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An efficient analytical approaches to investigate nonlinear two-dimensional time-fractional Rosenau–Hyman equations within the Yang transform Aip Adv. (IF 1.4) Pub Date : 2024-09-20 Abdul Hamid Ganie, Adnan Khan, N. S. Alharthi, Mohd Asif Shah, Saurav Mallik
The goal of the current study is to analyze several nonlinear two-dimensional time-fractional Rosenau–Hyman equations. The two-dimensional fractional Rosenau–Hyman equation has extensive use in engineering and applied sciences. The fractional view analysis of two-dimensional time-fractional Rosenau–Hyman equations is discussed using the homotopy perturbation approach, Adomian decomposition method,
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3D simulation of the interaction between double copper cathode spot jets in vacuum arc Aip Adv. (IF 1.4) Pub Date : 2024-09-20 Jingjing Ye, Peixuan Yang, Zhao Yuan, Liming Liu, Lixue Chen, Yuan Pan
The mixing process of the cathodic jets is an important connection between the metal surface and the plasma arc column, which helps to understand the diffusion mechanism of the vacuum arc and guides the vacuum switch design. The interaction process of double cathode jets is simulated using a 3D magnetohydrodynamic method. This study analyzes the evolution of plasma parameters as the double cathode
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Immune algorithm-based optimal design of collector system topology for offshore wind farm Aip Adv. (IF 1.4) Pub Date : 2024-09-20 Zhixian Xu, Chunhong Chen, Linkun Yuan, Ruobing He
During the construction of offshore wind farms (OWFs), the capital cost associated with the collector system topology (CST) constitutes a significant proportion of the overall investment. A more efficient solution for connecting submarine cables can lead to substantial cost savings. To address this challenge, this paper introduces a novel approach that divides wind turbines into groups by polar coordinates
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Unidirectional reflectionlessness, asymmetric reflection, and asymmetric transmission with linear and circular polarizations in terahertz metamaterial Aip Adv. (IF 1.4) Pub Date : 2024-09-20 Dongyan Xu, Yanlin Lv, Ying Qiao Zhang, Xing Ri Jin
We propose a structure utilizing a double-layer aluminum ring resonator embedded in a dielectric layer of metamaterial to demonstrate the appearances of unidirectional reflectionlessness, asymmetric reflection, and asymmetric transmission for the incident linear and circular polarizations. A significant feature of this structure is that it allows multiple functions to be implemented in the same structure
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Mathematical analysis of the Wiener processes with time-delayed feedback Aip Adv. (IF 1.4) Pub Date : 2024-09-19 Miki U. Kobayashi, Kohta Takehara, Hiroyasu Ando, Michio Yamada
It is known that time delays generally make a system unstable. However, it is numerically observed that the diffusion coefficients of the Wiener processes with time-delayed feedback decrease while increasing the time delay τ. In particular, the decay of the diffusion coefficients with the form (11+τ)2 has been confirmed by numerical simulations [Ando et al., Phys. Rev. E 96, 012148 (2017)]. In this
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Numerical simulation and experimental study of the dynamic characteristics of a gas turbine rotor system with beam sea and head sea excitation Aip Adv. (IF 1.4) Pub Date : 2024-09-19 Xin Zhang, YongBao Liu, Qiang Wang, ZhiKai Xing, Mo Li
Vibration analysis is crucial for studying rotor dynamics. The gas turbine rotor system is subjected to complex alternating loads during navigation, resulting in vibrations transmitted to the bearings that alter the system’s dynamic characteristics. Based on the similarity law of the wave resistance test, a hull model was established. Beam sea and head sea tests were conducted in the towing pool to
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Design and simulation of a Ka-band frequency doubling gyroklystron amplifier Aip Adv. (IF 1.4) Pub Date : 2024-09-18 Abhijeet Singh, Madan Singh Chauhan, Neelam Srivastava
The design methodology of a Ka-band frequency doubling two cavity gyroklystron has been discussed in this paper. In this study, the amplifier’s design and simulation are accomplished by employing nonlinear analysis and validated using particle-in-cell simulation techniques. The output cavity functions in the TE02 mode at two times the input signal frequency at the second harmonic of the cyclotron frequency
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Flexible and anisotropically conductive film by assembly of silicone rubber and cobalt-coated glass fiber composites Aip Adv. (IF 1.4) Pub Date : 2024-09-18 Ruihua Zhou, Baoyu Tan, Hairu Li
