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基于金属铑和二氧化硅材料的紫外线超宽带吸收器

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中国激光 2024年第2期51卷 195-203页

作者：樊浩田薛文瑞陈宇婷孟凡义李昌勇山西大学物理电子工程学院山西太原030006 山西大学激光光谱研究所量子光学与光量子器件国家重点实验室山西太原030006 山西大学极端光学协同创新中心山西太原030006

设计了一种基于金属铑(Rh)和二氧化硅(SiO_(2))材料的紫外线吸收器,其单元结构由Rh衬底、SiO_(2)电介质层和Rh图案层构成。采用有限元方法(FEM)分析了该吸收器的吸收特性与入射波波长、入射角、方位角和几何结构参数的依赖关系。结果表... 详细信息

设计了一种基于金属铑(Rh)和二氧化硅(SiO_(2))材料的紫外线吸收器,其单元结构由Rh衬底、SiO_(2)电介质层和Rh图案层构成。采用有限元方法(FEM)分析了该吸收器的吸收特性与入射波波长、入射角、方位角和几何结构参数的依赖关系。结果表明,该紫外线吸收器通过表面等离子体共振效应达到吸收目的。通过调整单元结构的几何参数,可以调整该吸收器的吸收特性。由于结构的旋转对称性,该吸收器具有偏振不敏感性。在所有结构参数均采用最优值的情况下,当入射角为0°~45°、波长为200~400 nm时,均能获得90%以上的高吸收率。吸收率为95%的波段为250~300 nm及325~400 nm。所设计的紫外线超宽带吸收器具有优良的吸收性能。采用的Rh金属为紫外波段内吸收材料的选择提供了新的选项。研究结果为紫外线吸收器的设计、制作和应用提供了参考。

关键词：光学器件紫外线吸收器宽带 Rh 表面等离子体共振

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Framework and Key Technologies of Human-machine Hybrid-augmented Intelligence System for Large-scale Power Grid Dispatching and Control

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CSEE Journal of Power and Energy Systems 2024年第1期10卷 1-12页

作者： Shixiong fan Jianbo Guo Shicong Ma Lixin Li Guozheng Wang haotian Xu Jin Yang Zening Zhao China Electric Power Research Institute Beijing 100192China the Beijing Huairou Laboratory Beijing 101400China School of Engineering the University of GlasgowGlasgow G128QQUK

With integration of large-scale renewable energy,new controllable devices,and required reinforcement of power grids,modern power systems have typical characteristics such as uncertainty,vulnerability and openness,which makes operation and control of power grids face severe security *** of artificial intelligence(AI)technologies represented by machine learning in power grid regulation is limited by reliability,interpretability and generalization ability of complex *** of hybrid-augmented intelligence(HAI)based on human-machine collaboration(HMC)is a pivotal direction for future development of AI technology in this *** on characteristics of applications in power grid regulation,this paper discusses system architecture and key technologies of human-machine hybrid-augmented intelligence(HHI)system for large-scale power grid dispatching and control(PGDC).First,theory and application scenarios of HHI are introduced and analyzed;then physical and functional architectures of HHI system and human-machine collaborative regulation process are *** technologies are discussed to achieve a thorough integration of human/machine ***,state-of-theart and future development of HHI in power grid regulation are summarized,aiming to efficiently improve the intelligent level of power grid regulation in a human-machine interactive and collaborative way.

关键词： Artificial intelligence human-machine collaborative control human-machine hy brid intelligence optimization and evolution power grid dispatching and control

π-Extended giant dimeric acceptor as a third component enables highly efficient ternary organic solar cells with efficiency over 19.2%

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Journal of Energy Chemistry 2024年第8期95卷 263-270,I0006页

作者： Mengran Peng haotian Wu Liming Wu Jianhua Chen Ruijie Ma Qunping fan Hua Tan Weiguo Zhu Hongxiang Li Junqiao Ding School of Chemical Science and Technology Yunnan UniversityKunming 650500YunnanChina Department of Electrical and Electronic Engineering Research Institute for Smart Energy(RISE)Guangdong-Hong Kong-Macao(GHM)Joint Laboratory for Photonic-Thermal-Electrical Energy Materials and DevicesThe Hong Kong Polytechnic UniversityKowloonHong Kong 999077China State Key Laboratory for Mechanical Behavior of Materials Xi’an Jiaotong UniversityXi’an 710049ShaanxiChina School of Materials Science and Engineering Jiangsu Engineering Laboratory of Light-Electricity-Heat Energy-Converting Materials and ApplicationsChangzhou UniversityChangzhou 213164JiangsuChina College of Polymer Science and Engineering State Key Laboratory of Polymer Materials EngineeringSichuan UniversityChengdu 610065SichuanChina

