检索结果-内蒙古大学图书馆

TPP-Based Microfluidic Chip Design and Fabrication Method for Optimized Nerve Cells Directed Growth

Cyborg and Bionic Systems 2024年第1期5卷 434-447页

作者： Menghua Liu Anping Wu Jiaxin Liu Yanfeng Zhao Xinyi Dong Tao Sun Qing Shi Huaping Wang Intelligent Robotics Institute School of Mechatronical EngineeringBeijing Institute of TechnologyBeijing 100081China School of Medical Technology Beijing Institute of TechnologyBeijing 100081China Beijing Advanced Innovation Center for Intelligent Robots and Systems Beijing Institute of TechnologyBeijing 100081China Key Laboratory of Biomimetic Robots and Systems(Beijing Institute of Technology) Ministry of EducationBeijing 100081China

Microfluidic chips offer high customizability and excellent biocompatibility,holding important promise for the precise control of biological growth at the ***,the microfluidic chips employed in the studies of regulating cell growth are typically fabricated through 2D *** approach partially restricts the diversity of cell growth platform designs and manufacturing *** paper presents a method for designing and manufacturing neural cell culture microfluidic chips(NCMC)using two-photon polymerization(TPP),where the discrete and directional cell growth is optimized through studying the associated geometric parameters of on-chip *** study involves simulations and discussions regarding the effects of different hatching distances on the mold surface topography and printing time in the Describe print preview module,which determines the appropriate printing accuracy corresponding to the desired mold *** the assistance of the 3D maskless lithography system,micron-level rapid printing of target molds with different dimensions were *** NCMC with different geometric parameters,COMSOL software was used to simulate the local flow velocity and shear stress characteristics within the ***-SY5Y cells were selected for directional differentiation experiments on NCMC with different geometric *** results demonstrate that the TPP-based manufacturing method efficiently constructs neural microfluidic chips with high precision,optimizing the discrete and directional cell *** anticipate that our method for designing and manufacturing NCMC will hold great promise in construction and application of microscale 3D drug models.

关键词： two photon polymerization regulating cell growth nerve cell culture microfluidic chip precise control biological growth microfluidic chips d photolithographythis tpp based microfluidic chip cell growth platform

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Design of dispersive module for a 3D object shape detection device 2

Design of dispersive module for a 3D object shape detection ...

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2nd IEEE Asia-Pacific Conference on Image Processing, Electronics and Computers, IPEC 2021

作者： Liu, Ruoxu Xie, Zhenhao Zou, Kuaisheng Zhou, Jiankang Soochow University School of Optoelectronic Science and Engineering Suzhou China Key Laboratory of Advanced Optical Manufacturing Technology of Jiangsu Province Key Laboratory of Modern Optical Technology of Ministry of Education Suzhou China

ISBN: (纸本)9781728190181

Confocal line spectroscopy is proposed for obtaining the three-dimensional shape detection of microscopic objects. An off-axis spectral confocal technology composed of TIR lens, PGP beam splitter and cylindrical lens. The design results show that the PGP dispersive device achieves the linearity of dispersion, and the focal plane formed by this scheme has a working distance of 6.92mm on the z-axis, corresponding to the wavelength range of 450nm-700nm, that is, 27.68 mu m/nm (1nm wavelength is corresponding to 27.68 microns);At the same time, the focal plane is 20mm long and 6.92mm deep, with the one-dimensional movement of the object, the three-dimensional shape information of the object can be obtained. © 2021 IEEE.

关键词： Object detection

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Hybrid AC/DC Collection and HVDC Transmission Topology for Large-scale Offshore Wind Farms

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CSEE Journal of Power and Energy Systems 2025年第3期11卷 949-959页

作者： Wang Xiang Rui Tu Mingyu Han Jinyu Wen School of Electrical and Electronic Engineering Huazhong University of Science and Technology Wuhan China State Key Laboratory of Advanced Electromagnetic Technology Huazhong University of Science and Technology Wuhan China Changzhou Power Supply Company of State Grid Jiangsu Electric Power Co. Ltd. Changzhou China

