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Regulation on Morphology and Electronic Structure Design of Vanadium-Based Sodium Phosphate Cathodes for High-Performance Sodium-Ion Batteries 认领 引用 被引量：1
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作者 Xinran Qi Baoxiu Hou +11 位作者 Ruifang Zhang Xiaocui Chen Zhenrong Fu Xin Zhou Haiyan Liu Ningzhao Shang Shuaihua Zhang Longgang Wang Chunsheng Li Jianjun Song Shuangqiang Chen Xiaoxian Zhao 《Carbon Energy》 SCIE EI CSCD 2025年第9期66-97,共32页
Sodium-ion batteries have emerged as promising candidates for next-generation large-scale energy storage systems due to the abundance of sodium resources,low solvation energy,and cost-effectiveness.Among the available... Sodium-ion batteries have emerged as promising candidates for next-generation large-scale energy storage systems due to the abundance of sodium resources,low solvation energy,and cost-effectiveness.Among the available cathode materials,vanadium-based sodium phosphate cathodes are particularly notable for their high operating voltage,excellent thermal stability,and superior cycling performance.However,these materials face significant challenges,including sluggish reaction kinetics,the toxicity of vanadium,and poor electronic conductivity.To overcome these limitations and enhance electrochemical performance,various strategies have been explored.These include morphology regulation via diverse synthesis routes and electronic structure optimization through metal doping,which effectively improve the diffusion of Na+and electrons in vanadium-based phosphate cathodes.This review provides a comprehensive overview of the challenges associated with V-based polyanion cathodes and examines the role of morphology and electronic structure design in enhancing performance.Key vanadium-based phosphate frameworks,such as orthophosphates(Na3V2(PO4)3),pyrophosphates(NaVP2O7,Na2(VO)P2O7,Na7V3(P2O7)4),and mixed phosphates(Na7V4(P2O7)4PO4),are discussed in detail,highlighting recent advances and insights into their structure-property relationships.The design of cathode material morphology offers an effective approach to optimizing material structures,compositions,porosity,and ion/electron diffusion pathways.Simultaneously,electronic structure tuning through element doping allows for the regulation of band structures,electron distribution,diffusion barriers,and the intrinsic conductivity of phosphate compounds.Addressing the challenges associated with vanadium-based sodium phosphate cathode materials,this study proposes feasible solutions and outlines future research directions toward advancement of high-performance vanadium-based polyanion cathodes. 展开更多
关键词 cathode element doping sodium-ion batteries structural design vanadium-based phosphate
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Application of Mind Map-Based Fragmented Learning Model in Teaching“Principles of Concrete Structure Design” 认领 引用
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作者 Chubing Zhou 《Journal of Contemporary Educational Research》 2025年第12期126-131,共6页
Amid the digital transformation,fragmented learning has gradually become a mainstream learning method due to its flexibility.As a core course for civil engineering majors,“Principles of Concrete Structure Design”has... Amid the digital transformation,fragmented learning has gradually become a mainstream learning method due to its flexibility.As a core course for civil engineering majors,“Principles of Concrete Structure Design”has a complex and abstract knowledge system,making it difficult for traditional teaching models to meet students’personalized learning needs.Focusing on this course,this paper explores the application of a fragmented learning model based on mind maps from multiple dimensions,including its value,principles,and implementation methods.This study aims to provide new ideas and methods for improving the effectiveness of teaching this course and helping students master the knowledge. 展开更多
关键词 Mind map Fragmented learning Principles of concrete structure design Course instruction
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Research on Optimization Strategies of Sheet Metal Materials in Mechanical Processing Structure Design 认领 引用
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作者 Yiheng Xu 《Journal of Electronic Research and Application》 2025年第7期158-164,共7页
This paper introduces the characteristics of commonly used sheet metal materials in stamping forming,including tensile strength and elongation,and elaborates on the influence of material properties on processing accur... This paper introduces the characteristics of commonly used sheet metal materials in stamping forming,including tensile strength and elongation,and elaborates on the influence of material properties on processing accuracy and related theoretical algorithms.It also involves design methods such as multi-objective optimization and profile section optimization,as well as techniques like stress concentration area strengthening,to establish an optimization system and propose future research directions. 展开更多
