 Rekha Satish, B. T. Raju, P. Durga Prasad, S. V. Siva Rama Raju, C. S. K. Raju, M. Dinesh Kumar
In this paper, we investigate the analysis of Oldroyd 8-constant fluid flow with nanoparticle suspension via a porous media during the coating of wire is carried out. A constant magnetic field and electrically conducting fluid are considered. The governing equations thus obtained for the present model are converted to nonlinear differential equations using variables in dimensionless form. These equations
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Blasius–Rayleigh–Stokes nanofluid dusty flow influenced by Cattaneo–Christov double diffusion and melting heat transfer — application of response surface methodology Int. J. Mod. Phys. B (IF 1.7) Pub Date : 2024-01-25 Tahir Mehmood, Muhammad Ramzan, C. Ahamed Saleel, Seifedine Kadry
This paper focuses on the study of Blasius–Rayleigh–Stokes nanofluid dusty flow with generalized Fourier and Fick laws under the influence of a transitive magnetic field. The Blasius–Rayleigh–Stokes nanofluid dusty flow has significant applications in various fields, including the design of heat exchangers, microfluidic devices and industrial processes involving the transportation of suspended particles
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The role of initial system–environment correlations with a spin environment Int. J. Mod. Phys. B (IF 1.7) Pub Date : 2024-01-25 Ali Raza Mirza, Mah Noor Jamil, Adam Zaman Chaudhry
Open quantum systems are a subject of immense interest as their understanding is crucial in the implementation of modern quantum technologies. In the study of their dynamics, the role of the initial system–environment correlations is commonly ignored. In this work, to gain insights into the role of these correlations, we solve an exactly solvable model of a single two-level system interacting with
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A comparative analysis of spherically and cylindrically shaped nanoparticles containing nanofluid flows over a permeable rotating disk affected by nanoparticles radius and nanolayer Int. J. Mod. Phys. B (IF 1.7) Pub Date : 2024-01-25 Muhammad Ramzan, Nazia Shahmir, Seifedine Kadry, C Ahamed Saleel
The aim of this paper is to present a comparative analysis of spherically and cylindrically shaped nanoparticles immersed separately in a graphene oxide/water nanofluid mixture over a rotating disk influenced by Hall current. The disk’s surface is permeable with suction/injection impact. In order to reveal the thermal integrity of the flow, the effect of nanoparticle diameter and the liquid–solid interfacial
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Improved field electron emission behavior of ultrathin lanthanum hexaboride-coated copper oxide nanowires Int. J. Mod. Phys. B (IF 1.7) Pub Date : 2024-01-22 Amol B. Deore, Aditya T. Jagdale, Chetan D. Mistari, Krishna Jagtap, Sandesh R. Jadkar, Mahendra A. More, Sanjay R. Gadakh, Tomoyuki Ueki, Pankaj M. Koinkar
A simple approach dealing with thermal oxidation at atmospheric pressure was used to synthesize copper oxide nanowires (CuO-NWs) on copper substrate. The vertically oriented CuO-NWs were used for further subjected to deposition of ultrathin layer (∼20nm) of lanthanum hexaboride (LaB6) using the electron beam evaporation technique. The observation of the characteristic vibrational mode of LaB6 in the
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Effects of temperature and pre-bending on the flexural properties of carbon fiber/epoxy composites Int. J. Mod. Phys. B (IF 1.7) Pub Date : 2024-01-22 Sanjay Kumar, Dong Wook Hwang, Yun-Hae Kim
This study investigates the combined influence of temperature and pre-bending (PB) on the flexural properties of Carbon Fiber/Epoxy (CF/Epoxy) composites. The study demonstrated the influence of temperature on CF/Epoxy’s flexural characteristics, noting a marginal reduction in stiffness at higher temperatures (HT=100°C) compared to room temperature (RT=25°C). Notably, even under HT, the composite exhibited
