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A computational framework for guiding the MOCVD-growth of wafer-scale 2D materials

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npj Computational Materials 2022年第1期8卷 2300-2307页

作者： Kasra Momeni yanzhou ji Nadire Nayir Nuruzzaman Sakib Haoyue Zhu Shiddartha Paul Tanushree H.Choudhury Sara Neshani Adri C.T.van Duin Joan M.Redwing Long-Qing Chen Department of Mechanical Engineering The University of AlabamaTuscaloosa35487ALUSA Department of Materials Science and Engineering The Pennsylvania State UniversityUniversity Park16802PAUSA Department of Mechanical Engineering Pennsylvania State UniversityUniversity Park16802PAUSA 2-Dimensional Crystal Consortium(2DCC)Materials Innovation Platform Materials Research InstituteThe Pennsylvania State UniversityUniversity ParkPA16802USA Department of Physics Karamanoglu Mehmetbey UniversityKaraman70000Turkey Department of Electrical Engineering The University of AlabamaTuscaloosa35487ALUSA

Reproducible wafer-scale growth of two-dimensional(2D)materials using the Chemical Vapor Deposition(CVD)process with precise control over their properties is challenging due to a lack of understanding of the growth mechanisms spanning over several length scales and sensitivity of the synthesis to subtle changes in growth conditions.A multiscale computational framework coupling Computational Fluid Dynamics(CFD),Phase-Field(PF),and reactive Molecular Dynamics(MD)was developed–called the CPM model–and experimentally *** between theoretical predictions and thorough experimental measurements for a Metal-Organic CVD(MOCVD)-grown WSe_(2)model material revealed the full power of this computational ***-area uniform 2D materials are synthesized via MOCVD,guided by computational *** developed computational framework provides the foundation for guiding the synthesis of wafer-scale 2D materials with precise control over the coverage,morphology,and properties,a critical capability for fabricating electronic,optoelectronic,and quantum computing devices.

关键词： MOCVD precise synthesis

La_(0.67)Sr_(0.33)MnO_(3)薄膜相图的轨道弹性调控

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Science China Materials 2024年第2期67卷 619-628页

作者：高昂张庆华刘倬卉孟繁琦尚彤彤尼浩黄河意杜剑宇李欣岩于搏涛苏东金奎娟葛琛吉彦舟王博余倩张泽陈龙庆谷林南策文 Beijing National Center for Electron Microscopy and Laboratory of Advanced Materials School of Materials Science and EngineeringTsinghua UniversityBeijing 100084China Beijing National Laboratory for Condensed Matter Physics Institute of PhysicsChinese Academy of SciencesBeijing 100190China State Key of Laboratory of New Ceramics and Fine Processing School of Materials Science and EngineeringTsinghua UniversityBeijing 100084China College of Science China University of Petroleum(East China)Qingdao 266580China Materials Research Institute and Department of Materials Science and Engineering The Pennsylvania State UniversityUniversity ParkPA16802 USA School of Materials Science and Engineering Zhejiang UniversityHangzhou 312227China

过渡金属氧化物具有丰富的功能性,但其错综复杂的内部自由度对相图绘制和结构设计提出了挑战.本文中,我们引入了描述相图物理起源的轨道能级序(ELO),并通过对La_(0.67)Sr_(0.33)MnO_(3)(LSMO)氧化物的研究证明了其在相图预测中的有效性... 详细信息

过渡金属氧化物具有丰富的功能性,但其错综复杂的内部自由度对相图绘制和结构设计提出了挑战.本文中,我们引入了描述相图物理起源的轨道能级序(ELO),并通过对La_(0.67)Sr_(0.33)MnO_(3)(LSMO)氧化物的研究证明了其在相图预测中的有效性.结合DFT计算和实验,我们构建了氧含量和应变关联的LSMO相图,结果表明LSMO结构稳定性与ELO密切相关.据此发现了一种由ELO演化而产生的四倍氧有序相.最后,我们提出了描述轨道分裂程度的轨道弹性定律,阐明了ELO演化的起源,助力功能氧化物的设计.这项研究拓宽了材料科学领域的性能调控手段,并为从轨道角度预测相图提供了思路.

