Article
Nanoscience & Nanotechnology
Kwangjae Park, Yusuke Hirayama, Jian Wang, Makoto Kobashi
Summary: This study demonstrates the preparation of Sm-Co bulk magnet with remarkable coercivity, excellent temperature coefficient, and thermal stability through the use of unique Sm-Co alloy nanopowder.
SCRIPTA MATERIALIA
(2022)
Article
Engineering, Mechanical
Jiahui Li, Weihao Ma, Xi Hou, Yun Zhang
Summary: This study presents an ultra-smooth surface polishing technology based on elastic material removal, and proposes a multiscale contact area analysis model to study the material removal process and predict the removal profile. The reliability of the model is verified through experiments, and the influence of experimental parameters on the material removal rate is explained.
INTERNATIONAL JOURNAL OF MECHANICAL SCIENCES
(2023)
Article
Engineering, Mechanical
Xuechu Zhao, Liran Ma, Xuefeng Xu
Summary: Experimental observations indicate that particle-surface collisions are the main reason for material removal, with removal modes changing with particle size. Nanoscale particles may remove surface material atom-by-atom, while microscale particles are more likely to cause bulk material removal.
Article
Engineering, Manufacturing
Jiang Xiang-min, Lin Bin, Cao Zhong-chen, Jiang Xiaoxiong
Summary: The paper introduces a novel disc hydrodynamic polishing (DHDP) process and establishes theoretical models for predicting surface topography and guiding the ultra-smooth surface polishing process through derivation and experimental study.
JOURNAL OF MANUFACTURING PROCESSES
(2021)
Article
Engineering, Mechanical
Chang Chen, Rui Zhou, Weijie Sun
Summary: This paper designs a new type of sealed electromagnetic fully closed cutoff valve, and simulates its hydrodynamic characteristics by the computational fluid dynamics method. The cavitation phenomenon inside the valve is analyzed according to different inlet velocities and valve openings. Furthermore, an external magnetic drive control device is designed, and the magnetic field interference and force of the external permanent magnet and the embedded permanent magnet are studied. This study is helpful for the optimization design and practical engineering application of the ultra-clean valve.
JOURNAL OF MECHANICAL SCIENCE AND TECHNOLOGY
(2023)
Article
Engineering, Manufacturing
Jinchuan Tian, Henan Liu, Jian Cheng, Mingjun Chen, Biao Qin, Chuanzhen Ma, Jiangang Sun, Zihan Zhou
Summary: Permanent-magnet small ball-end magnetorheological polishing is commonly used for small glass workpiece processing. This research aims to explain the cause of the polished pit offset phenomenon and establish a material removal rate model. By conducting fixed-point polishing experiments and using finite element method simulation, a novel pressure-shear stress synergistic material removal rate model is established. Optimal model coefficients are determined to minimize the fitting error between simulated and actual contours. The results reveal that both shear stress and dynamic pressure contribute to material removal, with dynamic pressure playing a leading role in causing the offset phenomenon.
JOURNAL OF MANUFACTURING PROCESSES
(2023)
Article
Engineering, Electrical & Electronic
Zhaokai Li, Xiaoyan Huang, Ang Liu, Zixuan Liu, Lijian Wu, Tingna Shi
Summary: This article investigates the air-gap field distribution of the permanent-magnet Vernier machine (PMVM) using a nonlinear exact conformal model (NECM) to account for various effects, and validates the model through experiment.
IEEE TRANSACTIONS ON TRANSPORTATION ELECTRIFICATION
(2022)
Article
Engineering, Electrical & Electronic
Tae-Hyuk Ji, Chan-Ho Kim, Han-Joon Yoon, Nam-Ho Kim, Seok-Won Jung, Yong-Jae Kim, Sang-Yong Jung
Summary: This paper investigates the impact of back yoke design on power density in axial flux permanent magnet motors. By considering the non-saturated part of the cores, the power density can be improved.
JOURNAL OF ELECTRICAL ENGINEERING & TECHNOLOGY
(2023)
Article
Chemistry, Physical
Marianna Pires Barbosa, Tiago Braga Rabello, Eduardo Moreira da Silva
Summary: The present study aimed to analyze the influence of adhesive strategy, the type of dental composite, and polishing time on marginal gap formation at the tooth-composite interface. The results suggest that selective enamel etching (SEE) is a better strategy for reducing marginal gap formation, regardless of the time in which the restoration is polished.