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Lap shear properties of CF/PEKK composites through nanoparticle-enhanced adhesive joints Int. J. Mod. Phys. B (IF 1.7) Pub Date : 2024-01-22 Xiaoqi Li, Sanjay Kumar, Yun-Hae Kim
This study investigates the effects of incorporating halloysite nanotubes (HNTs) into polyetherimide (PEI) adhesive for carbon fiber/polyetherketoneketone (CF/PEKK) composite joints. The CF/PEKK substrate is fabricated through an oven consolidation process, while PEI adhesive films with varying HNTs loadings (0.5, 1 and 3wt.%) are prepared using solvent casting with γ-butyrolactone. Homogeneous dispersion
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Investigation of the influence of Halloysite Nanotubes (HNTs) on the low-velocity impact behavior of carbon fiber-reinforced epoxy composites Int. J. Mod. Phys. B (IF 1.7) Pub Date : 2024-01-22 Sanjay Kumar, Dong-Wook Hwang, Se-Yoon Kim, Xiaoqi Li, Yun-Hae Kim
This study explores the impact of incorporating Halloysite Nanotubes (HNTs) nanoparticles on the low-velocity impact (LVI) behavior of carbon fiber (CF) laminate epoxy nanocomposites. The objective of this investigation was to observe the effects of different nanotube loadings (0.5wt.% and 0.7wt.%) on CF composites and assess their impact resistance. To achieve this, the CF was subjected to Electrophoretic
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Active and passive controls of magnetized Buongiorno Reiner–Phillipoff nanofluid Int. J. Mod. Phys. B (IF 1.7) Pub Date : 2024-01-22 Faisal Z. Duraihem, S. M. Upadhya, P. D. Selvi, K. R. Babu, C. S. K. Raju
This attempt demonstrates the nature of mass and heat transportation in non-Newtonian Reiner–Philippoff liquid flow over moving surface by considering zero and nonzero normal mass flux conditions and transverse magnetic field. Thermophoresis and Brownian movement is accounted due to the Buongiorno model of nanofluid. The expressions of flow are reframed through appropriate variables into pairs of self-similar
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The quantum Carnot-like heat engine: The level degenerate case Int. J. Mod. Phys. B (IF 1.7) Pub Date : 2024-01-22 Yang Yang Yuan, Qiang Gu
The two-level quantum heat engines have been studied extensively. Before that, the optimization of most heat engines was mainly concentrated in non-degenerate cases. We consider the level degeneracy, then calculate the maximum operation time and the irreversible dissipation coefficient of the two-level system under the scheme of linear tuned levels. In the high-temperature limit, we find that the level
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Gamma radiation detector using Cantor quasi-periodic photonic crystal based on porous silicon doped with polymer Int. J. Mod. Phys. B (IF 1.7) Pub Date : 2024-01-22 Zaky A. Zaky, M. Al-Dossari, Ahmed S. Hendy, Mohamed Zayed, Arafa H. Aly
The measurement of patients’ dosages of radiation caused by medical diagnostics continues to be challenging. A Cantor sequence photonic crystal structure using porous silicon doped with a polymer of polyvinyl alcohol, carbol fuchsin and crystal violet (DPV) is proposed. The influence rules of geometrical and optical parameters such as the radiation doses, number of periods, porosity of porous layers
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Gallium phosphide nanoribbon-based carbon monoxide sensors: insights from first principles study Int. J. Mod. Phys. B (IF 1.7) Pub Date : 2024-01-22 Neelesh Pratap Singh, Jayanta Ghosh, Neeraj K. Jaiswal
The priority of research efforts over the past two decades has been focused on the effective detection of harmful gases and the development of small, efficient, and reliable nanodimensional sensors. The adsorption of carbon monoxide (CO) gas molecules on zigzag gallium phosphide nanoribbons (zGaPNRs) has been studied using first-principle calculations within the context of Density Functional Theory
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Nonclassicality in a dispersive atom–cavity field interaction in the presence of an external driving field Int. J. Mod. Phys. B (IF 1.7) Pub Date : 2024-01-22 Naveen Kumar, Arpita Chatterjee
