检索结果-南通市图书馆

Versatile band structure and electron-phonon coupling in layered PtSe_(2) with strong interlayer interaction

Nano Research 2022年第7期15卷 6613-6619页

作者： Junbo He Xudan Zhu Weiming Liu ertao hu Jianlu Wang Rongjun Zhang Department of Optical Science and Engineering Fudan UniversityShanghai 200433China College of Electronic and Optical Engineering Nanjing University of Posts and TelecommunicationsNanjing 210023China Institute of Optoelectronics Fudan UniversityShanghai 200433China Academy for Engineering and Technology Fudan UniversityShanghai 200433China Yiwu Research Institute of Fudan University Yiwu 322000China

The large tunability in the band structure is ubiquitous in two-dimensional(2D)materials,and PtSe_(2) is not an exception,which has attracted considerable attention in electronic and optoelectronic applications due to its high carrier mobility and long-term *** dimensional dependent properties are closely related to the evolution of electronic band *** points(CPs),the extrema or saddle points of electronic bands,are the cornerstone of condensed-matter physics and fundamentally determine the optical and transport phenomena of the layered PtSe_(2).Here,we have experimentally revealed the detailed electronic structures in layered PtSe_(2),including the CPs in the Brillouin zones(BZs),by means of reflection contrast spectroscopy and spectroscopic ellipsometry(SE).There are three critical points in the BZs attributed to the excitonic transition,quasi-particle band gap,and the band nesting effect related transition,*** CPs show red-shifting trends with increasing layer number under the mechanism of strong interlayer *** have further revealed the electron–phonon(e–ph)interaction in such layered material,utilizing temperature-dependent absorbance *** strength of e–ph interaction and the average phonon energy also decline with the increasement of layer *** findings give a deep understanding to the physics of the layer-dependent evolution of the electronic structure of PtSe_(2),potentially leading to applications in optoelectronics and electronic devices.

关键词： layered transition metal dichalcogenides PtSe_(2)thin films interlayer coupling critical points electron-phonon interaction

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

金属/介质多层膜基太阳能光热转换薄膜结构的设计与优化

引用

光学学报 2020年第14期40卷 188-194页

作者：吴莹胡二涛王静韦玮南京邮电大学电子与光学工程学院微电子学院江苏南京210023 南京邮电大学通达学院基础教学部江苏扬州225127

理论设计对于高性能太阳能光热转换薄膜的实验制备极为重要。然而,大多数软件通常局限于正入射情况下的太阳光吸收率的优化,而无法直接对太阳能光热转换效率这一重要指标进行优化。鉴于以上问题,使用传输矩阵方法与遗传优化算法,通过改... 详细信息

理论设计对于高性能太阳能光热转换薄膜的实验制备极为重要。然而,大多数软件通常局限于正入射情况下的太阳光吸收率的优化,而无法直接对太阳能光热转换效率这一重要指标进行优化。鉴于以上问题,使用传输矩阵方法与遗传优化算法,通过改变金属/介质多层膜基太阳能光热转换薄膜中各层薄膜的厚度,直接对其光热转换效率进行优化设计。重点研究了薄膜层数、太阳光照度与工作环境温度对钨/氧化铝基(W/Al2O3)多层膜的影响。研究结果表明,在聚光比为1和100情况下,该膜系的最优膜层数分别为6与8。该研究结果对于高性能太阳能光热转换薄膜的实验制备具有重要的指导意义。

关键词：薄膜金属/介质多层薄膜传输矩阵方法遗传算法太阳能光热转换太阳光聚光比

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

W/SiO2基太阳光谱选择性吸收薄膜的制备和表征

引用

光学学报 2019年第5期39卷 407-412页

作者：郭帅吴莹古同胡二涛南京邮电大学电子与光学工程学院微电子学院

采用磁控溅射镀膜仪制备了基于过渡金属W和介质SiO2的6层薄膜样品,膜系结构为Cu (>100.0nm)/SiO2(63.5nm)/W(11.0nm)/SiO2(60.0nm)/W(5.4nm)/SiO2(75.5nm)。在250~2500nm的波长范围内,该样品的太阳光吸收率为95.3%,且在400℃低真空(6Pa)条件下退火72h之后,样品的反射光谱特性变化较小,证明了该样品具有极高的热稳定性。使用红外热成像仪对样品的红外辐射特性进行了在位实时表征,结果表明样品具有低辐射特性。这些优良的特性有利于该样品在太阳能光热转换中的应用。

