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| 1 | Control theorem of a universal uniform-rotating magnetic vector for capsule robot in curved environment显示文摘For realizing non-contact steering swimming of a capsule robot in curved environment filled with viscous liquid,based on spatial orthogonal superposition theorem of alternating magnetic vectors,an innovative physical method is proposed,which employs three-axis orthogonal square Helmholtz coils fed with three phase sine currents to create a universal uniform magnetic spin vector as energy source.According to the antiphase sine current superposition theorem generalized in this paper,an effective control method for successively adjusting the orientation and the rotating direction of the universal magnetic spin vector is proposed.For validating its feasibility and controllability,three-axis Helmholtz coils,power source and an innovative capsule robot prototype were manufactured,experiments were conducted in both spiral pipe and animal intestine.It was demonstrated that the orientation and the rotational direction of the universal uniform-magnetic spin vector can be adjusted successively through digital control and steering swimming of the capsule robot in spiral intestine can be achieved successfully.The breakthrough of the universal rotating uniform-magnetic vector will push forward the development of modern physics and biomedical | ZHANG YongShun WANG Na DU ChunYu SUN Ying WANG DianLong | 2013 | Science China(Technological Sciences)2013，56，2： | 16 |
| 2 | The enhanced X-ray Timing and Polarimetry mission—eXTP显示文摘In this paper we present the enhanced X-ray Timing and Polarimetry mission—eXTP. eXTP is a space science mission designed to study fundamental physics under extreme conditions of density, gravity and magnetism. The mission aims at determining the equation of state of matter at supra-nuclear density, measuring effects of QED, and understanding the dynamics of matter in strong-field gravity. In addition to investigating fundamental physics, eXTP will be a very powerful observatory for astrophysics that will provide observations of unprecedented quality on a variety of galactic and extragalactic objects. In particular, its wide field monitoring capabilities will be highly instrumental to detect the electro-magnetic counterparts of gravitational wave sources.The paper provides a detailed description of:(1) the technological and technical aspects, and the expected performance of the instruments of the scientific payload;(2) the elements and functions of the mission, from the spacecraft to the ground segment. | ShuangNan Zhang Andrea Santangelo Marco Feroci YuPeng Xu FangJun Lu Yong Chen Hua Feng Shu Zhang Sφren Brandt Margarita Hernanz Luca Baldini Enrico Bozzo Riccardo Campana Alessandra De Rosa YongWei Dong Yuri Evangelista Vladimir Karas Norbert Meidinger Aline Meuris Kirpal Nandra Teng Pan Giovanni Pareschi Piotr Orleanski QiuShi Huang Stephane Schanne Giorgia Sironi Daniele Spiga Jiri Svoboda Gianpiero Tagliaferri Christoph Tenzer Andrea Vacchi Silvia Zane Dave Walton ZhanShan Wang Berend Winter Xin Wu Jean J.M.in't Zand Mahdi Ahangarianabhari Giovanni Ambrosi Filippo Ambrosino Marco Barbera Stefano Basso Jörg Bayer Ronaldo Bellazzini Pierluigi Bellutti Bruna Bertucci Giuseppe Bertuccio Giacomo Borghi XueLei Cao Franck Cadoux Francesco Ceraudo TianXiang Chen Yu Peng Chen Jerome Chevenez Marta Civitani Wei Cui WeiWei Cui Thomas Dauser Ettore Del Monte Sergio Di Cosimo Sebastian Diebold Victor Doroshenko Michal Dovciak YuanYuan Du Lorenzo Ducci QingMei Fan Yannick Favre Fabio Fuschino JoséLuis Ga'lvez Min Gao MingYu Ge Olivier Gevin Marco Grassi QuanYing Gu YuDong Gu DaWei Han Bin Hong Wei Hu Long Ji ShuMei Jia WeiChun Jiang Thomas Kennedy Ingo Kreykenbohm Irfan Kuvvetli Claudio Labanti Luca Latronico Gang Li MaoShun Li Xian Li Wei Li ZhengWei Li Olivier Limousin HongWei Liu XiaoJing Liu Bo Lu Tao Luo Daniele Macera Piero Malcovati Adrian Martindale Malgorzata Michalska Bin Meng Massimo Minuti Alfredo Morbidini Fabio Muleri Stephane Paltani Emanuele Perinati Antonino Picciotto Claudio Piemonte JinLu Qu Alexandre Rachevski Irina Rashevskaya Jerome Rodriguez Thomas Schanz ZhengXiang Shen LiZhi Sheng JiangBo Song LiMing Song Carmelo Sgro Liang Sun Ying Tan Phil Uttley Bo Wang DianLong Wang GuoFeng Wang Juan Wang LangPing Wang YuSa Wang Anna L.Watts XiangYang Wen Jörn Wilms ShaoLin Xiong JiaWei Yang Sheng Yang YanJi Yang Nian Yu WenDa Zhang Gianluigi Zampa Nicola Zampa Andrzej A.Zdziarski AiMei Zhang ChengMo Zhang Fan Zhang Long Zhang Tong Zhang Yi Zhang XiaoLi Zhang ZiLiang Zhang BaoSheng Zhao ShiJie Zheng Yu Peng Zhou Nicola Zorzi J.Frans Zwart | 2019 | Science China(Physics,Mechanics & Astronomy)2019，62，2： | 11 |