Article
Engineering, Mechanical
Wumao Peng, Yang Gao, Liang Jiang, Jinwei Liu, Linmao Qian
Summary: Smooth surfaces contribute to better lubrication of gears in mechanical systems. Chemical mechanical polishing (CMP) was used in this study to polish 18CrNiMo7-6 case hardening steel, a common material for gears. The results showed that citric acid, when used as a complexing agent, had satisfactory performance without causing corrosion.
Article
Computer Science, Information Systems
Wasiq Ullah, Faisal Khan, Shahid Hussain, Fahad Alturise, Muhammad Yousuf, Siddique Akbar
Summary: This paper proposes a novel Inset Permanent Magnet Consequent Pole Synchronous Machine (IPMCPSM) with H-type modular stator core, which improves the torque, power density, and efficiency, while reducing torque ripple ratio and back-EMF harmonics content. The analysis shows that the proposed IPMCPSM with variable flux gaps and modular topology enhances electromagnetic performance and fault-tolerant capability.
Article
Engineering, Mechanical
Zili Zhang, Chunjin Wang, Jiang Guo, Chi Fai Cheung
Summary: This study investigates the tool mark removal capability of fluid jet polishing (FJP) for micro-channels and explores the effect of initial surface morphology and polishing parameters. Computational fluid dynamics simulation is used to analyze different abrasive impact angles and sizes. The study reveals the material removal characteristics at different stages and provides insights into the polishing performance variations.
TRIBOLOGY INTERNATIONAL
(2023)
Article
Engineering, Electrical & Electronic
Fawen Shen, Yuming Yan, Shuai Wang, Benjamin Cheong Shih Onn, Chandana Jayampathi Gajanayake, Amit Kumar Gupta, Christopher H. T. Lee
Summary: This article investigates a flux-switching machine with U-V-array permanent magnet arrangement and demonstrates that the U-V-array permanent magnets can significantly enhance torque performance.
IEEE TRANSACTIONS ON VEHICULAR TECHNOLOGY
(2023)
Article
Chemistry, Analytical
Ki-Hoon Kim, Dong-Kyun Woo
Summary: This paper presents a fast design optimization method for linear permanent magnet motors (LPMMs) using an effective characteristic analysis. Techniques such as using an auxiliary tooth, PM skew, and overhang structures are employed to improve motor performance. To overcome the complexity in design optimization, an effective magnetic field analysis method and a novel optimization algorithm are proposed. The proposed method is validated through comparison with finite element analysis and experimental results.
Article
Automation & Control Systems
Jinchuan Tian, Henan Liu, Jian Cheng, Mingjun Chen, Biao Qin
Summary: This study proposes a method to improve the efficiency of magnetorheological polishing by water-bath heating and NaOH addition, which promotes chemical reaction and increases the polishing velocity of the magnetorheological fluid. The experimental results show that this method can effectively remove surface defects of fused silica components and reduce material removal time and costs.
INTERNATIONAL JOURNAL OF ADVANCED MANUFACTURING TECHNOLOGY
(2022)
Article
Automation & Control Systems
Fengjun Chen, Jianhang Huang, Jialiang Xu, Huidong Wang, Tian Hu
Summary: This paper proposes a grinding wheel blade wear detection method based on a fiber optic sensor, and studies the principles, hardware system composition, and detection signal triggering process of the method. The influencing factors of detection accuracy and efficiency were analyzed by changing the optical fiber power response mode, brightness setpoint, and signal capture detection speed. The performance verification experiment under optimized parameters showed a maximum measurement error of 3.8 μm, meeting the industrial requirement.
INTERNATIONAL JOURNAL OF ADVANCED MANUFACTURING TECHNOLOGY
(2023)
Article
Polymer Science
Fengjun Chen, Fan Liu, Xiaogang Du
Summary: In this study, the crosslinking process and micro mechanical properties of epoxy resin under the action of an accelerator were investigated using molecular dynamics simulation. The results showed that increasing the crosslinking density can enhance the modulus and glass transition temperature, but decrease the cohesive energy density, solubility, and Poisson's ratio. Moreover, the tensile strength, friction coefficient, temperature, and relative concentration distribution were also affected by the crosslinking density.
