检索结果-南通市图书馆

Ultrafast dynamics of femtosecond laser-induced high spatial frequency periodic structures on silicon surfaces

Opto-Electronic Science 2024年第3期3卷 33-46页

作者： Ruozhong Han Yuchan Zhang qilin jiang Long Chen Kaiqiang Cao Shian Zhang Donghai Feng Zhenrong Sun Tianqing Jia State Key Laboratory of Precision Spectroscopy School of Physics and Electronic ScienceEast China Normal UniversityShanghai 200241China Institute of Laser Manufacturing Henan Academy of SciencesZhengzhou 450046China Institute of Physics Chinese Acadamy of SciencesBeijing 100190China Collaborative Innovation Center of Extreme Optics Shanxi UniversityTaiyuan 030006China

Femtosecond laser-induced periodic surface structures(LIPSS)have been extensively studied over the past few *** particular,the period and groove width of high-spatial-frequency LIPSS(HSFL)is much smaller than the diffraction limit,making it a useful method for efficient ***,compared with the low-spatial-frequency LIPSS(LSFL),the structure size of the HSFL is smaller,and it is more easily ***,the formation mechanism of HSFL is complex and has always been a research hotspot in this *** this study,regular LSFL with a period of 760 nm was fabricated in advance on a silicon surface with two-beam interference using an 800 nm,50 fs femtosecond *** ultrafast dynamics of HSFL formation on the silicon surface of prefabricated LSFL under single femtosecond laser pulse irradiation were observed and analyzed for the first time using collinear pump-probe imaging *** general,the evolution of the surface structure undergoes five sequential stages:the LSFL begins to split,becomes uniform HSFL,degenerates into an irregular LSFL,undergoes secondary splitting into a weakly uniform HSFL,and evolves into an irregular LSFL or is *** results indicate that the local enhancement of the submerged nanocavity,or the nanoplasma,in the prefabricated LSFL ridge led to the splitting of the LSFL,and the thermodynamic effect drove the homogenization of the splitting LSFL,which evolved into HSFL.

关键词： laser-induced periodic surface structures(LIPSS) local field enhancement collinear pump-probe imaging silicon high spatial frequency periodic structures

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

VUCA环境下首席质量官胜任力模型构建研究

引用

江苏科技大学学报（社会科学版） 2024年第2期24卷 46-53,62页

作者：顾平江麒麟江苏科技大学经济管理学院镇江212100

当下,中国正经历“百年未有之大变局”,企业所处环境亦具有易变性、不确定性、复杂性、模糊性(Volatility、Uncertainty、Complexity、Ambiguity,简称VUCA)。质量成了兴国之道、富国之本、强国之策和企业之魂,高质量发展时代赋予了每位... 详细信息

当下,中国正经历“百年未有之大变局”,企业所处环境亦具有易变性、不确定性、复杂性、模糊性(Volatility、Uncertainty、Complexity、Ambiguity,简称VUCA)。质量成了兴国之道、富国之本、强国之策和企业之魂,高质量发展时代赋予了每位首席质量官更崇高的使命和责任。据此,采用文献综述法、专家访谈法、问卷调查法,结合可靠性分析、主成分分析、最大方差旋转法等数据分析方法,考虑到不同阶层的群体对胜任特征认可度的差异,利用独立样本t检验并引入差异系数对胜任特征权重进行调整,构建了VUCA环境下包含创新、应变力、洞察力等九个胜任特征的首席质量官胜任力模型。该模型能够为首席质量官的甄选、培养和管理提供参考。

关键词： VUCA 首席质量官胜任力因子分析

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

H型垂直轴风力发电机设计与数值模拟

引用

冶金设备 2024年第3期 10-17,39页

作者：刘辉蒋麒麟李生强梅晓雄贾伟杰郑琳荆楚理工学院通用航空学院湖北荆门448000

针对H型垂直轴风力发电机启动性能差、结构复杂且维护成本高等问题,设计一款300W的H型垂直轴风力发电机,对叶片、主传动轴以及制动装置进行设计和优化,同时运用SOLIDWORKS Flow Simulation软件对风力发电机进行仿真分析,计算出不同工况... 详细信息

针对H型垂直轴风力发电机启动性能差、结构复杂且维护成本高等问题,设计一款300W的H型垂直轴风力发电机,对叶片、主传动轴以及制动装置进行设计和优化,同时运用SOLIDWORKS Flow Simulation软件对风力发电机进行仿真分析,计算出不同工况下速度、压力以及分布力的大小。仿真结果表明所设计风力发电机安全性高,低风速启动性能好,为提高H型垂直轴风力发电机安全和效率,降低维护成本提供了参考思路。

关键词：垂直轴风力发电机制动装置流体仿真

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

Research and Practice of Project-Based Teaching and Examination Methods on Engineering Drawing for Excellent Class

Research and Practice of Project-Based Teaching and Examinat...

