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Template-assisted growth of Co-BaTiO_(3) vertically aligned nanocomposite thin films with strong magneto-optical coupling effect

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Nano Research 2024年第4期17卷 3130-3138页

作者： Zedong Hu juanjuan lu Hongyi Dou Jianan Shen James PBarnard Juncheng Liu Xinghang Zhang Haiyan Wang School of Electrical and Computer Engineering Purdue UniversityWest LafayetteIN 47906USA School of Materials Engineering Purdue UniversityWest LafayetteIN 47906USA

Oxide-metal based nanocomposite thin films have attracted great interests owing to their unique anisotropic structure and physical properties.A wide range of Au-based oxide-metal nanocomposites have been demonstrated,while other metal systems are scarce due to the challenges in the initial nucleation and growth as well as possible interdiffusions of the metallic *** this work,a unique anodic aluminum oxide(AAO)template was used to grow a thin Co seed layer and the following self-assembled metal-oxide(Co-BaTiO_(3))vertically aligned nanocomposite thin film *** AAO template allows the uniform growth of Co-seeds and successfully deposition of highly ordered Co pillars(with diameter<5 nm and interval between pillars<10 nm)inside the oxide *** magnetic anisotropy and strong magneto-optical coupling properties have been observed.A thin Au-BaTiO_(3) template was also later introduced for further enhanced nucleation and ordered growth of the *** the advantage of such a unique nanostructure,a large out-of-plane(OP)coercive field(Hc)of~5000 Oe has been achieved,making the nanocomposite an ideal candidate for high density perpendicular magnetic tunneling junction(p-MTJ).A strong polar magneto-optical Kerr effect(MOKE)has also been observed which inspires a novel optical-based reading method of the MTJ states.

关键词： vertically aligned nanocomposite(VAN) Co BaTiO_(3) thin film magneto-optical coupling magnetic anisotropy

Novel self-assembled two-dimensional layered oxide structure incorporated with Au nanoinclusions towards multifunctionalities

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Nano Research 2023年第1期16卷 1465-1472页

作者： Di Zhang Xingyao Gao juanjuan lu Ping lu Julia Deitz Jianan Shen Hongyi Dou Zihao He Zhongxia Shang C.Austin Wade Xinghang Zhang Aiping Chen Haiyan Wang School of Materials Engineering Purdue UniversityWest LafayetteIN 47907USA Center for Integrated Nanotechnologies(CINT) Los Alamos National LaboratoryLos AlamosNM 87545USA Sandia National Laboratories AlbuquerqueNM 87185USA School of Electrical and Computer Engineering Purdue UniversityWest LafayetteIN 47907USA Thermo Fisher Scientific HillsboroOR 97124USA

Two-dimensional(2D)layered oxides have recently attracted wide attention owing to the strong coupling among charges,spins,lattice,and strain,which allows great flexibility and opportunities in structure designs as well as multifunctionality *** parallel,plasmonic hybrid nanostructures exhibit exotic localized surface plasmon resonance(LSPR)providing a broad range of applications in nanophotonic devices and sensors.A hybrid material platform combining the unique multifunctional 2D layered oxides and plasmonic nanostructures brings optical tuning into the new *** this work,a novel self-assembled Bi2MoO6(BMO)2D layered oxide incorporated with plasmonic Au nanoinclusions has been demonstrated via one-step pulsed laser deposition(PLD)*** microstructural characterizations,including scanning transmission electron microscopy(STEM),differential phase contrast imaging(DPC),and STEM tomography,have demonstrated the high epitaxial quality and particle-in-matrix morphology of the BMO-Au nanocomposite ***-STEM imaging clarifies the magnetic domain structures of BMO *** different BMO structures including layered supercell(LSC)and superlattices have been revealed which is attributed to the variable strain states throughout the BMO-Au *** to the combination of plasmonic Au and layered structure of BMO,the nanocomposite film exhibits a typical LSPR in visible wavelength region and strong anisotropy in terms of its optical and ferromagnetic *** study opens a new avenue for developing novel 2D layered complex oxides incorporated with plasmonic metal or semiconductor phases showing great potential for applications in multifunctional nanoelectronics devices.

