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Nano-channel-based physical and chemical synergic regulation for dendrite-free lithium plating

2006年中国机械工程学会年会暨中国工程院机械与运载工程学部首届年会

作者： LI Yanbao, chen benyong, zhang guizhen, zhang liqiong Department of measurement and Control technology zhejiang sci-tech university hangzhou 310018, china

A novel contact-free micromotion stage based on magneticsuspension technique is proposed. In this micromotion stage,a moving plate is driven by Lorentz force that acts on fourgroups of halbach arrays

关键词： Magnetic suspension halbach magnet array magnetic field H∞ control simulation.

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Nano Research 2021年第10期14卷 3585-3597页

作者： Qiang Guo Wei Deng Shengjie Xia Zibo zhang Fei Zhao Binjie Hu Sasa zhang Xufeng Zhou George Zheng chen Zhaoping Liu Key laboratory of Graphene technologies and Applications of zhejiang Province and Advanced Li-ion Battery Engineering laboratory of zhejiang Province Ningbo Institute of Materials Technology and EngineeringChinese Academy of Sciences(CAS)Ningbo 315201China Department of Chemical and Environmental Engineering Faculty of Science and EngineeringUniversity of NottinghamNingbo 315100China Department of Chemical and Environmental Engineering Faculty of EngineeringUniversity of NottinghamNottingham NG72RDUK

Uncontrollable dendrite growth resulting from the non-uniform lithium ion(Li^(+))flux and volume expansion in lithium metal(Li)negative electrode leads to rapid performance degradation and serious safety problems of lithium metal *** N-containing functional groups in carbon materials are reported to be effective to homogenize the Li^(+)flux,the effective interaction distance between lithium ions and N-containing groups should be relatively small(down to nanometer scale)according to the Debye length ***,it is necessary to carefully design the microstructure of N-containing carbon materials to make the most of their roles in regulating the Li^(+)*** this work,porous carbon nitride microspheres(PCNMs)with abundant nanopores have been synthesized and utilized to fabricate a uniform lithiophilic coating layer having hybrid pores of both the nano-and micrometer scales on the Cu/Li ***,the three-dimensional(3D)porous framework is favorable for absorbing volume changes and guiding Li ***,this coating layer can render a suitable interaction distance to effectively homogenize the Li^(+)flux and contribute to establishing a robust and stable solid electrolyte interphase(SEI)layer with Li-F,Li-N,and Li-O-rich contents based on the Debye length *** a physical-chemical synergic regulation strategy using PCNMs can lead to dendrite-free Li plating,resulting in a low nucleation overpotential and stable Li plating/stripping cycling performance in both the Li||Cu and the Li||Li symmetric ***,a full cell using the PCNM coated Li foil negative electrode and a LiFePO4 positive electrode has delivered a high capacity retention of~80%after more than 200 cycles at 1 C and achieved a remarkable rate *** pouch cell fabricated by pairing the PCNM coated Li foil negative electrode with a NCM 811 positive electrode has retained~73%of the initial capacity after 150 cycles at 0.2 C.

关键词： carbon nitride Debye length lithiophilic coating porous structure Li negative electrode

Effect of nanometer-sized MgO particles on flux pinning in YBa2Cu307-δ

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science Bulletin 1997年第4期 285-288页

作者： chen Qinghu, FANG Minghu, YE Xisheng, JIAO Zhengkuan zhang Qirui, WEN Haihu and ZHAO Zhongxian! Physics Department, zhejiang university, hangzhou 310027, china 2. State Key laboratory for Superconductivity, Institute of Physics, Chinese Academy of sciences, Beijing 100080, china

As is well known, the relatively low critical current density Jcand the serious flux motion limit a variety of applications of high-temperature superconductors （HTSCs）. The introduction of

关键词： high-T_c superconductor flux pinning YBa2Cu3O7-δ nanometer-sized MgO particles.

基于运动学分析的工业机器人轨迹精度补偿方法

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仪器仪表学报 2020年第3期41卷 175-183页

作者：唐尧张恩政陈本永陈刚刘翠苹浙江理工大学纳米测量实验室杭州310018 杭州市质量技术监督检测院机器人实验室杭州310019 杭州新松机器人自动化有限公司杭州311225

运动轨迹精度是工业机器人重要的性能评价指标,从机器人运动学角度研究工业机器人轨迹精度提高补偿方法。以SR4C六自由度工业机器人为研究对象,基于国标中对机器人轨迹精度的评定标准,提出一种基于运动学分析的工业机器人轨迹精度补偿方...

