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Proposal of a novel peeling of nano-particle (PNP) process for localized material removal on a hard material surface by controllable magnetic fields 22

Proposal of a novel peeling of nano-particle (PNP) process f...

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22nd International Conference of the European Society for Precision engineering and Nanotechnology, EUSPEN 2022

作者： Permpatdechakul, Thitipat Khajornrungruang, Panart Suzuki, Keisuke Kutomi, Shotaro Graduate School of Computer Science and System Engineering Mechanical Information Science and Technology Course Kyushu Institute of Technology Fukuoka Japan Department of Intelligent and Control Systems Avanced Mechanical Division Kyushu Institute of Technology Fukuoka Japan School of Computer Science and System Engineering Advanced Mechanical Course Kyushu Institute of Technology Fukuoka Japan

ISBN: (纸本)9781998999118

This article proposes a novel Peeling of Nano-Particle (PNP) process to locally remove material on a hard material surface using controllable magnetic fields. Fe3O4 particles in the size range of 50-100 nm in aqueous solution (pH value 11 adjusted by KOH) were magnetically controlled to adhere and remove from a 4H-SiC surface by two electromagnetic coils, which were sandwiched between the substrate. The particle controlling phenomenon on the surface was experimentally observed and verified by our developed apparatus applying an evanescent field. According to the results, particles could be controlled to approach and remove from the substrate surface with 12mT of magnetic field at the selective area on the substrate surface to realise the proposed PNP process. © European Society for Precision engineering and Nanotechnology, Conference Proceedings - 22nd International Conference and Exhibition, EUSPEN 2022. All rights reserved.

关键词： Magnetic fields

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Development of measurement system and complexity analysis for three-dimensional fish swimming behavior

Development of measurement system and complexity analysis fo...

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2013 52nd Annual Conference of the Society of Instrument and control Engineers of Japan, SICE 2013

作者： Morimoto, Maki Sugino, Ryuzaburo Fukuda, Koji Itami, Shin Morizumi, Noboru Advanced Course of Electricity and Control System Engineering Anan National College of Technology Tokushima Japan Department of Systems and Control System Engineering Anan National College of Technology Tokushima Japan

Understanding of fish's behavior is one of the big subjects in fishery in order to catch the fish effectively. It is important to improve the efficiency of fishery and we must develop the new effective fishing method. The aim of this study is to extract the three-dimensional trajectory of fish swimming behavior. We develop the one of stereo camera system to extract fish trajectory from motion picture images. Furthermore, the chaos and fractal analyses are introduced to explain the complexity of fish behavior as intellectual animal behavior. We show the obtained results of the time series of swimming velocity using its reconstructed data and the effectiveness of 3D chaos and fractal analysis.

关键词： Fish

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Robotic mobile and mirror milling of large-scale complex structures

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National Science Review 2023年第5期10卷 10-13页

作者： Zenghui Xie Fugui Xie Limin Zhu Xin-Jun Liu State Key Laboratory of Tribology in Advanced Equipment Department of Mechanical Engineering(DME) Tsinghua University Beijing Key Lab of Precision/Ultra-precision Manufacturing Equipments and Control Tsinghua University State Key Laboratory of Mechanical System and Vibration School of Mechanical EngineeringShanghai Jiao Tong University

Large-scale complex structures,such as spacecraft cabins,aircraft composite skins and launch vehicle fuel tanks,are the core components of the equipment in aerospace,energy,shipbuilding and other *** milling quality and efficiency are factors directly affecting the performance and productivity of spacecraft,aircraft and other key *** kind of structure generally features large dimension,high accuracy,

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Image reconstruction from point cloud data by CIP-level set method

Image reconstruction from point cloud data by CIP-level set ...

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ICROS-SICE International Joint Conference 2009, ICCAS-SICE 2009

作者： Hironori, Ishimoto Sugino, Ryuzaburo Morizumi, Noboru Advanced Course of Electricity and Control System Engineering Anan National College of Technology Tokushima Japan Systems and Control Engineering Anan National College of Technlogy Tokushima Japan

ISBN: (纸本)9784907764333

Level set method(LSM) is the efficient computation method for the interface capturing with corresponding of advection equation attend topological change of interface. LSM is consisted of the generation of signed distance function from initial interface and the convergence computation of the interface evolution for the target shape using the advection equation in conjunction with the mean curvature flow. We can get the image source from the actual object through the some kinds of distance measurement. The many measured points form the point cloud as the pointing sketch of a object surface. The precision surface model of the object requires that we extract the suitable interface for the purpose from the point cloud data. The extraction is one of image reconstruction. LSM is very useful method to extract the fine surface model from the point cloud data. However, the conventional LSM has some difficalties in the practical computing. In the long time computing, the distance function will be broken up without the frequent reinitialization of it. In this study, we proposed the new computation algorithm in which it is combined the LSM with the CIP scheme. The CIP presents very good performance to keep the shape profile in the advection computing. The obtained results are the various of examples of image reconstruction such as the convex sharp profile, the non-convex profile and the topological changing of profiles. We show the applicability and the effectiveness through the comparison of the CIP scheme with Up-Wind scheme. © 2009 SICE.

