检索结果-南通市图书馆

Fabrication and field emission performance of arrays of vacuum microdiodes containing CuO nanowire emitters grown directly on glass without a catalyst

在线全文

学校读者我要写书评

暂无评论

Chinese Science Bulletin 2011年第9期56卷 906-911页

作者： SHAO PengRui DENG ShaoZhi CHEN Jun xu ningsheng State Key Laboratory of Optoelectronic Materials and Technologies Guangdong Province Key Laboratory of Display Materials and TechnologySchool of Physics and Engineering Sun Yat-sen University Guangzhou 510275 China

真空 microelectronic 来源的数组用含铜的氧化物(CuO ) 在玻璃底层上被制作 nanowire emitters。电子来源的数组拥有 microdiode 结构，它能有效地导致域排放并且在三极管类型设备操作控制射出的电子的交货到阳极。为没有使用催化剂并... 详细信息

真空 microelectronic 来源的数组用含铜的氧化物(CuO ) 在玻璃底层上被制作 nanowire emitters。电子来源的数组拥有 microdiode 结构，它能有效地导致域排放并且在三极管类型设备操作控制射出的电子的交货到阳极。为没有使用催化剂并且在象 400 潩?敦摥慢正瀠牡浡瑥牥甠楳杮琠敨猠瑡汥楬整猭湥敳?潎浲污穩摥?晩敦敲据?敖敧慴楴湯?摮硥?一样低的温度，精确在一个数组在 microcavities 的中心种 CuO nanowires 的一种技术???湡?扯敳癲摥琠浥数慲畴敲?潦?桴?数楲摯ㄠ?有????污?敳獡湯?瘠来瑥瑡潩?硥牥獴愠洠'?瑳潲杮牥映牯楣杮漠??慭?桴湡漠??業?愠摮琠畨?慨???獢慴瑮慩?晥敦瑣漠?桴?楤牵慮?整灭牥瑡牵?慲杮??剔?癯牥?楨慮?楓湧晩捩湡?潰楳楴敶映敥'N捡獫漠??慭?湡?桴?呄?耶喌嚊?牡慥?景?楨慮眠瑩?桴?

关键词：真空微电子器件场发射性能纳米线氧化铜催化剂阵列排放玻璃

Room-temperature strong coupling between dipolar plasmon resonance in single gold nanorod and two-dimensional excitons in monolayer WSe_2

在线全文

学校读者我要写书评

暂无评论

Chinese Physics B 2018年第9期27卷 144-150页

作者： Jinxiu Wen Hao Wang Huanjun Chen Shaozhi Deng ningsheng xu State Key Laboratory of Optoelectronic Materials and Technologies Guangdong Province Key Laboratory of Display Material and TechnologySun Yat-sen UniversityGuangzhou 510275China School of Electronics and Information Technology Sun Yat-sen UniversityGuangzhou 510006China School of Physics Sun Yat-sen UniversityGuangzhou 510275China School of Applied Physics and Materials Wuyi UniversityJiangmen 529020China

All-solid-state strong coupling systems with large vacuum Rabi splitting energy have great potential applications in future quantum information technologies, such as quantum manipulations, quantum information storage and processing,and ultrafast optical switches. Monolayer transition metal dichalcogenides（TMDs） have recently been explored as excellent candidates for the observation of solid-state strong coupling phenomena. In this work, from both experimental and theoretical aspects, we explored the strong coupling effect by integrating an individual plasmonic gold nanorod into the monolayer tungsten diselenide（WSe2）. Evident anti-crossing behavior was observed from the coupled energy diagram at room temperature; a Rabi splitting energy of 98 meV was extracted.

关键词： Au nanorod-WSe2 heterostructures strong coupling all-solid-state system room temperature

Imitating and exploring the human brain's resting and task-performing states via brain computing: scaling and architecture

在线全文

学校读者我要写书评

暂无评论

National Science Review 2024年第5期11卷 17-28页

作者： Wenlian Lu Longbin Zeng Jiexiang Wang Shitong Xiang Yang Qi Qibao Zheng ningsheng xu Jianfeng Feng DTB Consortium Institute of Science and Technology for Brain-Inspired Intelligence Fudan University Key Laboratory of Computational Neuroscience and Brain-Inspired Intelligence(Fudan University) Ministry of Education Fudan University Shanghai Center for Mathematical Sciences Fudan University Department of Computer Science University of Warwick Zhangjiang Fudan International Innovation Center Fudan University