引用

2013教育技术与信息系统国际会议

作者： Xiaolan Yang Ting Zhang qilin jiang College of Mechanical Engineering Nanjing Institute of Technology

For the status and problems in the teaching of the "excellent class", the project-based teaching plan is raised to develop the basic capability of engineering drawing ability for the "excellent class". Through project-based teaching, course teaching, homework, engineering drawing and other teaching links to arouse the interest of the students and mobilize their initiative, and the students’ abilities to draw diagrams are improved effectively. These make the students have the really basic capabilities in engineering drawing which include knowledge and professionalism. It lays a solid foundation for the follow-up professional course learning. This educational practice can provide the beneficial reference to foster the basic capability of engineering drawing in regular class and other course reform.

关键词： Excellent class Engineering drawing Basic capability Project-based Educational practice

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

Extremely regular periodic surface structures in a large area efficiently induced on silicon by temporally shaped femtosecond laser

引用

Photonics Research 2021年第5期9卷 839-847页

作者： YUCHAN ZHANG qilin jiang KAIQIANG CAO TIANQI CHEN KE CHENG SHIAN ZHANG DONGHAI FENG TIANQING JIA ZHENRONG SUN JIANRONG QIU State Key Laboratory of Precision Spectroscopy School of Physics and Materials ScienceEast China Normal UniversityShanghai 200062China Collaborative Innovation Center of Extreme Optics Shanxi UniversityTaiyuan 030006China State Key Laboratory of Optical Instrumentation Zhejiang UniversityHangzhou 310027China

Femtosecond laser-induced periodic surface structures(LIPSS) have several applications in surface structuring and functionalization. Three major challenges exist in the fabrication of regular and uniform LIPSS: enhancing the periodic energy deposition, reducing the residual heat, and avoiding the deposited debris. Herein, we fabricate an extremely regular low-spatial-frequency LIPSS(LSFL) on a silicon surface by a temporally shaped femtosecond laser. Based on a 4 f configuration zero-dispersion pulse shaping system, a Fourier transform limit(FTL) pulse is shaped into a pulse train with varying intervals in the range of 0.25–16.2 ps using periodic π-phase step modulation. Under the irradiation of the shaped pulse with an interval of 16.2 ps, extremely regular LSFLs are efficiently fabricated on silicon. The scan velocity for fabricating regular LSFL is 2.3 times faster, while the LSFL depth is 2 times deeper, and the diffraction efficiency is 3 times higher than those of LSFL using the FTL *** formation mechanisms of regular LSFL have been studied experimentally and theoretically. The results show that the temporally shaped pulse enhances the excitation of surface plasmon polaritons and the periodic energy deposition while reducing the residual thermal effects and avoiding the deposition of the ejected debris, eventually resulting in regular and deeper LSFL on the silicon surface.

关键词： laser shaped periodic

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

Analysis on the Influence of Assembly Gap on CFRP Assembly Stress Based on Finite Element Method

Analysis on the Influence of Assembly Gap on CFRP Assembly S...

引用

作者： qilin jiang Junming Hou Xiwu Fang Hongrui Wang School of Mechanical and Electrical Engineering Nanjing University of Aeronautics and Astronautics School of Mechanical Engineering Nanjing Institute of Technology Industrial Center Nanjing Institute of Technology

Due to the material properties and forming process of composite laminates,it is difficult to avoid smaller assembly gaps in the assembly process of *** assembly process,liquid gaskets are generally used to compensate the smaller assembly gaps between ***,this paper established the equivalent assembly model of the laminated plate,and used the finite element analysis method to conduct numerical analysis and quantitative research on the mechanical influence of the assembly gap on the laminated plate assembly on the basis of analyzing the typical structure of the wing *** the results of finite element method are compared with the *** work provides a theoretical support to ensure the assembly quality of composite laminates.

关键词： Assembly gap Assembly stress CFRP Finite element method

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

Femtosecond laser-induced periodic structures:mechanisms, techniques, and applications

引用

Opto-Electronic Science 2022年第6期1卷 11-31页

作者： Yuchan Zhang qilin jiang Mingquan Long Ruozhong Han Kaiqiang Cao Shian Zhang Donghai Feng Tianqing Jia Zhenrong Sun Jianrong Qiu Hongxing Xu State Key Laboratory of Precision Spectroscopy School of Physics and Materials ScienceEast China Normal UniversityShanghai 200062China Collaborative Innovation Center of Extreme Optics Shanxi UniversityTaiyuan 030006China State Key Laboratory of Optical Instrumentation Zhejiang UniversityHangzhou 310027China

Over the past two decades,femtosecond laser-induced periodic structures(femtosecond-LIPSs)have become ubiquitous in a variety of materials,including metals,semiconductors,dielectrics,and ***-LIPSs have become a useful laser processing method,with broad prospects in adjusting material properties such as structural color,data storage,light absorption,and *** review discusses the formation mechanism of LIPSs,specifically the LIPS formation processes based on the pump-probe imaging *** pulse shaping of a femtosecond laser in terms of the time/frequency,polarization,and spatial distribution is an efficient method for fabricating high-quality *** LIPS applications are also briefly *** last part of this paper discusses the LIPS formation mechanism,as well as the high-efficiency and high-quality processing of LIPSs using shaped ultrafast lasers and their applications.