We investigate nonclassical properties of a state generated by the interaction of a three-level atom with a quantized cavity field and an external classical driving field. In this study, the fields being degenerate in frequency are highly detuned from the atom. The atom interacts with the quantized field in a dispersive manner. The experimental setup involves a three-level atom passing through a cavity
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Instability analysis of swirling cylindrical Rivlin–Ericksen viscoelastic fluid–viscous fluid interface with heat and mass transfer Int. J. Mod. Phys. B (IF 1.7) Pub Date : 2024-01-22 Srija R., Abhishek Kumar Singh, Mukesh Kumar Awasthi, Dhananjay Yadav, Sanjith Bharatharajan Nair
The applications of swirling interfaces with heat and mass transfer are diverse and impactful, spanning industries from energy and manufacturing to healthcare and environmental protection. This study focuses on the stability of such interfaces where a viscous fluid interacts with a Rivlin–Ericksen (RE) viscoelastic fluid, undergoing heat and mass transfer. In this paper, the fluids are enclosed between
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Efficient passive GDQLL scrutinization of an advanced steady EMHD mixed convective nanofluid flow problem via Wakif–Buongiorno approach and generalized transport laws Int. J. Mod. Phys. B (IF 1.7) Pub Date : 2024-01-22 Metib Alghamdi, Abderrahim Wakif, Taseer Muhammad
Owing to the practical importance of nanofluids and their adjustable thermal capabilities, this study intends to develop a robust generalized differential quadrature local linearization (GDQLL) algorithm for examining realistically the heat and mass aspects of electrically conducting nanofluids during their non-Darcian laminar motion nearby a convectively heating vertical surface of an active electromagnetic
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Growth and characterization of epitaxial films based on semimagnetic Pb1−xEuxTe solid solutions on various substrates Int. J. Mod. Phys. B (IF 1.7) Pub Date : 2024-01-22 Matanat Mehrabova, Rafig Sadigov, Idayat Nuriyev, Afin Nazarov
This paper presents the results of a study of the growth and structure properties of Pb1−xEuxTe, (x=0.05) epitaxial films with 0.5–1μm thickness, grown on BaF2 and SiO2 substrates oriented in the (111) direction, by the molecular beam condensation method in a vacuum of 10−4 Pa with the use of an additional compensating source of Te vapor during the growth process. The optimal conditions for obtaining
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Dynamic study of new soliton solutions of time-fractional longitudinal wave equation using an analytical approach Int. J. Mod. Phys. B (IF 1.7) Pub Date : 2024-01-22 Shumaila Naz, Attia Rani, Qazi Mahmood Ul Hassan, Jamshad Ahmad, Shafqat-Ur -Rehman, Muhammad Shakeel
In this study, the modified exponential approach is used to investigate the fractional order longitudinal wave equation in a magneto-elastic circular rod, which represents the nonlinear interplay between dispersion and longitudinal wave velocity depending on the rod’s material and geometry. The time-fractional order is used in the standpoint of conformable derivative. Comprehensive and descriptive
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Stagnation point flow for the dynamics of thermal enhancement in nanofluid by a convective extending surface with suction/injection and heat source Int. J. Mod. Phys. B (IF 1.7) Pub Date : 2024-01-22 M. Sunder Ram, MD. Shamshuddin, Ch. Satyanarayana, S. O. Salawu
We intend to analyze the influences of heat dissipation and heat generation on steady nanofluid stagnated flow along an extending surface along with thermal boundary layers. Water-based Cu and Al2O3 nanoparticles are considered. Moreover, the mechanism of injection/suction has been analyzed for such flows. Fundamental governing equations for the flow of an isotropic in-compressible thermally radiative