In this study, we prepared electromagnetic cobalt-coated glass fiber (Co@GF) composites via an electroless plating method. Subsequently, a conductive sandwich flexible film consisting of Co@GF composites and liquid silicone rubber (RTV-2) was successfully formed using the tape casting method at room temperature. Based on the perfect coating and excellent electrical conductivity of the Co@GF composites
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Decomposition characteristics and influencing mechanisms of C4F7N/CO2 gas with different metal materials Aip Adv. (IF 1.4) Pub Date : 2024-09-18 Yuan Yang, Keli Gao, Hao Wang, Shuai Yuan, Jinchao Du, Yansong Ji, Dehui Fu, Yin Huang, Guangkai Cui
C4F7N/CO2 gas mixture, as the main new environmentally friendly gas insulation medium, is now being widely used in the ring network switchgear and other gas electrical equipment. In this paper, a test platform was constructed to simulate partial discharge in a gas medium, the decomposition characteristics of the C4F7N/CO2 gas mixture during suspended potential discharge were studied under four different
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Bridgeless modified Cuk–SEPIC power factor correction converter for E-bicycle applications Aip Adv. (IF 1.4) Pub Date : 2024-09-18 Shunmathi M., Julius Fusic S., Shanmugavel Rajesh, Jayant Giri, Sathish T., Abdullah Alarifi, S. M. Mozammil Hasnain
The focus of this scope is on the single phase Cuk and SEPIC power factor correction converter that is attractive to electric bicycle applications. In order to guarantee improved performance, the proposed modified converter is designed to operate in discontinuous conduction mode, which is hidden by changes in supply and load voltage. For rated load, the investigational study achieves reduced input
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First spectroscopic studies in the plasma-beam installation Aip Adv. (IF 1.4) Pub Date : 2024-09-18 B. Chektybayev, S. Zhunisbek, Ye Kashikbayev, A. Duisen, I. Sokolov, T. Tulenbergenov
This paper presents the results of spectroscopic measurements of plasma in a linear simulator of a plasma-beam installation (PBI) for conducting materials science research. For the first time, non-contact optical diagnostic methods were employed to measure the plasma parameters in the PBI. These measurements were allowed for the clarification of the PBI plasma parameters and the identification of transition
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Leakage current in GaN-on-GaN vertical GaN SBDs grown by HVPE on native GaN substrates Aip Adv. (IF 1.4) Pub Date : 2024-09-17 Weiyi Jin, Yumin Zhang, Songyuan Xia, Qizhi Zhu, Yuanhang Sun, Juemin Yi, Jianfeng Wang, Ke Xu
This study investigates leakage mechanisms in vertical GaN-on-GaN Schottky barrier diodes (SBDs) and demonstrates effective mitigation strategies. The fabricated devices exhibit low reverse leakage current (1 × 10−5 A/cm2 at −200 V) and a high Ion/Ioff ratio (∼1010), surpassing the performance of GaN SBDs on foreign substrates. We elucidate dominant leakage mechanisms—thermionic emission, Poole–Frenkel
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Differences in microstructure and properties of Ti-based amorphous composites between recrystallization and partial remelting and semi-solid isothermal treatment Aip Adv. (IF 1.4) Pub Date : 2024-09-17 Xin-hua Huang, Jin-heng Chen, Yu-huai Wang, Yong-xin Luo, Yue-jun Ouyang
The as-cast specimens of Ti48Zr18V12Cu5Be17 amorphous composites were prepared by copper mold suction casting. Next, the as-cast specimens were treated using semi-solid isothermal treatment (SSIT) and recrystallization and partial remelting (RAP). The effects of SSIT and RAP on the microstructure and plasticity were analyzed. The results showed that the microstructure changed from fine crystals in
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Electronic structures and magnetism of MTe2 (M = Cr, V, and Fe) monolayer nanoribbons Aip Adv. (IF 1.4) Pub Date : 2024-09-17 Wei Chen, Qi Chen, Jianmin Zhang, Yu Zheng, Ying Long
Inspired by the fabrication of the transition metal dichalcogenide nanoribbons with well-defined atomically precise edges, we study the stability, electronic structures, and magnetism of MTe2 (M = Cr, V, and Fe) monolayer nanoribbons. The calculations indicate that all three types of monolayers can form structurally stable zigzag (ZNR) and armchair (ANR) nanoribbons, which significantly alter the properties
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Shaping the future of cancer treatment: The commitment of medical physicists Aip Adv. (IF 1.4) Pub Date : 2024-09-17 Marwan Al-Raeei
The incorporation of medical physics into the field of oncology has profoundly changed the ways in which cancer is diagnosed and treated. This article highlights the essential roles that medical physicists play in cancer care, demonstrating how principles from physics improve various aspects of oncology practices. Our analysis reveals that medical physics plays a fundamental role in optimizing various