A computational human brain model with the voxel-wise assimilation method was established based on individual structural and functional imaging data. We found that the more similar the brain model is to the biological counterpart in both scale and architecture, the more similarity was found between the assimilated model and the biological brain both in resting states and during tasks by quantitative metrics. The hypothesis that resting state activity reflects internal body states was validated by the interoceptive circuit's capability to enhance the similarity between the simulation model and the biological brain. We identified that the removal of connections from the primary visual cortex(V1) to downstream visual pathways significantly decreased the similarity at the hippocampus between the model and its biological counterpart,despite a slight influence on the whole brain. In conclusion, the model and methodology present a solid quantitative framework for a digital twin brain for discovering the relationship between brain architecture and functions, and for digitally trying and testing diverse cognitive, medical and lesioning approaches that would otherwise be unfeasible in real subjects.

关键词： digital twin brain computational cortico-subcortical model fMRI data assimilation interoceptive circuit

Microstructure and properties of Si-TaSi_2 eutectic in situ composite for field emission

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

Chinese Science Bulletin 2007年第7期52卷 984-989页

作者： CUI ChunJuan ZHANG Jun HAN Min CHEN Jun xu ningsheng LIU Lin FU HengZhi State Key Laboratory of Solidification Processing Northwestern Polytechnical University Xi'an 710072 China State Key Laboratory of Optoelectronic Materials and Technology Zhongshan University Guangzhou 510275 China

The Si-TaSi2 eutectic in situ composite for field emission is prepared by electron beam floating zone melting (EBFZM) technique on the basis of Czochralski (CZ) crystal growth technique. The directional solidification microstructure and the field emission properties of the Si-TaSi2 eutectic in situ composite prepared by two kinds of crystal growth techniques have been systematically tested and compared. Researches demonstrated that the solidification microstructure of EBFZM can be fined obviously be-cause of the relatively high solidification rate and very high temperature gradient, i.e. both the diameter and inter-rod spacing of the TaSi2 fibers prepared by EBFZM technique were decreased, and the density and the volume fraction of the TaSi2 fibers prepared by EBFZM technique were increased in comparison with that of the TaSi2 fibers prepared by CZ method. Therefore the field emission property of the Si-TaSi2 eutectic in situ composite prepared by EBFZM can be improved greatly, which exhibits better field emission uniformity and straighter F-N curve.

关键词：硅化钽 Si-TaSi2共晶原位复合材料场发射显示屏显微结构性质

Low-temperature Synthesis of Large-area Films of Molybdenum Trioxide Microbelts in Air and the Dependence of Their Field Emission Performance on Growth Conditions

在线全文

学校读者我要写书评

暂无评论

Journal of Materials Science & Technology 2010年第7期26卷 584-588页

作者： Dongmei Ban,ningsheng xu,Shaozhi Deng,Jun Chen and Juncong She State Key Lab of Optoelectronic Materials and Technologies,Guangdong Province Key Laboratory of Display Material and Technology,School of Physics and Engineering,Sun Yat-sen University,Guangzhou 510275,China [a] State Key Lab of Optoelectronic Materials and Technologies Guangdong Province Key Laboratory of Display Material and Technology School of Physics and Engineering Sun Yat-sen University Guangzhou 510275 China

A simple method is introduced for the preparation of large-area films of molybdenum trioxide （MoO3） microbelts. It is found that such films can be grown on indium tin oxide （ITO） glasses or silicon substrates at low temperatures by thermal evaporation deposition in air without using catalyst. Field emission measurements show that the turn-on field of the MoO3 microbelts is as low as 2.2 V/μm required to obtain a current density of 10 μA/cm^2, The combination of the simplicity of the growth method and the attractive field emission performance makes it a potential low-cost technique for the preparation of large-area field emission cold cathode material.

关键词： Field emission Large-area film Molybdenum trioxide Microstructures and synthesis

Graphene Decorated with Noble Metal Nanorods and Its Surface-Enhanced Raman Scattering Activity

在线全文

学校读者我要写书评

暂无评论

Graphene Decorated with Noble Metal Nanorods and Its Surface...