运动轨迹精度是工业机器人重要的性能评价指标,从机器人运动学角度研究工业机器人轨迹精度提高补偿方法。以SR4C六自由度工业机器人为研究对象,基于国标中对机器人轨迹精度的评定标准,提出一种基于运动学分析的工业机器人轨迹精度补偿方法,并建立了曲线运动轨迹偏差与运动学模型参数误差映射的机器人运动轨迹误差数学模型。在实现激光跟踪仪和机器人坐标系统一的快速有效的坐标系转化方法的基础上,采用改进最小二乘算法选择轨迹偏差最小时的最优运动学参数,对构建的机器人轨迹测试与补偿实验系统进行了轨迹补偿实验,验证了该方法的有效性。结果表明,经该方法补偿后机器人平均位置误差由3.65%提高至0.79%,直线、圆弧轨迹精度分别提高了38.75%、25%。

关键词：工业机器人运动学分析轨迹误差模型坐标系转化轨迹精度

Preparation, optimization, and characterization of chitosancoated solid lipid nanoparticles for ocular drug delivery

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The Journal of Biomedical Research 2018年第6期32卷 411-423页

作者： Fengzhen Wang Mingwan zhang Dongsheng zhang Yuan Huang Li chen Sunmin Jiang Kun Shi Rui Li Department of Pharmacy the Affiliated Hospital of Xuzhou Medical University School of Pharmacy Nanjing Medical University Department of Pharmacy Tongde Hospital of Zhejiang Province Department of Colorectal Surgery the First Affiliated Hospital of Nanjing Medical University Department of Pharmacy the Affiliated Wuxi People's Hospital of Nanjing Medical University Hospital Department of Pharmacy Jiangsu University the Affiliated Zhenjiang First People's Hospital Department of Pharmacy the Affiliated Wuxi Maternity and Child Health Care Hospital of Nanjing Medical University Department of Orthopedichitosan Xuzhou Central Hospital

The present study aimed to develop and optimize chitosan coated solid lipid nanoparticles(chitosan-SLNs)encapsulated with methazolamide. Chitosan-SLNs were successfully prepared by a modified oil-in-water emulsification-solvent evaporation method with glyceryl monostearate as the solid lipid and phospholipid as the surfactant. Systematic screening of formulation factors was carried out. The optimized formula for preparation was screened by orthogonal design as well as Box-Behnken design with entrapment efficiency, particle size and zeta potential as the indexes. The entrapment efficiency of the optimized formulation(methazolamide-chitosan-SLNs)prepared was(58.5± 4.5)%,Particle size(247.7 ± 17.3) nm and zeta potential(33.5 ±3.9) mV. Transmission electron microscopy showed homogeneous spherical particles in the nanometer range. A prolonged methazolamide in vitro release profile was obtained in the optimized chitosan-SLNs suspension compared with methazolamide solution. No ocular damages were observed in the susceptibility test on albino rabbits. The results suggest that the combination of orthogonal design and Box-Behnken design is efficient and reliable in the optimization of nanocarriers, and chitosanSLNs is a potential carrier for ophthalmic administration.

关键词： solid lipid nanoparticle orthogonal design Box-Behnken design ophthalmic administration chitosan

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基于复振幅调制的半导体激光光束整形方法

中国激光 2018年第6期45卷 147-154页

作者：陈本永徐哲毅张世华陈瑞品严利平浙江理工大学纳米测量技术实验室浙江杭州310018

为了改善半导体激光光束质量,使其能够满足大距离高精度干涉测量的要求,使用空间光调制器对半导体激光光束进行整形,提出了一种基于复振幅调制算法的光束整形方法。利用该方法可将半导体激光光束整形为准直性好、光强分布均匀的无像散...