关键词 Sheet metal materials Mechanical processing structure design Optimization
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Scheme Layout and Optimization Strategies for the Mechanical Structure Design of Semiconductor Probe Stations 认领 引用
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作者 Wenfeng Peng 《Journal of Electronic Research and Application》 2025年第7期99-105,共7页
This paper investigates the mechanical structural design of semiconductor probe stations.It presents the overall system architecture,functional module integration,and optimized layout schemes,including the selection a... This paper investigates the mechanical structural design of semiconductor probe stations.It presents the overall system architecture,functional module integration,and optimized layout schemes,including the selection and calculation of moving components and precision-retention mechanisms.A dedicated test platform is established to evaluate system performance.Experimental results demonstrate that a simulation-driven design approach enables the achievement of high-precision performance,effectively reduces thermal drift,and satisfies the testing requirements of semiconductor wafers.The proposed design provides a valuable reference for the research and development of similar semiconductor testing equipment. 展开更多
关键词 Semiconductor probe station Mechanical structure design Optimization strategy
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Multifunctional Perovskite Photodetectors: From Molecular-Scale Crystal Structure Design to Micro/Nano-scale Morphology Manipulation 认领 引用 被引量：17
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作者 Yingjie Zhao Xing Yin +4 位作者 Pengwei Li Ziqiu Ren Zhenkun Gu Yiqiang Zhang Yanlin Song 《Nano-Micro Letters》 SCIE EI CAS CSCD 2023年第10期565-594,共30页
Multifunctional photodetectors boost the development of traditional optical communication technology and emerging artificial intelligence fields, such as robotics and autonomous driving. However, the current implement... Multifunctional photodetectors boost the development of traditional optical communication technology and emerging artificial intelligence fields, such as robotics and autonomous driving. However, the current implementation of multifunctional detectors is based on the physical combination of optical lenses, gratings, and multiple photodetectors, the large size and its complex structure hinder the miniaturization, lightweight, and integration of devices. In contrast, perovskite materials have achieved remarkable progress in the field of multifunctional photodetectors due to their diverse crystal structures, simple morphology manipulation, and excellent optoelectronic properties. In this review, we first overview the crystal structures and morphology manipulation techniques of perovskite materials and then summarize the working mechanism and performance parameters of multifunctional photodetectors. Furthermore, the fabrication strategies of multifunctional perovskite photodetectors and their advancements are highlighted, including polarized light detection, spectral detection, angle-sensing detection, and selfpowered detection. Finally, the existing problems of multifunctional detectors and the perspectives of their future development are presented. 展开更多
关键词 Perovskite materials Crystal structure design Microano-structure manipulation Working mechanism Multifunctional photodetectors
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Advances in the structure design of substrate materials for zinc anode of aqueous zinc ion batteries 认领 引用 被引量：17
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作者 Sinian Yang Hongxia Du +5 位作者 Yuting Li Xiangsi Wu Bensheng Xiao Zhangxing He Qiaobao Zhang Xianwen Wu 《Green Energy & Environment》 SCIE EI CAS CSCD 2023年第6期1531-1552,共22页
Aqueous zinc ion batteries(AZIBs) demonstrate tremendous competitiveness and application prospects because of their abundant resources,low cost, high safety, and environmental friendliness. Although the advanced elect... Aqueous zinc ion batteries(AZIBs) demonstrate tremendous competitiveness and application prospects because of their abundant resources,low cost, high safety, and environmental friendliness. Although the advanced electrochemical energy storage systems based on zinc ion batteries have been greatly developed, many severe problems associated with Zn anode impede its practical application, such as the dendrite formation,hydrogen evolution, corrosion and passivation phenomenon. To address these drawbacks, electrolytes, separators, zinc alloys, interfacial modification and structural design of Zn anode have been employed at present by scientists. Among them, the structural design for zinc anode is relatively mature, which is generally believed to enhance the electroactive surface area of zinc anode, reduce local current density, and promote the uniform distribution of zinc ions on the surface of anode. In order to explore new research directions, it is crucial to systematically summarize the structural design of anode materials. Herein, this review focuses on the challenges in Zn anode, modification strategies and the three-dimensional(3D) structure design of substrate materials for Zn anode including carbon substrate materials, metal substrate materials and other substrate materials. Finally, future directions and perspectives about the Zn anode are presented for developing high-performance AZIBs. 展开更多