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Analysis of unsteady MHD fluid flow across two parallel discs with uniform fluctuation subject to modified Hall and activation energy Int. J. Mod. Phys. B (IF 1.7) Pub Date : 2024-01-22 Bilal Ali, Sidra Jubair, Zafar Mahmood, Nisar Ahmad Koka, Abdul Hamid Gani
This study intends to examine the consequences of the externally applied magnetic field and modified Hall effect on nanofluid flow across two symmetrically spinning and extending discs, where continuously the upper disc moves upward and downward. The lower disc is vertically fixed. The discs rotate and move vertically, generating a 3D flow. The mass density, heat transfer and flow motion have been
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Energies and radiative properties of 1s22l2l′ and 1s(2l)22l′ levels in tungsten ion, W70+ Int. J. Mod. Phys. B (IF 1.7) Pub Date : 2024-01-22 A. A. El-Maaref, Mohammed Ezzeldien, M. F. Hasaneen
Multiconfiguration Dirac–Hartree–Fock (MCDHF) calculations of energy levels, oscillator strengths and transition rates of open K-shell transitions in beryllium-like tungsten ion, W70+, are performed using the fully relativistic GRASP2018 code. For only principal quantum number n=2, energy levels of 1s2 2s2, 1s22s2p, 1s22p2, 1s2s22p, 1s2p3 and 1s2s2p2 at different angular momenta and parity (JP) are
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Fabrication of MoO3/rGO/Au composite for increased photocatalytic degradation of methylene blue Int. J. Mod. Phys. B (IF 1.7) Pub Date : 2024-01-18 Akash Sawate, Niloy Paul, Bhaskar Sathe, Tetsuro Katayama, Akihiro Furube, Panakaj Koinkar
Water line purification and wastewater treatment have become challenging in the fast-growing industry, infrastructure, textile, manufacturing world, etc. with this challenge, photocatalysis has gained substantial attention as an environmentally friendly process on which researchers are working aggressively and, in this progress, two-dimensional (2D) are in focus because of their good photocatalytic
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Enhanced electrocatalytic hydrazine oxidation on MoS2-GO nanosheets Int. J. Mod. Phys. B (IF 1.7) Pub Date : 2024-01-18 Pratiksha D. Tanwade, Balaji B. Mulik, Bhaskar R. Sathe, B. B. Musmade, Vinayak Shinde, Akihiro Furube, Panakaj Koinkar
Herein, we present a comprehensive study on electrochemical hydrazine oxidation using hybrid material, MoS2-GO (molybdenum disulfide-graphene oxide), as an efficient electrocatalyst fabricated using the simple chemical reduction method. The MoS2-GO hybrid material adopts a distinctive open flower-like morphology, as demonstrated by field emission scanning electron microscopy (FE-SEM). Asymmetric and
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Towards sustainable manufacturing: Multiple optimization of surface roughness Ra, flank wear Vb in MQL-assisted milling of Titanium Alloy Ti-6Al-4V Int. J. Mod. Phys. B (IF 1.7) Pub Date : 2024-01-18 Van-Canh Nguyen, Dung Hoang Tien, Van Hung Pham, Thuy Duong Nguyen
This research focuses on the sustainable optimization of the milling process for Titanium Alloy Ti-6Al-4V using Minimum Quantity Lubrication (MQL) assistance. This experimental research investigates the effects of cutting parameters and lubrication conditions on the surface roughness (Ra) and flank wear (Vb) in the milling process of Titanium Alloy Ti-6Al-4V. The study aims to evaluate the influence
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A study on rocker arm defect inspection based on vision system Int. J. Mod. Phys. B (IF 1.7) Pub Date : 2024-01-18 Thanh-Hung Nguyen, Duc-Toan Nguyen, Van-Huy Tran, Thi-Thoa Mac
The rocker arm plays a crucial role in an internal combustion engine’s valve train system. Issues often arise when there are errors in the production of the rocker arm, such as the following: (1) misalignment of the rocker arm spindle hole and thread hole; and (2) bevel errors in the rocker arm spindle hole. This paper focuses on the development of a rocker arm chamfering and coaxial defect inspection