Article
Chemistry, Multidisciplinary
Lin Zeng, Xi Chen, Jing Du, Zitong Yu, Rongrong Zhang, Yi Zhang, Hui Yang
Summary: The study presents a microfluidic system with an ultrahigh magnetic field for label-free separation of nanoscale particles. By utilizing high-permeability alloys and on-chip integrated magnetic micro-pole arrays, the system achieves efficient separation of nanoparticles without the need for labeling procedures, demonstrating high performance in terms of resolution and purity.
Article
Materials Science, Multidisciplinary
Myungjin Park, Tuan-Anh Le, Yaser Hadadian, Jungwon Yoon
Summary: Utilization of the aggregation phenomenon in magnetic nanoparticles (MNPs) under a magnetic field has been considered as an efficient mechanism to overcome the lack of actuation force and low imaging resolution for successful magnetic drug targeting (MDT). This paper analyzes the parameters that influence MDT, including chain length, magnetic field, magnetic field gradient, and flow rate. A MDT simulator has been developed to observe the aggregation phenomenon and targeting performance of magnetic particles. The results show that aggregation volume and targeting performance can be controlled by modulating the external magnetic field and magnetic field gradient.
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS
(2022)
Article
Engineering, Chemical
Jiangang Ku, Jun Xia, Jianzheng Li, Xinling Peng, Bao Guo, Hongxiang Ran
Summary: In this study, the major forces acting on weakly magnetic particles and the ratio between forces in high-gradient magnetic separators were investigated through simulation. The results show that the value of Fm/Fmm varies with magnetic field intensity, particle relative permeability, magnetic field gradient, particle size, and distance between particles. The significance of magnetic agglomeration in HGMS is found to be not significant, and gravity has little effect on high-gradient magnetic separation. HGMS is shown to be a type of high-efficiency magnetic separation equipment.
Article
Engineering, Chemical
Teoman Karadag
Summary: The diffusion capture of submicron-sized particles in the gradient field formed by magnetized ferromagnetic spheres in an external homogeneous magnetic field was theoretically investigated in this study. Magnetic field measurements were conducted using a specifically designed magnetometer prototype. A simple semi-empirical formula for the magnetic force acting on submicron particles was determined, and an analytical solution for the steady-state diffusion equation was obtained. The concentration distribution of the particles in capturing regions was determined, and a formula to evaluate the critical size of the submicron particles captured in this area was derived. The effects of magnetic, hydrodynamic, and geometric parameters on the critical size of the captured particles were evaluated.
PARTICULATE SCIENCE AND TECHNOLOGY
(2023)
Article
Biochemistry & Molecular Biology
Jialin Song, Lijun Jiang, Mingming Qi, Feng Han, Luxia Li, Mei Xu, Yueming Li, Dongliang Zhang, Shifeng Yu, Hongjun Li
Summary: This study found that magnetic field treatment can improve the quality characteristics of dough enriched with potato pulp substitution. The magnetic field treatment enhanced the viscoelasticity and stability of the dough, increased gas retention capacity and wet gluten content.
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
(2024)
Article
Biochemical Research Methods
Roozbeh Abedini-Nassab, Sajjad Bahrami
Summary: This study introduces a novel microfluidic platform for precise manipulation of single particles and magnetized cells, achieving simultaneous transport of multiple particles and demonstrating a curved transportation method. The technology has the potential for applications in the fields of lab-on-a-chip, single-cell biology, and drug screening.
Article
Chemistry, Inorganic & Nuclear
V. H. Tran, M. Sahakyan, R. Idczak
Summary: This study presents measurements and calculations on the noncentrosymmetric Th7Rh3 and (Th7RhE2.5Fe0.5)-Fe-57 superconductors, revealing their superconducting state and electronic properties. The superconducting state of the compounds has been considered in comparison with other Th7T3 (T = Fe, Co, and Ni) superconductors.
JOURNAL OF SOLID STATE CHEMISTRY
(2021)
Article
Polymer Science
Daniele Davino, Marco D'Auria, Roberto Pantani, Luigi Sorrentino
Summary: This paper introduces a new field-structuring process that utilizes a time-profiled magnetic field to control the geometrical features of the particle aggregates in polymeric smart foams. The study shows that the alignment of particles results in a stronger relative sensitivity to the magnetic field and a positive stress change in the smart foams.