JOURNAL OF APPLIED POLYMER SCIENCE
(2023)
Article
Materials Science, Multidisciplinary
Zhuo Liu, Wei Cheng, Dekui Mu, Yueqin Wu, Qiaoli Lin, Xipeng Xu, Han Huang
Summary: The influence of early-stage C diffusion on the microstructures of chromium carbides formed in the solid-state interface reaction was investigated using XPS and TEM techniques. It was found that the catalytically converted disordered carbon (DC) was the first phase formed in the early-stage reaction. Abnormal C diffusion in sputtered Cr was observed for the first time, which affected the interfacial microstructures. The formation behaviors of Cr7C3 and Cr23C6 carbides were examined, and Cr23C6 was found to be the dominant phase formed in the interface reaction. The origin and evolution of crystal twins at grain boundaries between interfacial carbides were also studied using HRTEM.
MATERIALS CHARACTERIZATION
(2023)
Article
Nanoscience & Nanotechnology
Yu Yin, Wangrui Ren, Qiyang Tan, Houwen Chen, Han Huang, Ming-Xing Zhang
Summary: A cost-effective high entropy alloy with a single face-centred cubic matrix is developed to enhance the application potential of cryogenic high entropy alloys. It exhibits temperature-dependent tensile properties, with increased yield strength, tensile strength, and ductility at lower temperatures. The alloy stands out with its relatively low cost, superior strain hardening capacity, and exceptional strength-ductility synergy at 77K, making it a promising material candidate for cryogenic applications.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2023)
Article
Physics, Applied
Dingbang Yang, Junjie Jiang, Jiaxin Chen, Xiao Guo, Xinhui Yang, Xiaoming Zheng, Chuyun Deng, Haipeng Xie, Fei Song, Fangping Ouyang, Xiaoming Yuan, Mingxing Chen, Han Huang
Summary: We fabricated high quality 2D/3D MoS2/MoO2 heterostructures with atomic clean interface using one-step chemical vapor deposition. The study revealed the specific epitaxial relationship between MoS2 and MoO2 and demonstrated the interfacial charge transfer from MoS2 to MoO2. The in-plane anisotropy induced by MoO2 in MoS2 expands the application of isotropic MoS2 in polarization-dependent fields.
APPLIED PHYSICS LETTERS
(2023)
Article
Engineering, Mechanical
Shang Gao, Haoxiang Wang, Han Huang, Renke Kang
Summary: This work investigated the deformation and crack formation of monocrystalline 4H-SiC involved in single grit grinding using molecular dynamics (MD) simulation. The mechanism for crack initiation and propagation in mono-crystalline 4H-SiC was revealed for the first time. Stress analysis demonstrated the driving forces and propagation directions of the cracks.
INTERNATIONAL JOURNAL OF MECHANICAL SCIENCES
(2023)
Article
Materials Science, Multidisciplinary
Zhuo Liu, Wei Cheng, Dekui Mu, Qiaoli Lin, Xipeng Xu, Han Huang
Summary: This study critically examined the solid-state interface reaction between single-crystal synthetic diamond and chromium metal, revealing the role of crystal orientation in the formation and growth of interfacial products. The catalytically converted carbon was found to be formed prior to chromium carbides, contrary to previous studies. The interfacial strain distribution was quantitatively measured, and an improved strain concentration was observed after the ripening of interfacial carbides. The article proposed an approach for tailoring the interfacial microstructure between synthetic diamond and bonding metals.
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
(2023)
Review
Biology
Yian Wang, Qijia Yan, Chunmei Fan, Yongzhen Mo, Yumin Wang, Xiayu Li, Qianjin Liao, Can Guo, Guiyuan Li, Zhaoyang Zeng, Wei Xiong, He Huang
Summary: Cancer is a major cause of death globally, posing a significant burden on society. In China, it is a growing challenge for the healthcare system. This study analyzes recent data on cancer incidence, mortality, and survival rates in China in 2016, identifying key risk factors and discussing potential countermeasures for prevention and treatment.
SCIENCE CHINA-LIFE SCIENCES
(2023)
Article
Chemistry, Physical
Xuliang Li, Zhiqi Fan, Shuiquan Huang, Mingyuan Lu, Han Huang
Summary: Determining the brittle-to-ductile transition (BDT) threshold is crucial for efficient machining processes of brittle materials. This study investigated the effects of tip shape and microstructural variation on the BDT behavior of single-crystal silicon and gallium arsenide. The critical cutting depth for BDT was influenced by both material microstructure and tip shape, with stress distribution and microstructure evolution being impacted. Using a sharp tip, silicon had a slightly smaller critical cutting depth than gallium arsenide, while with a blunt tip, gallium arsenide had a smaller critical cutting depth due to its higher brittleness index and density of crystallite defects.