关键词：薄膜太阳光谱选择性吸收磁控溅射热辐射热成像仪

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

Fabrication and investigation of ferroelectric memristors with various synaptic plasticities

引用

Chinese Physics B 2022年第7期31卷 637-642页

作者： Qi Qin Miaocheng Zhang Suhao Yao Xingyu Chen Aoze Han Ziyang Chen Chenxi Ma Min Wang Xintong Chen Yu Wang Qiangqiang Zhang Xiaoyan Liu ertao hu Lei Wang Yi Tong College of Electronic and Optical Engineering and College of Microelectronics Nanjing University of Posts and TelecommunicationsNanjing 210023China Key Laboratory for Organic Electronics and Information Displays and Jiangsu Key Laboratory for Biosensors Nanjing University of Posts and TelecommunicationsNanjing 210023China

In the post-Moore era,neuromorphic computing has been mainly focused on breaking the von Neumann *** have been proposed as a key part of neuromorphic computing architectures,and can be used to emulate the synaptic plasticities of the human *** memristors represent a breakthrough for memristive devices on account of their reliable nonvolatile storage,low write/read latency and tunable conductive ***,among the reported ferroelectric memristors,the mechanisms of resistive switching are still under *** addition,there needs to be more research on emulation of the brain synapses using ferroelectric ***,Cu/PbZr_(0.52)Ti_(0.48)O_(3)(PZT)/Pt ferroelectric memristors have been *** devices are able to realize the transformation from threshold switching behavior to resistive switching *** synaptic plasticities,including excitatory post-synaptic current,paired-pulse facilitation,paired-pulse depression and spike time-dependent plasticity,have been mimicked by the PZT ***,the mechanisms of PZT devices have been investigated by first-principles calculations based on the interface barrier and conductive filament *** work may contribute to the application of ferroelectric memristors in neuromorphic computing systems.

关键词： brain-inspired computing ferroelectric memristors mechanisms resistive-switching

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

可见光谱区线性渐变滤光片的制备、表征及退火

引用

激光与光电子学进展 2022年第23期59卷 248-254页

作者：倪康胡二涛王敏王静李安康林一波韦玮南京邮电大学电子与光学工程学院江苏南京210023 南京邮电大学通达学院基础教学部江苏扬州225127

结合多靶磁控溅射镀膜方法和自制的一维位移挡板样品台制备了基于TiO_(2)和SiO_(2)的可见光谱区线性渐变滤光片(LVOF)。使用商用分光光度计和一维手动平移样品台对样品进行光谱表征。重点研究了退火温度和时间对LVOF透射光谱的影响。结... 详细信息

结合多靶磁控溅射镀膜方法和自制的一维位移挡板样品台制备了基于TiO_(2)和SiO_(2)的可见光谱区线性渐变滤光片(LVOF)。使用商用分光光度计和一维手动平移样品台对样品进行光谱表征。重点研究了退火温度和时间对LVOF透射光谱的影响。结果表明,LVOF样品的可工作光谱范围为510~700 nm,且样品上不同位置的透射光谱峰值与样品位置呈现出良好的线性关系。在300℃下进行1 h真空退火处理后,样品的透射率得到了显著提升,优于60%。这表明退火处理可显著提升LVOF的性能。

关键词：光学器件线性渐变滤光片磁控溅射透射率退火

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

祛浊化瘀方治疗痛风性关节炎的作用及机制研究

引用

中华中医药学刊 2024年第7期42卷 125-129,I0013-I0021页

作者：李志岭胡莎莎谢静静贾二涛张剑勇广州中医药大学第四临床医学院广东深圳518000 深圳市中医院广东深圳518000

目的探索祛浊化瘀方治疗痛风性关节炎作用及机制。方法通过TCMSP、GeneCards、DisGeNET、MalaCards、DAVID6.7等数据库,筛选出祛浊化瘀方的核心成分及核心靶点。通过GEO数据库获得痛风性关节炎模型小鼠基因数据,筛选样本之间的差异表达... 详细信息

