检索结果-内蒙古大学图书馆

KCl acts as a flux to assist the growth of sub-millimeter-scale metallic 2D non-layered molybdenum dioxide

Rare Metals 2025年第1期44卷 404-416页

作者： Li-Ying Deng Qing Zhang Wang-Yang Li Xiao-Yuan Ye Yi-Fan Zhao Shen-Zhong Chen Yu-Lan Wang Xing-Hui Wang Hui-Peng Chen Zhi-Yang Yu Qun Yan Shu-Ying Cheng Tai-Liang Guo Wen-Ping Hu Feng Ding Jie Sun National and Local United Engineering Laboratory of Flat Panel Display Technology College of Physics and Information EngineeringFuzhou UniversityFuzhou350100China Fujian Key Laboratory of Agricultural Information Sensing Technology College of Mechanical and Electrical EngineeringFujian Agriculture and Forestry UniversityFuzhou350002China Key Laboratory of Organic Integrated Circuit Department of ChemistrySchool of ScienceMinistry of Education and Tianjin Key Laboratory of Molecular Optoelectronic SciencesTianjin UniversityTianjin300072China Collaborative Innovation Center of Chemical Science and Engineering(Tianjin) Tianjin300072China College of Physics and Information Engineering Institute of Micro-Nano Devices and Solar CellsFuzhou UniversityFuzhou350108China State Key Laboratory of Photocatalysis on Energy and Environment College of ChemistryFuzhou UniversityFuzhou350116China Faculty of Materials Science and Engineering/Institute of Technology for Carbon Neutrality Shenzhen Institute of Advanced TechnologyChinese Academy of SciencesShenzhen518000China

Two-dimensional(2D)metal oxides(2DMOs),such as MoO_(2),have made impressive strides in recent years,and their applicability in a number of fields such as electronic devices,optoelectronic devices and lasers has been ***,2DMOs present challenges in their synthesis using conventional methods due to their non-van der Waals *** report that KCl acts as a flux to prepare large-area 2DMOs with sub-millimeter *** systematically investigate the effects of temperature,homogeneous time and cooling rate on the products in the flux method,demonstrating that in this reaction a saturated homogenous solution is obtained upon the melting of the salt and ***,the cooling rate was adjusted to regulate the thickness of the target crystals,leading to the precipitation of 2D non-layered material from the supersaturated solution;by applying this method,the highly crystalline non-layered 2D MoO_(2)flakes with so far the largest lateral size of up to sub-millimeter scale(~464μm)were *** studies have revealed that the 2D MoO_(2)features metallic properties,with an excellent sheet resistance as low as 99Ω·square^(-1 )at room temperature,and exhibits a property of charge density wave in the measurement of resistivity as a function of temperature.

关键词： 2D non-layered materials Metallic Metal oxide Thickness modulation Flux method

来源：评论

学校读者我要写书评

暂无评论

Design of the Telecentric Lens for Dual Side Imaging of the Small Size Particles with Equal Optical Path

Design of the Telecentric Lens for Dual Side Imaging of the ...

引用

2021 International Conference of Optical Imaging and Measurement, ICOIM 2021

作者： Wang, Xinsen Duan, Yafan Chen, Wenzhi Lin, Nuofei Ding, Jianling Liao, Tingdi Research Center for Photonics Technology Quanzhou Normal University Fujian Provincial Key Laboratory for Advanced Micro-Nano Photonics Technology and Devices Fujian Provincial Collaborative Innovation Center for Ultra-Precision Optical Eng. and Appli. Quanzhou China