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Karpman–Washimi ponderomotive force and self-generated magnetic field in nonextensive plasmas Aip Adv. (IF 1.4) Pub Date : 2024-09-17 Ming-Chun Qi, Xiao-Song Yang, Chen Xia, San-Qiu Liu
The non-stationary Karpman–Washimi ponderomotive force and self-generated magnetic field in an unmagnetized system are investigated in the context of nonextensive distribution based on the kinetic theory. The ponderomotive force, magnetization, and radiation power are obtained as functions of the nonextensive parameter q, wave frequency, and wave number. It is shown that the presence of high-velocity
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Exploring the electronic structure and lithium diffusion kinetics of amorphous tungsten oxide Aip Adv. (IF 1.4) Pub Date : 2024-09-17 Chao Tang, Huachen Liu, Changlong Cai
Density functional theory-based characterization of crystalline tungsten oxide has been well established. Nonetheless, there remains a partial gap in theoretical studies concerning the electrochemical characterization of amorphous tungsten oxide. The electronic structure and diffusion kinetics of amorphous tungsten oxide require a systematic theoretical study. Therefore, we employed second-generation
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Kinetic Alfvén solitary waves in astrophysical plasmas Aip Adv. (IF 1.4) Pub Date : 2024-09-17 M. M. Hasan, M. R. Hossen, A. A. Mamun
The magnetospheric plasma (hot and thin) and the solar wind plasma (cold and dense) are separated by the Earth’s magnetopause, in which plasmas of both origins coexist. Different types of plasma diffusions are found due to this plasma mixing, and kinetic Alfvén solitary waves (KASWs) are one of them. In this work, a theoretical approach is taken to study the fundamental properties of heavy ion acoustic
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The effects of metal oxides doping on the surface stability of In2O3 for CO2 hydrogenation Aip Adv. (IF 1.4) Pub Date : 2024-09-13 Xingtang Xu, Yanwei Li, Guang Sun, Jianliang Cao, Yan Wang, Xulong Qin
The significance of maintaining the surface stability of the In2O3 catalyst in the conversion of CO2 to methanol through hydrogenation cannot be overstated. To improve surface stability, doping with metal oxides is usually employed. To explore high-efficiency In2O3 based catalysts, density functional theory calculations were utilized to explore the effects of doping CuO, Co2O3, NiO, TiO2, HfO2, Nb2O3
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Evidence for the quenching of rapid photoresponse by defect generation in ultraviolet illumination of CuSbS2 films Aip Adv. (IF 1.4) Pub Date : 2024-09-13 Y. Takagaki
Phototransients are investigated for CuSbS2 films with varying the illumination energy. The generation and recombination of photocarriers, which are manifested as changes in the sheet conductivity of the films, take place almost instantaneously for excitation wavelengths of 970 and 633 nm. These rapid responses are, in contrast, absent for the illumination at wavelengths of 375 and 280 nm. In particular
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Solid-state reactions at niobium–germanium interfaces in hybrid quantum electronics Aip Adv. (IF 1.4) Pub Date : 2024-09-13 B. Langa, D. Sapkota, I. Lainez, R. Haight, B. Srijanto, L. Feldman, H. Hijazi, X. Zhu, L. Hu, M. Kim, K. Sardashti
Hybrid superconductor–semiconductor materials systems are promising candidates for quantum computing applications. Their integration into superconducting electronics has enabled on-demand voltage tunability at millikelvin temperatures. Ge quantum wells have been among the semiconducting platforms interfaced with superconducting Al to realize voltage tunable Josephson junctions. Here, we explore Nb
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Experimental examination on electrochemical micro-machining of Mg–Li–Sr biomedical alloy: Application of ANOVA, Deng’s similarity, and ANFIS for effective modeling optimization Aip Adv. (IF 1.4) Pub Date : 2024-09-13 V. Kavimani, P. M. Gopal, V. Sivamaran, Sameer Algburi, Debabrata Barik, Prabhu Paramasivam, Abdullah H. Alsabhan, Shamshad Alam
In this work, a newly discovered biomedical grade Magnesium–Lithium–Strontium (Mg–Li–Sr) alloy is machined using electrochemical machining technology. Two main output constraints employed on the research project to evaluate machinability are surface roughness (Ra) and material removal rate (MRR). Changing feed rate (FR), current, electrolyte concentration (EC), and voltage is required in order to carry
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Semantic segmentation algorithm for pantograph based on multi-scale strip pooling attention mechanism and application research Aip Adv. (IF 1.4) Pub Date : 2024-09-13 Renjie Shi, Liming Li, Shubin Zheng, Yizhou Mao, Xiaoxue An