目的探索祛浊化瘀方治疗痛风性关节炎作用及机制。方法通过TCMSP、GeneCards、DisGeNET、MalaCards、DAVID6.7等数据库,筛选出祛浊化瘀方的核心成分及核心靶点。通过GEO数据库获得痛风性关节炎模型小鼠基因数据,筛选样本之间的差异表达基因,GO分析以及KEGG信号通路富集分析共同的差异基因。分析痛风性关节炎组与正常组当中免疫细胞浸润情况,比较差异相关性。与网络药理学信号通路结果进行对比验证,综合得到的结果以确定作用靶点,并通过动物实验验证。结果网络药理学发现白细胞介素-1β(IL-1β)、白细胞介素-6(IL-6)、肿瘤坏死因子-α(TNF-α)是与痛风性关节炎相关密切的核心靶点。基于GEO数据库的差异表达基因分析,白细胞迁移、趋化,产生细胞因子、中性粒细胞迁移在内的多个生物过程,经由NF-κB路径的TNF-α信号通路等多个炎症信号通路参与痛风性关节炎,与网络药理学所得结果基本一致。通过免疫细胞浸润分析发现固有免疫细胞如中性粒细胞、巨噬细胞是主要的参与痛风性关节炎炎症反应的免疫细胞类型。动物实验结果显示:祛浊化瘀方能够降低痛风性关节炎模型组织局部IL-1β、TNF-α、IL-6表达,减少中性粒细胞胞外诱捕网的形成。结论祛浊化瘀方可能通过多成分、多靶点和多通路抑制炎症反应防治痛风性关节炎。

关键词：祛浊化瘀方网络药理学痛风性关节炎炎症反应

来源：

维普期刊数据库

同方期刊数据库博看期刊评论

在线全文

学校读者我要写书评

暂无评论

Precise Orbit and Clock Offset Determination of LEO Navigation Satellites Based on Multi-constellation and Multi-frequency Spaceborne GNSS Data

Precise Orbit and Clock Offset Determination of LEO Navigati...

引用

第十四届中国卫星导航年会

作者： Junjun Yuan ertao Liang Liqian Zhao Kai Li Chengpan Tang Shanshi Zhou Xiaogong hu Shanghai Astronomical Observatory Chinese Academy of Sciences Space Star Technology Co. Ltd. Shanghai Key Laboratory of Space Navigation and Positioning Techniques Shanghai Astronomical Observatory Chinese Academy of Sciences

With massive low earth orbit(LEO) satellites, LEO navigation enhancement system is important to improve the service performance of GNSS system. The high precision orbit and clock offset calculation of LEO satellites is one key to establish the stable and reliable space-time reference. Based on GPS/BDS/GALILEO data measured by LEO navigation satellites, this paper determines the precise LEO orbit and clock offset, and evaluates the precision of LEO orbit and clock offset solution. The orbit determination accuracy using GPS(L1/L2), GPS(L1/L5), BDS(B1C/B2a), and GALILEO(E1/E5a)combination is 2.42, 2.93, 2.67, and 2.87 cm, respectively. The clock offset solution accuracy using the above four combination is 0.167, 0.194, 0.186, and0.180 ns, respectively. These results can provide high-quality product for navigation enhancement system services.

关键词：

来源： cnki会议评论

在线全文

cnki会议

学校读者我要写书评

暂无评论

Low phosphorus promotes NSP1–NSP2 heterodimerization to enhance strigolactone biosynthesis and regulate shoot and root architecture in rice

引用

Molecular Plant 2023年第11期16卷 1811-1831页

作者： Kun Yuan Hao Zhang Chaoji Yu Nan Luo Jijun Yan Shuang Zheng Qingliang hu Dahan Zhang Liquan Kou Xiangbing Meng Yanhui Jing Mingjiang Chen Xinwei Ban Zongyun Yan Zefu Lu Jian Wu Yu Zhao Yan Liang Yonghong Wang Guosheng Xiong Jinfang Chu ertao Wang Jiayang Li Bing Wang State Key Laboratory of Plant Genomics and National Center for Plant Gene Research(Beijing) Institute of Genetics and Developmental BiologyInnovation Academy for Seed DesignChinese Academy of SciencesBeijing 100101China University of Chinese Academy of Sciences Beijing 100049China National Key Laboratory of Plant Molecular Genetics CAS Center for Excellence in Molecular Plant SciencesInstitute of Plant Physiology and EcologySIBSChinese Academy of SciencesShanghai 200032China State Key Laboratory of Crop Gene Resources and Breeding Institute of Crop SciencesChinese Academy of Agricultural SciencesBeijing 100081China Guangdong Laboratory for Lingnan Modern Agriculture State Key Laboratory for Conservation and Utilization of Subtropical Agro-BioresourcesCollege of AgricultureSouth China Agricultural UniversityGuangzhou 510642China National Key Laboratory of Crop Genetic Improvement Hubei Hongshan LaboratoryHuazhong Agricultural UniversityWuhan 430070China College of Life Sciences Shandong Agriculture UniversityTai’anShandong 271018China Academy for Advanced Interdisciplinary Studies Nanjing Agricultural UniversityNanjing 210095China Yazhouwan National Laboratory SanyaHainan 572024China

