检索结果-南通市图书馆

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

极紫外光刻材料研究进展

红外与激光工程 2014年第6期43卷 1850-1856页

作者：耿永友邓常猛吴谊群中国科学院上海光学精密机械研究所中国科学院强激光材料重点实验室上海201800

极紫外光刻是微电子领域有望用于下一代线宽为22nm及以下节点的商用投影光刻技术,光刻材料的性能与工艺是其关键技术之一。为我国开展极紫外光刻材料研究提供参考,综述了最近几年来文献报道的研究成果,介绍了极紫外光刻技术发展历程、... 详细信息

极紫外光刻是微电子领域有望用于下一代线宽为22nm及以下节点的商用投影光刻技术,光刻材料的性能与工艺是其关键技术之一。为我国开展极紫外光刻材料研究提供参考,综述了最近几年来文献报道的研究成果,介绍了极紫外光刻技术发展历程、现状、光刻特点及对光刻材料的基本要求,总结了极紫外光刻材料的研究领域和具体分类,着重阐述了主要光刻材料的组成、光刻原理,光刻性能所达到的水平和存在的主要问题,最后探讨了极紫外光刻材料未来的主要研究方向。

关键词：极紫外光刻极紫外光刻材料极紫外光刻性能

在线全文

学校读者我要写书评

暂无评论

光盘光固化复制工艺中玻璃基片表面改性

激光技术 1999年第6期23卷 353-355页

作者：耿永友王豪中国科学院上海光学精密机械研究所上海201800

测定了光固化膜分别与玻璃基片、金属Ｎｉ模的结合力。采用预涂ＰＭＭＡ底化层、使用α型硅烷偶联剂和ＳＯＬＧＥＬ法制备衬底三种方法对玻璃基片表面进行改性并作比较，来选择合理的、经济的工艺路线。运用此工艺复制了ＣＤ唱... 详细信息

测定了光固化膜分别与玻璃基片、金属Ｎｉ模的结合力。采用预涂ＰＭＭＡ底化层、使用α型硅烷偶联剂和ＳＯＬＧＥＬ法制备衬底三种方法对玻璃基片表面进行改性并作比较，来选择合理的、经济的工艺路线。运用此工艺复制了ＣＤ唱片，并用ＳＥＭ

关键词：光固化复制工艺玻璃基片表面改性光盘

在线全文

学校读者我要写书评

暂无评论

激光光刻技术的研究与发展

红外与激光工程 2012年第5期41卷 1223-1231页

作者：邓常猛耿永友吴谊群中国科学院上海光学精密机械研究所中国科学院强激光材料重点实验室上海201800 中国科学院研究生院北京100049 功能无机材料化学省部共建教育部重点实验室(黑龙江大学) 黑龙江哈尔滨150080

光刻技术作为制备半导体器件的关键技术之一将制约着半导体行业的发展和半导体器件的性能。随着半导体工业的发展,集成电路的特征尺寸越来越小,光刻技术将面临新的挑战。分析了激光光刻技术,包括投影式光刻和激光无掩膜光刻技术的研究现... 详细信息

光刻技术作为制备半导体器件的关键技术之一将制约着半导体行业的发展和半导体器件的性能。随着半导体工业的发展,集成电路的特征尺寸越来越小,光刻技术将面临新的挑战。分析了激光光刻技术,包括投影式光刻和激光无掩膜光刻技术的研究现状,着重介绍了极紫外光刻(EUVL)作为下一代光刻技术的发展前景和技术难点、激光无掩膜光刻技术的发展,特别是激光近场扫描光刻、激光干涉光刻、激光非线性光刻等新技术的最新进展及其在高分辨率纳米加工领域的应用前景。

关键词：投影式光刻无掩膜光刻发展趋势

在线全文

学校读者我要写书评

暂无评论

微空间主流意识形态边缘化危机及消解策略

重庆邮电大学学报（社会科学版） 2017年第5期29卷 1-6页

作者：王永友耿春晓西南大学马克思主义理论研究中心重庆400715

微空间的主体多样性、信息碎片化、文化多元性为各种思想观念、价值理念的传播提供了平台,对微空间主流意识形态的主导性形成挑战、权威性产生冲击、理论性带来消解,导致主流意识形态出现边缘化危机。要克服微空间中淡化意识形态思潮渗... 详细信息