关键词： phase diagram orbital energy level orbital elasticity law structural design La_(0.67)Sr_(0.33)MnO_(3)films

Multiscale computational understanding and growth of 2D materials:a review

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npj Computational Materials 2020年第1期6卷 1484-1501页

作者： Kasra Momeni yanzhou ji Yuanxi Wang Shiddartha Paul Sara Neshani Dundar E.Yilmaz Yun Kyung Shin Difan Zhang jin-Wu jiang Harold S.Park Susan Sinnott Adri van Duin Vincent Crespi Long-Qing Chen Mechanical Engineering Department Louisiana Tech UniversityRustonLA 71272USA Department of Mechanical Engineering University of AlabamaTuscaloosaALUSA Institute for Micromanufacturing Louisiana Tech UniversityRustonLAUSA Materials Research Institute The Pennsylvania State UniversityUniversity ParkPA 16802USA Department of Materials Science and Engineering The Pennsylvania State UniversityUniversity ParkPA 16802USA 2-Dimensional Crystal Consortium The Pennsylvania State UniversityUniversity ParkPA 16802USA Department of Physics The Pennsylvania State UniversityUniversity ParkPA 16802USA Department of Electrical Engineering Iowa State UniversityAmesIA 50010USA Mechanical Engineering Department The Pennsylvania State UniversityUniversity ParkPA 16802USA Shanghai Institute of Applied Mathematics and Mechanics Shanghai Key Laboratory of Mechanics in Energy EngineeringShanghai UniversityShanghai 200072China Department of Mechanical Engineering Boston UniversityBostonMA 02215USA Department of Engineering Science and Mechanics The Pennsylvania State UniversityUniversity ParkPA 16802USA Department of Mathematics The Pennsylvania State UniversityUniversity ParkPA 16802USA

The successful discovery and isolation of graphene in 2004,and the subsequent synthesis of layered semiconductors and heterostructures beyond graphene have led to the exploding field of two-dimensional(2D)materials that explore their growth,new atomic-scale physics,and potential device *** review aims to provide an overview of theoretical,computational,and machine learning methods and tools at multiple length and time scales,and discuss how they can be utilized to assist/guide the design and synthesis of 2D materials beyond graphene.

关键词： synthesis utilized subsequent

基于技能竞赛的电子商务类专业社团建设与实践

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创新创业理论研究与实践 2023年第8期6卷 166-169页

作者：季研洲杨凌职业技术学院陕西杨凌712100

随着我国经济体系建设的不断完善和发展,企业需要加快对自身产业结构的转型升级与网络化发展,因此,对电子商务专业技术技能型人才的需求越来越迫切。专业技能型的学生社团对促进职业院校就业率的提高有积极作用,它为学生提供了学习交流... 详细信息

随着我国经济体系建设的不断完善和发展,企业需要加快对自身产业结构的转型升级与网络化发展,因此,对电子商务专业技术技能型人才的需求越来越迫切。专业技能型的学生社团对促进职业院校就业率的提高有积极作用,它为学生提供了学习交流和参与实践的平台,在提高学生专业素养,强化学生专业技能,为培养优秀人才方面发挥重要作用。该文基于技能竞赛的社团建设背景,对电子商务类专业技能型学生社团建设实践进行详细说明,以期为同行业提供相应的理论参考。

关键词：技能竞赛电子商务社团建设高职院校高职教育就业

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渠道现浇混凝土衬砌合理分缝间距与缝宽探讨

人民黄河 2018年第3期40卷 153-156页

作者：季研洲李宗利黄瑞涛西北农林科技大学水利与建筑工程学院陕西杨凌712100 中国建筑第六工程局有限公司天津桥梁分公司天津300451

现场浇筑的混凝土衬砌结构,分缝设计的合理性对渠道正常运行和使用寿命有较大影响。目前实际工程中的分缝间距和分缝宽度均按经验取值,未考虑不同类型渠基对衬砌底板的水平阻力系数、衬砌板厚度、渠基与衬砌板表面的温度差、混凝土的强... 详细信息

现场浇筑的混凝土衬砌结构,分缝设计的合理性对渠道正常运行和使用寿命有较大影响。目前实际工程中的分缝间距和分缝宽度均按经验取值,未考虑不同类型渠基对衬砌底板的水平阻力系数、衬砌板厚度、渠基与衬砌板表面的温度差、混凝土的强度等级等因素对取值的影响。通过理论推导,提出能合理计算伸缩缝间距和缝宽的方法,给出物理意义明确的计算公式,供工程设计参考。

关键词：渠道衬砌现浇混凝土分缝分缝间距水平阻力系数

Author Correction: A computational framework for guiding the MOCVD-growth of wafer-scale 2D materials

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npj Computational Materials 2022年第1期8卷 2392-2392页

作者： Kasra Momeni yanzhou ji Nadire Nayir Nuruzzaman Sakib Haoyue Zhu Shiddartha Paul Tanushree H.Choudhury Sara Neshani Adri C.Tvan Duin Joan M.Redwing Long-Qing Chen Department of Mechanical Engineering The University of Alabama Tuscaloosa 35487 AL USA Department of Materials Science and Engineering The Pennsylvania State University University Park 16802 PA USA 2-Dimensional Crystal Consortium (2DCC) Materials Innovation Platform Materials Research Institute The Pennsylvania State University University Park PA 16802 USA Department of Mechanical Engineering Pennsylvania State University University Park 16802 PA USA Department of Physics Karamanoglu Mehmetbey University Karaman 70000 Turkey Department of Electrical Engineering The University of Alabama Tuscaloosa 35487 AL USA

In this article the author name Nuruzzaman Sakib was incorrectly written as Nurruzaman *** original article has been corrected.