Conventional offshore wind integration systems use 33kV or 66kV AC cables to collect wind energy and employ high voltage direct current (HVDC) transmission technology to deliver wind power to onshore grids. This scheme suffers from high costs for collection systems and offshore platforms when the capacity of offshore wind farms increases. This paper proposes a hybrid AC/DC collection and HVDC transmission concept for the large-scale offshore wind integration system. Wind farms near the offshore converter platform are integrated using AC collection cables, while the remaining wind farms are integrated using DC collection cables. The AC and DC collection cables infeed to the offshore converter platform, which features a three-terminal hybrid AC/DC/DC hub. The system layout and operating principle of the hybrid AC/DC collection and HVDC transmission system are introduced in detail. The control strategy and parameter design of the hybrid AC/DC/DC hub are presented. An economic evaluation comparing conventional AC collection and HVDC transmission schemes is conducted. It is indicated that the proposed integration concept can reduce the operating power capacity and power loss of the offshore converter, enhancing the economic efficiency of the overall integration system. Finally, the effectiveness of the proposed integration technology is validated in a 2000MW offshore wind power integration system by PSCAD/EMTDC simulation analysis.

关键词： Wind farms HVDC transmission Voltage Topology Costs Wind power generation Propagation losses Wind energy integration Underwater cables Seaports

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“Three‐in‐one”strategy:Heat regulation and conversion enhancement of a multifunctional separator for safer lithium-sulfur batteries

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Carbon Energy 2023年第11期5卷 54-67页

作者： Kaiping Zhu Luhe Li Pan Xue Jun Pu Liyun Wu Gengde Guo Ran Wang Ye Zhang Huisheng Peng Guo Hong Qiang Zhang Yagang Yao National Laboratory of Solid State Microstructures College of Engineering and Applied SciencesJiangsu Key Laboratory of Artificial Functional MaterialsCollaborative Innovation Center of Advanced MicrostructuresNanjing UniversityNanjingChina Key Laboratory of Functional Molecular Solids Ministry of EducationCollege of Chemistry and Materials ScienceAnhui Normal UniversityWuhuChina State Key Laboratory of Molecular Engineering of Polymers Department of Macromolecular ScienceLaboratory of Advanced MaterialsFudan UniversityShanghaiChina Department of Materials Science and Engineering College of EngineeringCity University of Hong KongHong KongChina Beijing Key Laboratory of Green Chemical Reaction Engineering and Technology Department of Chemical EngineeringTsinghua UniversityBeijingChina

The safety problems encountered with lithium–sulfur batteries(LSBs)hinder their development for practical ***,a highly thermally conductive separator was constructed by cross‐weaving super‐aligned carbon nanotubes(SA‐C)on super‐aligned boron nitride@carbon nanotubes(SA‐BC)to create a composite film(SA‐BC/SA‐C).This separator was used to fabricate safe LSBs with improved electrochemical *** highly aligned separator structure created a uniform thermal field that could rapidly dissipate heat accumulated during continuous operation due to internal resistance,which prevented the development of extremely high *** array of boron nitride nanosheets endowed the composite separator with a large number of adsorption sites,while the highly graphitized carbon nanotube skeleton accelerated the catalytic conversion of high‐valence polysulfides into low‐valence *** arrayed molecular brush design enabled the regulation of local current density and ion flux,and considerably alleviated the growth of lithium dendrites,thus promoting the smooth deposition of Li ***,a battery constructed with the SA‐BC/SA‐C separator showed a good discharge capacity of 685.2 mAh g−1 over 300 cycles(a capacity decay of 0.026%per cycle)at 2 C and 60°***“three‐in‐one”multifunctional separator design strategy constitutes a new path forward for overcoming the safety problems of LSBs.

关键词： conversion enhancement heat regulation high safety lithium-sulfur batteries multifunctional separator

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Study on refractive index distribution measurement of self-focusing lens with mach-zehnder interferometry 2

Study on refractive index distribution measurement of self-f...

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2nd IEEE Asia-Pacific Conference on Image Processing, Electronics and Computers, IPEC 2021

作者： Sun, Peng Xu, Feng Zou, Kuaisheng Ma, Suodong Soochow University School of Optoelectronic Science and Engineering Suzhou China Key Laboratory of Advanced Optical Manufacturing Technology of Jiangsu Province Key Laboratory of Modern Optical Technology of Ministry of Education Suzhou China

ISBN: (纸本)9781728190181

In this paper, a Mach-Zehnder Interferometry is designed and setup to measure the refractive index of a self-focusing lens. Interference fringe patterns with different ion exchange degrees are investigated and simulated at first. Experimental interference fringe patterns are collected and analyzed by Matlab. The refractive index distribution curve of the self-focusing lens is finally obtained to easily assess the ion exchange status. © 2021 IEEE.