关键词： Image reconstruction

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Numerical accuuracy of extraction shape from point cloud using CIP-LSM

Numerical accuuracy of extraction shape from point cloud usi...

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2013 52nd Annual Conference of the Society of Instrument and control Engineers of Japan, SICE 2013

作者： Ishihara, Aoi Sugino, Ryuzaburo Fukuda, Koji Morizumi, Noboru Advanced Course of Electricity and Control System Engineering Anan National College of Technology Tokushima Japan Systems and Control Engineering Anan National College of Technology Tokushima Japan

The Level Set Method (LSM), introduced by S. Osher and J. A. Sethian, is a topological-free active contour model. This method is computational technique that rely on an implicit formulation of an interface, captured by partial differential equation(PDE). In this paper, we propose new computational algorithm which combine LSM with a high accuracy numerical analysis called the Constrained Interpolation Profile (CIP) scheme. We try to make the some numerical experiments that captured a profile from point cloud data, and showed the numerical accuracy of the CIP-LSM in comparison with other numerical schemes.

关键词： Image segmentation

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Experimental research on dynamic characteristics analysis of machine tool based on unit structure

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Revista de la Facultad de Ingenieria 2016年第4期31卷 70-84页

作者： Zhu, Peihao Zheng, Qingchun Hu, Yahui Wang, Bing Chao, Jiaqi Tu, Huan Sun, Ning Li, Jinxiang School of Mechanical Engineering Tianjin University of Technology Tianjin Key Laboratory of the Design and Intelligent Control of the Advanced Mechatronical System Tianjin300384 China

By the experiment modal research for unit structure, the natural frequency and mass of US by means of experimental modal analysis is explored. Experimental modal analysis on US was applied to achieve optimal US simultaneously to satisfy multiple conflicting performance requirements of mass and natural frequency of US. Then the structural parameters of US were optimized to increase natural frequencies and reduce mass. Experimental modal analysis is an efficient technique to accurately identify the dynamic behavior of a structure and provides modal parameters, such as natural frequencies and mode shapes.

关键词： Modal analysis

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Development of walking assist system with dry-ice power cell

Development of walking assist system with dry-ice power cell

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50th Annual Conference on Society of Instrument and control Engineers, SICE 2011

作者： Ishizuka, Hiroki Oyama, Osamu Kitagawa, Ato Post Graduate Course of Mechanical Engineering Meiji University Kanagawa Japan Department of Control and System Engineering Tokyo Institute of Technolgy Tokyo Japan

ISBN: (纸本)9784907764395

A Dry-Ice Power Cell is a portable gas power source. It uses characteristics around the triple point of carbon dioxide. We focus on four characteristics which the Dry-Ice Power Cell has. It is small, light, portable and emits constant pressure gas. Because Dry-Ice is a solid phase of carbon dioxide, it generates a lot of gas for the solid volume. In addition, it is possible to drive without using another electric power supply and can be driven by using environmental heat. If we introduced the Dry-Ice Power Cell into walking assist system, it would be possible to operate the system without motor-driven air compressor. According to the experiment result, the Dry-Ice Power Cell enables the walking duration of system to be longer than another power source such as the air storage vessel. It is confirmed that the Dry-Ice Power Cell has enough capacity to support the walking assist system. © 2011 SICE.

关键词： Carbon dioxide

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Computational algorithm for fish schooling using bitmap image

Computational algorithm for fish schooling using bitmap imag...

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2013 52nd Annual Conference of the Society of Instrument and control Engineers of Japan, SICE 2013

作者： Kushida, Kana Fukuda, Koji Sugino, Ryuzaburo Morizumi, Noboru Advanced Course of Electricity and Control System Engineering Anan National College of Technology Tokushima Japan Department Systems and Control Engineering Anan National College of Technology Tokushima Japan

Some kinds of living creatures like fish, form groups and show aggregate movements. Although there are many papers about the model of fish-like behavior, the comparison with behavior of model and actual fish has not been reported in almost papers. The purpose of this study is to build the model which generates the action similar to behavior of actual fish. The model will be represented as the computer algorithms. And if the algorithm is implemented to the artificial system, the behavior of the system is in agreement with actual fish. In this paper, it is proposed the simple fish behavior model, and built the simulation system to check and evaluate the model. The system simulates the behavior of virtual small robots, and the robots is controlled by the proposed simple fish behavior model. The virtual robot will be received the force from the environment, and every robot which is a part of the environment will exert an influence on the behavior of other robots. To realize this simulation system, bitmap image is used as the force potential field. The value of one place in the potential field is represented by the one pixel's color intensity in the bitmap image. On the other hand, the water tank experiment was conducted using Japanese Horse Mackerel in Tokushima Fisheries Research Institute. The results of the simulation, the robots behave like a school of fish, however the trajectories of robots have the some kind of differences to actual fish swimming. The statistical, chaos and fractal analysis are tried to find the characteristics of robot and fish trajectories. As the results of these analyses of the simulation and experiment, the very interesting trends were recognized about the differences of the trajectories and swimming/moving speed.

