Article
Engineering, Chemical
Jun Xie, Chengqian Zhang, Yuhan Jia, Jianzhong Fu, Peng Zhao
Summary: This paper proposes a novel continuous separation method based on magneto-Archimedes levitation to handle multiple plastics. Experimental results demonstrate its high efficiency in separating different plastics, along with the additional advantages of low cost and no energy consumption.
SEPARATION AND PURIFICATION TECHNOLOGY
(2022)
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)
Article
Engineering, Electrical & Electronic
Eizo Ushijima, Satoshi Fujimoto, Kazuo Nakazato
Summary: In this study, a magnetic particle-arrangement technology based on magneto-Archimedes levitation was proposed to achieve rapid on-site identification of pathogenic microorganisms. By pouring a medium with highly adjusted K-3[Fe(CN)(6)] concentration over a complementary metal oxide semiconductor (CMOS) sensor array surface, successful arrangement of microparticles was achieved. Experimental results demonstrated that a uniform local molecular-recognition-element reaction field was formed in most channels of the CMOS sensor array, indicating high accuracy in particle arrangement.
SENSORS AND ACTUATORS A-PHYSICAL
(2021)
Article
Materials Science, Characterization & Testing
Peng Zhao, Yuhan Jia, Jun Xie, Tingyu Wang, Chenqian Zhang, Jianzhong Fu
Summary: A novel MagLev device using magnet arrays is proposed to replace the whole permanent magnet, providing a promising method for levitation of large-scale samples. The simulation results can obtain the equation between density and levitation height, showcasing the potential for accurate measurement of various polymer densities.
Article
Chemistry, Multidisciplinary
Samuel E. Root, Rui Gao, Christoffer K. Abrahamsson, Mohamad S. Kodaimati, Shencheng Ge, George M. Whitesides
Summary: This article introduces a new technique, magneto-Archimedes levitation (MagLev), for estimating the density of hydrophobic polymer thin films, and validates its reliability in different thickness ranges. By comparing density measurements of various polymer films with their bulk values, apparent changes in film density were observed as thickness varied, providing a new approach for studying polymer films.
Article
Engineering, Chemical
L. C. Thijs, J. G. M. Kuerten, J. C. H. Zeegers, S. Tajfirooz
Summary: Magnetic density separation (MDS) is a technique for separating granular materials based on mass density. The study investigates the effect of honeycomb wake turbulence on the motion of almost neutrally buoyant spherical particles in a magnetized fluid. It is shown that the honeycomb-generated wake turbulence increases the levitation time of the particles. The effects of honeycomb geometry and cell Reynolds number on the collective motion of particles and turbulence properties are investigated.
CHEMICAL ENGINEERING SCIENCE
(2023)
Review
Chemistry, Analytical
Jun Xie, Peng Zhao, Chengqian Zhang, Jianzhong Fu, Lih-Sheng Turng
Summary: Magnetic levitation is an accurate and sensitive density testing method with potential applications in various fields. Research has focused on developing the theory and applications of MagLev, especially in the realm of polymers.
SENSORS AND ACTUATORS B-CHEMICAL
(2021)
Article
Physics, Applied
Mahdi Rezayati Charan, Filip Berg, Per Augustsson
Summary: Acoustic separation of suspension cells can be achieved by altering the properties of the cell medium. This paper focuses on studying the interplay of acoustic radiation, acoustic streaming, and buoyancy in near-zero acoustic contrast and how it affects cell separation. Experimental cell trajectories are measured and analyzed, and a neural network is developed to classify them based on acoustic contrast.
PHYSICAL REVIEW APPLIED
(2023)
Article
Engineering, Electrical & Electronic
Rhinithaa P. Thanalakshme, Ali Kanj, JunHwan Kim, Elias Wilken-Resman, Jiheng Jing, Inbar H. Grinberg, Jennifer T. Bernhard, Sameh Tawfick, Gaurav Bahl
Summary: This article introduces the design principles and operating methods of resonant magneto-mechanical transmitters for ultralow frequency wireless communication. Two different types of transmitter designs are experimentally demonstrated, and the nonlinear electro-mechanical dynamics of the transmitters are studied. Techniques for controlling the operating frequency are explored through experiments, and amplitude modulation up to 10 bits-per-second is achieved.
IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION
(2022)
Article
Engineering, Environmental
Chengqian Zhang, Daofan Tang, Mingyi Cao, Fu Gu, Xiangyu Cai, Xuetao Liu, Zhaoyu Cheng, Philip Hall, Jianzhong Fu, Peng Zhao
Summary: The MagLev configuration proposed in this study can separate substances with specific densities over 5.00 g/cm(3), showing great potential in heavy metal recycling by effectively separating different metal materials with high recovery rates and purities.
RESOURCES CONSERVATION AND RECYCLING
(2021)
Article
Chemistry, Analytical
Chenxin Lyu, Daofan Tang, Chengqian Zhang, Jun Xie, Qingyan Zhang, Jing Nie, Yong He, Jianzhong Fu, Jingdai Wang, Peng Zhao
Summary: This paper proposes an original non-contact manipulation and measurement method by magnetic levitation for cells. The method allows cells to aggregate and levitate in a paramagnetic medium using two ring magnets with like poles facing each other. The mathematical model was established to analyze the distributions of magnetic fields and movements of cells. The results demonstrate the potential of the magnetic levitation method for three-dimensional culture and rapid measurement of cells.
SENSORS AND ACTUATORS B-CHEMICAL
(2023)
Article
Crystallography
Tongzhuang Niu, Junfeng Xu, Zhirui Yao, Zengyun Jian, Peter K. Galenko
Summary: This article proposes a method for measuring and analyzing the volume and density changes in high-temperature alloy melts using high-speed photography and computer MATLAB program image analysis technology. These techniques will aid in understanding the variations in the volume and density of high-temperature melt samples during the phase transition process.
Article
Engineering, Mechanical
Yuhan Jia, Peng Zhao, Jun Xie, Xuechun Zhang, Hongwei Zhou, Jianzhong Fu
Summary: This paper introduces a single-electromagnet levitation device for measuring densities and detecting internal defects of antimagnetic materials. Compared to traditional magnetic levitation devices, this adjustable device has a wider measuring range and strong magnetic field, allowing for accurate density measurement and defect detection of high-density materials like glass and aluminum alloy.
FRONTIERS OF MECHANICAL ENGINEERING
(2021)
Article
Engineering, Mechanical
Mengyi Ren, Koichi Oka
Summary: A noncontact torsion testing device using magnetic levitation technology was developed. The device utilizes a permanent magnetic gear to transmit noncontact torque to a specimen, and utilizes electromagnets and magnetic bearings to achieve levitation. A plant model considering the effect of the magnetic bearings was built, and PD controllers were designed and simulated based on the model. Experiments confirmed the feasibility of the device, which can apply a torque of 0.126 N·m to the specimen while maintaining levitation.
Article
Chemistry, Multidisciplinary
Liang Huang, Yuxing Zhang, Tao Liao, Kui Xu, Chenxing Jiang, Dinglv Zhuo, Yang Wang, Hui-Min Wen, Jing Wang, Lijiao Ao, Jun Hu
Summary: Exploring signal amplification strategies for lateral flow immunoassay is important for point-of-care testing. A highly-sensitive LFIA platform using magneto-fluorescent assemblies was demonstrated, allowing for detection of low-concentrated targets.
Article
Polymer Science
Zhengyang Dong, Peng Zhao, Jianguo Zheng, Kaipeng Ji, Yuhong Chen, Jianzhong Fu
Summary: The proposed IGAO method utilizes batch information for self-learning without establishing a large number of experimental models, with fast convergence, 25% fewer steps, good stability, and is suitable for parameter optimization in batch processes.
