检索结果-南通市图书馆

Organic Memristor Based on High Planar Cyanostilbene/Polymer Composite Films

Chemical Research in Chinese Universities 2023年第1期39卷 121-126页

作者： ZHAO Jinjin LI Wei WANG Xuechen WEI Xiao ZHU Huiwen QU Wenshan MEN Dandan gao Zhixiang WEI Bin gao hanfei WU Yuchen Department of Physics Shanxi Datong UniversityDatong037009P.R.China Key Laboratory of Bio-inspired Materials and Interfacial Science Technical Institute of Physics and ChemistryChinese Academy of SciencesBeijing100190P.R.China Ji Hua Laboratory Foshan528000P.R.China Shanxi Province Key Laboratory of Microstructure Electromagnetic Functional Materials Institute of Solid State PhysicsShanxi Datong UniversityDatong037009P.R.China School of Chemistry and Chemical Engineering Shanxi Datong UniversityDatong037009P.R.China Key Laboratory of Advanced Display and System Applications Ministry of EducationSchool of Mechatronic Engineering and AutomationShanghai UniversityShanghai200072P.R.China

Organic memristors with low power consumption,fast write/erasure speed,and complementary metal-oxide-semiconductor(CMOS)compatibility have attracted tremendous attention to mimic biological synapses to realize neuromorphic computation in recent *** this paper,organic resistive switching memory(ORSM)based on(Z)-3-(naphthalen-2-yl)-2-(4-nitrophenyl)acrylonitrile(NNA)and polymer poly(N-vinylcarbazole)(PVK)composite film was prepared by spin-coating *** performance based on NNA:PVK composite films with different mass fractions of NNA were systematically *** ORSM based on PVK:40%(mass fraction)NNA composite film exhibited non-volatile and bipolar memory properties with a switching ratio(Ion/Ioff)of 24.1,endurance of 68 times and retention time of 104 s,a“SET”voltage(Vset)of−0.55 V and a“RESET”voltage(Vreset)of 2.35 *** resistive switching was ascribed to the filling and vacant process of the charge traps induced by NNA and the inherent traps in PVK *** holes trapping and de-trapping process occurred when the device was applied with a negative or positive bias,which caused the transforming of the conductive way of charges,that is the resistive behaviors in the *** study provides a promising platform for the fabrication of ORSM with high performance.

关键词： Organic memristor Resistive switching Polymer/molecule composite film

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Chlorine-substituted chiral 2D perovskite microwires with enhanced lattice rigidity for sensitive circularly polarized light detection

引用

Science China Chemistry 2023年第12期66卷 3602-3610页

作者： Meng Yuan Yuchen Qiu Yingjie Zhao Yuyan Zhao Hui Li Xiao Wei gaosong Chen Jiangang Feng hanfei gao Jinjin Zhao Jiahui Zhao Lei Jiang Yuchen Wu Key Laboratory of Bio-inspired Materials and Interfacial Science Technical Institute of Physics and ChemistryChinese Academy of SciencesBeijing 100190China College of Chemistry Zhengzhou UniversityZhengzhou 450001China College of Chemistry Jilin UniversityChangchun 130012China Key Laboratory for Special Functional Materials of Ministry of Education National and Local Joint Engineering Research Center for High-Efficiency Display and Lighting TechnologyCollaborative Innovation Center of Nano Functional Materials and ApplicationsHenan UniversityKaifeng 475004China University of Chinese Academy of Sciences(UCAS) Beijing 100049China Department of Electrical and Computer Engineering National University of SingaporeSingapore 117585Singapore Suzhou Institute for Advanced Research University of Science and Technology of ChinaSuzhou 215123China Ji Hua Laboratory Foshan 528000China Department of Physics Shanxi Datong UniversityDatong 037009China

Chiral two-dimensional(2D) perovskites offer numerous attractive features for optoelectronics owing to their soft, deformable lattices and a high degree of chemical tunability. While tremendous advances have been made in perovskite-based direct circularly polarized light(CPL) detection, the low circular polarization anisotropy factor and sensitivity of those photodetectors arising from large lattice distortion still limit practical applications. Herein, chiral 2D perovskite-based single-crystalline microwire arrays with enhanced circular dichroism(CD) absorption are fabricated with the synergy of the capillary-bridgeconfined assembly method and chlorine-substituted phenethylamine(Cl-MBA). Compared with phenethylamine(MBA)-inserted perovskites, the smaller lattice distortion and increased halogen–halogen interaction within Cl–MBA-inserted perovskites strengthen lattice rigidity and weaken electron–phonon coupling to improve carrier transport and thermal stability, resulting in high-performance CPL photodetectors with an anisotropy factor of 0.25, responsivity exceeding 95.7±9.3 A W^(-1)and detectivity exceeding(3.05±0.30)×10^(13)Jones. This work opens a new perspective to modulate circular polarization sensitivity and will be helpful to realize promising implementations in quantum computation and communication.