| 3 | Dynamic characteristics of an intestine capsule robot with variable diameter显示文摘This paper proposes an intestine capsule robot with variable diameter. It is driven by external rotating magnetic field and has the function of automatic radial clearance compensation. An external magnetic field generating device and a capsule robot with variable diameter are developed. Radial dynamic balance equation and kinematics equation of the capsule robot traveling inside flexible elasto-wall environment are established, and dynamic characteristics of the capsule robot inside flexible elasto-wall pipe and rigid wall pipe environments are analyzed and compared. Simulations and experiment results show that its dynamic characteristics in both pipes are almost the same. Under the action of radial clearance compensation, fluid dynamic pressure around outer surface of the capsule robot and its propulsion, as well as its adaptability to diameter change range, are significantly improved. Its propulsion and moving speed are controlled by adjusting rotating angular speed of the rotating magnetic field. This innovative capsule robot with radial clearance compensation has a promising prospect for inside intricate gastrointestinal (GI) tract in non-invasive therapy applications. | ZHANG YongShun JIANG ShengYuan ZHANG XueWen YU HongHai WANG DianLong GUO DongMing | 2010 | Chinese Science Bulletin2010，55，17： | 11 |
| 4 | Control strategy for multiple capsule robots in intestine显示文摘Based on the critical gap phenomenon of the intestinal capsule robot,a variable-diameter capsule robot with radial gap self-compensation is developed in this paper.With the functional variation principle,a fluid dynamic pressure model satisfying the boundary conditions of the outer surface of capsule robot with screw blades is derived.The critical gap phenomenon is studied theoretically and experimentally based on the end effect and the dynamic balance characteristics of the fluid on the surface of capsule robot.The concept of start-up rotation speed is defined,the relationship between the start-up rotation speed and the spiral parameters of capsule robot is investigated.The strategy for implementing drive and control on several capsule robots under the same rotational magnetic field is proposed,and by defining the start-up curves of several capsule robots with the similar motion regulation as the objective functions,genetic algorithm is employed to optimize the spiral parameters of several capsule robots.Experiments have shown that the proposed drive and control strategy for several capsule robots can be implemented effectively.It has a good prospect of application inside intestine to realize the drive and control on several capsule robots for different medical purposes. | ZHANG YongShun WANG DianLong RUAN XiaoYan JIANG ShenYuan LU Jie | 2011 | Science China(Technological Sciences)2011，54，11： | 5 |
| 5 | THEORY AND EXPERIMENTAL INVESTIGAION OF FLEXURAL WAVE PROPAGATION IN THIN RECTANGULAR PLATE WITH PERIODIC STRUCTURE显示文摘With the idea of the phononic crystals, a thin rectangular plate with two-dimensional peri-odic structure is designed. Flexural wave band structures of such a plate with infinite structure arecalculated with the plane-wave expansion (PWE) method, and directional band gaps are found in theΓX direction. The acceleration frequency response in the ΓX direction of such a plate with finitestructure is simulated with the finite element method and verified with a vibration experiment. Thefrequency ranges of sharp drops in the calculated and measured acceleration frequency responsecurves are in basic agreement with those in the band structures. Thin plate is a widely used componentin the engineering structures. The existence of band gaps in such periodic structures gives a new ideain vibration control of thin plates. | Wen Jihong Yu Dianlong Wang Gang Zhao Hongang Liu Yaozong | 2005 | Chinese Journal of Mechanical Engineering2005，18，3： | 4 |