为了改善半导体激光光束质量,使其能够满足大距离高精度干涉测量的要求,使用空间光调制器对半导体激光光束进行整形,提出了一种基于复振幅调制算法的光束整形方法。利用该方法可将半导体激光光束整形为准直性好、光强分布均匀的无像散基模高斯光束。通过光束质量分析对整形后的光束进行评估,实验结果显示整形后半导体激光光束在x和y方向的M2因子均趋于1,像散接近于0,验证了该光束整形方法的有效性。将提出的半导体激光光束整形方法应用于大距离干涉测量中,在8m处进行了微米级步进位移测量,与纳米位移工作台相比,所得结果达到了亚波长的测量精度。实验结果表明整形后的光束能够满足大距离高精度干涉测量的要求,验证了提出的半导体激光光束整形方法的可行性。

关键词：激光光学半导体激光器激光光束整形空间光调制器复振幅调制

Effect of nanometer-sized MgO particles on flux pinning in YBa_2Cu_30_(7-δ)

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Chinese science Bulletin 1997年第4期42卷 285-288页

作者： chen Qinghu FANG Minghu YE Xisheng JIAO Zhengkuan zhang Qirui WEN Haihu ZHAO Zhongxian Physics Department Zhejiang University Hangzhou China State Key laboratory for Superconductivity Institute of Physics Chinese Academy of Sciences Beijing China

As is well known, the relatively low critical current density J_c and the serious flux motion limit a variety of applications of high-temperature superconductors (HTSCs). The introduction

关键词： high-T_c superconductor flux pinning YBa2Cu3O7-δ nanometer-sized MgO particles.

Highly Ordered Supramolecular Assembled Networks Tailored by Bioinspired H-Bonding Confinement for Recyclable Ion-Transport Materials

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CCS Chemistry 2023年第6期5卷 1422-1432页

作者： chen-Yu Shi Qi zhang Bang-Sen Wang Dan-Dan He He Tian Da-Hui Qu Key laboratory for Advanced Materials and Joint International Research laboratory of Precision Chemistry and Molecular Engineering Feringa Nobel Prize Scientist Joint Research CenterInstitute of Fine ChemicalsFrontiers Science Center for Materiobiology and Dynamic ChemistrySchool of Chemistry and Molecular EngineeringEast China University of Science and TechnologyShanghai 200237

Controlling dynamic molecular self-assembly to finely tune macroscopic properties offers chemical solutions to rational material *** we report that combining disulfide-mediated ring-opening polymerization withβ-sheet-like H-bonding self-assembly can drive a direct small-molecular assembly into a layered ionic network with precise architectural tunability and controllable functions as ion-transport *** strategy enables a one-step evaporationinduced self-assembly from discrete small molecules to layered ionic networks with high *** interlayer distances can be readily engineered with nanometer accuracy by varying the length of the oligopeptide side *** synergy of the layered structure and hydrophilic terminal groups facilitates the formation and ordering of interlayer water channels,endowing the resulting membranes with high efficiency in transporting ***,the inherent dynamic nature of poly(disulfide)s allows chemical recycling to monomers under mild *** foresee that the robust strategy of combining dynamic disulfide chemistry and noncovalent assembly can afford many opportunities in designing smart materials with unique functions and applications.

关键词： dynamic chemistry poly(disulfide)s β-sheet-like H-bonds ion conductivity chemical recyclability

基于长度可变真空腔的激光干涉空气折射率测量误差分析与补偿

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仪器仪表学报 2021年第6期42卷 48-55页

作者：杨晔严利平陈本永楼盈天浙江理工大学纳米测量实验室杭州310018

为了解决基于长度可变真空腔的激光干涉空气折射率测量中透光窗片倾斜和真空腔内残余气压对测量精度的影响,本文分析了真空腔拉伸过程中透光窗片倾斜引入的误差,并提出了透光窗片倾斜误差检测和补偿方法,同时研究了真空腔内残余气压的...

为了解决基于长度可变真空腔的激光干涉空气折射率测量中透光窗片倾斜和真空腔内残余气压对测量精度的影响,本文分析了真空腔拉伸过程中透光窗片倾斜引入的误差,并提出了透光窗片倾斜误差检测和补偿方法,同时研究了真空腔内残余气压的测量和补偿方法。为了验证所提出方法的可行性,搭建了基于长度可变真空腔的激光干涉空气折射率测量系统,测量结果与Edlén公式结果进行对比。实验结果显示,本系统测量结果与Edlén公式结果具有较好的一致性,在2.2 h和20 min内,两者之间偏差的标准偏差分别为2.34×10^(-8)和2.89×10^(-8),这表明本文所提出的空气折射率测量误差补偿方法是可行和有效的,可应用于激光干涉精密位移测量中空气折射率的实时补偿。

关键词：激光干涉空气折射率测量长度可变真空腔 Edlén公式误差补偿