关键词： chiral perovskites microwire arrays lattice rigidity circular polarization photodetectors

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Optical and electrical modulation in ultraviolet photodetectors based on organic one-dimensional photochromic arrays

引用

SmartMat 2021年第3期2卷 388-397页

作者： Yue Geng Yingjie Zhao Jinjin Zhao Yu Zhai Meng Yuan Xue-Dong Wang hanfei gao Jiangang Feng Yuchen Wu Lei Jiang Key Laboratory of Bio-inspired Materials and Interfacial Science Technical Institute of Physics and ChemistryChinese Academy of SciencesBeijingChina University of Chinese Academy of Sciences(UCAS) BeijingChina Institute of Theoretical Chemistry College of ChemistryJilin UniversityChangchunJilinChina Institute of Functional Nano&Soft Materials(FUNSOM) Jiangsu Key Laboratory for Carbon-Based Functional Materials&DevicesSoochow UniversitySuzhouJiangsuChina Ji Hua Laboratory FoshanGuangdongChina Division of Physics and Applied Physics School of Physical and Mathematical SciencesNanyang Technological UniversitySingaporeSingapore

Organic photochromic materials have drawn considerable attention for their potential applications in large-scale and low-cost optoelectronics owing to unique tunable physicochemical *** organic photodetectors,photochromic materials have realized optical and electrical engineering of semiconductor layers,which incorporate not only tunable performance,but also functionalities to optoelectronic ***,the essential challenge is to assemble large-area photochromic micro-and nanostructure arrays with controllable geometry and precise alignment,which restricts the integration of multifunctional optoelectronic ***,we fabricate organic photochromic one-dimensional(1D)arrays via a feasible solution process through the confined crystallization of organic *** modulating and controlling the photoisomerization behaviors,these 1D photochromic arrays possess broad spectral tunability,which ensure tunable ***,we investigate the crystallographic transition and electronic performance variation of these 1D photochromic *** adjusting the dwell time of ultraviolet(UV)irradiation,the UV photochromic photodetectors realize tunable and repeatable responsivity from 85.6 to 0.709 mA/*** work provides new possibilities for optical and electrical engineering of photochromic microwires towards the integration of multifunctional optoelectronic devices.

关键词： crystalline transition organic 1D arrays photochromic molecules ultraviolet photodetectors

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Reversible phase transition for switchable second harmonic generation in 2D perovskite microwires

引用

SmartMat 2022年第4期3卷 657-667页

作者： Yingjie Zhao Jiahui Zhao Yangwu Guo Jinjin Zhao Jiangang Feng Yue Geng Junchuan Yang hanfei gao Meng Yuan Lei Jiang Yuchen Wu Key Laboratory of Bio-Inspired Materials and Interfacial Science Technical Institute of Physics and ChemistryChinese Academy of SciencesBeijingChina School of Future Technology University of Chinese Academy of SciencesBeijingChina Ji Hua Laboratory FoshanChina Department of Chemical and Biomolecular Sciences National University of SingaporeSingaporeSingapore

Highly efficient second-harmonic generation(SHG)has facilitated the development of nanophotonics and sustained promising applications,ranging from electro-optical modulation,frequency conversion,and optical frequency combs to pulse *** controllable SHG switching has been observed in nanophotonics structures and molecule systems,the relatively small SHG switching contrast impedes its application in switchable nonlinear ***,reversible phase transitions between glassy and crystalline states without material degradation are demonstrated based on solution-processed chiral perovskite microwire *** of lattice inversion symmetry and high crystallinity support efficient SHG in microwire *** synergy of high-performance SHG and reversible phase transitions between glassy and crystalline states,reversible switching of SHG is demonstrated under facile *** high SHG switching performances,together with a small footprint,pave the way toward the integration of switchable nonlinear devices based on microwire arrays.