APPLIED SURFACE SCIENCE
(2023)
Article
Chemistry, Physical
Fengjun Chen, Tixi He, Xin Liu
Summary: In this study, the mechanical and stability performance of composite nanofiltration (NF) membranes were improved by cross-linking sodium alginate (SA) with barium ions to enhance hydrophilicity and separation performance. The impact of SA content, operating pressure, and time on desalination performance was investigated. The prepared NF membranes are of great importance for seawater purification with excellent development potential.
APPLIED SURFACE SCIENCE
(2023)
Article
Chemistry, Multidisciplinary
Fengjun Chen, Xin Liu, Tixi He, Yufang Wang
Summary: A multiscale microflowerstructured surface (MMSS) was successfully fabricated using electrostatic air spray, which shows good superhydrophobic properties with self-cleaning and antifouling abilities. The surface hydrophobicity can be maintained after various damages. Additionally, a new universal droplet transport method is proposed, enabling nondestructive droplet manipulations.
Article
Nanoscience & Nanotechnology
Yu Yin, Qiyang Tan, Nan Yang, Xingrui Chen, Wangrui Ren, Lei Liu, Houwen Chen, Andrej Atrens, Ninshu Ma, Han Huang, Ming-Xing Zhang
Summary: In this study, a cost-effective Fe35Ni35Cr20Mo5Al5 high entropy alloy (HEA) with ultrafine microstructure (UFM) was successfully produced by manipulating the concurrent precipitation and recrystallization process. The UFM-HEA exhibited exceptional mechanical properties, including high yield strength, tensile strength and uniform elongation, as well as superior corrosion resistance compared to 316L stainless steel. This strategy not only provides insights into the development of new-generation cryogenic HEAs, but also enhances their industrial application potential.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2023)
Article
Engineering, Mechanical
Yongqiang Wang, Shuaiyang Zhang, Hao Xia, Yueqin Wu, Han Huang
Summary: This study used molecular dynamics simulation to investigate the cutting of GaN along different crystal orientations. The simulation revealed distinct outcomes for different cutting directions, with enhanced removal efficiency and generation of more dislocations when cutting on a-plane or along the [-2110] direction on m-plane. However, cutting on c-plane or along the [0001] direction on m-plane showed the potential for achieving better surface integrity. This study provides valuable insights into the effect of crystallite orientation on the cutting performance of GaN and demonstrates the importance of appropriate selection of cutting directions for improved surface quality.
INTERNATIONAL JOURNAL OF MECHANICAL SCIENCES
(2023)
Article
Chemistry, Multidisciplinary
Fengjun Chen, Xiaogang Du
Summary: This paper reports the self-assembly phenomenon in near-field electrospinning for the first time, realizing the conversion from two-dimensional planar printing to three-dimensional structures. By adding carbonyl iron powder particles to a polyethylene oxide (PEO) solution, repeatedly stacked fibres form a micropillar array structure (MPAS) with intervals on the deposition paths. The growth process and mechanism of the self-assembled MPAS are documented, and the effects of substrate speed and injection speed are investigated. Electric field distribution simulations show the enhanced electric field strength around the MPAS, allowing for further deposition. Self-assembly in near-field electrospinning can significantly reduce the preparation cost of an MPAS and provide new processes and ideas.
Review
Engineering, Multidisciplinary
James L. Mead, Shiliang Wang, Soeren Zimmermann, Sergej Fatikow, Han Huang
Summary: This review article aims to compile and evaluate recent experimental techniques for characterizing the adhesion behavior of interfaces formed by 1D materials. It discusses the conformation of 1D materials to surfaces, the coupling of adhesion and friction during interfacial attachment and detachment, the use of 1D materials in nanocomposites, and the potential influence of environmental conditions on 1D interfacial interactions. It also provides a brief perspective on ongoing challenges and future directions in the field.
Article
Engineering, Multidisciplinary
Junichi Kouguchi, Hayato Yoshioka
Summary: A new monitoring method for milling process using signal analysis of acceleration sensors is proposed in this research, which can solve the difficulty in estimating cutting forces for small diameter tools.
PRECISION ENGINEERING-JOURNAL OF THE INTERNATIONAL SOCIETIES FOR PRECISION ENGINEERING AND NANOTECHNOLOGY
(2024)
Article
Engineering, Multidisciplinary
Weijie Wang, Yanling Tian, Zhao Zhang, Zhilai Lu, Fujun Wang, Dawei Zhang
Summary: This paper proposes a comprehensive model for predicting the cutting depth and contact area in nanoscratching. The model takes into account the geometric shape of the indenter and elastic recovery, reducing prediction errors. The study also analyzes the influence of the indenter geometry on the contact area, with the face angle of the pyramid identified as a key factor.