关键词： layered oxides plasmonic strain anisotropy multifunctionality

High-temperature characteristics of SiC module and 100 kW SiC AC–DC converter at a junction temperature of 180 ℃

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Global Energy Interconnection 2019年第6期2卷 522-531页

作者： juanjuan lu Zhe Zhou Jianhong Hao Yi Hao Hao Zhang Ruixiang Hao State Key Laboratory of Alternate Electrical Power System with Renewable Energy Sources North China Electric Power UniversityChangping DistrictBeijing 102206P.R.China State Key Laboratory of Advanced Transmission Technology Global Electricity Interconnection Research Institute Co.Ltd.Changping DistrictBeijing 102211P.R.China University of Bath Claverton DownBath BA27AYUK School of Electrical Engineering Beijing Jiaotong UniversityHaidian DistrictBeijing 100044P.R.China

High-temperature,high-power converters have gained importance in industrial applications given their ability to operate in adverse environments,such as in petroleum exploration,multi-electric aircrafts,and electric *** metaloxide-semiconductor field-effect transistor(MOSFET),a new,wide bandgap,high-temperature device,is the key component of these *** this study,the static and dynamic characteristics of the SiC MOSFET,half-bridge module,are investigated at the junction temperature of 180℃.A simplified experimental method is then proposed pertaining to the power operation of the SiC module at 180℃.This method is based on the use of a thermal resistance test platform and is proven convenient for the study of heat dissipation *** high-temperature characteristics of the module are verified based on the conducted ***,a 100 kW high-temperature converter is built,and the test results show that the SiC converter can operate at a junction temperature of 180℃in a stable manner in compliance with the requirements of high-temperature,high-power applications.

关键词： SiC MOSFET module Static and dynamic characteristics Power operation experimental method Heat dissipation characteristics SiC AC-DC converter

Dynamic phasor-based hybrid simulation for multi-inverter grid-connected system

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Global Energy Interconnection 2023年第2期6卷 197-204页

作者： Peng Yang Qian Li Junyu Zhao juanjuan lu Yunfei Xu State Grid Hebei Electric Power Co.Ltd. Shijiazhuang 050021P.R.China State Grid Baoding Power Supply Company Baoding 071051P.R.China State Grid Smart Grid Research Institute Co.Ltd. Beijing 102200P.R.China

To realize the efficient transient simulation of a grid-connected power generation system based on multiple inverters, this paper proposes a hybrid simulation method integrating the models of electromagnetic transient and dynamic phasors. Based on a demonstration of the concepts and properties of dynamic phasors, the models of single-phase and three-phase inverters described by dynamic phasors are established first. Considering the numerical compatibility problem between dynamic phasors and instantaneous values, an interface scheme between dynamic phasors and instantaneous values is designed, and the efficiency and precision differences of various transformation methods are compared in ***, by utilizing MATLAB/Simulink, a hybrid simulation platform of a multi-inverter grid-connected system is built, and the efficiency and accuracy of the hybrid simulation are validated via comparison with the full electromagnetic transient simulation.

关键词： Multi-inverter grid-connected system Electromagnetic transient Dynamic phasor Hybrid simulation

A Review:Toxicity of Ammonia-N to Fish and Detoxification Strategy of Fish

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Animal Husbandry and Feed Science 2018年第5期10卷 306-310页

作者： Fu Ying lu juanjuan Pi Jie Hunan Applied Technology University Changde 415000China

In natural water, the content of ammonia nitrogen is always kept at a low level. However, the ammonia nitrogen content in water will be elevated or even excessive when the density of aquaculture is too large or exogenous ammonia are discharged into the water, causing a series of ad-verse effects on fish survival. Within a certain range, fishes reduce ammonia production in vivo by converting ammonia into glutamine and urea, and increase NH3 volatilization and NH4+emissions to ease ammonia toxicity, but the ability to alleviate ammonia poisoning vary with fish species and size. The ammonia nitrogen sources, existence form, factors affecting toxicity, toxic mechanism and detoxification strategy of fish are reviewed, in or-der to provide reference for improving the ability of fish to alleviate ammonia nitrogen toxicity and healthy farming.