JOURNAL OF APPLIED POLYMER SCIENCE
(2021)
Article
Materials Science, Characterization & Testing
Peng Zhao, Yuhan Jia, Jun Xie, Tingyu Wang, Chenqian Zhang, Jianzhong Fu
Summary: A novel MagLev device using magnet arrays is proposed to replace the whole permanent magnet, providing a promising method for levitation of large-scale samples. The simulation results can obtain the equation between density and levitation height, showcasing the potential for accurate measurement of various polymer densities.
Article
Engineering, Electrical & Electronic
Xuechun Zhang, Hao Hu, Daofan Tang, Chengqian Zhang, Jianzhong Fu, Peng Zhao
Summary: A flexible tactile sensor based on the magnetic field was proposed in this study, which can linearly detect both force and position and perform quick tests in variable patterns. By introducing folding magnetization technology, higher magnetic flux density can be achieved and different sensor designs can be implemented.
SENSORS AND ACTUATORS A-PHYSICAL
(2021)
Article
Polymer Science
Ruoxiang Gao, Jun Xie, Jinghui Yang, Chaojie Zhuo, Jianzhong Fu, Peng Zhao
Summary: By conducting single factor experiments, the impact of raster angle and infill density on PEEK parts was determined, while orthogonal experiments were used to analyze the effects of printing speed, nozzle temperature, and other parameters. Through optimization, significant reductions in warpage deformation and improvements in tensile strength were achieved, supporting the development of FDM for PEEK.
Review
Chemistry, Multidisciplinary
Chenxin Lyu, Peng Zhao, Jun Xie, Shuyuan Dong, Jiawei Liu, Chengchen Rao, Jianzhong Fu
Summary: Nanofibrous membrane, especially those fabricated by electrospinning, is considered as an effective filter medium for particulate matter in air purification. These membranes exhibit good PM2.5 filtration performance and multi-functions, making them suitable for various applications against PM2.5 pollution.
Article
Engineering, Environmental
Chengqian Zhang, Daofan Tang, Mingyi Cao, Fu Gu, Xiangyu Cai, Xuetao Liu, Zhaoyu Cheng, Philip Hall, Jianzhong Fu, Peng Zhao
Summary: The MagLev configuration proposed in this study can separate substances with specific densities over 5.00 g/cm(3), showing great potential in heavy metal recycling by effectively separating different metal materials with high recovery rates and purities.
RESOURCES CONSERVATION AND RECYCLING
(2021)
Article
Materials Science, Composites
Ruoxiang Gao, Hao Chen, Zhezai Hu, Xuewen Cheng, Shiquan Gao, Shaohua Zhou, Peng Zhao
Summary: This study presents a novel method for predicting product strength by analyzing weld line and fiber orientation in injection molding, and successfully applies it to the gate design of an aerospace product. The results indicate that this method has great potential for mold design, product structure design, and process optimization.
POLYMER COMPOSITES
(2022)
Article
Materials Science, Multidisciplinary
Jinghui Yang, Jun Xie, Kaipeng Ji, Xianghong Wang, Xiaolong Jiao, Zhinong Xu, Peng Zhao
Summary: Microcellular PEEK with a weight reduction of 49.6% was prepared by mold-opening microcellular injection molding (MOMIM). Incremental holding time and holding pressure could increase PEEK's density and promote the formation of dense cells, improving mechanical properties.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2022)
Article
Engineering, Electrical & Electronic
Junye Huang, Peng Zhao, Chengqian Zhang, Jun Xie, Neng Xia, Jianzhong Fu
Summary: This article proposes a method to analyze the diamagnetic forces sustained by levitated pyrolytic graphite (PG) in order to investigate the mechanism of stable levitation. By dividing the PG disk into multiple regions, the resultant diamagnetic force can be determined, and the relationship between the size of the magnet and the disk and its ability of stable levitation is clarified.