关键词： laser-induced periodic structures(LIPSs) formation mechanisms femtosecond pulse shaping pump-probe imaging structural color birefringent effects optical absorption photoluminescence

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

价值流在中小型企业生产管理中的应用研究

引用

山东师范大学学报（自然科学版） 2017年第3期32卷 144-150页

作者：姜麒麟齐鲁师范学院济南250014

通过现场的实际观察以及价值流对生产流程的分析,发现企业生产过程中出现生产线平衡率较低、增值时间比较低以及物流路线混乱等问题,利用工业工程方法对生产线平衡率进行改善,利用SLP方法对物流路线混乱以及增值时间比低等问题进行优化... 详细信息

通过现场的实际观察以及价值流对生产流程的分析,发现企业生产过程中出现生产线平衡率较低、增值时间比较低以及物流路线混乱等问题,利用工业工程方法对生产线平衡率进行改善,利用SLP方法对物流路线混乱以及增值时间比低等问题进行优化.针对价值流的短期性以及静态性的缺陷,提出利用仿真软件对仿真过程进行分析,弥补价值流的缺陷.通过改善,企业的增值时间比以及生产线平衡率都得到较大的改善.提高企业的生产运营能力,降低了企业的生产成本,对我国中小企业发展具有一定的现实意义.

关键词：价值流精益生产仿真分析

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

基于法布里-珀罗腔产生飞秒激光脉冲串在硅表面诱导高质量亚波长周期条纹(特邀)

引用

光子学报 2023年第7期52卷 1-12页

作者：许宇锋张羽婵蒋其麟沈辉辉贾天卿华东师范大学精密光谱科学与技术国家重点实验室上海200241

为了制备高质量表面周期结构,利用法布里-珀罗腔对飞秒激光进行时域整形,输出子脉冲间隔在1~300 ps内灵活可调的飞秒激光脉冲串,在硅表面诱导亚波长周期条纹。实验结果显示,利用飞秒激光脉冲串诱导得到的亚波长周期条纹明显优于原始高... 详细信息

为了制备高质量表面周期结构,利用法布里-珀罗腔对飞秒激光进行时域整形,输出子脉冲间隔在1~300 ps内灵活可调的飞秒激光脉冲串,在硅表面诱导亚波长周期条纹。实验结果显示,利用飞秒激光脉冲串诱导得到的亚波长周期条纹明显优于原始高斯光诱导的亚波长周期条纹。利用子脉冲间隔为100 ps的脉冲串诱导的亚波长条纹最佳,条纹周期为1008 nm,结构取向角为2.8°,边缘粗糙度为3.9 nm,可达到光刻工艺的标准。

关键词：激光加工激光诱导表面周期结构亚波长周期条纹法布里-珀罗腔飞秒激光脉冲串硅

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

Periodic transparent nanowires in ITO film fabricated via femtosecond laser direct writing

引用

Opto-Electronic Science 2023年第1期2卷 11-22页

作者： qilin jiang Long Chen Jukun Liu Yuchan Zhang Shian Zhang Donghai Feng Tianqing Jia Peng Zhou Qian Wang Zhenrong Sun Hongxing Xu State Key Laboratory of Precision Spectroscopy School of Physics and Electronic ScienceEast China Normal UniversityShanghai 200062China Huawei Technologies Co Ltd.Bantian Longgang DistrictShenzhen 518129China Collaborative Innovation Center of Extreme Optics Shanxi UniversityTaiyuan 030006China

This paper reports the fabrication of regular large-area laser-induced periodic surface structures(LIPSSs)in indium tin oxide(ITO)films via femtosecond laser direct writing focused by a cylindrical *** regular LIPSSs exhibited good properties as nanowires,with a resistivity almost equal to that of the initial ITO *** changing the laser fluence,the nanowire resistances could be tuned from 15 to 73 kΩ/mm with a consistency of±10%.Furthermore,the average transmittance of the ITO films with regular LIPSSs in the range of 1200-2000 nm was improved from 21%to 60%.The regular LIPSS is promising for transparent electrodes of nano-optoelectronic devices-particularly in the near-infrared band.

关键词： transparent nanowires periodic surface nanostructures femtosecond laser direct writing ITO film anisotropic electrical conductivity

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：