Research of Boron-based Nanostructures

中国真空学会2014学术年会

作者： Lei Zhang Huanjun Chen Shaozhi Deng ningsheng xu State Key Lab of Optoelectronic Materials and Technologies Guangdong Province Key Lab of Display Material and TechnologySchool of Physics and EngineeringSun Yat-sen University

Surface-enhanced Raman scattering(SERS)is an important spectroscopic technique for the struc-tural analysis of low-concentration *** this work,we fabricate a composite substrate that is applied for SERS *** combines single layer graphene(SLG)with gold nanorods synthesized by seeded growth *** the composite substrate,gold nanorods covered by single layer graphene provide substantive hot spots for the SRES detection of molecules to be analyzed and graphene can also improve Raman scattering signal when taking the chemical mechanism into *** experiment results are shown in Figure 1.

关键词： surface-enhanced Raman scattering gold nanorod graphene plasmon

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

Research of Boron-based Nanostructures

一种基于DSP与FPGA实现场发射平板显示器视频信号处理系统的方案

第二届海峡两岸功能材料科技与产业峰会（2015）

作者： Fei Liu Haibo Gan xun Yang Luxi Peng Jun Chen Shaozhi Deng ningsheng xu Sun Yat-sen University

Boron-based nanomaterials have attracted more and more attention due their fascinating properties,such as high conductivity,low density,high melting point and large Young’s *** our knowledge,much effort has been devoted to find the growth method of boron-based nanomaterials in the last decade,but few researchers focused on the modulation of their physical properties,which has kept their rapid development from the optoelectronic applications.

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

中山大学学报（自然科学版） 2010年第2期49卷 8-12页

作者：陈振华邓少芝许宁生中山大学光电材料与技术国家重点实验室//显示材料与技术广东省重点实验室//物理科学与工程技术学院广东广州510275 中山火炬职业技术学院电子工程系广东中山528436

数字视频信号处理涉及对高速实时视频信号的传输和处理,要求相关电路系统具有强大的数据处理能力。介绍一种以DSP和FPGA器件为核心构建的场发射平板显示器视频信号处理系统方案,并以TI公司的DSP芯片TMS320C6713和Xilinx公司的FPGA芯片XC... 详细信息

数字视频信号处理涉及对高速实时视频信号的传输和处理,要求相关电路系统具有强大的数据处理能力。介绍一种以DSP和FPGA器件为核心构建的场发射平板显示器视频信号处理系统方案,并以TI公司的DSP芯片TMS320C6713和Xilinx公司的FPGA芯片XC3S200-PQ208来实现系统方案,在自主研制的4.5 inch(11.43 cm)160×120分辨率单色场发射平板显示样屏上得到了功能验证。所设计的视频信号处理电路方案把两种处理器的性能优势结合起来,具有微处理器嵌入式系统的优点,同时可实现并行算法结构,满足视频信号传输和处理的高速实时性要求。

关键词：场发射平板显示器(FED) 视频信号处理 DSP(数字信号处理器) FPGA(现场可编程门阵列)

在线全文

学校读者我要写书评

暂无评论

飞秒激光的波长对SiC材料烧蚀的影响

光学学报 2006年第3期26卷 467-470页

作者：陈洪新贾天卿黄敏赵福利许宁生徐至展中山大学光电材料与技术国家重点实验室广州510275 中国科学院上海光学精密机械研究所强场激光物理国家重点实验室上海201800

利用10倍的显微物镜将近红外飞秒激光脉冲汇聚到宽带隙半导体材料6H SiC的前表面,研究样品的烧蚀及诱导微细结构。用扫描电镜(Scanning electron microscope,SEM)及光学显微镜测量烧蚀斑。利用烧蚀面积与激光脉冲能量的关系确定SiC的烧... 详细信息

利用10倍的显微物镜将近红外飞秒激光脉冲汇聚到宽带隙半导体材料6H SiC的前表面,研究样品的烧蚀及诱导微细结构。用扫描电镜(Scanning electron microscope,SEM)及光学显微镜测量烧蚀斑。利用烧蚀面积与激光脉冲能量的关系确定SiC的烧蚀阈值。给出了SiC样品的烧蚀阈值与飞秒激光波长的依赖关系。实验结果表明,可见光区随波长增加,烧蚀阈值从0.29J/cm2增加到0.67J/cm2;而在近红外区,SiC的烧蚀阈值为0.70J/cm2左右,基本上不随激光波长变化而改变。结合计算结果,可以认为在飞秒激光烧蚀SiC的过程中,在近红外区,光致电离和碰撞电离均起到了重要的作用;而在可见光区,光致电离的作用相对大一些。

关键词：超快光学烧蚀阈值微加工飞秒激光光致电离碰撞电离