Detecting pantographs remains a challenging task due to complex scenes, variable weather conditions, and noise interference. Existing pantograph detection methods struggle to effectively segment the complete shape of the pantograph from intricate backgrounds and adverse weather, and they often exhibit inadequate real-time performance. To address these challenges, we propose a novel pantograph segmentation
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Does the full configuration interaction method based on quantum phase estimation with Trotter decomposition satisfy the size consistency condition? Aip Adv. (IF 1.4) Pub Date : 2024-09-13 Kenji Sugisaki
Electronic structure calculations of atoms and molecules are considered to be a promising application for quantum computers. Two key algorithms, the quantum phase estimation (QPE) and the variational quantum eigensolver (VQE), have been extensively studied. The condition that the energy of a dimer consisting of two monomers separated by a large distance should be equal to twice the energy of a monomer
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Parallel conducting filaments in resistive switching ZnO thin films Aip Adv. (IF 1.4) Pub Date : 2024-09-13 Tai-Min Liu, Zong-Wei Wu, Ting-An Chien, Pin-Qian Yang, Hua-Shu Hsu, Fang-Yuh Lo
This study examines resistive switching in a Cu/ZnO/ITO structure, uncovering an anomalous phenomenon that provides insights into the mechanisms of parallel conducting filaments in ZnO thin films. The current–voltage (I–V) characteristics exhibit a sharp switch at a positive threshold voltage around 2 V, transitioning from a high resistance pristine state to a low resistance state, interpreted as the
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Numerical investigation and sensitivity analysis of MHD ternary nanofluid flow between perforated squeezed Riga plates under the surveillance of microcantilever sensor Aip Adv. (IF 1.4) Pub Date : 2024-09-13 Rajakumari Rammoorthi, Dhivya Mohanavel
This study addresses the magnetohydrodynamic flow of a squeezed ternary nanofluid between two horizontal parallel Riga plates. The importance of this problem lies in understanding the complex interactions between magnetic fields, nanofluid dynamics, and heat transfer, which are crucial for optimizing thermal management systems. This study utilizes a numerical approach, specifically a collocation method
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Numerical optimization of lead-based and lead-free absorber materials for perovskite solar cell (PSC) architectures: A SCAPS-1D simulation Aip Adv. (IF 1.4) Pub Date : 2024-09-13 Mostafizur Rahaman, Mahmudul Hasan, Rayan Md. Moinuddin, Md. Nasirul Islam
Due to the negative environmental impact, the usage of lead in perovskite solar cells has been a matter of concern. Moreover, a suitable replacement of Pb with similar optoelectrical properties is hard to find. MAPbI3 is the most common material that has been studied for solar PV applications. Compared to MAPbI3, Cs2TiBr6 and MASnI3 have been less studied. In this study, their potential in solar cell
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Numerical analysis of pantograph–catenary coupling vibration for high-speed railways Aip Adv. (IF 1.4) Pub Date : 2024-09-13 Like Pan, Peihuo Peng, Liming Chen, Fan He
There is a pronounced coupling vibration between the catenary and pantograph during operation for high-speed railways. In this paper, a pantograph–catenary coupling vibration model is constructed to investigate the vibration characteristics under various working conditions. Two different types of catenaries (simple and elastic chain types) are simulated and compared using the finite element method
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Providing charge emission for cloud seeding aircraft Aip Adv. (IF 1.4) Pub Date : 2024-09-11 R. Giles Harrison, Ahmad A. Alkamali, Veronica Escobar-Ruiz, Keri A. Nicoll, Maarten H. P. Ambaum
Releasing charge into natural droplet systems such as fog and clouds offers a route to influence their properties. To facilitate charge release across a wide range of altitudes and meteorological circumstances—such as developing clouds—a charge emitter has been developed for integration with the conventional cloud-seeding flares carried by crewed cloud-seeding aircraft. This allows charge emitters
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Atomistic simulation study of Li5GaO4 for lithium-ion batteries Aip Adv. (IF 1.4) Pub Date : 2024-09-11 Sathiyamoorthy Mathushan, Poobalasingam Abiman, Poobalasuntharam Iyngaran, Navaratnarajah Kuganathan
The advancement of rechargeable batteries for electronic devices requires continuous development of innovative materials for anodes, cathodes, and electrolytes. Li5GaO4 stands out as a promising electrode material for lithium-ion batteries, demonstrating swift Li-ion conductivity. Employing sophisticated computational simulation techniques based on classical potentials, we investigate the defect, diffusion