关键词： Ammonia-N Fish Ammonia toxicity

Stimulated Brillouin interaction between guided phonons and photons in a lithium niobate waveguide

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Science China(Physics,Mechanics & Astronomy) 2024年第1期67卷 173-175页

作者： Yuan-Hao Yang Jia-Qi Wang Zheng-Xu Zhu Xin-Biao Xu Qiang Zhang juanjuan lu Yu Zeng Chun-Hua Dong luyan Sun Guang-Can Guo Chang-Ling Zou CAS Key Laboratory of Quantum Information University of Science and Technology of ChinaHefei 230026China CAS Center for Excellence in Quantum Information and Quantum Physics University of Science and Technology of ChinaHefei 230026China Key Laboratory of Quantum Optics and Quantum Optics Devices Institute of Opto-ElectronicsShanxi UniversityTaiyuan 030006China School of Information Science and Technology ShanghaiTech UniversityShanghai 201210China Center for Quantum Information Institute for Interdisciplinary Information SciencesTsinghua UniversityBeijing 100084China

The Brillouin scattering is one of the strongest nonlinear optical effects in dielectrics[1].In particular,the backward Brillouin scattering(BBS)provides an efficient method to achieve low-noise optical gain for active photonics[2]and the coherent interconnects between 10 GHz phonons and photons[3].However,previous studies on BBS are primarily limited to the unconfined phonons[1]or phonon confined in suspended structures[4-6].

关键词： scattering waveguide Brillouin

HbA1c in the diagnosis of diabetes and abnormal glucose tolerance in patients with Graves' hyperthyroidism

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HbA1c in the diagnosis of diabetes and abnormal glucose tole...

基于任意概率分布建模与改进混沌多项式展开的概率潮流方法

中华医学会第十二次全国内分泌学学术会议

作者： Liyong Yang Ximei Shen Sunjie Yan Xin Yuan juanjuan lu Wenfeng Wei Endocrinology Department the First Affiliated Hospital of Fujian Medical University

OBJECTIVE To assess the suitability of HbAlc as criteria for diagnosis of diabetes in patients with Graves’disease. METHODS This study enrolled 310 patients with untreated newly diagnosed Graves’disease,208 patients...

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来源： cnki会议评论

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电力系统自动化 2024年第18期48卷 167-176页

作者：李可萌王毅闪鑫陆娟娟南瑞集团有限公司(国网电力科学研究院有限公司) 江苏省南京市211106 国电南瑞科技股份有限公司江苏省南京市211106

针对目前概率潮流难以兼顾准确度和速度,且缺乏有效处理任意概率分布源荷数据的手段,提出了基于任意概率分布建模策略和改进混沌多项式展开的概率潮流方法。首先,将系统输入量拟合为概率分布类型库中的概率分布,基于赤池信息量准则选取... 详细信息

针对目前概率潮流难以兼顾准确度和速度,且缺乏有效处理任意概率分布源荷数据的手段,提出了基于任意概率分布建模策略和改进混沌多项式展开的概率潮流方法。首先,将系统输入量拟合为概率分布类型库中的概率分布,基于赤池信息量准则选取最优分布,比较最优分布和非参核密度估计的似然估计值确定最终概率分布。其次,为提升最小角回归广义混沌多项式展开的准确度,提出应用伪谱法和矩匹配法获取备选点集合,并使用组合概率窗对其筛选获得最优备选点。然后,对原始概率空间执行拉丁超立方采样获取补充配置点,并与最优备选点结合后得到最终配置点。所提方法在IEEE 30、IEEE 118节点算例中得到验证,在相近耗时下,所提方法的准确度较不确定量化计算框架UQLab推荐算法有显著提升。

关键词：概率潮流概率分布建模参数估计混沌多项式展开最小角回归不确定性量化

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河工模型数据通信协议的智能化识别方法

实验室研究与探索 2018年第4期37卷 145-147,189页

作者：鲁娟娟陈红正德职业技术学院电子与信息技术系南京211106 河海大学水利水电学院南京210098

河工模型试验测量参数多、仪器多,数据交互难度大,为此,建立了数据库的通信协议智能化识别方法。将功能码和数据码分别存储至对应数据表,数据采集时打开相应功能码表调用命令,发送给对应仪器;同时,接收仪器返回数据,再打开数据码表进行... 详细信息

河工模型试验测量参数多、仪器多,数据交互难度大,为此,建立了数据库的通信协议智能化识别方法。将功能码和数据码分别存储至对应数据表,数据采集时打开相应功能码表调用命令,发送给对应仪器;同时,接收仪器返回数据,再打开数据码表进行数据解析,从而实现不同通信协议仪器的数据交互。以赣江南昌段河工模型为例,运用智能识别方法采集流速、水位等数据,试验结果表明,该智能化识别方法可准确完成不同仪器数据采集,简化了数据交互程序,提升了上位机应用系统通用性和生命周期。

关键词：通信协议数据库河工模型智能识别