Article
Physics, Applied
Hong Li, Xinjian Yang
Summary: The proximity effect and finite-quasi-particle-lifetime effect in normal metal/insulator/ferromagnet/f-wave superconductor structures are theoretically investigated. The conductance spectra exhibit a transition from the 0 state to pi state with increasing ferromagnetic exchange energy due the proximity effect. The choice of f-wave pairing potential leads to different tunneling conductance characteristics.
PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS
(2022)
Article
Materials Science, Characterization & Testing
Mingyang Yu, Bin Wang, Bo Li, Boyang Zhang, Qingdong Zhang
Summary: This study developed a multi-channel non-contact stress detection system that can reflect the longitudinal stress inhomogeneity of strip products in the width direction. The simulation model and experimental results proved the feasibility, reliability, and high detection precision of the method.
NONDESTRUCTIVE TESTING AND EVALUATION
(2023)
Article
Engineering, Electrical & Electronic
Xinchao Cui, Chong Lu, Chunping Liu, Wenzhong Liu
Summary: In this paper, a new concept of using magnetic nanoparticles as magneto-optical markers is proposed and a magneto-optical gate effect is explored. A high-sensitivity detection method for magnetic nanoparticles is developed based on this principle.
SENSORS AND ACTUATORS A-PHYSICAL
(2023)
Article
Chemistry, Physical
Hanzhou Wu, Shifeng Fu, Shuhao Wang, Han Pan, Bingting Zha, Anran Gao, Ling Li, Zhen Liu, Lisha Liu, Jie Jiao, M. Bichurin, Oleg Sokolov, Yaojin Wang
Summary: Electrical safety is a significant concern worldwide, and the development of current sensors plays a crucial role in monitoring and maintaining system health.
Article
Materials Science, Multidisciplinary
Chao Yu, Yuhua Wu, Zhi Yang, Xinwu Shu, Hong Xiao
Summary: In this study, the effect of the degree of hard-phase fracture on the mechanical properties of accumulative-roll-bonded metal composite plates was investigated through experimental tests and finite element simulations. The results showed that the fracture of the intermediate Ti layer significantly degraded the mechanical properties, but the more distributed the Ti layer was within the composite plate during accumulative roll bonding, the better were the mechanical properties. Tensile fracture of the composite plate only occurred in the Al phase, and the more compact the Ti distribution, the more severe the tearing and delamination of the Al phase. Through finite element simulations, it was concluded that the shorter the distance between the Ti fragments along the loading direction, the higher the stress and the strain rate, which resulted in premature fracture and degradation of the mechanical properties.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2023)
Article
Materials Science, Multidisciplinary
Henan Fang, Gongzhao Li, Mingwen Xiao, Xudong Huang
Summary: We have studied the tunnel magneto-Seebeck (TMS) effect in magnetic tunnel junctions with a single-crystal barrier using our previously developed extending spintronic theory. The theory is based on optical methods, allowing for a better consideration of the periodicity and coherence of the tunneling process. The results show oscillations of the Seebeck coefficients with the barrier thickness, arising from the diffraction of tunneling electrons by the periodic potential of the single-crystal barrier. The magnitudes of the calculated Seebeck coefficients are consistent with experimental values of intrinsic Joule heating, and the influences of the ferromagnetic electrodes and barrier on the oscillations have been investigated.
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS
(2023)
Article
Engineering, Electrical & Electronic
Liangwei Wu, Yusong Liu, Hao Guo, Huanfei Wen, Zhonghao Li, Jun Tang, Zongmin Ma, Jun Liu
Summary: The new MOEMS accelerometer based on the magneto-optical rotation effect achieves high-precision acceleration measurement by integrating a magnetic film with a magneto-optic crystal. The device was fabricated through structural design, simulation, and micro-nano processing technology. Test results demonstrate excellent noise spectral density and output sensitivity at 1Hz.
IEEE SENSORS JOURNAL
(2022)
Article
Physics, Multidisciplinary
Mansoureh Amanollahi, Mehdi Zamani
Summary: In this paper, a novel structure composed of an all-magneto-optical periodic grating is presented to enhance the transverse magneto-optical Kerr effect (TMOKE), which does not require the use of noble metals. The proposed structure can be utilized for bio-sensing applications by detecting changes in the refractive index of the analyte medium through monitoring of the TMOKE. The advantage of our idea lies in the simultaneous operation of the magneto-optic layer as a sensing layer, leading to extreme TMOKE in a magneto-optical grating.
Article
Engineering, Electrical & Electronic
Yanfeng Li, Xiangdong Gao, Yuquan Chen, Xiaohu Zhou, Yanxi Zhang, Deyong You
Summary: This study achieved high-precision detection and identification of micro gap welds using magneto-optical imaging technology, and established corresponding finite element models and performance analysis methods. Experimental results demonstrated that under optimized detection parameters, MO imaging can be applied for high-precision identification of micro gap weld centers.
IEEE SENSORS JOURNAL
(2021)
Article
Environmental Sciences
Jiayi Luo, Yunqiang Yi, Zhanqiang Fang
Summary: Mn was used to modify magnetic biochar-based catalysts through impregnation-pyrolysis method in order to fully exploit their potential. The reactivity of the synthesized magnetic biochar catalyst was evaluated using metronidazole as the target contaminant. The degradation efficiency of metronidazole in the MMBC/persulfate system was 95.6%, which was 13.0 times higher than that in the MBC/PS system. Surface binding free radicals, center dot OH, and 1O2 were found to play a key role in the degradation of metronidazole in the MMBC/PS system.