Article
Materials Science, Multidisciplinary
Fangping Ye, Hongquan Deng, Zhiqiang Guo, Bing Wei, Xiangjun Ren
Summary: Pulsating high gradient magnetic separation (PHGMS) has been widely used for separating magnetic minerals. Simulations of magnetic field and flow field were conducted to analyze the capture of hematite on the matrix and its dependence on key parameters. The optimized parameters resulted in a high-quality magnetic concentrate in practical application.
RESULTS IN PHYSICS
(2023)
Article
Chemistry, Multidisciplinary
Gang Qin, Ruixuan Zhang, Chendi Yang, Xiaowei Lv, Ke Pei, Liting Yang, Xianhu Liu, Xuefeng Zhang, Renchao Che
Summary: Studies on the diffusion dynamics of magnetic skyrmions have shown their potential in fundamental physics and spintronics applications. This research demonstrates the manipulation and enhancement of diffusion motion of magnetic skyrmions using an oscillatory magnetic field. It also observes the directed diffusion of skyrmions with the introduction of an in-plane field to break the system's symmetry.
Article
Environmental Sciences
L. Makinistian, L. Zastko, A. Tvarozna, L. E. Dias, I Belyaev
Summary: Research suggests that the static magnetic field generated by the use of earphones can have a wide range of exposure and potential biological effects on the human body. With no scientific consensus on the possible mechanisms of interaction with living tissues, caution in using earphones may be advisable.
ENVIRONMENTAL RESEARCH
(2022)
Article
Chemistry, Multidisciplinary
Foo Kean Tham, Wei Ming Ng, Sim Siong Leong, Swee Pin Yeap, Siew Chun Low, Hooi Ling Lee, JitKang Lim
Summary: Monodispersed iron oxide nanoparticles coated with PSS and CTAB were used to stabilize magnetic Pickering emulsions, and their magnetophoresis behavior under a low gradient magnetic field was studied at both macroscopic and microscopic scales. Differences in magnetic separation efficiency and colloidal stability of MPE were observed under different pH conditions.
Article
Instruments & Instrumentation
C. Czichy, S. Odenbach
Summary: A ink made of alginate and methylcellulose with embedded magnetite microparticles was developed for extrusion printing. A defined magnetic field gradient was applied to achieve non-contact deformation. The deformation behavior and material parameters of the hybrid material were investigated using experiments and micro-computed tomography. The results showed that the material is suitable for mechanical stimulation.
SMART MATERIALS AND STRUCTURES
(2023)
Article
Green & Sustainable Science & Technology
Zhigang Liu, Youwen Yang, Cijun Shuai, Chongxian He
Summary: Magnetic field treatment of Fe-Ga alloy can influence its degradation behavior, resulting in faster corrosion rate and lower corrosion resistance.
SUSTAINABLE MATERIALS AND TECHNOLOGIES
(2023)
Article
Chemistry, Analytical
Yulong Ju, Yiwen Yang, Qiukai Tang, Mengqi Wang, Yanbo Zeng, Zulei Zhang, Yunyun Zhai, Hailong Wang, Lei Li
Summary: This study developed a label-free fluorescence aptasensor for the accurate and sensitive detection of alpha-fetoprotein (AFP) in the diagnosis and treatment of liver cancer. The sensor exhibited high sensitivity, high specificity, and the ability to directly detect AFP in actual serum samples.
ANALYTICA CHIMICA ACTA
(2023)
Article
Engineering, Manufacturing
Ziye Wang, Zhipeng Lai, Xiaotao Han, Liang Li
Summary: This study reveals a counterintuitive antisymmetric deformation behavior in electrohydraulic sheet-forming process induced by the positional eccentricity of electrical explosion. Simulations were conducted to understand the dynamics behind this phenomenon, and the results show that shockwave pressure and the inertial force of water medium are two dominant mechanisms. Experimental results confirm these findings. This research contributes to a better understanding of process dynamics and can provide insights for process and equipment design in eccentric explosion electrohydraulic forming.