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Simulation of auto-expansion high voltage SF6 circuit breaker breaking process considering valve motion Aip Adv. (IF 1.4) Pub Date : 2024-09-11 Ze Guo, Weimeng Han, Zixu Guo, Hang Liu, Chuanjun Ma
High voltage circuit breakers are important equipment in power systems, and the valve motion of the chambers plays a role in the arc extinguishing performance of high-voltage circuit breakers. Therefore, in this paper, a 145 kV auto-expansion SF6 circuit breaker is taken as the research object, and a two-dimensional axisymmetric magnetohydrodynamic arc model considering valve motion process is established
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Low-energy N+ ion beam induced chemical vapor deposition using tetraethyl orthosilicate, hexamethyldisiloxane, or hexamethyldigermane Aip Adv. (IF 1.4) Pub Date : 2024-09-11 Satoru Yoshimura, Takae Takeuchi, Masato Kiuchi
In this study, we conducted an experiment in which a source material was sprayed onto a substrate with simultaneous N+ ion beam injections. Hexamethyldisiloxane (HMDSO) or tetraethyl orthosilicate (TEOS) was used as a source material. The energy of N+ ions was set at 100 eV. The substrate temperature was set at room temperature. As a result of each trial, a film was deposited on the substrate in both
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Enhanced inertia friction welding of aluminum alloy and high-strength steel using CrCoNi interlayer: Microstructural and mechanical characterization Aip Adv. (IF 1.4) Pub Date : 2024-09-11 Qiming Jiang, Wei Wu, Hongrui Yang, Kunhang Li, Guangchuan Zhang, Hong Huang
The significant disparities in physical and chemical properties between aluminum alloy and high-strength steel pose substantial challenges for conventional friction joining techniques. To address this issue, this study proposes a novel approach utilizing inertial friction welding with an interlayer to join these dissimilar materials. A CrCoNi medium entropy alloy sheet was selected as the interlayer
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MoSe2 nanoflakes for zinc ion storage Aip Adv. (IF 1.4) Pub Date : 2024-09-11 Renzhi Jiang, Yuncheng Cai
Zinc-ion batteries (ZIBs) have become a highly desirable energy storage technology due to their significant advantages, such as low cost and high safety; however, the limitation of cathode materials has become a major factor restricting the development of ZIBs. Here, molybdenum diselenide (MoSe2) nanoflakes were investigated for the first time as a novel cathode for ZIBs. The unique two-dimensional
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Enhancing WEDM performance on Mg/FeCoCrNiMn HEA composites through ANN and entropy integrated COCOSO optimization Aip Adv. (IF 1.4) Pub Date : 2024-09-11 P. M. Gopal, V. Kavimani, S. Sudhagar, Debabrata Barik, Prabhu Paramasivam, Harinadh Vemanaboina
The aim of this experimental work is to find the ideal wire electric discharge machining (WEDM) parameter combination for processing a novel FeCoCrNiMn High Entropy Alloy (HEA)-reinforced magnesium composite. This composite is developed with varying weights of FeCoCrNiMn at 5%, 10%, and 15% through powder metallurgy. Experiments are performed to examine the effects of HEA and wire-EDM variables on
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Fluid-acoustic monolithic simulation based on spectral element method to solve flows past a slotted circular cylinder at low Reynolds numbers Aip Adv. (IF 1.4) Pub Date : 2024-09-10 Ya Zhuo, Guoliang Qin, Ximeng Ye
Aerodynamic noise resulting from the flow around cylinders is a significant engineering challenge in aviation and wind engineering. The phenomenon of alternating vortex shedding in the flow leads to vibration and noise generation. However, accurately describing both the flow field and the sound field is challenging due to the significant difference in magnitude between them. To tackle this issue, this
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Experimental study of discharge current oscillations with dust particles Aip Adv. (IF 1.4) Pub Date : 2024-09-10 Nidhi Patel, G. Prasad
We present a detailed experimental study of discharge current oscillations in a planar cathode plasma with poly-dispersed alumina dust particles. The dominant frequency of oscillation depends on the discharge voltage, operating pressure, and amount of dust particles placed on the cathode. The power-law variation in the dominant frequency with different external operating parameters is presented. Experimental
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Research on single-phase grounding fault location technology in distribution networks based on impedance method Aip Adv. (IF 1.4) Pub Date : 2024-09-10 Sha Wang, Shengkai Wei