关键词 Zinc ion battery Structure design of substrate materials Dendrite-free 3D Zn anode
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Structure Design of Lower Limb Exoskeletons for Gait Training 认领 引用 被引量：15
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作者 LI Jianfeng ZHANG Ziqiang +1 位作者 TAO Chunjing JI Run 《Chinese Journal of Mechanical Engineering》 SCIE EI CAS CSCD 2015年第5期878-887,共10页
Due to the close physical interaction between human and machine in process of gait training, lower limb exoskeletons should be safe, comfortable and able to smoothly transfer desired driving force/moments to the patie... Due to the close physical interaction between human and machine in process of gait training, lower limb exoskeletons should be safe, comfortable and able to smoothly transfer desired driving force/moments to the patients. Correlatively, in kinematics the exoskeletons are required to be compatible with human lower limbs and thereby to avoid the uncontrollable interactional loads at the human-machine interfaces. Such requirement makes the structure design of exoskeletons very difficult because the human-machine closed chains are complicated. In addition, both the axis misalignments and the kinematic character difference between the exoskeleton and human joints should be taken into account. By analyzing the DOF（degree of freedom） of the whole human-machine closed chain, the human-machine kinematic incompatibility of lower limb exoskeletons is studied. An effective method for the structure design of lower limb exoskeletons, which are kinematically compatible with human lower limb, is proposed. Applying this method, the structure synthesis of the lower limb exoskeletons containing only one-DOF revolute and prismatic joints is investigated; the feasible basic structures of exoskeletons are developed and classified into three different categories. With the consideration of quasi-anthropopathic feature, structural simplicity and wearable comfort of lower limb exoskeletons, a joint replacement and structure comparison based approach to select the ideal structures of lower limb exoskeletons is proposed, by which three optimal exoskeleton structures are obtained. This paper indicates that the human-machine closed chain formed by the exoskeleton and human lower limb should be an even-constrained kinematic system in order to avoid the uncontrollable human-machine interactional loads. The presented method for the structure design of lower limb exoskeletons is universal and simple, and hence can be applied to other kinds of wearable exoskeletons. 展开更多
关键词 gait training lower limb exoskeleton structure design kinematic compatibility even-constrained kinematic chain
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Enhancing coercivity and thermal stability of(Nd,Y)-Fe-B sintered magnets through lamellar structure design 认领 引用 被引量：5
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作者 Xiao-Dong Fan Yu-Hao Li +5 位作者 Shuai Cao Guang-Fei Ding Shuai Guo Bo Zheng Ren-Jie Chen A.Ru Yan 《Rare Metals》 SCIE EI CAS CSCD 2024年第12期6571-6582,共12页
The incorporation of the high-abundance rareearth element Y in(Nd,Y)-Fe-B sintered magnets offers an opportunity to reduce the cost of permanent magnetic materials,while promoting the balanced usage of rare-earth reso... The incorporation of the high-abundance rareearth element Y in(Nd,Y)-Fe-B sintered magnets offers an opportunity to reduce the cost of permanent magnetic materials,while promoting the balanced usage of rare-earth resources.However,the performance of(Nd,Y)-Fe-B magnets prepared using the conventional dual-main-phase(DMP)method undergoes significant degradation due to the strong diffusion ability of Y.To suppress the excessive diffusion of Y,this study presents a macroscopic lamellar magnet preparation scheme.Consequently,the micromagnetic simulations revealed that the multilayer magnets exhibited superior intrinsic performance compared to DMP magnets.Subsequently,the multilayer magnets were prepared by alternately stacking the 0%Y(0Y)and 30%Y(30Y)magnetic powders.The observed magnetic properties demonstrated that the coercvity of the three-layer magnet was~0.23 T higher than that of the DMP magnet,leading to improved coercivity stability at high temperatures.Furthermore,the microstructural observations and elemental analyses indicated the presence of a~200-μm-thick interface layer at the contact site between the 0Y and 30Y magnetic layers.Thus,the proposed approach effectively suppressed the excessive diffusion of Y in(Nd,Y)-Fe-B magnets,thereby enhancing the magnetic performance of the sintered magnets. 展开更多
关键词 Nd-Y-Fe-B magnets Coercivity Thermal stability Lamellar structure design