关键词： 2D chiral perovskites assembled microwires nonlinear optics phase transition second harmonic generation

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

纯钼薄板的温变形行为及本构建模

引用

稀有金属材料与工程 2021年第4期50卷 1156-1165页

作者：代鹏高晗菲王宁樊晓光孙明明兰州空间技术物理研究所真空技术与物理重点实验室甘肃兰州730000 西北工业大学凝固技术国家重点实验室陕西西安710072

纯钼薄板在航天领域中有很好的应用前景,而准确表征纯钼板在温热条件下的力学性能是明确钼构件成形性的必要条件。因此,基于在不同温度(20~500℃)和应变速率(5×10^(-4)~1×10^(-2)s^(-1))条件下进行的拉伸试验,对纯钼薄板的流动应力行... 详细信息

纯钼薄板在航天领域中有很好的应用前景,而准确表征纯钼板在温热条件下的力学性能是明确钼构件成形性的必要条件。因此,基于在不同温度(20~500℃)和应变速率(5×10^(-4)~1×10^(-2)s^(-1))条件下进行的拉伸试验,对纯钼薄板的流动应力行为、厚向异性和断裂行为进行了研究。结果表明,纯钼薄板的变形抗力对温度敏感,同时,厚向异性指数r随温度变化较小。应变硬化指数从室温到300℃呈显著增大趋势,之后随着温度升高而趋于稳定。随着温度升高,纯钼薄板的断裂延伸率先升高后略减小。裂纹产生于晶界,随后晶粒沿着晶间裂纹的分离导致断口分层现象的产生。建立了修正的Johnson-Cook纯钼薄板本构模型,模型平均误差低于5%。

关键词：纯钼板变形行为厚向异性断裂本构模型

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Independent integration practice on revamping 4200/3500 mm medium and heavy plate rolling mill of Bayi Steel in terms of process and make-up equipment

引用

Baosteel Technical Research 2010年第S1期4卷 114-页

作者： ZHANG Ye,JIA hanfei and gao Ying Baosteel Engineering &Technology Group Co.,Ltd.,Shanghai 201900,China

This study systematically reviews and summarizes relocation and revamping project of medium and heavy plate rolling mill in Bayi *** detailed analysis was made on the main deficiency and problems of the original production line of Pudong Steel,systematical integration and improvement for the process and equipment were carried out *** innovative practice of integration,Baosteel Engineering has greatly improved the technical process and equipment make-up,as well as the grades and quality of the *** original man-operating line is redesigned into an automatic system controlled by Level 2 computer,reaching the advanced technical level of home-made medium and heavy plate production line in recent *** project is constructed in two phases;The original product mix of Pudong Steel is maintained as much as possible in Phase *** 3 500 mm single stand finishing mill is put into operation, capacity of hot- rolling medium and heavy plate reaches 650 000 t/a,with the maximum thickness at 40 *** or facilities are reserved for production of pipeline steel and other *** steel, vessel plate,wind power plate and other TMCP and heat treatment products are projected in PhaseⅡ.After 4 200 mm roughing mill and its matched facilities are put into operation,capacity of hot-rolling medium and heavy plate will reach 120 000 t/a,with the maximum thickness at 80 *** the optimization of process equipment and its function,the relocated medium and heavy plate mill production line has reached advanced level among similar domestic *** prominent achievements of the project are the revamping of thickness control system of the finishing mill and the newly installed shape control *** control of the whole line is realized.

关键词： process line equipment self-integration improvement

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

一种复杂地理环境越野通行路径寻优算法

引用

测绘科学技术学报 2017年第5期34卷 525-528,534页

作者：赵成张涵斐高毅吴超辉黄征信息工程大学 61363部队乌鲁木齐民族干部学院 68029部队博士后工作站 68206部队

设计了基于障碍距离的优化算法,解决突发事件应急联动中复杂地理环境下最短路径的寻优求解问题。在详细分析地理空间高程、坡度、障碍物等空间信息的基础上,通过计算搜索空间、搜索方向和网络弧段权值构建网络拓扑关系网,并利用遗传算... 详细信息

设计了基于障碍距离的优化算法,解决突发事件应急联动中复杂地理环境下最短路径的寻优求解问题。在详细分析地理空间高程、坡度、障碍物等空间信息的基础上,通过计算搜索空间、搜索方向和网络弧段权值构建网络拓扑关系网,并利用遗传算法对最优路径进行寻优求解。

关键词：地理环境障碍距离最优线路遗传算法搜索空间

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

冠状动脉CT及颈动脉超声在2型糖尿病合并冠心病风险预测中的价值

引用

武汉大学学报（医学版） 2019年第6期40卷 942-946页

作者：陈杰廖美焱高建张寒菲蔡伟国武汉大学中南医院核医学科湖北武汉430071 武汉大学中南医院医学影像科湖北武汉430071 中国人民解放军中部战区总医院影像科湖北武汉430070

目的:比较临床风险评估系统(UKPDS、FRS)、钙化积分(CACS)、冠脉CT血管成像(GCS)及颈动脉超声对2型糖尿病(T2DM)合并冠心病(CAD)风险预测的价值。方法:收集本院T2DM病例资料进行回顾性分析,将病例按照性别进行分组,对UKPDS、FRS、CACS、... 详细信息