| 6 | Powder electrochemical properties with different particle sizes of spinel LiAl_(0.05)Mn_(1.95)O_4 synthesized by sol-gel method显示文摘An Al-doped spinel lithium manganese oxide was prepared by the adipic acid-assisted sol-gel method at 800°C, and the cathode materials (LiAl0.05Mn1.95O4) with different particle sizes were obtained through ball milling. The effects of particle size on the electrochemical performance of LiAl0.05Mn1.95O4 samples were investigated by differential thermal analysis and thermogravimetry, X-ray diffraction, galvanostatic charge-discharge test, cyclic voltammetry, and electro- chemical impedance spectroscopy. The results indicate that all samples with different particle sizes show the same pure spinel phase and good crystal structure; LiAl0.05Mn1.95O4 with D50 = 17.3 μm shows better capacity retention; LiAl0.05Mn1.95O4 cathode materials with small particle size have a bigger resistance of charge transfer than the large one, and the particle size has significant effects on the electrochemical performance of Al-doped spinel LiMn2O4 cathode materials. | YI Tingfeng WANG Dianlong GAO Kun HU Xinguo | 2007 | Rare Metals2007，26，4： | 3 |
| 7 | Characteristics of spatial magnetic torque of an intestine capsule micro robot with a variable diameter显示文摘A drive and control method is put forward for a variable diameter capsule micro robot to screw forward in intestine using magnetic coupling between an inner actuator inside the robot and the rotational magnetic field generated by a rotating outer actuator. The structures of the outer and inner actuators are magnet cylinders with multiple magnetic poles in tegular shape alternating with dissimilar radial magnetization. An universal mathematical model of magnetic torque at eccentric state is established based on the equivalent magnetic charge method, and the characteristics of magnetic torque with respect to structural parameters of actuators are theoretically studied. Experiments show that the driving method features advantages such as powerful magnetic torque, high safety, reliability, etc. The driving ability of the variable diameter capsule micro robot is greatly improved by its automatic radial clearance compensation. The magnetic drive system has a promising prospect of medical applications in intestine. | ZHANG YongShun YUE Ming GUO DongMing WANG DianLong YU HongHai JIANG ShengYuan ZHANG XueWen | 2009 | Science China(Technological Sciences)2009，52，7： | 2 |
| 8 | Optimal Control of a Universal Rotating Magnetic Vector for Petal-shaped Capsule Robot in Curve Environment显示文摘Steering control of a capsule robot in curve environment by magnetic navigation is not yet solved completely.A petal-shaped capsule robot with less steering resistance based on multiple wedge effects is presented,and an optimization method with two processes for determining the orientation of a pre-applied universal magnetic spin vector is proposed.To realize quick and non-contact steering swimming,a fuzzy comprehensive evaluation method for optimizing the steering driving angle is presented based on two evaluation indexes including the average steering speed and the average steering trajectory deviation,achieving the initial optimal orientation of a universal magnetic spin vector.To further reduce robotic magnetic vibration,a main target method for optimizing its final orientation,which is used for fine adjustment,is employed under the constrains of the magnetic moments.Swimming experimental results in curve pipe verified the effectiveness of the optimization method,which can be effectively used to realize non-contact steering swimming of the petal-shaped robot and reduce its vibration. | ZHANG Yongshun BAI Jianwei CHI Minglu CHENG Cunxin WANG Dianlong | 2014 | Chinese Journal of Mechanical Engineering2014，27，5： | 2 |
| 9 | Study on the vibration band gap and vibration attenuation property of phononic crystals显示文摘Phononic crystals (PCs) are functional materials with periodic structures and elas- tic wave (vibration) band gaps, where propagation of vibrations with frequencies within band gaps is forbidden. PCs with finite periods can restrain the propagation of vibrations with frequencies in band gaps and thus has vibration attenuation property. Worldwide, many institutions and researchers are engaged in the re- search of PCs, however, studies on the vibration attenuation property of PCs are still limited. In this paper, we report our study of band gaps and vibration attenua- tion properties of 1) a simplified PC—periodic mass-spring structures, 2) longitu- dinal vibration of one-dimensional (1D-), 2D-, 3D-PCs, and 3) the flexural vibration of 1D- and 2D-PCs. These studies provide a foundation for the applications of PCs in vibration attenuation. | WEN JiHong WANG Gang YU DianLong ZHAO HongGang LIU YaoZong WEN XiSen | 2008 | Science China(Technological Sciences)2008，51，1： | 2 |