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Review on modification routes for SnOx-based anodes for Li storage:morphological structure tuning and phase structure design 认领 引用 被引量：4
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作者 Yu Zheng Xue-Xia Lan +2 位作者 Xing-Yu Xiong Bin Yuan Ren-Zong Hu 《Rare Metals》 SCIE EI CAS CSCD 2023年第9期2840-2867,共28页
Fascinating with high specific capacity and moderate lithiation potential,SnOx-based materials have been intensively investigated as one of the most promising anodes for lithium-ion batteries.However,due to poor cy... Fascinating with high specific capacity and moderate lithiation potential,SnOx-based materials have been intensively investigated as one of the most promising anodes for lithium-ion batteries.However,due to poor cycling stability,sluggish reaction kinetics,and limited electrochemical reaction reversibility,the development of SnOx-based anodes has been hindered.And the current preparation and modification routes for SnOx-based anodes lack direct and specific illustration.Herein,modification routes for SnOx-based anodes have been emphasized.Firstly,to provide more direct instructions,the tuning routes of morphological structure for SnOx-based electrodes(including slurry-based and self-supported)have been thoroughly discussed from the preparation perspective.Secondly,according to the properties of SnOx-based anodes,the phase structure design ideas have also been properly classified and organized for addressing chemical reaction kinetics or thermodynamic issues.Finally,for future-oriented studies,new insights into the development and commercialization prospects of SnOx-based anodes are also provided.This review,with comprehensive information on SnOx-based anodes,aims to bring more specific guidance and valuable inspiration for peer researchers who are promoting the application of SnOx-based materials for energy conversion and storage devices. 展开更多
关键词 Lithium-ion battery(LIB) SnOx-based anodes Reaction kinetics Morphological structure tuning Phase structure design
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STRUCTURE DESIGN OF THE BEIJING SPECTROMETERⅢBEAM PIPE 认领 引用 被引量：4
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作者 ZHENG Lifang JI Quan +5 位作者 WANG Li LI xunfeng XU Shaowang DONG Sujun ZHAO Libin LIU Jianping 《Chinese Journal of Mechanical Engineering》 SCIE EI CAS 2008年第3期1-6,共6页
The Beijing spectrometer Ⅲ （BESⅢ） beam pipe is in the center of the BESⅢ, which is the detector of the upgrade project of Beijing electron and positron collider （BEPC Ⅱ）. Electrons and positrons collide in the... The Beijing spectrometer Ⅲ （BESⅢ） beam pipe is in the center of the BESⅢ, which is the detector of the upgrade project of Beijing electron and positron collider （BEPC Ⅱ）. Electrons and positrons collide in the BESⅢ beam pipe. According to the demands of the BEPC Ⅱ, a key program of Chinese Academy of Sciences, the BESⅢ beam pipe is designed based on the finite elements analysis. The BESIII beam pipe is installed in the inner cylinder of the BESⅢ drift chamber. As a vacuum tube, the BESIII beam pipe is designed as 1 000 mm in length, 63 mm in inner diameter and 114 mm in outer diameter, respectively. The BESIII beam pipe consists of a central beryllium pipe cooled by EDM-1, the oil No.1 for electric discharge machining, and two extended copper pipes cooled by deionized water （DW）. The three parts are jointed by vacuum welding. Factors taken into account in the design are as follows. ① The wall thickness of the central beryllium pipe should be designed as small as possible to reduce the multi-scattering and improve the particle momentum resolution. And the wall thickness of the extended copper pipe should be designed as large as possible to protect the detectors from the backgrounds. ②The BESⅢ beam pipe must be sufficiently cooled to avoid the damage and prevents its influence to the BESⅢ drift chamber （DC） operation. The inner surface temperature of the DC inner cylinder must be maintained at 293±2 K. ③ The magnetic permeability of the materials used in the BESⅢ beam pipe must be less than 1.05 H/m to avoid large magnetic field distortions. ④ The static pressure of the vacuum chamber of the BESⅢ beam pipe must be less than 800 μPa. The simulating results show that the designed structure of the BESⅢ beam pipe satisfies the requirements mentioned above. The structure design scheme is evaluated and adonted hv the headouarters of BEPCⅡ. 展开更多
关键词 Beam pipe Beijing spectrometer Ⅲ Structure design Beijing electron and positron collider Ⅱ BESⅢ
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Workshop Structure Design of Frozen Drinks Factory 认领 引用
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作者 Peng WAN Zhen ZHAO +4 位作者 Guoyan WEN Yunshuang FU Xiaoli WU Cuizhi LI Zhiyong LU 《Asian Agricultural Research》 2025年第2期38-40,44,共3页