ISBN: (纸本)9780738112121

Due to the industrial automation requirements, a machine vision is widely used in the industrial production and detection. Compared with the traditional artificial, it has the advantages of high speed and high accuracy, especially to the small-size granular products. It is difficult to detect the surfaces of the small-size granular products quickly and accurately by artificial vision due to the limitations of human eyes. Therefore, the machine vision system with large magnification and high resolution often being used. For the products that need to detect multiple surface, it is often necessary to configure multiple sets of machine vision systems, which are very complex. In order to realize the multi-surfaces detection of small-size granular products, a two-sided imaging telecentric optical lens is designed in this paper, which can image the adjacent surfaces of the product simultaneously using one set of machine vision system. The lens consists of five prisms for double-sided image conversion and splitting and six spherical lenses. It has 1 times magnification, high resolution and the telecentricity was less than 0.01 ° the working distance is 36.84mm. Because there is an inclined angle of the glass wedge in the meridian plane, which makes the meridian plane asymmetric, when the MTF value is 0.3, the Nyquist frequency of the meridian surface is 65 lp/mm, and the Nyquist frequency of the sagittal surface is 125 lp/mm. The maximum distortion of the system is controlled within 0.2%, and it is suitable for 2 / 3 "CCD. Through tolerance analysis, the lens has good tolerance compatibility, high cost performance, and can be mass produced. © 2021 IEEE.

关键词： Optical systems

来源：评论

学校读者我要写书评

暂无评论

Polarization maintaining all-fiber 2-μm pulse seeded by the soliton self-frequency shift of 1.5-μm pulse

Polarization maintaining all-fiber 2-μm pulse seeded by the...

引用

2024 advanced Fiber Laser Conference, AFL 2024

作者： Yu, Qichun Luo, Xing Wang, Jiachen Lu, Qitao Guo, Chunyu Ruan, Shuangchen Shenzhen Key Laboratory of Laser Engineering Guangdong Provincial Key Laboratory of Micro/Nano opt mechatronics Engineering Key Laboratory of Optoelectronic Devices and Systems of Ministry of Education and Guangdong Province College of Physics and Optoelectronic Engineering Shenzhen University Shenzhen518060 China Key Laboratory of Advanced Optical Precision Manufacturing Technology of Guangdong Higher Education Institutes Shenzhen Technology University Shenzhen518118 China Han’s Laser Technology Industry Group Co. Ltd. Shenzhen518057 China

ISBN: (数字)9781510688889

ISBN: (纸本)9781510688872

This study used erbium-doped fiber laser to pump highly nonlinear fibers to generate soliton self-frequency shift (SSFS), and implemented a full fiber polarization maintaining 2 μm master oscillator power amplifier (MOPA) system based on a 1.5 μm pulse laser frequency shift. By using saturable absorber (SA) mode-locked pulses as seed sources, a traditional soliton with a center wavelength of 1560-nm, and a repetition rate of 67-MHz was obtained. After two-stage amplification, the seed pulse can output a maximum average power of 982mW. After two stages of amplification, it can output a maximum average power of 982mW. Cascade a segment of polarization maintaining high nonlinear fiber (PM-HNLF) after the amplification stage, the amplified optical pulse generates soliton self-frequency shift in the PM-HNLF. In this work, a small core PM1550 fiber is used as the high nonlinear fiber, which can ultimately be frequency shifted to 2060nm, with a signal-to-noise ratio of (SNR) 73.32dB. The system is entirely constructed with polarization maintaining fibers, without any free space optical components, with strong anti-interference ability, good stability, and high integration. © 2025 SPIE.

关键词： Saturable absorbers

来源：评论

学校读者我要写书评

暂无评论

3μm watt level Dy: ZBLAN All-fiber high power lasers

3μm watt level Dy: ZBLAN All-fiber high power lasers

引用

2024 advanced Fiber Laser Conference, AFL 2024

作者： Zhang, Chun Li, Dianjia Dong, Fanlong Lue, Qitao Guo, Chunyu Ruan, Shuangchen Shenzhen Key Laboratory of Laser Engineering Guangdong Provincial Key Laboratory of Micro/Nano opt mechatronics Engineering Key Laboratory of Optoelectronic Devices and Systems of Ministry of Education and Guangdong Province College of Physics and Optoelectronic Engineering Shenzhen University Shenzhen518060 China Key Laboratory of Advanced Optical Precision Manufacturing Technology of Guangdong Higher Education Institutes Shenzhen Technology University Shenzhen518118 China Han’s Laser Technology Industry Group Co. Ltd. Shenzhen518057 China