关键词： Ion exchange

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Microstructure and high-temperature tensile property of TiAl alloy produced by selective electron beam melting

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Rare Metals 2021年第12期40卷 3635-3644页

作者： Hang-Yu Yue Hui Peng Yong-Jun Su Xiao-Peng Wang Yu-Yong Chen School of Materials Science and Engineering Jiangsu University of Science and TechnologyZhenjiang 212003China Key Laboratory of High-Temperature Structural Materials and Coatings Technology Ministry of Industry and Information TechnologyBeihang UniversityBeijing 100191China School of Materials Science and Engineering Beihang UniversityBeijing 100191China Department of Mechanics College of EngineeringLishui UniversityLishui 323000China State Key Laboratory of Advanced Welding and Joining Harbin Institute of TechnologyHarbin 150001China

The microstructure and high-temperature tensile property of a Ti-47Al-2Cr-2 Nb alloy fabricated via selective electron beam melting(SEBM) with hatch spacings of 85,100,and 115 μm were systematically *** the hatch spacing increased from 85 to 115 μm,the microstructure comprising the horizontal cross section changed from coarse lamellar(y/B2) colonies to an inhomogeneous structure and the grain morphology transformed from elongated grains to inhomogeneous and equiaxed grains along the building direction of the vertical cross *** boundary population of the SEBMproduced TiAl alloy samples was dominated by high-angle grain boundaries(≥ 15°),and the volume fraction of these boundaries decreased with hatch spacing ***,the as-built TiAl alloy sample produced under a spacing of 100 μm exhibited the highest room-and elevated-temperature tensile strengths,with the ultimate tensile strength at room temperature(642 MPa) increasing to 674 MPa at 700 ℃.Furthermore,the mechanism of anomalous strengthening at 700 ℃ was discussed in detail.

关键词： Selective electron beam melting TiAl alloy Hatch spacing Microstructure Tensile property

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Ultra-low temperature anodic bonding of silicon and glass based on nano-gap dielectric barrier discharge

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Journal of Central South University 2021年第2期28卷 351-360页

作者： YAO Fu-rong PAN Ming-qiang ZHU Zong-jian LIU Ji-zhu WANG Yang-jun College of Mechatronics Engineering&Collaborative Innovation Center of Suzhou Nano Science and Technology Soochow UniversitySuzhou 215123China Jiangsu Key Laboratory for Advanced Robotics Technology Soochow UniversitySuzhou 215123China Robotics and Microsystems Center Soochow UniversitySuzhou 215123China

The article improves the process of dielectric barrier discharge(DBD)activated anode *** treated surface was characterized by the hydrophilic surface *** results showed that the hydrophilic angle was significantly reduced under nano-gap conditions and the optimal discharge voltage was 2 ***,the anodic bonding and dielectric barrier discharge activated bonding were performed in comparison experiments,and the bonding strength was characterized by tensile failure *** results showed that the bonding strength was higher under the nano-gap dielectric barrier *** process completed 110°C ultra-low temperature anodic bonding and the bonding strength reached 2 ***,the mechanism of promoting bonding after activation is also discussed.

关键词： dielectric barrier discharge anodic bonding ultra-low temperature

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Design of dispersive objective lens of spectral confocal displacement sensor 2

Design of dispersive objective lens of spectral confocal dis...

