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Microstructure and magnetic properties of Ti/Co/Ti films

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Rare Metals 2006年第z1期25卷 450-453页

作者： FENG Shunzhen ZHANG yujie ZHANG Hanwei sun Huiyuan College of Physics Science and Information Engineering Hebei Normal University Shijiazhuang 050016 China College of Physics Science and Information Engineering Hebei Normal University Shijiazhuang 050016 China College of Physics Science and Information Engineering Hebei Normal University Shijiazhuang 050016 China College of Physics Science and Information Engineering Hebei Normal University Shijiazhuang 050016 China

The two series of as-deposited and annealed Ti/Co/Ti thin films were deposited by magnetron sputtering onto glass substrates at room temperature. The structural and magnetic properties of the films at room temperature were investigated as function of Co layer thickness. X-ray diffraction (XRD) profiles show Co nanograins are formed as the hexagonal-close-packed (hcp) structure. The perpendicular coercivity of the Ti(15 nm)/Co(30 nm)/Ti(15 nm) film annealed at 450 ℃ for 30 min is about 288 kA·m-1.

关键词： perpendicular magnetic recording coercivity Ti/Co/Ti thin films

Microstructure and magnetic properties of Ti/Ni/Ti in dependence on Ni layer thickness

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Rare Metals 2006年第z1期25卷 592-595页

作者： ZHANG Hanwei FENG Shunzhen ZHANG yujie sun Huiyuan College of Physics Science and Information Engineering Hebei Normal University Shijiazhuang 050016 China College of Physics Science and Information Engineering Hebei Normal University Shijiazhuang 050016 China College of Physics Science and Information Engineering Hebei Normal University Shijiazhuang 050016 China College of Physics Science and Information Engineering Hebei Normal University Shijiazhuang 050016 China

The films of Ti(15 nm)/Ni(t nm)/Ti(15 nm)(t=20, 30, 40, 50) were prepared by dc magnetron sputtering at room temperature and subsequent annealing at 400 ℃ for 30 min. Scanning probe microscope (SPM), vibrating sample magnetometer (VSM) and X-ray diffraction (XRD) were applied to study the magnetic properties and microstructure. AFM images show that small and uniform grains and some clusters appear with the increase of Ni thickness, also MFM images show that the size of domain first decreases and then increases. The coercivity reaches the maximum 48 kA·m-1 at t=30 nm. The XRD profiles show stronger fcc (111) orientation peak of Ni and weak hcp structure peaks of Ni3Ti. This results reveal that the crystal lines have the prefer orientation and achieve the ordered.

关键词： magnetic recording magnetron sputtering coercivity annealing

Hybrid water electrolysis:Replacing oxygen evolution reaction for energy-efficient hydrogen production and beyond

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Materials Reports(Energy) 2021年第1期1卷 141-154页

作者： Lijie Du yujie sun Bo You Key Laboratory of Material Chemistry for Energy Conversion and Storage Ministry of EducationSchool of Chemistry and Chemical EngineeringHuazhong University of Science and TechnologyWuhanHubei430074China Department of Chemistry University of CincinnatiCincinnatiOH45221USA

Renewable energy-driven hydrogen generation from water electrolysis has been widely recognized as a promising approach to utilize sustainable energy resources,reduce our dependence on legacy fossil fuels and alleviate net carbon dioxide ***,conventional water electrolyzers suffer from the high overpotentials,mainly due to the sluggish kinetics of anodic oxygen evolution reaction(OER).This reaction also generates reactive oxygen species that could degrade the proton exchange membrane and oxygen that may mix with the cathodic hydrogen to form explosive gaseous *** address these issues,an innovative hybrid water electrolysis strategy which involves a certain alternative oxidation reaction to replace OER has been developed,and has led to a burgeoning area that sparks much research interest in finding available alternative reactions and their corresponding ***,we summarize the alternative reactions into three groups:(1)the reagentsacrificing type that can generate H2 with an ultra-low potential while the substrates are oxidized to valueless products;(2)the pollutant-degrading type at which environmental pollutants are used as substrates;(3)the valueadded type that produces valuable products at the *** and electrolyzer designs for hybrid electrolysis are also briefly discussed,with an emphasis on the catalyst reconstruction ***,the present challenges and perspectives are put forward.