This article mainly introduces the impedance based single-phase grounding fault location method for distribution networks, including its theoretical basis, algorithm steps, and simulation verification. First, starting from the impedance analysis of the transmission line model, the method of accurately measuring the location of the fault point through phase domain analysis is explained. Next, the process
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Study on the cracking process of epoxy resin under oxygen and water atmosphere based on ReaxFF force field Aip Adv. (IF 1.4) Pub Date : 2024-09-10 Xiajin Rao, Boya Peng, Lei Zhang, Dajian Li, Wei Zhang, Peng Liu, Fangyuan Han, Liangyuan Chen, Yi Su, Le Wang, Shaoming Pan, Rui Li, Wei Huang, Min Yu
Amino-cured epoxy resins are widely used in the electrical and electronic industry for their excellent properties. To investigate the mechanism of the effect of O2 and H2O on the pyrolysis behavior of epoxy resin, in this paper, the cross-linked structure of bisphenol A type epoxy resin cured by adducts of diethylenetriamine and butyl glycidyl ether is modeled based on the ReaxFF force field, and the
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Broadband metamaterial linear polarization converter designed by a hybrid neural network with data augmentation Aip Adv. (IF 1.4) Pub Date : 2024-09-09 Junyu Hua, Xiaodong He
Deep learning techniques provide a new approach to the design and optimization of electromagnetic metamaterials. This study used a convolutional neural network and long short-term memory (CNN–LSTM) hybrid network to design and optimize a broadband metamaterial reflective linear polarization converter. The data augmentation method was also employed in few-shot learning to reduce optimization costs and
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Analysis of edge stress of combined shell under internal waves Aip Adv. (IF 1.4) Pub Date : 2024-09-09 Yiqiong Cui
Internal wave is essentially a gravity wave induced by the layered structure of water (e.g., density stable layering), with its maximum amplitude occurring within the ocean. Similar to surface waves, internal waves have significant influence on the strength and stability of a submerged body as an external factor. Meanwhile, combined shells are exposed to complicated loads under internal waves, and
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Analysis of noise and its characteristics in avalanche photodiode Aip Adv. (IF 1.4) Pub Date : 2024-09-09 XiaoFei Jia, Qun Wei, Yan Zhu, WenPeng Zhang
Avalanche photodiodes (APDs) produce noise during operation, which affects the device performance. However, the previous research on its noise is mainly theoretical analysis and is only reflected as optical noise. Therefore, according to the characteristics of APD material and the mechanism of noise generation, the main noise of the device is analyzed in this paper. First, the test method of noise
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Deflection characteristics and influencing factors of projectile oblique impact on concrete targets Aip Adv. (IF 1.4) Pub Date : 2024-09-09 Xiangyu Xu, Xigui Tao, Yingxiang Wu, Yunke Lu, Yan Liu, Ji Zhang, Yushuai Zhang
The projectile deflects and even ricochets after an oblique impact on the concrete. However, research on the oblique impact of projectiles on concrete targets mainly focuses on oblique penetration and the critical ricochet angle, and there are few experimental studies on ricochets. Deflection and its influencing factors remain undefined. This study conducted experiments and LS-DYNA numerical simulations
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On the use of reactive multiparticle collision dynamics to gather particulate level information from simulations of epidemic models Aip Adv. (IF 1.4) Pub Date : 2024-09-09 Zaib Un Nisa Memon, Katrin Rohlf
This paper discusses the application of reactive multiparticle collision (RMPC) dynamics, a particle-based method, to epidemic models. First, we consider a susceptible-infectious-recovered framework to obtain data on contacts of susceptibles with infectious people in a population. It is found that the number of contacts increases and the contact duration decreases with increases in the disease transmission
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Low dark current Sb-based short-wavelength infrared photodetector Aip Adv. (IF 1.4) Pub Date : 2024-09-09 Mingming Li, Yifan Cheng, Xiangyu Zhang, Ye Zhang, Dongwei Jiang, Zhigang Song, Wanhua Zheng
We have theoretically and experimentally demonstrated the feasibility of achieving ultra-low dark current in CpBnn type detectors based on a double-barrier InAs/GaSb/AlSb type-II superlattice. By employing a structure that separates the absorption region and depletion region, the diffusion, recombination, tunneling, and surface dark currents of the photodetector (PD) have been suppressed. Experimental