关键词： MOCVD wafer corrected

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高职院校职业生涯规划教育体系的构建

创新创业理论研究与实践 2022年第10期5卷 144-146页

作者：季研洲王洋雍楚婷杨凌职业技术学院陕西杨凌712100

高职院校必须清晰地认识到为社会培养更多可用人才的重要性。社会就业形势不断变化,高职院校学生就业能力受到了社会各界的广泛关注。除社会经济发展等客观因素对高职学生就业产生的影响外,高职院校学生本身的职业生涯规划体系构建也对... 详细信息

高职院校必须清晰地认识到为社会培养更多可用人才的重要性。社会就业形势不断变化,高职院校学生就业能力受到了社会各界的广泛关注。除社会经济发展等客观因素对高职学生就业产生的影响外,高职院校学生本身的职业生涯规划体系构建也对其工作与就业起到了重要作用,如何强化对高职院校职业生涯规划教育体系的构建成为高职院校发展面临的重要问题。

关键词：高职学生职业生涯规划体系构建

Molecular mechanism of the inhibition effect of Lipoxin A4 on corneal dissolving pathology process

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International Journal of Ophthalmology(English edition) 2013年第1期6卷 39-43页

作者： Hong-yanzhou ji-Long Hao Miao-Miao Bi Shuang Wang Hong Zhang Wen-Song Zhang Department of Ophthalmology China-Japan Union Hospital of Jilin University Department of Ophthalmology the Second Hospital of Jilin University

AIM:Excessive dissolve of corneal tissue induced by MMPs which were activated by cytokins and chemokines will lead to corneal ulcer. The molecular mechanism of Lipoxin A4 (LXA4) on corneal collagen degradation in three dimensions was investigated. ·METHODS:Rabbit corneal fibroblasts were harvested and suspended in serum -free MEM. Type I collagen, DMEM, collagen reconstitution buffer and corneal fibroblast suspension were mixed on ice. The resultant mixture solidified in an incubator, after which test reagents and plasminogen was overlaid and the cultures were returned to the incubator. The supernatants from collagen gel incubations were collected and the amount of hydroxyproline in the hydrolysate was measured. Immunoblot analysis of MMP-1,-3 and TMMP-1,-2 was performed. MMP-2, -9 was detected by the method of Gelatin zymography. Cytotoxicity assay was measured. RESULTS:LXA4 inhibited corneal collagen degradation in a dose and time manner. LXA4 inhibited the IL -1β induced increases in the pro-MMP-1, -2, -3, -9 and active MMP -1,-2,-3,-9 in a concentration dependent manner. LXA4 also inhibited the IL-1β induced increases in TIMP-1, -2. CONCLUSION:As a potent anti-inflammation reagent, LXA4 can inhibit corneal collagen degradation induced by IL-1β in corneal fibroblasts thus inhibiting corneal dissolving pathology process.

关键词： lipoxin A4 IL-1β cornea collagen dissolution

Engineering coordinate system for vertical mine region based on GPS technique

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中国有色金属学会会刊：英文版 2005年第S1期15卷 225-229页

作者： LU Xiu-shan~1, ZHANG Dong-jian~2, ZHEN Zuo-ya~3, HAN Xiao-dong~1, GUO Heng-qing~2 (1. School of Geoscience and Technology, Shandong University of Science and Technology, Tai’an 701019, China 2. yanzhou Coal Industry Group Company, ji’ning 272100, China 3. Shanghai Astronomical Observatories, Chinese Academy of Sciences, Shanghai 200030, China)

For the problems existing in control network of vertical mine region established by conventional way, this paper advances a new scheme of establishing engineering coordinate system for vertical mine region. Based on the GPS positioning technique, through the relationship of coordinate transformation about a group of connecting points, the transforming parameters between the WGS-84 system and the Beijing54 system or Xi’an80 system about the region were calculated. The plane coordinate systems about the region can be maintained with a few of GPS control points using the method of GPS level, and fits the quasi-geoid about the region based on the Ellipsoid WGS-84. Huanghai Vertical Datum 1985 about the region can be maintained with the Ellipsoid WGS-84 as datum plane. Practice proves that there are advantages using the scheme to establish engineering coordinate system: the coordinate system as engineering foundation for vertical mine region will be in preservation for a long time; it is convenient and easy to carry out daily surveying work based on this coordinate system.

关键词： coordinate system control network GPS positioning GPS level quasi-geoid