IEEE TRANSACTIONS ON MAGNETICS
(2022)
Article
Engineering, Multidisciplinary
Chaojie Zhuo, Kaipeng Ji, Jun Xie, Xuewen Cheng, Xiaolong Jiao, Sheng Ye, Jianzhong Fu, Peng Zhao
Summary: This study proposes a non-intrusive ultrasonic measurement method based on minimum entropy blind deconvolution for measuring tie-bar stress in molding equipment. The results show that the method has high precision and low relative error. Compared to traditional methods, this approach does not require human intervention and helps achieve automation in stress measurement.
MEASUREMENT SCIENCE AND TECHNOLOGY
(2022)
Article
Mathematics, Applied
Kaipeng Ji, Peng Zhao, Xiaowei Zhou, Yuhong Chen, Zhengyang Dong, Jianguo Zheng, Jianzhong Fu, Huamin Zhou
Summary: This paper proposes a novel initialization method, UPPSO, for particle swarm optimization (PSO), which improves optimization performance by uniformly distributing particle positions and velocities in the response space. When applied to parameter estimation, UPPSO outperforms other algorithms in obtaining optimal parameters and exhibits competitive computational performance.
APPLIED MATHEMATICS AND COMPUTATION
(2022)
Article
Polymer Science
Xuemei Li, Fan Liu, Jun Xie, Chengqian Zhang, Ruoxiang Gao, Chenxin Lyu, Peng Zhao
Summary: This study aims to reduce the metallic impurities of parts and improve the wet processes environment. The impurities distribution of injection molds was examined, showing even distribution. The influence of process parameters on metallic contamination was investigated through orthogonal experiment, with injection rate having the greatest impact. By optimizing the process, the smallest metallic contamination of 1.077 μg/m² for PFA pipe joints was achieved, reducing by 56.3% compared with previous results. This research suggests that adjusting parameters is a feasible and effective method to reduce contamination during injection molding, providing another idea for improving cleanliness in chip manufacturing.
JOURNAL OF APPLIED POLYMER SCIENCE
(2023)
Article
Materials Science, Multidisciplinary
Zhengchuan Guo, Jun Xie, Chengqian Zhang, Ying Zheng, Liang Jin, Jinghui Yang, Peng Zhao
Summary: In this study, a post-treatment method was applied to enhance the tensile strength of PEEK fibers, generating up to a 69% increase. Optical measurements, uniaxial tensile tests, differential scanning calorimetry, and two-dimensional-wide angle X-ray diffraction were used to quantitatively investigate the effects of post-treatment process parameters on the diameter shrinkage ratio, mechanical properties, and aggregated state structure of PEEK fibers. The findings revealed that the improved fiber orientation, resulting from increased post-treatment temperature and constant tensile force, was the main factor contributing to the significant increase in uniaxial tensile strength. Moreover, mathematical models were developed to describe the linear relationship between the diameter shrinkage ratio and post-treatment temperature, as well as the uniaxial tensile strength and constant tensile force. These insights offer valuable guidance for enhancing the strength and controlling the morphology and mechanical properties of PEEK fibers during production.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2023)
Article
Materials Science, Multidisciplinary
Zhengchuan Guo, Jun Xie, Jinghui Yang, Jianzhong Fu, Peng Zhao
Summary: Polyether ether ketone (PEEK), a high-performance polymer, is widely used as an ideal metal replacement. This study introduces a rapid mold temperature rising technology based on induction heating, which effectively meets the requirements of rapid temperature increase and maintenance for PEEK injection molding. The experimental results show that compared to traditional electric heating, the induction heating method significantly improves the surface quality and mechanical properties of PEEK products, and it also shows adaptability to longer holding times for micro-open microporous injection molding, expanding the possibilities for developing higher performance PEEK foam products.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2023)
Review
Optics
M. Munzer Alseed, Sajjad Rahmani Dabbagh, Peng Zhao, Oguzhan Ozcan, Savas Tasoglu
Summary: Magnetic levitation is a density-based technique that suspends objects using magnetic and gravitational forces. Recent advancements in portable smartphone-based MagLev setups have enabled applications in microparticle sorting, disease diagnosis, and other fields, making the technology more accessible and user-friendly.
ADVANCED OPTICAL TECHNOLOGIES
(2021)