关键词： Hybrid water splitting Electrocatalysis Hydrogen evolution Organic oxidation

The characteristics of the structure, strain and kinematic vorticity of the Wulian detachment fault zone, Shandong Peninsula, China

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Science China Earth Sciences 2019年第9期62卷 1399-1415页

作者： Jinlong NI Junlai LIU yujie sun Xiaoxiao SHI Shen LI Shandong Provincial Key Laboratory of Depositional Mineralization and Sedimentary Minerals College of Earth Sciences and Engineering Shandong University of Science and Technology Qingdao 266590 China State Key Laboratory of Geological Processes and Mineral Resources China University of Geosciences Beijing 100083 China Laboratory for Marine Mineral Resources Qingdao National Laboratory for Marine Science and Technology Qingdao 266071 China Cores and Samples Center of Land & Resources China Geological Survey Langfang 065200 China

As one of the vital tectonic units of the Wulian Metamorphic Core Complex(MCC), the Wulian detachment fault zone(WDFZ), which developed in the Jiaodong peninsula, separates the lower plate of the ultrahigh pressure(UHP) metamorphic rocks in the Sulu orogenic belt from the upper plate of the early Cretaceous Zhucheng basin and the basin basement. The fault zone generally strikes NNE with a dip in the west along the southern portion of the MCC and strikes NE with a dip in the WNWalong the northern portion. The fault zone displays a wavy-tile-shaped extension on the plane, principally composed of the fault breccias and mylonite and transits downward to the mylonitic gneiss. As a whole, the detachment fault zone shows a top-towest or a WNW extension. By calculating the harmonic mean, we obtain a Flynn index K of 0.98–2.0, and the mean value is approximately 1.35 in the fault zone. According to the polar Mohr construction, the extensional crenulation cleavage, the RS/θ,and the quartz C-axial fabric methods, we acquire mean kinematic vorticity values of 0.64–0.97, 0.76–0.93, 0.6–0.92, and 0.63–0.98 with mean values of 0.83, 0.80, 0.78 and 0.86, respectively, for mylonite and promylonite. The strain measurement results and the kinematic vorticity values indicate that the WDFZ is a normal ductile shear zone developed in the extensional *** kinematic track shows that the kinematic vorticity value decreases gradually from the NW to the SE as a whole. A simple shear dominates in the middle and upper parts of the shear zone, which is reflected by a higher vorticity value(>0.75, up to 0.98),a low thinning rate and a lower K value. In contrast, toward the footwall, the pure shear is increased significantly, showing a lower vorticity value(<0.70, low to 0.64), a relatively high thinning rate and a higher K value. Combined with the geotectonic background, the development and evolution of the WDFZ should respond to lithospheric thinning and the destruction of the North China

关键词： Wulian Strain intensity Kinematic vorticity Mylonite Detachment fault zone

Characterization of liquid–liquid phase separation using super-resolution and single-molecule imaging

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Biophysics Reports 2022年第1期8卷 2-13页

作者： Hongchen Zhang Shipeng Shao yujie sun State Key Laboratory of Membrane Biology & Biomedical Pioneering Innovation Center (BIOPIC) & School of Future Technology Peking University School of Life Sciences Peking University Beijing Institute of Heart Lung and Blood Vessel Disease Beijing Anzhen Hospital Capital Medical University

Liquid–liquid phase separation(LLPS) is an emerging phenomenon involved in various biological processes. The formation of phase-separated condensates is crucial for many intrinsically disordered proteins to fulfill their biological functions. Using the recombinant protein to reconstitute the formation of condensates in vitro has become the standard method to investigate the behavior and function of ***, there is an urgent need to characterize the LLPS in living cells. Importantly, condensates formed through LLPS at physical relevant concentrations are often smaller than the optical diffraction limit, which makes precise characterization and quantification inaccurate due to the scatter of *** booming development of super-resolution optical microscopy enables the visualization of multiple obscured subcellular components and processes, which is also suitable for the LLPS research. In this protocol, we provide step-by-step instructions to help users take advantage of super-resolution imaging to depict the morphology and quantify the molecule number of endogenous condensates in living cells using RNA Pol II as an example. This streamlined workflow offers exceptional robustness, sensitivity, and precision, which could be easily implemented in any laboratory with an inverted total internal reflection microscope. We expect that super-resolution microscopy will contribute to the investigation of both large and tiny condensates under physiological and pathological conditions and lead our understanding of the mechanism of LLPS to a higher and deeper layer.