ISBN: (数字)9781510688889

ISBN: (纸本)9781510688872

The mid-infrared band fiber lasers are very important for fundamental research and industrial applications. Mid-infrared fiber lasers in the 2 - 3.5 μm spectral region have been widely used in many fields, including gas remote sensing, molecular detection, material processing, and biomedicine. In this letter, by splicing the fluoride fiber and the quartz fiber, the 976 nm pump light was fused to a 6 m, 7 mol.%, Er3+:ZBLAN fiber system. With the fluoride fiber grating as the resonator, a 11.7 W continuous light output at 2.8 µm was achieved, realizing a high-power, all-fiber 2.8 µm laser. The laser center wavelength was 2826.6 nm, the maximum slope efficiency was 21.7%, and the beam quality M2 3+: ZBLAN fiber. Using the high-power 2.8 µm all-fiber laser as the pump source, it was fused to a 2.7 m, 0.2 mol.%, Dy3+:ZBLAN fiber system through a single-mode ZBLAN fiber. Two self-inscribed fiber Bragg gratings (FBGs) with reflectivities of 99.68% and 30.5% respectively were used to construct an all-fiber Fabry-Perot laser cavity. A 3.8 W continuous light output at 3.2 µm was achieved under a pump power of 7.7 W, realizing a high-power, all-fiber 3.2 µm laser. The laser center wavelength was 3198.97 nm, the measured slope efficiency was 53.0%, the maximum optical-to-optical efficiency was 49.4%, and the beam quality M2 © 2025 SPIE.

关键词： Fiber lasers

来源：评论

学校读者我要写书评

暂无评论

All-polarization-maintaining multi-pulse thulium-doped fiber laser based on nonlinear polarization rotation

All-polarization-maintaining multi-pulse thulium-doped fiber...

引用

2024 advanced Fiber Laser Conference, AFL 2024

作者： Wang, Tao Li, Zhuobiao Wang, Jiachen Xing, Luo Dong, Fanlong Lue, Qitao Guo, Chunyu Ruan, Shuangchen Shenzhen Key Laboratory of Laser Engineering Guangdong Provincial Key Laboratory of Micro/Nano opt mechatronics Engineering Key Laboratory of Optoelectronic Devices and Systems of Ministry of Education and Guangdong Province College of Physics and Optoelectronic Engineering Shenzhen University Shenzhen518060 China Key Laboratory of Advanced Optical Precision Manufacturing Technology of Guangdong Higher Education Institutes Shenzhen Technology University Shenzhen518118 China Han’s Laser Technology Industry Group Co. Ltd. Shenzhen518057 China

ISBN: (数字)9781510688889

ISBN: (纸本)9781510688872

Soliton molecule multi-pulse output was achieved based on an all-polarization-maintaining thulium-doped fiber, with a central wavelength of 1970.6 nm, a pulse repetition frequency of 12.39 MHz, and an average output power of 8 mW. Due to the low pulse output power obtained, it was impossible to measure the pulse width using a commercial autocorrelator, and the oscilloscope could not resolve pulse intervals below 50 ps, thus the symmetric waveform of the soliton molecule was not observed. As the pump power varied, the laser could switch between soliton cluster pulse and noise-like pulse outputs. The laser structure consisted of an all-polarization-maintaining ring cavity pumped by a 793 nm laser. © 2025 SPIE.

关键词： Mode-locked fiber lasers

来源：评论

学校读者我要写书评

暂无评论

Bilayer carbon-based structure with the promotion of homogenous nucleation for lithium metal anodes

引用

Science China(Technological Sciences) 2022年第7期65卷 1558-1566页

作者： SHAO YeQing XIE YongHui YANG Yang CAO JiaQi LI XiuWan LI WangYang ZHANG QiaoLi CHENG ShouLin CHENG ShuYing WANG XingHui College of Physics and Information Engineering Institute of Micro-Nano Devices and Solar CellsFuzhou UniversityFuzhou 350108China Fujian Science&Technology Innovation Laboratory for Optoelectronic Information of China Fuzhou 350108China Fujian Provincial Key Laboratory of Light Propagation and Transformation College of Information Science and EngineeringHuaqiao UniversityXiamen 361000China Jiangsu Collaborative Innovation Center of Photovoltaic Science and Engineering Changzhou 213000China Fujian Key Laboratory of Electrochemical Energy Storage Materials Fuzhou UniversityFuzhou 350002China