PRECISION ENGINEERING-JOURNAL OF THE INTERNATIONAL SOCIETIES FOR PRECISION ENGINEERING AND NANOTECHNOLOGY
(2024)
Article
Engineering, Multidisciplinary
Qiaolin Li, Yuki Shimizu, Xiaohao Wang, Xinghui Li, Wei Gao
Summary: This paper introduces a stitching linear scan method for roundness and diameter measurement of small cylinders, using a ruby ball stylus as hardware filtering to eliminate the influence of high-frequency data. Experimental results show that the repeatability of the ruby ball stylus is better than the diamond stylus.
PRECISION ENGINEERING-JOURNAL OF THE INTERNATIONAL SOCIETIES FOR PRECISION ENGINEERING AND NANOTECHNOLOGY
(2024)
Article
Engineering, Multidisciplinary
Chaturaporn Kerdkaew, Surasak Kaewpho, Sakchai Chomkokard, Theera Yaemglin, Ittipon Cheowanish, Noparit Jinuntuya, Wiwat Wongkokua
Summary: A new calibration standard for a CMOS-based autocollimator using an optical angle generator with a submillimeter strip reflector (OAG-SSR) is proposed. This method provides angular values along the measuring range of the autocollimator without any mechanical movement, enabling a faster calibration process, which is suitable for integration with production lines.
PRECISION ENGINEERING-JOURNAL OF THE INTERNATIONAL SOCIETIES FOR PRECISION ENGINEERING AND NANOTECHNOLOGY
(2024)
Article
Engineering, Multidisciplinary
Haohao Tao, Tongjie Li, Feng Chen, Jinwei Fan, Ri Pan
Summary: In this paper, a novel OTA method is proposed that considers the relationship between tolerance of machine tools' key parts and volumetric error. A volumetric error prediction model is established based on the bridge between geometric error and tolerance. Additionally, a Processing Simplicity Index (PSI) is introduced to replace manufacturing cost and a tolerance-PSI model is established. An OTA model is formulated to minimize volumetric error and maximize PSI. The feasibility and effectiveness of the method are validated through simulations and experiments.
PRECISION ENGINEERING-JOURNAL OF THE INTERNATIONAL SOCIETIES FOR PRECISION ENGINEERING AND NANOTECHNOLOGY
(2024)
Article
Engineering, Multidisciplinary
Xiumin Zhang, Jianhua Liu, Huanxiong Xia, Xiaohui Ao, Jiechen Zhou, Zhihao Fu
Summary: A comprehensive finite-element model was developed in this paper to study the evolution of surface figure in high-precision bonded mirrors. The cure kinetics and mechanical behaviors of the optical adhesive were experimentally examined and modeled, and the effects of environmental factors on the surface-figure accuracy and stability were further investigated.
PRECISION ENGINEERING-JOURNAL OF THE INTERNATIONAL SOCIETIES FOR PRECISION ENGINEERING AND NANOTECHNOLOGY
(2024)
Article
Engineering, Multidisciplinary
Peng Wang, Bin Chen, Jian Li, Jianwei Wang, Yingjie Zhang, Kai Feng
Summary: This paper proposes an aerostatic bearing with damper modules to suppress vibration on the bearing surface. The stiffness and damping characteristics can be adjusted by changing the thickness of the sheets, resulting in effective vibration suppression.
PRECISION ENGINEERING-JOURNAL OF THE INTERNATIONAL SOCIETIES FOR PRECISION ENGINEERING AND NANOTECHNOLOGY
(2024)
Article
Engineering, Multidisciplinary
Lei Yang, Xiaoguang Guo, Renke Kang, Xianglong Zhu, Yufan Jia, Hao Wang
Summary: This paper develops an analytical model that takes into account the pad surface morphology to predict the evolution of the workpiece surface shape. The model considers the cross-scale relationship between the formation of lapped surface shape and the scratching process of a single abrasive grain. The simulated and experimental results validate the correctness and validity of the model, providing new ideas for controlling the workpiece surface.