Article
Materials Science, Multidisciplinary
M. Haghparast, M. M. Tehranchi, S. M. Hamidi
Summary: Ultrasensitive magnetic field sensors based on magnetoelectric (ME) structures can be used in various applications such as bio-magnetic sensors and magnetoencephalography (MEG) scanners. To achieve enhanced sensitivity, detection limit, and main frequency, accurate simulation methods like finite element method (FEM) are employed. A cantilever-type composite structure composed of galfenol alloy as a magnetostrictive layer and AlN as a piezoelectric layer is used to obtain optimal sensitivity and efficiency. The simulated sensor can measure AC magnetic field with a field resolution of 1 pT, while performing best at a bias DC magnetic field of 2.3 mT and resonance frequency of 2521.8 Hz, with a magnetoelectric coefficient of 4865 (V/cm.Oe).
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS
(2023)
Article
Engineering, Multidisciplinary
Muhammad Sabeel Khan, M. Asif Memon, Ilyas Khan, Sayed M. Eldin
Summary: This article aims to numerically compute the magnetic induced flow in the framework of higher order continuum through its implementation using FreeFem++. The physical response theory of micropolar continuum is taken into consideration and governing dynamics is described in the form of coupled partial differential equations. Different parameters are studied and results are shown through simulations and graphs. It is observed that an increase in micropolar coupling parameter leads to a decrease in magnetic induction and microrotational velocity. The solution becomes unstable when the Hartmann number exceeds 1.5, and an iterative solver should be adopted in this case.
ALEXANDRIA ENGINEERING JOURNAL
(2023)
Article
Physics, Multidisciplinary
Dariush Mehrparvar, Nader Ghobadi, Reza Daqiq
Summary: The tunnel magneto-resistance ratio in spin-filter magnetic tunnel junctions with spin-orbit coupling is investigated using the non-equilibrium Green's function formalism. The transmission function is calculated in the linear-response limit. The results show that spin-filter magnetic tunnel junctions have a larger tunnel magneto-resistance compared to conventional magnetic tunnel junctions due to the presence of a spin-filter layer. Therefore, these findings open up new possibilities for improving spintronics.
Article
Chemistry, Physical
Michal Doroszko
Summary: This study investigates the influence of defects in struts under tension, obtained using the laser powder bed fusion method, on stress and strain distributions. The results show that micronotches on the external surface have a greater impact on stress and strain distribution compared to micropores inside. Additionally, the interactions between defects also affect stress distributions and the formation of high-stress bands inside the material.
Article
Multidisciplinary Sciences
Xuhu Wang, Wang Li, Li Jin, Meimei Gong, Junqiang Wang, Yujie Zhong, Yi Ruan, Chunhong Guo, Chenguang Xin, Mengwei Li
Summary: A high-precision micro-displacement sensor based on tunnel magneto-resistance effect was developed through the design and simulation of magnetic characteristics. The sensor was assembled using chip-level Au-In bonding at low temperatures. The resolution was improved by employing subdivision interpolation technique, and external interference was suppressed using the multi-bridge circuit method. Experimental results showed that the sensor had excellent performance. This work provides significant guidance for the design of micro-displacement sensors in practical applications.
SCIENTIFIC REPORTS
(2022)
Article
Physics, Condensed Matter
Shivani Gohri, Jaya Madan, Rahul Pandey
Summary: This study improves the efficiency of SnS-based solar cells by implementing the glancing angle deposition approach and introducing a CZTSSe layer. The findings offer valuable insights for enhancing the design of SnS-based solar cells and making them more efficient.
SOLID STATE COMMUNICATIONS
(2024)
Article
Physics, Condensed Matter
Mahboubeh Yeganeh, Davoud Vahedi Fakhrabad
Summary: The lattice thermal conductivity of CdO monolayer was investigated, and it was found to be lower than that of bulk CdO due to the lower phonon lifetime and phonon group velocity. As a result, the monolayer exhibits higher thermoelectric efficiency compared to the bulk counterpart.
SOLID STATE COMMUNICATIONS
(2024)
Article
Physics, Condensed Matter
Shivam Srivastava, Prachi Singh, Anjani K. Pandey, Chandra K. Dixit
Summary: In this research paper, a novel equation of state (EOS) based on finite strain theories is proposed for predicting the thermo elastic properties of various materials. Extensive analysis and comparison with existing models and experimental data demonstrate the validity and effectiveness of the proposed EOS in capturing the unique thermodynamic behavior of nanomaterials, bulk metallic glasses, and superconductors. This research is of great importance in the fields of materials science, nanotechnology, and condensed matter physics.
SOLID STATE COMMUNICATIONS
(2024)
Article
Physics, Condensed Matter
Subrata Das, Sanjoy Kr Mahatha, Konstantin Glazyrin, R. Ganesan, Suja Elizabeth, Tirthankar Chakraborty
Summary: In this study, we investigated the structural evolution of Tb2Ti2O7 under external pressure and temperature, and confirmed the occurrence of an isostructural phase transition beyond 10 GPa pressure. This transition leads to changes in lattice parameters and mechanical properties, which can be understood in terms of localized rearrangement of atoms.
SOLID STATE COMMUNICATIONS
(2024)
Article
Physics, Condensed Matter
Hamze Mousavi
Summary: It has been found that undoped graphene sheet has zero states at the Fermi energy level, making it difficult for Cooper pairing to occur in the superconductive state. However, T-graphene, with physical properties similar to graphene, exhibits metallic behavior and has available electron states near the Fermi level. The gap equation for the s-wave superconductive state is derived based on the attractive Hubbard model and the Bogoliubov de Gennes equation for this two-dimensional metallic system. It is found that a nonzero critical temperature, τ, exists for different levels of electron-electron interaction, ǫ. τ has higher values when the system has electronic half band-filling, but decreases when the system does not have half band-filling. However, τ vanishes when ǫ becomes small enough near the band edges.
SOLID STATE COMMUNICATIONS
(2024)