Lithium metal anodes (LMAs) are considered as the promising alternatives for next-generation high energy density batteries,but are still hampered by the severe growth of uncontrollable lithium *** growth of lithium dendrites induces poor cycling lifespan and serious safety concerns,dragging lithium metal batteries out of practical *** designed a bilayer carbonbased structure covered with Co/C nanosheets and vertical graphene sheets (VGS).The enormous specific surface area and uniformly distributed Co nanoparticles of the CC@Co/C-VGS host are derived from its unique design,which can reduce local current density and nucleation overpotential,resulting in a dendrite-free morphology and exceptional cycling *** cells exhibit over 400 cycles (800 h) at a high current density/capacity of 10 mA cm^(-2)/10 mA h cm^(-2).Full cells using LiFePO_(4)as the cathode have an enhanced rate capability and a prolonged lifespan,reaching 90 mA h g^(-1)after 1000 cycles at 2 C with 73.5% capacity *** unique design sheds light on developing high-performance LMAs.

关键词： lithiophilic material bilayer carbon structure graphene MOF lithium metal anode

来源：评论

学校读者我要写书评

暂无评论

A New Method for Auto-Inspecting Both Opposite Surfaces of Tec Components Based on Equal-Optical-Path Imaging System

A New Method for Auto-Inspecting Both Opposite Surfaces of T...

引用

2021 International Conference on advanced Optics and photonics Research in Engineering, AOPR 2021

作者： Liao, Tingdi Huang, Qilu Yan, Shaobin Chen, Wenzhi Duan, Yafan Huang, Yantang Research Center for Photonics Technology Quanzhou Normal University Fujian Quanzhou362000 China Fujian Provincial Key Laboratory for Advanced Micro-nano Photonics Technology and Devices Fujian Quanzhou362000 China Fujian Provincial Collaborative Innovation Center for Ultra-Precision Optical Engineering and Applications Fujian Quanzhou362000 China

An new optical method for simultaneously inspecting opposite surfaces defects of thermoelectric cooler (TEC) components that meets condition of equal optical paths for both surfaces imaging has been proposed. The optical apparatus for surfaces defects inspection has been designed and established with "confocal" imaging system consisting of two trapzoid reflection prisms and one optical images combiner. Experimental investigations on defects inspection with the "confocal" imaging system have been carried out. The results showed that the proposed optical method can be used to simultaneously inspect the defects of opposite surfaces of TEC components without need to employ a tele-centric imaging lens with large depth of focus. It was concluded that the optical inspection method can meet the technical requirements for inspecting opposite surfaces (both side surfaces, or both top and bottom surfaces) defects of TEC components and has advantages of equal good imaging quality, increased inspection accuracy and throughput, simplified system configuration and improved system reliability etc. © 2021 Institute of Physics Publishing. All rights reserved.

关键词： Inspection

来源：评论

学校读者我要写书评

暂无评论

Kilowatt level high-power thulium doped fiber laser

Kilowatt level high-power thulium doped fiber laser

引用

2024 advanced Fiber Laser Conference, AFL 2024

作者： Zhang, Xiao Dong, Fanlong Yan, Peiguang Wang, Jinzhang Lue, Qitao Guo, Chunyu Ruan, Shuangchen Shenzhen Key Laboratory of Laser Engineering Guangdong Provincial Key Laboratory of Micro/Nano Optomechatronics Engineering Key Laboratory of Optoelectronic Devices and Systems of Ministry of Education and Guangdong Province State Key Laboratory of Radio Frequency Heterogeneous Integration College of Physics and Optoelectronic Engineering Shenzhen University Shenzhen518060 China Key Laboratory of Advanced Optical Precision Manufacturing Technology of Guangdong Higher Education Institutes Shenzhen Technology University Shenzhen518118 China Han’s Laser Technology Industry Group Co. Ltd. Shenzhen518057 China