According to the announcement of General Administration of Quality Supervision,Inspection and Quarantine of the People's Republic of China,the risk of microbial items in frozen drinks is very high,and it is diffic... According to the announcement of General Administration of Quality Supervision,Inspection and Quarantine of the People's Republic of China,the risk of microbial items in frozen drinks is very high,and it is difficult to improve.For example,a recent spot check showed that 42 kinds of frozen drinks had microbial indicators exceeding the standard.Part of the reason is that the design of the production workshop is not conducive to the rapid removal of production water,resulting in continuous moisture throughout the workshop,which provides a breeding bed for microorganisms to breed and then contaminates the product.Therefore,research is carried out from the design point of view to fundamentally reduce the moisture in the workshop and build a dry workshop for frozen drinks production,so as to effectively reduce the risk of microbial contamination of frozen drinks. 展开更多
关键词 Frozen drinks Microorganisms Structural design
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An Optimized Structure Design of the HT-7U Vacuum Vessel 认领 引用 被引量：3
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作者 姚达毛 宋云涛 +3 位作者 杜世俊 吴维越 武松涛 何也熙 《Plasma Science and Technology》 SCIE CAS 2001年第4期865-870,共6页
The vacuum vessel of the HT-7U superconducting tokamak will be a fully-welded structure with a double-wall. The space between the double-wall will be filled with borated water for neutron shielding. Non-circular cross... The vacuum vessel of the HT-7U superconducting tokamak will be a fully-welded structure with a double-wall. The space between the double-wall will be filled with borated water for neutron shielding. Non-circular cross-section is designed for plasma elongating. Horizontal and vertical ports are designed for diagnosing, vacuum pumping, plasma heating and plasma current driving, etc. The vacuum vessel consists of 16 segments. It will be baked out at 250℃ to obtain a clean wall. When the machine is in operation, both the hot wall (the wall temperature is around 100℃) and the cold wall (wall temperature is in normal equilibrium) are considered. The stress caused by thermal deformation and the electromagnetic (EM) loads caused by 1.5 MA plasma disruption in 3.5 T magnetic field have to be taken into account in the design of the HT-7U vacuum vessel Finite element method was employed for structure analysis of the vacuum vessel. 展开更多
关键词 An Optimized Structure Design of the HT-7U Vacuum Vessel Design HT
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Structure design and mechanical analysis of a hybrid rigid-soft knee exoskeleton based on curve beam 认领 引用 被引量：3
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作者 Shikai Jin Wenjie Ge Ning Chen 《Acta Mechanica Sinica》 SCIE EI CAS CSCD 2024年第10期71-84,共14页
The strength and endurance of human limbs can be enhanced through equipping exoskeletons or other types of wearabledevices. However, long-time use of such devices may cause musculoskeletal disorders (MSDs) or potentia... The strength and endurance of human limbs can be enhanced through equipping exoskeletons or other types of wearabledevices. However, long-time use of such devices may cause musculoskeletal disorders (MSDs) or potential injuries due toexternal shocks and vibrations. Consequently, preventing potential risks and enhancing comfortability are crucial to the designof exoskeleton. This research introduces a novel hybrid rigid-soft knee joint exoskeleton, which is well flexible and supportedby two curved beams. This design is friendly and comfortable for wearers. The stiffness of the curved beam is meticulouslycalibrated to match the natural need of the knee joint, which provides appropriate support under vibration and impact. Weemploy the analytical modeling, finite element method (FEM), numerical analysis, and experimental approaches to analyze thestatic and dynamic properties of the knee exoskeleton system. The results confirm that the exoskeleton system exhibits reducedvibration transmissibility in low-frequency environments, and present a new methodology for the design and mechanicalanalysis of exoskeleton systems. 展开更多
关键词 Knee exoskeleton Hybrid rigid-soft mechanism Mechanical analysis Structure design
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Durability zonation standard of concrete structure design 认领 引用 被引量：6
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作者 金伟良 吕清芳 《Journal of Southeast University(English Edition)》 EI CAS 2007年第1期98-104,共7页
Durability zonation standard （DZS） is proposed to provide useful parameters for durable concrete structure design. It deals not only with the influence of environment on structures, but also with types, functions an... Durability zonation standard （DZS） is proposed to provide useful parameters for durable concrete structure design. It deals not only with the influence of environment on structures, but also with types, functions and importance of structures based on the theory of life cycle cost（LCC）. First, the basic concept of DZS for concrete structure design is defined. Then the basic principles for DZS are established. The factors for zonation according to natural environmental conditions and structural importance are identified. The usefulness of DZS by citing a real application for concrete highway bridges in Zhejiang Province is demonstrated. Finally, durability regulations are provided accordingly to zonation. 展开更多