PRECISION ENGINEERING-JOURNAL OF THE INTERNATIONAL SOCIETIES FOR PRECISION ENGINEERING AND NANOTECHNOLOGY
(2024)
Article
Engineering, Multidisciplinary
Gabriele Piscopo, Alessandro Salmi, Eleonora Atzeni
Summary: This paper proposes an artifact for the LP-DED process and evaluates its dimensional accuracy and geometrical tolerances. The findings show that the tolerances of the LP-DED process are comparable to sand casting, lower than LB-PBF technologies, but similar to EB-PBF technologies.
PRECISION ENGINEERING-JOURNAL OF THE INTERNATIONAL SOCIETIES FOR PRECISION ENGINEERING AND NANOTECHNOLOGY
(2024)
Article
Engineering, Multidisciplinary
Liang Xue, Ningsong Qu
Summary: This study focuses on the key issues of improving material removal rate and surface quality in macro-electrolyte jet machining. By introducing a novel tool with the rear-end tilted, the current density of the workpiece surface can be increased, leading to improved machining performance. Experimental results show that the tool with a rear-end tilt angle of 15 degrees significantly enhances the material removal rate and reduces surface roughness compared to the standard tool.
PRECISION ENGINEERING-JOURNAL OF THE INTERNATIONAL SOCIETIES FOR PRECISION ENGINEERING AND NANOTECHNOLOGY
(2024)
Article
Engineering, Multidisciplinary
Ping Yang, Kaixin Luo, Runxi Wu
Summary: This article proposes a new calibration device to measure the spatial errors of a six-axis serial robot. The device compensates for errors by modifying angles and identifying stiffness parameters, and experiments verify its effectiveness.
PRECISION ENGINEERING-JOURNAL OF THE INTERNATIONAL SOCIETIES FOR PRECISION ENGINEERING AND NANOTECHNOLOGY
(2024)
Article
Engineering, Multidisciplinary
Shilei Wu, Mingxiang Ling, Yingbin Wang, Tao Huang
Summary: This paper studies the electromechanical behavior of elliptical APAs by analyzing the multi-domain dynamics of piezoelectric stacks and compliant mechanisms using a novel electro-mechanical transfer matrix method. An analytical electro-elasto transfer matrix of piezoelectric stacks operating at the d33 mode is derived in the form of Taylor's series. The dynamic response spectrum of displacement and impedance for elliptical APAs is accurately captured by this electro-mechanical model, and different topologies of elliptical APAs are compared to suggest the optimal configuration.
PRECISION ENGINEERING-JOURNAL OF THE INTERNATIONAL SOCIETIES FOR PRECISION ENGINEERING AND NANOTECHNOLOGY
(2024)
Article
Engineering, Multidisciplinary
Lei Meng, Yusheng Liu, Ying Yan, Dongming Guo, Ping Zhou
Summary: This study explores electrochemically induced chemical etching (ECICE) as a method to achieve nanogram-level, low-cost, stress-free, and stable material removal of fused quartz. The key factors affecting removal minimum and stability are revealed through modeling analysis and testing. A proposed method achieves precision stable removal with satisfactory results at the nanogram level.
PRECISION ENGINEERING-JOURNAL OF THE INTERNATIONAL SOCIETIES FOR PRECISION ENGINEERING AND NANOTECHNOLOGY
(2024)
Article
Engineering, Multidisciplinary
Hong Yao, Hai Bi, Junjie Wei, Shuo Zhan, Fangxin Chen, IEEE
Summary: This paper presents a dual-loop control syringe-based picoliter-scale injection system for high-precision microinjection. The system utilizes an inner pneumatic servo loop and an outer position servo loop to achieve precise control. The experimental results demonstrate that the system can regulate the smallest droplet size to within 0.25 pL.
PRECISION ENGINEERING-JOURNAL OF THE INTERNATIONAL SOCIETIES FOR PRECISION ENGINEERING AND NANOTECHNOLOGY
(2024)
Article
Engineering, Multidisciplinary
Jinchun Yuan, Jiasheng Li, Ye Ding
Summary: In this paper, a simple and effective internal model control (IMC) system is proposed to attenuate thrust ripples in ultraprecision air-bearing linear feed systems, based on a modified modeling and identification method of permanent magnet linear synchronous motors (PMLSMs). The performance of the proposed method in overcoming nonlinearity and achieving smooth velocities in steady states is demonstrated through analysis and experiments.
PRECISION ENGINEERING-JOURNAL OF THE INTERNATIONAL SOCIETIES FOR PRECISION ENGINEERING AND NANOTECHNOLOGY
(2024)