ISBN: (数字)9781510688889

ISBN: (纸本)9781510688872

In this paper, a high power Tm3+-doped fiber laser (TDFL) based on a monolithic master oscillator power amplifier (MOPA) system with the center wavelength is 1940 nm is *** maximum laser power was measured to be 909 W with a slope efficiency of 50.1% at the 793 nm pump power of 1816 W. Power stability of the laser output over 60 min is measured to be ~0.14% .Output power is pump-limited without the onset of parasitic oscillation or amplified spontaneous emission (ASE) even at the maximum power, showing further power scaling should be possible with increase the pump power. © 2025 SPIE.

关键词： Optical pumping

来源：评论

学校读者我要写书评

暂无评论

Spin angular momentum engineering within highly localized focal fields: from simple orientation to complex topologies

引用

photonics Research 2025年第4期 995-1009页

作者： YONGXI ZENG YANZHONG YU JIAN CHEN HOUAN TENG MUSHENG CHEN PINGHUI WU QIWEN ZHAN College of Physics and Information Engineering Quanzhou Normal University School of Optical-Electrical and Computer Engineering University of Shanghai for Science and Technology Fujian Provincial Key Laboratory for Advanced Micro-nano Photonics Technology and Devices & Key Laboratory of Information Functional Material for Fujian Higher Education

Optical skyrmions, as quasiparticles with non-trivial topological structures, have garnered significant attention in recent years. This paper proposes a method for customized spin angular momentum (SAM) distribution in highly localized focal fields, thereby enabling the generation of SAM skyrmion and bimeron topologies. The skyrmionic SAM textures can be flexibly controlled, such as polarity, vorticity, and helicity. In addition, the two-dimensional projection plane can be arbitrarily oriented within three-dimensional space.

关键词：

来源：评论

学校读者我要写书评

暂无评论

Observation of spatiotemporal dynamics for topological surface states with on-demand dispersion

引用

photonics Research 2024年第12期12卷 2919-2930页

作者： ZHANYUAN ZHANG ZHIHAO LAN PENGBAI XU LEIMING WU MENGLIN L.N.CHEN WEI E.I.SHA YI XU YUWEN QIN Key Laboratory of Photonic Technology for Integrated Sensing and Communication Ministry of EducationInstitute of Advanced Photonic TechnologySchool of Information EngineeringGuangdong University of TechnologyGuangzhou 510006China Department of Electronic and Electrical Engineering University College LondonLondon WC1E7JEUK Guangdong Provincial Key Laboratory of Information Photonics Technology Institute of Advanced Photonic TechnologySchool of Information EngineeringGuangdong University of TechnologyGuangzhou 510006China Department of Electrical and Electronic Engineering The Hong Kong Polytechnic UniversityHong KongChina Key Laboratory of Micro-Nano Electronic Devices and Smart Systems of Zhejiang Province College of Information Science and Electronic EngineeringZhejiang UniversityHangzhou 310027China

Dispersion management in guided wave optics is of vital importance for various *** photonics opens new horizons for manipulating unidirectional guided waves utilizing edge ***,the experimental observation of spatiotemporal dynamics for guided waves with on-demand dispersion in topological photonic crystal is an important issue awaiting ***,we experimentally investigate the spatiotemporal properties of topological surface states with on-demand dispersion,where they are supported by a truncated valley photonic crystal with surface *** observe the electromagnetic dynamics of surface states with typical dispersions,where dynamical trapping of an electromagnetic pulse mediated by the unidirectional surface state with flat dispersion and backward beam routing using reversed dispersion properties are achieved in photonic crystal *** numerical and experimental results substantiate the ultimate dispersion management for topological surface states,which could pave new ways for the manipulation of electromagnetic waves on the surface of photonic devices.

关键词： dispersion surface dynamics

来源：评论

学校读者我要写书评

暂无评论

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

请选择保存的检索档案：

请选择收藏分类：

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

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

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：