Phosphorus is an essential macronutrient for plant development and metabolism,and plants have evolved ingenious mechanisms to overcome phosphate(Pi)***,the molecular mechanisms underlying the regulation of shoot and root architecture by low phosphorus conditions and the coordinated utilization of Pi and nitrogen remain largely ***,we show that Nodulation Signaling Pathway 1(NSP1)and NSP2 regulate rice tiller number by promoting the biosynthesis of strigolactones(SLs),a class of phytohormones with fundamental effects on plant architecture and environmental *** found that NSP1 and NSP2 are induced by Oryza sativa PHOSPHATE STARVATION RESPONSE2(OsPHR2)in response to low-Pi stress and form a complex to directly bind the promoters of SL biosynthesis genes,thus markedly increasing SL biosynthesis in ***,the NSP1/2–SL signaling module represses the expression of CROWN ROOTLESS 1(CRL1),a newly identified early SL-responsive gene in roots,to restrain lateral root density under Pi *** also demonstrated that GR24^(4DO) treatment under normal conditions inhibits the expression of OsNRTs and OsAMTs to suppress nitrogen absorption but enhances the expression of OsPTs to promote Pi absorption,thus facilitating the balance between nitrogen and phosphorus uptake in ***,we found that NSP1p:NSP1 and NSP2p:NSP2 transgenic plants show improved agronomic traits and grain yield under low-and medium-phosphorus *** together,these results revealed a novel regulatory mechanism of SL biosynthesis and signaling in response to Pi starvation,providing genetic resources for improving plant architecture and nutrient-use efficiency in low-Pi environments.

关键词： rice Pi deficiency strigolactone NSP1 and NSP2 CRL1 nitrogen and Pi absorption

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

Investigation of Proton Resonant Properties in laNe via 17F＋p and Its Astrophysical Implications for 14O（α,p）17F Stellar Reaction

引用

近代物理研究所和兰州重离子加速器实验室年报：英文版 2009年第1期 62-63页

作者： hu Jun He Jianjun Xu Shiwei Chen Zhiqiang Zhang Xueying Wang Jiansong Yu Xiangqing Li Long Zhang Liyong Yang Yanyun Ma Peng Wang Hongwei Tian Wendong Yuan Xiaohua Lu Wan Zhang Xueheng SuJun Li ertao hu Zhengguo Guo Zhongya n Xu Xing Lei Xiangguo Yu Yuhong Tang Shuwen Ye Ruiping Chen Jinda Jin Shilun Du Chengming Wang Shitao Ma Junbing Liu Longxiang Bai Zhen Sun Zhiyu Li Xiangqing Zhang Yuhu Zhou Xiaohong Xu hushan Shanghai Institute of Applied Physics （SINAP） CAS Shanghai 201800 China. China Institute of Atomic Energy （CIAE） P.O. Box 275（46） Beijing 102413 China. School of Physics Peking University Beijing 100871 China.

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

2 - 30 Progress in Analyzing RIBLL1 17F＋p Experimental Data

引用

IMP & HIRFL Annual Report 2010年第1期 71-72页

作者： He Jianjun hu Jun Xu Shiwei Chen Zhiqiang Zhang Xueying Wang Jiansong Yu Xiangqing Li Long Zhang Liyong Yang Yanyun Ma Peng Wang Hongwei Tian Wendong Zhang Xueheng Su Jun Li ertao hu Zhengguo Guo Zhongyan Xu Xing Yuan Xiaohua Lu Wan Lei Xiangguo Yu Yuhong Tang Shuwen Ye Ruiping Chen Jinda Jin Shilun Du Chengming Wang Shitao Ma Junbing Liu Longxiang Bai Zhen Sun Zhiyu Li Xiangqing Zhang Yuhu Zhou Xiaohong Xu hushan Graduate School of Chinese Academy of Sciences Beijing China Shanghai Institute of Applied Physics （SINAP） CAS Shanghai China China Institute of Atomic Energy （CIAE） Beijing China School of Physics Peking University Beijing China

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

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：