| 10 | Communication-Based Attacks Detection in Android Applications显示文摘The Android operating system provides a rich Inter-Component Communication(ICC) method that brings enormous convenience. However, the Android ICC also increases security risks. To address this problem, a formal method is proposed to model and detect inter-component communication behavior in Android applications. Firstly,we generate data flow graphs and data facts for each component through component-level data flow analysis.Secondly, our approach treats ICC just like method calls. After analyzing the fields and data dependencies of the intent, we identify the ICC caller and callee, track the data flow between them, and construct the ICC model. Thirdly,the behavior model of Android applications is constructed by a formal mapping method for component data flow graph based on Pi calculus. The runtime sensitive path trigger detection algorithm is then given. Communicationbased attacks are detected by analyzing intent abnormity. Finally, we analyze the modeling and detection efficiency,and compare it with relevant methods. Analysis of 57 real-world applications partly verifies the effectiveness of the proposed method. | Chuan Ma Tao Wang Limin Shen Dongkui Liang Shuping Chen Dianlong You | 2019 | Tsinghua Science and Technology2019，24，5： | 2 |
| 11 | Propagation of flexural wave in periodic beam on elastic foundations显示文摘 | Dianlong Yu Jihong Wen Huijie Shen Yong Xiao Xisen Wen | 2011 | Physics Letters A2011，，4： | 1 |
| 12 | Vibration reduction by using the idea of phononic crystals in a pipe-conveying fluid显示文摘 | YU Dianlong WEN Jihong ZHAO Honggang | 2008 | Journal of Sound and Vibration2008，318，25： | 1 |
| 13 | The use of nanome- tetrabasic lead sulfate as positive active material additive for valve regulated lead-acid battery显示文摘 | Lang Xiaoshi Wang Dianlong Hu Chiyu | 2014 | Journal of Power Sources2014，270，： | 1 |
| 14 | One-dimen sional phoronic crystals with locally resonant struc- tures显示文摘 | WAN(} Gang YU Dianlong WEN Jihong | 2004 | Physics Letters A2004，327，56： | 1 |
| 15 | Sponta- neous vesicle formation from trisiloxmae - tailed Gemini surfactant 显示文摘 | WANG GUOYONG ZHANG DIANLONG DU ZHIPING | 2014 | Journal of Molecular Liquids2014，20，： | 1 |
| 16 | One-dimensional phononic crystals with locally resonant structures显示文摘 | Wang Gang Yu Dianlong Wen Jihong | | 0，，5： | 1 |
| 17 | Developing Network Management Ap p-lications in An Application-oriented Way Using Mobile Agent显示文摘 | Zhang Dianlong Zorn W | 1998 | Computer Networks and ISDN Systems1998，30，： | 1 |
| 18 | Theoretical study of two-dimensional phononic crystals with viscoelasticity based on fractional derivative mod- els显示文摘 | LIU Yaozong YU Dianlong ZHAO Honggang | 2008 | Journal of Physics: D Applied Physics2008，41，06： | 1 |
| 19 | One-dimensional phononic crystals with locally resonant structures显示文摘 | WANG Gang YU Dianlong WEN Jihong | 2004 | Physics Letter A2004，327，： | 1 |
| 20 | Study of Co-Ce coating and surface on pasted nickel electrodes substrate显示文摘The process of electroplating Co-Ce alloys on the nickel foam framework surface can improve electro-conductivity for active materials and nickel substrate interface. The results of inductive coupled plasma emission spectrometer (ICP), cyclic voltammetry (CV), scanning electron microscopy (SEM), X-ray diffraction (XRD) and electron probe microanalysis (EPMA) indicate that the Co-Ce coating chemical content of rare earth Ce 0.19wt.%-0.28wt.% can not only alter the microstructure of electroplating coating, but also accelerate the oxidation reaction of Co and improve its transfer rate of electric current conductivity to the active material particles. The grads-like distributing electro-conductive network of CoOOH is formed on the nickel substrate surface, which improves reversibility of pasted nickel electrode. The charging receptivity is improved by Co-Ce coating on the pasted nickel electrode substrate, and its specific discharging capacity is improved by 50%. | WANG Dianlong WANG Chunyu DAI Changsong SUN Dezhi | 2006 | Rare Metals2006，25，z1： | 1 |
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