MATERIALS AND MANUFACTURING PROCESSES
(2023)
Article
Chemistry, Analytical
Liangyu Xia, Ruiqi Liu, Jialuo Liu, Xinhui Zhu, Anzi Ding, Quanliang Cao
Summary: This work introduces the development of radial magneticlevitation (MagLev) using two radially magnetized ring magnets, which effectively solves the limited operational spaces in standard MagLev and the short working distance in axial MagLev. The new configuration of MagLev doubles the working distance of axial MagLev without sacrificing the density measurement range. The radial MagLev demonstrates good applicability in density-based measurement, separation, and detection, and shows advantages in improving separation performance compared to axial MagLev.
ANALYTICAL CHEMISTRY
(2023)
Article
Automation & Control Systems
Pengxin Dong, Jiawei Wu, Quanliang Cao, Qi Chen, Xiaotao Han
Summary: Electromagnetic forming is a rapidly developing technique for high-speed forming of lightweight materials. This study analyzed the thermal effect of eddy current induced in workpieces and the influence of deformation temperature on formability. It was found that the fracture strain of AA5083 first increased and then decreased with increasing temperature, with the maximum fracture strain reaching 30.8%. The optimal deformation temperature range for AA5083 in electromagnetic forming was determined to be 171-211 degrees C. The study also investigated the texture and microstructure evolution, indicating that the temperature within the optimal range promoted dynamic recovery, enhancing the ductility of AA5083. As the temperature increased, dynamic recrystallization replaced dynamic recovery, decreasing the ductility.
INTERNATIONAL JOURNAL OF ADVANCED MANUFACTURING TECHNOLOGY
(2023)
Article
Chemistry, Physical
Xudong Chen, Yutao Ji, Jiajun Yang, Dong Yan, Lichao Jia, Xiaotao Han, Kaiming Wu, Jian Li
Summary: A bottom-access structure stack was developed to enhance the integration of the SOFC stack module and facilitate assembly. Computational fluid dynamics techniques were used to optimize the gas distribution, and the results showed that introducing guide plates and distributors improved flow distribution near the inlet. Increasing the buffer chamber height greatly improved flow distribution uniformity, while excessive height had the opposite effect.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2023)
Article
Materials Science, Multidisciplinary
Gang Lu, Minfu Liao, Ming Zhang, Yifan Sun, Jian Ou, Xiongying Duan, Xiaotao Han
Summary: The paper presents the design and experimentation of a triple-gap laser-triggered vacuum switch (TLTVS). The trigger characteristics of the TLTVS are obtained under different laser energy and operating voltages, and a simplified model for the trigger delay time is established to understand the effect mechanism of laser energy and operating voltage. The experimental results show that increasing laser energy and operating voltage can reduce trigger delay time and jitter time, but their influence mechanisms are different. Laser energy directly affects the trigger characteristics and discharge channel impedance, while operating voltage mainly impacts the field current density.
Article
Materials Science, Multidisciplinary
Ming Zhang, Minfu Liao, Gang Lu, Hui Ma, Qingxin Meng, Xiongying Duan, Xiaotao Han
Summary: The key to promoting the development of triggered vacuum switch lies in an in-depth study on the physical process of its trigger phase, which includes metal electrode melt evaporation, neutral metal vapor layer expansion, electron collision ionization multiplication, and charged particle migration. This paper presents an approximate analytical formulation of the trigger delay time theory based on a one-dimensional heat conduction model and an electron collision ionization multiplication process. Experimental studies on the factors involved in the proposed mathematical description are conducted using a removable vacuum chamber. Theoretical analysis and experimental results support the proposed theoretical model, showing that the trigger current rise rate, main electrode operating voltage, and main electrode gap distance are all factors affecting the trigger delay time.
Article
Engineering, Electrical & Electronic
Jianfeng Xie, Shaozhe Zhang, Jiangtao Shi, Junfeng Wang, Liang Li, Xiaotao Han
Summary: To support advanced scientific research, Wuhan National Pulsed High Magnetic Field Centre (WHMFC) has developed a reconfigurable pulsed high magnetic field facility (PHMFF) capable of generating arbitrary shape magnetic field waveforms. The PHMFF consists of energy storage unit, magnet, transmission circuits, and auxiliary units which can be configured to create different magnetic field systems. A control system with dynamic construction and control sequence reconfiguration has been designed to enable the reconfiguration of magnetic field systems. With this capability, the PHMFF has achieved peak magnetic field of 94.8 T, flat-top magnetic field of 64 T/10 ms, and repetitive magnetic field waveform of 20 T/60 Hz, allowing for various experiments and studies on material properties at WHMFC.