微空间的主体多样性、信息碎片化、文化多元性为各种思想观念、价值理念的传播提供了平台,对微空间主流意识形态的主导性形成挑战、权威性产生冲击、理论性带来消解,导致主流意识形态出现边缘化危机。要克服微空间中淡化意识形态思潮渗透、主流意识形态"失语"、传播信息整合能力弱化的影响,必须增强微空间主流意识形态的主导向心力和辐射凝聚力意识,通过更新话语体系提升微空间主流意识形态的话语效力,强化人文关怀改进微空间主流意识形态的话语方式,重视培养微空间主流意识形态队伍的媒介素养与隐性传播方式的运用,建立和完善微空间信息评估反馈监管机制,加强主流意识形态对微空间信息的整合力度,以消解微空间主流意识形态边缘化危机。

关键词：微空间主流意识形态边缘化危机消解策略

Mixed Dead-time Effect Suppression Strategy for Modular Multilevel Converters

在线全文

学校读者我要写书评

暂无评论

CSEE Journal of Power and Energy Systems 2024年第3期10卷 1075-1084页

作者： Zhi geng Minxiao Han School of Electrical and Electronic Engineering North China Electric Power UniversityBeijing 102206China IEEE

Dead time is necessary for the coupled power switches to prevent shoot-through,especially in the modular multilevel converters(MMCs)with a large number of power *** paper proposes a dead-time effect suppression strategy for MMCs with nearest level *** operational principles of MMCs are first *** to the operational features of MMCs,the method that removes a switching signal from the coupled switches and the reduced switching frequency voltage balancing algorithms(RSFVBAs)are mixed in the proposed *** the intervals that are furthest away from the zerocrossing points(ZCP)of arm currents,the single switching signal method can completely eliminate the dead-time effect(DTE).Alternatively,the DTE is suppressed by the RSFVBA in intervals that are close to the *** the combination of the two methods,the dependence of the DTE suppression method on currents is reduced and the influences of ZCP are also released without degrading the normal operation performance of ***,the output performance of MMCs is improved and the voltage stress on the arm inductor dramatically ***,the validation of the method is verified by the simulation results with the professional tool Matlab/Simulink.

关键词： Dead-time effect modular multilevel converters switching frequency voltage balancing algorithm

Boosting electrocatalytic nitrate reduction to ammonia via Cu_(2)O/Cu(OH)_(2)heterostructures promoting electron transfer

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Nano Research 2024年第6期17卷 4898-4907页

作者： Jing geng Sihan Ji Anhui Province International Research Center on Advanced Building Materials School of Materials Science and Chemical EngineeringAnhui Jianzhu UniversityHefei 230601China Anhui Province Key Laboratory of Advanced Building Materials Anhui Jianzhu UniversityHefei 230601China School of Energy Materials and Chemical Engineering Hefei UniversityHefei 230601China

Electrocatalytic nitrate(NO_(3)^(−))reduction to ammonia(NH_(3))offers a viable approach for sustainable NH_(3)production and environmental ***(Cu)possesses a distinctive electronic structure,which can augment the reaction kinetics of NO_(3)^(−)and impede hydrogen evolution reaction(HER),rendering it a promising contender for the electrosynthesis of NH_(3)from NO_(3)^(−).Nevertheless,the role of Cu_(2)O in copper-based catalysts still requires further investigation for a more comprehensive ***,the Cu_(2)O/Cu(OH)_(2)heterostructures are successfully fabricated through liquid laser irradiation using CuO nanoparticles as a *** and theoretical researches reveal that Cu_(2)O/Cu(OH)_(2)heterostructure exhibits enhanced electrocatalytic performance for NO_(3)^(−)to NH_(3)because Cu(OH)_(2)promotes electron transfer and reduces the valence state of Cu active site in Cu_(2)***−0.6 V(*** hydrogen electrode(RHE)),the NH_(3)yield reaches its maximum at 1630.66±29.72μg·h^(−1)·mgcat^(−1),while the maximum of Faraday efficiency(FE)is 76.95%±5.51%.This study expands the technical scope of copper-based catalyst preparation and enhances the understanding of the electrocatalytic mechanism of NO_(3)^(−)to NH_(3).