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Non-limited vibrational effect on shock-induced phase transitions of condensed fluid in hard-sphere model Aip Adv. (IF 1.4) Pub Date : 2024-09-09 Yue Zheng, Junjun Xu, Ke Tang
The essence of fluid phase transition is the jump of physical properties distinctly induced by shock waves in the hard-sphere model. Due to the strong impact of the wave, the internal freedoms of molecules are stimulated, releasing tremendous energy that commonly triggers the phase transition. Conversely, typical thermal and dynamic jumps can be described by the Rankine–Hugoniot conditions based on
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Design of wireless charging system for E-Vehicle Aip Adv. (IF 1.4) Pub Date : 2024-09-09 Shweta L. Tiwari, S. R. Gaigowal, Kiran Raut
To address the dual problems of fuel reliance and air pollution, this study describes the design of a wireless ground to vehicle charging system powered by solar energy and specifically designed for electric vehicle (EV) charging stations. As the number of electric vehicles on the road steadily rises, they present a viable way to cut travel expenses by switching from conventional fuel to electricity
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Experimental investigation on the tribo-mechanical behavior of PMMA reinforced by solid lubricant filler for dental implant applications Aip Adv. (IF 1.4) Pub Date : 2024-09-09 Mohamed S. Abdo, Muhammad A. Shar, Ahmed Fouly, Mushtaq A. Dar, Hany S. Abdo
This study investigates the enhancement of mechanical and tribological behavior in polymethyl methacrylate (PMMA) composites reinforced with graphene oxide (GO) as a solid lubricant filler for advanced biomedical applications, particularly dental implants. PMMA/GO composites were prepared with varying weight percentages of GO (0, 0.2, 0.5, 0.7, and 1 wt. %) to assess their impact on material performance
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Graphene–insulator–metal diodes: Enhanced dielectric strength of the Al2O3 barrier Aip Adv. (IF 1.4) Pub Date : 2024-09-06 J. Kunc, T. Fridrišek, M. Shestopalov, J. Jo, K. Park
We studied the transport properties of graphene–insulator–metal tunneling diodes. Two sets of tunneling diodes with Ti–Cu and Cr–Au top contacts are fabricated. Transport measurements showed state-of-the-art non-linearity and a critical influence of the top metals on the dielectric strength of the tunneling barrier. X-ray photoelectron spectroscopy indicated two methods for enhancing the dielectric
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Comprehensive device modeling and performance analysis of (Cs, FA)Pb(I, Br)3 based perovskite–silicon tandem solar cells Aip Adv. (IF 1.4) Pub Date : 2024-09-06 Zhenhui Wu, Zhaoyao Pan, Jinpeng Yang
The utilization of perovskite films as the top subcell to form a perovskite–silicon tandem solar cell has emerged as an attractive approach to achieve higher power conversion efficiency (PCE) that could surpass the Shockley–Queisser limit for single silicon junction. Despite these efforts, precisely understanding and predicting the underlying mechanism necessary for obtaining higher PCE remains a challenging
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Symmetry change of quantum electron solids in double layer MoS2 Aip Adv. (IF 1.4) Pub Date : 2024-09-06 S. T. Chui, Meizhen Huang, Zefei Wu, Ning Wang
Electrons in transition metal dichalcogenides stacked on opposite sides of BN of thickness d can form solids, which have no long range position order but are characterized by a finite shear modulus. The melting temperature Tm is characterized by the occurrence of unbound quantum topological defects. Tm of this solid is four orders of magnitude larger than that of previously studied electron solids
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An upconversion device based on high-performance dual-layer white organic electroluminescent devices Aip Adv. (IF 1.4) Pub Date : 2024-09-06 Weigao Wang, Yiyang Li, Yili Wan, Yu Duan, Hua An, Zhengchun Peng
Large-area imaging techniques in the short-wave infrared spectral region remain a pressing need. Organic light-emitting diodes and infrared photodetectors can be combined to form a near-infrared (NIR) to visible upconversion device, which has great potential to replace traditional infrared imaging systems. The integration of a white organic light-emitting diode (WOLED) with infrared photodetectors
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Unfolding band structure and topological property of 3d transition metal doped monolayer CrTe2: A first-principle calculation Aip Adv. (IF 1.4) Pub Date : 2024-09-06 Pengfei Yan, Guanqi Li, Zhihao Li, Yafei Zhao, Liang He