Article
Engineering, Electrical & Electronic
Wenqi Wei, Qinying Liu, Le Yuan, Jian Zhang, Shiyu Liu, Rui Zhou, Yongkang Luo, Xiaotao Han
Summary: The study successfully performed NMR measurements in a high flat-top pulsed magnetic field up to 40 T. A two-stage corrected FTPMF with low fluctuation and long duration was established, along with a suitable NMR spectrometer and sample probe. The results show that the stability and homogeneity of the FTPMF reach a degree of maturity for some researches on condensed matter physics.
IEEE TRANSACTIONS ON INSTRUMENTATION AND MEASUREMENT
(2023)
Article
Automation & Control Systems
Jianpeng Yao, Quanliang Cao, Yuwei Ju, Yuxuan Sun, Ruiqi Liu, Xiaotao Han, Liang Li
Summary: Magnetic soft robots have unique advantages in untethered actuation and controllability, and this study develops an intelligent method based on deep reinforcement learning algorithms to solve the inverse problem of finding workable magnetic fields for strip-like soft robots. The model incorporates magnetic torques and a dissipation force to simulate the dynamics of MSRs, and under the reinforcement learning framework, successfully trains the soft robots to move forward without human guidance. The learned actuation strategies are validated by applying simulated magnetic fields to real MSRs, demonstrating the potential of using reinforcement learning for autonomous actuation of MSRs and establishing a highly adaptive design framework.
ADVANCED INTELLIGENT SYSTEMS
(2023)
Article
Engineering, Electrical & Electronic
Zengwen Wang, Shaozhe Zhang, Houxiu Xiao, Xianfei Chen, Xiaotao Han
Summary: This article examines the impact of pulsed magnet on gyrotrons and proposes design criteria to mitigate the adverse effects of eddy currents.
IEEE TRANSACTIONS ON ELECTRON DEVICES
(2023)
Article
Engineering, Civil
Yifan Huang, Zelin Wu, Pengxin Dong, Runze Liu, Yao Chen, Xiaotao Han
Summary: This paper proposes an EMP method with adjustable initial collision velocity based on the inner-field uniform pressure actuator for manufacturing punched parts of TA1 pure titanium foil sheet. The results show that increasing the collision velocity improves the dimensional accuracy and section quality of punched parts.
ARCHIVES OF CIVIL AND MECHANICAL ENGINEERING
(2023)
Article
Automation & Control Systems
Wenjie Qiu, Jian Zhang, Yongkang Luo, Xiaotao Han
Summary: This article proposes a dual-mode ultrasonic measurement system that enables precise acoustic measurements in high magnetic fields and low temperatures. The system features fast excitations, a wide dynamic range, and real-time precise analysis, making it suitable for various physics experiments and industrial applications.
IEEE TRANSACTIONS ON INDUSTRIAL ELECTRONICS
(2023)
Article
Engineering, Electrical & Electronic
Xianfei Chen, Houxiu Xiao, Yu Huang, Xiaotao Han
Summary: This article investigates the effects of misalignment on the beam-wave interaction in gyrotron oscillators. It is found that misalignment leads to coupling strength loss and additional phase variation, which in turn affects the linear and nonlinear behavior of the gyrotron. The findings of this study provide useful guidance for the design and alignment process of gyrotrons.
IEEE TRANSACTIONS ON ELECTRON DEVICES
(2023)
Article
Engineering, Electrical & Electronic
Jialuo Liu, Anzi Ding, Quanliang Cao
Summary: Magnetic levitation (MagLev) is an emerging technology for density measurement and analysis. This study proposes a new cylindrical MagLev configuration to simplify the analysis of levitation behavior. Theoretical models and numerical simulations are used to demonstrate the performance of the cylindrical MagLev for density measurement.
IEEE TRANSACTIONS ON INSTRUMENTATION AND MEASUREMENT
(2023)