目的:比较临床风险评估系统(UKPDS、FRS)、钙化积分(CACS)、冠脉CT血管成像(GCS)及颈动脉超声对2型糖尿病(T2DM)合并冠心病(CAD)风险预测的价值。方法:收集本院T2DM病例资料进行回顾性分析,将病例按照性别进行分组,对UKPDS、FRS、CACS、GCS、风险等级积分(LS)进行多因素Logistic回归分析,并计算各个危险因素对T2DM合并CHD诊断的敏感性、特异性及准确率。结果:男性组103例,女性组60例,其中64例为T2DM合并CAD。男性组T2DM合并CAD的独立危险因素包括CACS(OR=1.012)、GCS(OR=1.632)、LS(OR=1.447);女性组T2DM合并CAD的独立危险因素UKPDS(OR=1.088)、CACS(OR=1.008)及GCS(OR=1.651)。CACS、GCS与LS对男性组T2DM合并CAD具有诊断价值(AUC=0.789,0.975,0.671);UKPDS、CACS、GCS对女性组DM合并CAD具有诊断价值(AUC=0.673,0.847,0.984)。结论:在对T2DM合并CAD的诊断价值中,GCS价值最高,UKPDS、FRS、LS及CACS在不同性别间存在差异。

关键词： 2型糖尿病冠脉CT血管成像颈动脉超声危险因素诊断价值

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

沉水植物数值模拟研究进展及展望

引用

环境科学与技术 2018年第8期41卷 59-65页

作者：高海龙程寒飞詹茂华王冰玉中冶华天工程技术有限公司水环境技术研究院江苏南京210019 .南京理工大学环境与生物工程学院江苏省化工污染控制与资源化重点实验室江苏南京210094

在富营养化水体中恢复水生植物,尤其是沉水植物,被认为是富营养化治理的有效途径之一。最近几十年,国内外学者和专家在富营养化水体进行了大量的有关沉水植物恢复的研究与实践工作。数值模型因其耗时少,不受试验条件限制的优点被越来越... 详细信息

在富营养化水体中恢复水生植物,尤其是沉水植物,被认为是富营养化治理的有效途径之一。最近几十年,国内外学者和专家在富营养化水体进行了大量的有关沉水植物恢复的研究与实践工作。数值模型因其耗时少,不受试验条件限制的优点被越来越多的用于富营养化水体沉水植物恢复的研究中。文章在总结和梳理沉水植物数值模拟研究进展的基础上,对沉水植物的数值模拟研究提出了展望,以期使沉水植物数值模型能更好地为富营养化水体沉水植物恢复工程的实施提供相应的技术指导。

关键词：沉水植物数值模拟生态修复

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

太湖水生植物研究进展

引用

湿地科学 2019年第1期17卷 9-15页

作者：高海龙程寒飞詹茂华王冰玉江苏省生态环境评估中心江苏南京210036 中冶华天工程技术有限公司水环境技术研究院江苏南京210019 南京理工大学环境与生物工程学院化工污染控制与资源化江苏省高校重点实验室江苏南京210094

自20世纪60年代以来,由于生境变化和人类活动干扰,太湖水生植物种类逐渐减少,已有伊乐藻(Elodeanuttallii)、水盾草(Cabomba caroliniana)和篦齿眼子菜(Potamogeton pectinatus)3种外来迁入物种出现;1960～2014年期间,太湖水生植物总生... 详细信息

自20世纪60年代以来,由于生境变化和人类活动干扰,太湖水生植物种类逐渐减少,已有伊乐藻(Elodeanuttallii)、水盾草(Cabomba caroliniana)和篦齿眼子菜(Potamogeton pectinatus)3种外来迁入物种出现;1960～2014年期间,太湖水生植物总生物量呈现单峰型变化,挺水植物生物量占水生植物总生物量的比例也同样呈现单峰型变化,而其它水生植物生物量占水生植物总生物量的比例则在持续增大;太湖水生植物群落的优势种也发生了变化,沉水植物群落的优势种由马来眼子菜(Potamogeton malaianus)和苦草(Vallisneria natans)变为仅为马来眼子菜。目前,对于太湖水生植物的研究,主要集中在水生植物的分布调查、光合特征、对富营养化水体的净化和重建水生植物群落、水生植物管理等方面,在太湖北部"藻型湖区"和太湖东北"草—藻过渡湖区"重建稳定且多样的水生植物群落,已经成为太湖水生植物研究的热点和难点。

关键词：太湖水生植物群落演替富营养化生态修复

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

欢迎您,

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案：

请选择收藏分类：

通借通还

欢迎您,

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：