关键词 durability zonation standard concrete structure design zonation map life cycle cost
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Structure design and characteristics analysis of a cylindrical giant magnetostrictive actuator for ball screw preload 认领 引用 被引量：1
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作者 JU Xiao-jun LIN Ming-xing +2 位作者 FAN Wen-tao BU Qing-qiang WU Xiao-jian 《Journal of Central South University》 SCIE EI CAS CSCD 2018年第7期1799-1812,共14页
In order to achieve automatic adjustment of the double-nut ball screw preload, a magnetostrictive ball screw preload system is proposed. A new cylindrical giant magnetostrictive actuator （CGMA）, which is the core co... In order to achieve automatic adjustment of the double-nut ball screw preload, a magnetostrictive ball screw preload system is proposed. A new cylindrical giant magnetostrictive actuator （CGMA）, which is the core component of the preload system, is developed using giant magnetostrictive material （GMM） with a hole. The pretightening force of the CGMA is determined by testing. And the magnetic circuit analysis method is introduced to calculate magnetic field intensity of the actuator with a ball screw shaft. To suppress the thermal effects on the magnetostrictive outputs, an oil cooling method which can directly cool the heat source is adopted. A CGMA test platform is established and the static and dynamic output characteristics are respectively studied. The experimental results indicate that the CGMA has good linearity and no double-frequency effect under the bias magnetic field and the output accuracy of the CGMA is significantly improved with cooling measures. Although the output decreased with screw shaft through the actuator, the performance of CGMA meets the design requirements for ball screw preload with output displacement more than 26 μm and force up to 6200 N. The development of a CGMA will provide a new approach for automatic adjustment of double-nut ball screw preload. 展开更多
关键词 ball screw preload cylindrical giant magnetostrictive actuator （CGMA） structure design output characteristics
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Chemical interaction motivated structure design of layered metal carbonate hydroxide/MXene composites for fast and durable lithium ion storage 认领 引用 被引量：1
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作者 Huibin Guan Hanna He +1 位作者 Tianbiao Zeng Chuhong Zhang 《Journal of Energy Chemistry》 SCIE EI CAS CSCD 2021年第12期633-641,I0015,共9页
Rational architecture design has turned out to be an effective strategy in improving the electrochemical performance of electrode materials for batteries.However,an elaborate structure that could simultaneously endow ... Rational architecture design has turned out to be an effective strategy in improving the electrochemical performance of electrode materials for batteries.However,an elaborate structure that could simultaneously endow active materials with promoted reaction reversibility,accelerated kinetic and restricted volume change still remains a huge challenge.Herein,a novel chemical interaction motivated structure design strategy has been proposed,and a chemically bonded Co(CO3)0.5OH·0.11 H2O@MXene(CoCH@MXene)layered-composite was fabricated for the first time.In such a composite,the chemical interaction between Co2+and MXene drives the growth of smaller-sized CoCH crystals and the subsequent formation of interwoven CoCH wires sandwiched in-between MXene nanosheets.This unique layered structure not only encourages charge transfer for faster reaction dynamics,but buffers the volume change of CoCH during lithiation-delithiation process,owing to the confined crystal growth between conductive MXene layers with the help of chemical bonding.Besides,the sandwiched interwoven CoCH wires also prevent the stacking of MXene layers,further conducive to the electrochemical performance of the composite.As a result,the as-prepared CoCH@MXene anode demonstrates a high reversible capacity(903.1 mAh g-1at 100 mA g-1)and excellent cycling stability(maintains 733.6 mAh g-1at1000 mA g-1after 500 cycles)for lithium ion batteries.This work highlights a novel concept of layerby-layer chemical interaction motivated architecture design for futuristic high performance electrode materials in energy storage systems. 展开更多
关键词 Chemical interaction motivated structure design Layer-by-layer structure Metal carbonate hydroxide Few-layer MXene Fast and durable lithium ion storage
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Structure Design Considerations of a Sub-50nm Self-Aligned Double-Gate MOSFET 认领 引用 被引量：1
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作者 殷华湘 徐秋霞 《Journal of Semiconductors》 CAS 北大核心 2002年第12期1267-1274,共8页