关键词： Cu_(2)O/Cu(OH)_(2)heterostructures electron transfer ammonia synthesis electrocatalysts nitrate

Structural engineered living materials

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Nano Research 2024年第2期17卷 715-733页

作者： Yang geng Zian Jia Ling Li 635 Prices Fork Road Department of Mechanical EngineeringVirginia Polytechnic Institute and State UniversityBlacksburg VA24061USA

Biological structural materials not only exhibit remarkable mechanical properties but also often embody dynamic characteristics such as environmental responsiveness,autonomy,and self-healing,which are difficult to achieve in conventional engineering *** merging materials science,synthetic biology,and other disciplines,engineered living materials(ELMs)provide a promising solution to combine living organisms with abiotic components,thus facilitating the construction of functional“living”*** natural materials,ELMs possess vitality and hold immense application potential in areas such as medicine,electronics,and construction,captivating increasing research attention *** an emerging branch of ELMs,structural ELMs aim to mimic living biological structural materials by achieving desired mechanical performance while maintaining important“living”*** we summarize the recent progress and provide our perspectives for this emerging research *** first summarize the superiority of structural ELMs by reviewing biological structural materials and biomimetic material design ***,we provide a systematic discussion on the definition and classifications of structural ELMs,their mechanical performance,and physiological ***,we summarize some critical challenges faced by structural ELMs and highlight directions of future *** hope this review article can provide a timely summary of the state of the art and relevant perspectives for future development of structural ELMs.

关键词： structural materials engineered living materials(ELMs) structural ELMs composites mechanical properties

Optimizing urban block morphologies for net-zero energy cities:Exploring photovoltaic potential and urban design prototype

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Building Simulation 2024年第4期17卷 607-624页

作者： Xiaotian geng Dong Xie Zhonghua Gou School of Urban Design Wuhan UniversityWuhanChina

The morphology of urban areas plays a crucial role in determining solar potential,which directly affects photovoltaic capacity and the achievement of net-zero *** study focuses on the City of Melbourne to investigate the utilization of solar energy across different urban densities and proposes optimized *** analysis encompasses blocks with diverse population densities,examining medium and high-density *** utilizing a multi-objective genetic optimization approach,the urban morphology of these blocks is *** findings indicate that low-density blocks exhibit photovoltaic potential ranging from 1 to 6.6 times their total energy *** and high-density blocks achieve photovoltaic potential levels approximately equivalent to 40%-85%of their overall energy ***,significant variations in photovoltaic potential are observed among different urban forms within medium and high-density ***“elevated corners with central valley”prototype is proposed as an effective approach,enhancing the overall photovoltaic potential by approximately 14%.This study introduces novel analytical concepts,shedding light on the intricate relationship between urban morphologies and photovoltaic potential.

关键词： net-zero energy solar energy urban density urban morphology multi-objective optimization photovoltaic potential

Point defects in 2-D liquid crystals with a singular potential:Profiles and stability

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Science China Mathematics 2024年第11期67卷 2515-2540页

作者： Zhiyuan geng Wei Wang Basque Center for Applied Mathematics School of Mathematical Sciences Zhejiang University

We study radial symmetric point defects with degree k/2 in the 2-D disk or R2in the Q-tensor framework with a singular bulk energy,which is defined by Bingham ***,we obtain the existence of solutions for the profiles of radial symmetric point defects with degree k/2 in the 2-D disk or ***,we prove that the solution is stable for |k| = 1 and unstable for |k| > *** identities are derived and utilized throughout the proof of existence and stability/instability.

关键词： radial symmetric point defects singular bulk potential Bingham closure stability

同方期刊数据库