关键词： Fish

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engineering grain boundaries in monolayer molybdenum disulfide for efficient water-ion separation

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Science (New York, N.Y.) 2025年第6735期387卷 776-782页

作者： Shen, Jie Aljarb, Areej Cai, Yichen Liu, Xing Min, Jiacheng Wang, Yingge Wang, Qingxiao Zhang, Chenhui Chen, Cailing Hakami, Mariam Fu, Jui-Han Zhang, Hui Li, Guanxing Wang, Xiaoqian Chen, Zhuo Li, Jiaqiang Dong, Xinglong Shih, Kaimin Huang, Kuo-Wei Tung, Vincent Shi, Guosheng Pinnau, Ingo Li, Lain-Jong Han, Yu Physical Sciences and Engineering Division (PSE) King Abdullah University of Science and Technology (KAUST) Thuwal Saudi Arabia School of Materials Science and Engineering Nanyang Technological University 50 Nanyang Avenue Singapore Department of Physics King Abdulaziz University Jeddah Saudi Arabia KAUST Catalysis Center King Abdullah University of Science and Technology (KAUST) Thuwal Saudi Arabia Key Laboratory of Flexible Electronics (KLOFE) and Institute of Advanced Materials (IAM) Nanjing Tech University (NanjingTech) Nanjing China Shanghai Applied Radiation Institute Shanghai Key Laboratory of Atomic Control and Application of Inorganic 2D Supermaterials Shanghai University Shanghai China Department of Mechanical Engineering University of Hong Kong Pok Fu Lam Road Hong Kong China Department of Civil Engineering University of Hong Kong Pok Fu Lam Road Hong Kong China Imaging and Characterization Core Lab King Abdullah University of Science and Technology (KAUST) Thuwal Saudi Arabia Department of Chemical System Engineering School of Engineering University of Tokyo Tokyo Japan Center for Electron Microscopy South China University of Technology Guangzhou China School of Emergent Soft Matter South China University of Technology Guangzhou China Catalyst Center of Excellence (CCoE) Research and Development Center Saudi Aramco Dhahran Saudi Arabia Center for Sustainability and Energy Technologies Chang Gung University Taoyuan Taiwan Key Laboratory of Comprehensive and Highly Efficient Utilization of Salt Lake Resources Qinghai Institute of Salt Lakes Chinese Academy of Sciences Xining Qinghai China University of Chinese Academy of Sciences Wenzhou China

Two-dimensional (2D) materials have long been considered as ideal platforms for developing separation membranes. However, it is difficult to generate uniform subnanometer pores over large areas on 2D materials. We report that the well-defined eight-membered ring (8-MR) pores, typically formed at the boundaries of two antiparallel grains of monolayer molybdenum disulfide (MoS2), can serve as molecular sieves for efficient water-ion separation. The density of grain boundaries and, consequently, the number of 8-MR pores can be tuned by regulating the grain size. Optimized MoS2 membranes outperformed the state-of-the-art membranes in forward osmosis tests by demonstrating both ultrahigh water/sodium chloride selectivity and exceptional water permeance. Creating precise pore structures on atomically thin films through grain boundary engineering presents a promising route for producing membranes suitable for various applications.

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Vibration absorption of parallel-coupled nonlinear energy sink under shock and harmonic excitations

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Applied Mathematics and Mechanics(English Edition) 2021年第8期42卷 1135-1154页

作者： Jian’en CHEN Wei ZHANG Jun LIU Wenhua HU Tianjin Key Laboratory for Advanced Mechatronic System Design and Intelligent Control School of Mechanical EngineeringTianjin University of TechnologyTianjin 300384China National Demonstration Center for Experimental Mechanical and Electrical Engineering Education Tianjin University of TechnologyTianjin 300384China Beijing Key Laboratory of Nonlinear Vibrations and Strength of Mechanical Structures College of Mechanical EngineeringBeijing University of TechnologyBeijing 100124China

Nonlinear energy sink(NES)can passively absorb broadband energy from primary *** multiple NESs connected in parallel exhibit superior performance to single-degree-of-freedom(SDOF)*** this work,a linear coupling spring is installed between two parallel NESs so as to expand the application scope of such vibration *** vibration absorption of the parallel and parallel-coupled NESs and the system response induced by the coupling spring are *** results show that the responses of the system exhibit a significant difference when the heavier cubic oscillators in the NESs have lower stiffness and the lighter cubic oscillators have higher ***,the efficiency of the parallel-coupled NES is higher for medium shocks but lower for small and large shocks than that of the parallel *** parallel-coupled NES also shows superior performance for medium harmonic excitations until higher response branches are *** performance of the parallel-coupled NES and the SDOF NES is *** is found that,regardless of the chosen SDOF NES parameters,the performance of the parallel-coupled NES is similar or superior to that of the SDOF NES in the entire force range.

关键词： coupling influence nonlinear energy sink(NES) vibration absorption

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