关键词： Super-resolution imaging Liquid–liquid phase separation Single-molecule imaging

Research on the synergic factors recognizing of traditional enterprise transformation and upgrading and technological innovation Hidden Markov Model 32

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Research on the synergic factors recognizing of traditional ...

Analysis on the elements of innovation ability of intelligent service industry based on the knowledge mining of books and documents 32

第32届中国控制与决策会议

作者： Wang Yumei sun Yetao Gao Jian sun yujie Qingdao University of Science and Technology

ISBN: (数字)9781728158556

ISBN: (纸本)9781728158563

This paper systematically analyzes the connotation of synergy of the traditional enterprise transformation and upgrading and technological innovation,establishing a synergic process model for traditional enterprise transformation and upgrading and technological innovation to analyze synergic *** divides the synergic factors into three categories: "general factors", "synergic factors to be transformed and upgraded and technologically innovated" and "synergic factors of transformation and upgrading and technological innovation".Taking Shandong Province as a case.

关键词： Synergic factor Traditional enterprise Transformation and upgrading Technological innovation

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Analysis on the elements of innovation ability of intelligen...

Preparation of spatially uniform monolayer FeSexTe1−x(0

第32届中国控制与决策会议

作者： Wang Yumei sun Yetao Gao Jian sun yujie Qingdao University of Science and Technology

ISBN: (数字)9781728158556

ISBN: (纸本)9781728158563

The arrival of knowledge economy and digital economy provides guidance for the transformation and upgrading of service *** advent of the era of knowledge economy has changed the face of traditional economic structure,and knowledge elements have gradually become the main thrust of economic growth and productivity *** also makes the traditional service industry have to undergo changes,so the intelligent service industry came into *** on the knowledge mining of books and documents,this paper holds that the intelligent service industry must have the following characteristics:high intelligence,high integration,high tracking,high individualization,high interaction and high *** on these characteristics,this paper constructs its innovation ability elements from technology,product,organization and management,brand and information communication,lists the internal and external factors that affect its innovation ability,and simply analyzes the operation mechanism of each factor on innovation ability,at the same time,it explores the reasonable development direction of the intelligent service industry,and paves the way for future research on the intelligent service industry.

关键词： Smart service industry ability to innovate influence factor

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Nano Research 2023年第1期16卷 1712-1716页

作者： Zhongxu Wei Cui Ding yujie sun Lili Wang Qi-Kun Xue Department of Physics Southern University of Science and TechnologyShenzhen 518055China State Key Laboratory of Low-Dimensional Quantum Physics Department of PhysicsTsinghua UniversityBeijing 10008China Beijing Academy of Quantum Information Sciences Beijing 100193China

Spatially uniform high-temperature superconducting films are highly desirable for exploring novel properties and popularizing *** improve the uniformity,we fabricate monolayer FeSexTe1−x(0 详细信息

Spatially uniform high-temperature superconducting films are highly desirable for exploring novel properties and popularizing *** improve the uniformity,we fabricate monolayer FeSexTe1−x(0

关键词： monolayer FeSexTe1−x interface superconductivity topotactic reaction scanning tunneling microscopy

Architectural proteins for the formation and maintenance of the 3D genome

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Science China(Life Sciences) 2020年第6期63卷 795-810页

作者： Mengfan Li Jingbo Gan Yuao sun Zihan Xu Junsheng Yang yujie sun Cheng Li Peking-Tsinghua Center for Life Sciences Academy for Advanced Interdisciplinary Studies School of Life Sciences Peking UniversityBeijing 100871China State Key Laboratory of Membrane Biology School of Life Sciences Biomedical Pioneering Innovation Center (BIOPIC) Peking UniversityBeijing 100871China Center for Statistical Science Center for Bioinformatics School of Life Sciences Peking UniversityBejjing 100871China

Eukaryotic genomes are densely packaged into hierarchical three-dimensional(3D) structures that contain information about gene regulation and many other biological processes. With the development of imaging and sequencing-based technologies, 3D genome studies have revealed that the high-order chromatin structure is composed of hierarchical levels, including chromosome territories, A/B compartments, topologically associated domains, and chromatin loops. However, how this chromatin architecture is formed and maintained is not completely clear. In this review, we introduce experimental methods to investigate the 3D genome, review major architectural proteins that regulate 3D chromatin organization in mammalian cells, such as CTCF(CCCTC-binding factor), cohesin, lamins, and transcription factors, and discuss relevant mechanisms such as phase separation.

关键词： 3D genome architectural protein Hi-C