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2nd IEEE Asia-Pacific Conference on Image Processing, Electronics and Computers, IPEC 2021

作者： Xie, Zhenhao Liu, Ruoxu Zou, Kuaisheng Zhou, Jiankang Soochow University School of Optoelectronic Science and Engineering Suzhou China Key Laboratory of Advanced Optical Manufacturing Technology of Jiangsu Province Key Laboratory of Modern Optical Technology of Ministry of Education Suzhou China

ISBN: (纸本)9781728190181

According to the working principle of the spectral confocal displacement sensor, four kinds of glass materials SKIO, H-ZLAF52A, N-LAK34 and SFL6 for dispersive lens are selected. 4 single lenses and one doublet lens are components of the initial structure of the linear dispersion objective lens. Optical design software is used to optimize the tolerance of the initial structure of the dispersive objective lens. The results show that the spot diagram of each wavelength is much smaller than the Airy disk. in the wavelength range of 450-700nm, the measurement range of the dispersive objective lens can reach 3.454 mm, and the linear determination coefficient R2 between the axial dispersion diatance and the wavelength is 0.972. © 2021 IEEE.

关键词： Dispersion (waves)

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Stable Production of Dissimilar Steel Joints in Construction Machinery by Narrow Gap Oscillating Laser Welding

SSRN

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SSRN 2024年

作者： Fan, Yu Cao, Jian Zhang, Jun Zhao, Yong Fang, Rongchao Wang, Yeqing Chen, Zheng School of Materials and Physics China University of Mining and Technology Xuzhou221116 China State Key Laboratory of Advanced Welding and Joining Harbin Institute of Technology Harbin150001 China Xuzhou Construction Machinery Group Co. Ltd. Xuzhou221011 China Provincial Key Laboratory of Advanced Welding Technology Jiangsu University of Science and Technology Zhenjiang212003 China

Narrow gap oscillating laser welding with filler wire is a promising technique for joining high-strength steels in construction machinery. In order to investigate the influence of beam oscillation on the surface morphology and microstructure of weld joints of two types of commonly-used high-strength steels, a comparative study between oscillation welding and non-oscillation welding was conducted. High-speed photography technique was employed to reveal the microstructure and mechanical properties of the dissimilar joints. The results showed that laser beam oscillation produces two effects: one was to enlarge the heated surface of molten pool, while the other was to stir the liquid metal in molten pool periodically. Under the first effect, the fusion between sidewall and weld bead layers was promoted, while under the latter, coarse columnar grains ceased to appear, but finer grains were formed. The weld joints between Q355 and 35 steels exhibited excellent tensile impact bending performance, which was attributed to the grain refinement effect. The results also demonstrated that the oscillation welding with a contact angle less than 50° could avoid lack of fusion in multi-pass wire-filling laser welding. The influence of the oscillation welding process on the quality of welding was further discussed. © 2024, The Authors. All rights reserved.

关键词： Laser beam welding

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Unusual thermal properties of graphene origami crease:A molecular dynamics study

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Green Energy & Environment 2022年第1期7卷 86-94页

作者： Ning Wei Yang Chen Kun Cai Yingyan Zhang Qingxiang Pei Jin-Cheng Zheng Yiu-Wing Mai Junhua Zhao Jiangsu Key Laboratory of Advanced Food Manufacturing Equipment and Technology Jiangnan UniversityWuxi214122China Shanghai Institute of Applied Mathematics and Mechanics Shanghai Key Laboratory of Mechanics in Energy EngineeringShanghai UniversityShanghai200072China School of Engineering RMIT UniversityBundooraVIC3083Australia Institute of High Performance Computing A^(*)STAR138632Singapore Department of Physics and the Collaborative Innovation Center for Optoelectronic Semiconductors and Efficient Devices Xiamen UniversityXiamen361005China Xiamen University Malaysia 439000SepangSelangorMalaysia Centre for Advanced Materials Technology(CAMT) School of AerospaceMechanical and Mechatronic Engineering J07The University of SydneySydneyNSW2006Australia

Graphene is a two-dimensional material that can be folded into diverse and yet interesting nanostructures like macro-scale paper *** of graphene not only makes different morphological configurations but also modifies their mechanical and thermal *** by paper origami,herein we studied systemically the effects of creases,where sp^(2)to sp^(3)bond transformation occurs,on the thermal properties of graphene origami using molecular dynamics(MD)*** MD simulation results show that tensile strain reduces(not increases)the interfacial thermal resistance owing to the presence of the *** unusual phenomenon is explained by the micro-heat flux migration and stress *** findings on the graphene origami enable the design of the next-generation thermal management devices and flexible electronics with tuneable properties.

关键词： Graphene Origami Bond transformation Interfacial thermal resistance Molecular dynamics

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