Owing to their distinctive novel properties, topological metals hold significant promise for application in spintronics, quantum computing, and superconductivity. Using first-principle calculations, we have elucidated the unfolding band structure of 3d transition metal (3d-TM)-doped CrTe2. Notably, our investigation has revealed band crossings in Cu-doped CrTe2, forming a nodal ring near the Fermi
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Improved sensitivity for subsurface imaging by contact resonance atomic force microscopy using Fano peaks Aip Adv. (IF 1.4) Pub Date : 2024-09-06 Yuyang Wang, Mingyu Duan, Yuan-Liu Chen
Subsurface detection using contact resonance atomic force microscopy (CR-AFM) has been well-documented and proven capable of nondestructively detecting subsurface defects at depths of hundreds of nanometers. In CR-AFM, the frequency of the contact resonance mode is often used as the actuating frequency of the probe. However, as many frequencies are available in the probe’s vibrational spectrum, each
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Design of an X-band high efficiency coaxial relativistic backward wave oscillator with permanent magnetic package Aip Adv. (IF 1.4) Pub Date : 2024-09-06 Kaiqi Yang, Fugui Zhou, Dian Zhang, Zhenxing Jin, Yujie Xiang, Tengfang Wang, Wei Zhang
Relativistic backward wave oscillators (RBWOs) have the characteristics of high power and high repetition rate. Reducing the magnetic field strength and the weight of the external permanent magnet (PM) is a significant development direction of RBWOs. In previous research, an X-band RBWO enclosed with a PM has achieved a power efficiency of 50%. However, the PM used in these papers requires a magnetic
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An experimental study of the impact of various infill parameters on the compressive strength of 3D printed PETG/CF Aip Adv. (IF 1.4) Pub Date : 2024-09-06 Shashwath Patil, T. Sathish, Jayant Giri, Bassem F. Felemban
This study examines the effect of different infill patterns and percentages on the compressive strength attributes of carbon fiber-reinforced PETG samples printed using fused deposition modeling, employing response surface methodology. Carbon fiber-enhanced PETG (polyethylene terephthalate glycol) composites represent a cutting-edge advancement in additive manufacturing, drawing significant interest
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Enhanced magnetoresistance induced collaboratively by spin and orbital currents Aip Adv. (IF 1.4) Pub Date : 2024-09-06 Shuyi Yang, Jinnan Liu, Huan Liu, Yongji Li, Wei Zhang, Zhongming Zeng, Zhiyong Quan
Orbital currents in light metals or metal oxides without the strong spin–orbit coupling have become an important means to achieve low-power magnetization switching in spin–orbitronic devices. The orbital magnetoresistance (OMR) originated from orbital current represents a useful strategy to explore the interaction between the orbital angular momentum (OAM) and the local magnetic moment. However, systematic
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Opportunities and challenges of bamboo fiber composites in additive manufacturing: A comprehensive review Aip Adv. (IF 1.4) Pub Date : 2024-09-06 Muthuselvan Balasubramanian, R. Saravanan, T. Sathish, Jayant Giri, Rustem Zairov, S. M. Mozammil Hasnain, Rakhymzhan Turmanov
This study explores the transformative impact of three-dimensional printing, or additive manufacturing, in the development of bamboo-based 3D printing parts. Recently, there has been growing interest in incorporating natural fibers, such as bamboo, into polymers to enhance the structural integrity and strength of 3D-printed polymeric materials. This paper thoroughly examines the opportunities and obstacles
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OpenLabSPM: Bare bone package of LabVIEW-based scanning probe microscope controller Aip Adv. (IF 1.4) Pub Date : 2024-09-05 Hikaru Nomura, Junsuke Yamanishi
With the extensive proliferation of scanning probe microscopy (SPM)-related technologies, there is a growing demand for a fully customizable SPM controller. In response, we have developed an SPM controller that allows users to incorporate additional functions using LabVIEW, a graphical programming language. This controller incorporates fundamental features such as one-dimensional and two-dimensional
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Numerical analysis of thermal performance of various types of horizontal ground heat exchangers Aip Adv. (IF 1.4) Pub Date : 2024-09-05 Nushrat Jahan, Md Hasan Ali, Akio Miyara
In this paper, three types of horizontal ground heat exchangers (GHEs) such as U-tube, spiral, and slinky were numerically analyzed to investigate their thermal performance in cooling mode for 7 days of continuous operation with specific boundary conditions where a rectangular trench of 5 m in length, 2 m in width, and 5 m in depth served as the basis for the modeling of each heat exchanger. The pipe