A comprehensive way to design a sub 50nm SADG MOSFET with the ability of being fabricated by improved CMOS technique is described.Under this way,the gate length and thickness of Si island of DG device show many differ... A comprehensive way to design a sub 50nm SADG MOSFET with the ability of being fabricated by improved CMOS technique is described.Under this way,the gate length and thickness of Si island of DG device show many different scaling limits for various elements.Meanwhile,the spacer insulator shows a kind of width thickness on device drain current and circuit speed.A model about that effect is developed and offers design consideration for future.A new design of channel doping profile,called SCD,is also discussed here in detail.The DG device with SCD can achieve a good balance between the volume inversion operation mode and the control of V th .Finally,a guideline to make a SADG MOSFET is presented. 展开更多
关键词 double gate MOSFET structure design sidewall effect SCD
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Structure Design and Analysis of High-Voltage Power Supply for ECRH 认领 引用
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作者 王磊 黄懿赟 +3 位作者 赵燕平 张健 杨磊 郭文军 《Plasma Science and Technology》 SCIE EI CAS CSCD 2014年第11期1079-1082,共4页
In order to develop a high-voltage power supply （HVPS） with high quality parame- ters, not only its electrical circuit but also its structure should be studied in detail. In this paper, the structure design of the c... In order to develop a high-voltage power supply （HVPS） with high quality parame- ters, not only its electrical circuit but also its structure should be studied in detail. In this paper, the structure design of the collector power supply for gyrotron is discussed first. Then the electri- cal field and potential simulations of its inain devices are analyzed. Finally, relevant calculations and conclusions are given. 展开更多
关键词 ECRH HVPS structure design distributed capacitance
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Discussion on the Design Value of Environmental Condition in Offshore Structure Design 认领 引用
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作者 丁金鸿 谭家华 潘斌 《Journal of Shanghai Jiaotong university(Science)》 EI 2009年第4期456-461,共6页
Return period is generally adopted to calculate the design value of environmental condition in offshore structure design. However, it can not make relevant adjustment according to structure＇s, especially the mobile u... Return period is generally adopted to calculate the design value of environmental condition in offshore structure design. However, it can not make relevant adjustment according to structure＇s, especially the mobile unit＇s, life time or its operation areas and usually make the design either insufficiently safe or rather uneconomical. A formula is developed to solve this problem in the case of the design wave height, where the risk, the design life, the distributions of wave heights in operation areas and the operating durations in each area are regarded as parameters. The applications of this method and the comparisons with the general method are presented. The result of this method is considered to be proper. 展开更多
关键词 offshore structure design environmental condition design wave height
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Forming-Precision-Driven Structure Design of Hydraulic Press: Methodology and Case Study 认领 引用
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作者 李艳聪 张连洪 +2 位作者 何柏岩 陈永亮 张淳 《Transactions of Tianjin University》 EI CAS 2015年第6期541-553,共13页
The structure stiffness of presses has great effects on the forming precision of workpieces, especially in near-net or net shape forming. Conventionally the stiffness specification of presses is empirically determined... The structure stiffness of presses has great effects on the forming precision of workpieces, especially in near-net or net shape forming. Conventionally the stiffness specification of presses is empirically determined, resulting in poor designs with insufficient or over sufficient stiffness of press structures. In this paper, an approach for the structure design of hydraulic presses is proposed, which is forming-precision-driven and can make presses costeffective by lightweight optimization. The approach consists of five steps:(1)the determination of the press stiffness specification in terms of the forming precision requirement of workpieces;(2)the conceptual design of the press structures according to the stiffness and workspace specifications, and the structure configuration of the press;(3)the prototype design of the press structures by equivalently converting the conceptual design to prototypes;(4)the selection of key structure parameters by sensitivity analysis of the prototype design; and(5)the optimization of the prototype design. The approach is demonstrated and validated through a case study of the structure design of a 100 MN hydraulic press. 展开更多
关键词 hydraulic press structure design precision forming conceptual design prototype design optimal design
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