Ternary strategy with a suitable third component is a successful strategy to improve the photovoltaic performance of organic solar cells(OSCs).Very recently,Y-series based giant molecule acceptors or oligomerized acceptors have emerged as promising materials for achieving highly efficient and stable binary OSCs,while application as third component for ternary OSCs is *** a novelπ-extended giant dimeric acceptor,GDF,is developed based on central Y series core fusion and rigid BDT as linker,and then incorporated into the state-of-the-art PM1:PC6 system to construct ternary *** GDF has a near planar backbone,resulting in increasedπ-conjugation,excellent crystallinity,and good electron transport *** GDF is introduced into the PM1:PC6 system,it ensues in a cascade like the lowest unoccupied molecular orbitals(LUMO)energy level alignment,a complementary absorption band with PM1 and PC6,higher and balanced hole and electron mobility,slightly smaller domain size,and a higher exciton dissociation probability for PM1:PC6:GDF(1:1.1:0.1)blend *** a consequence,the PM1:PC6:GDF(1:1.1:0.1)ternary OSC achieves a champion PCE of 19.22%,with a significantly higher open-circuit voltage and short-circuit current density,compared to 18.45%for the PM1:PC6(1:1.2)binary *** findings show that employing aπ-extended giant dimeric acceptor as a third component significantly improves the photovoltaic performance of ternary OSCs.

关键词： Giant dimeric acceptor Third component Ternary organic solar cells

Investigation of short-channel design on performance optimization effect of Hall thruster with large height–radius ratio

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Plasma Science and Technology 2022年第2期24卷 1-9页

作者：范昊天丁永杰牟春锦魏立秋李鸿于达仁 Plasma Propulsion Lab Institute of Advanced PowerHarbin Institute of TechnologyHarbin 150001People's Republic of China Key Laboratory of Aerospace Plasma Propulsion Ministry of Industry and Information TechnologyHarbin 150001People's Republic of China

In this study,the neutral gas distribution and steady-state discharge under different discharge channel lengths were studied via numerical *** results show that the channel with a length of 22 mm has the advantage of comprehensive discharge *** this time,the magnetic field intensity at the anode surface is 10%of the peak magnetic field *** analysis shows that the high-gas-density zone moves outward due to the shortening of the channel length,which optimizes the matching between the gas flow field and the magnetic field,and thus increases the ionization *** outward movement of the main ionization zone also reduces the ion loss on the wall ***,the propellant utilization efficiency can reach a maximum of 96.8%.Moreover,the plasma potential in the main ionization zone will decrease with the shortening of the *** excessively short-channel will greatly reduce the voltage utilization *** thrust is reduced to a minimum of 46.1 m ***,because the anode surface is excessively close to the main ionization zone,the discharge reliability is also difficult to *** was proved that the performance of Hall thrusters can be optimized by shortening the discharge channel appropriately,and the specific design scheme of short-channel of HEP-1350 PM was defined,which serves as a reference for the optimization design of Hall thruster with large height–radius *** shortchannel design also helps to reduce the thruster axial dimension,further consolidating the advantages of lightweight and large thrust-to-weight ratio of the Hall thruster with large height–radius ratio.

关键词： Hall thruster large height-radius ratio short-channel design discharge performance numerical simulation

基于VO2、NaF和TiO2材料的红外线超宽带吸收器

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中国激光 2023年第6期50卷 184-193页

作者：陈宇婷薛文瑞张敬樊浩田李昌勇山西大学物理电子工程学院山西太原030006 山西大学激光光谱研究所量子光学与光量子器件国家重点实验室山西太原030006 山西大学极端光学协同创新中心山西太原030006

设计了一种基于VO_(2)、NaF和TiO_(2)材料的红外线超宽带可调吸收器,并采用有限元方法对其吸收特性进行了分析。结果表明:当入射波垂直入射时,吸收率对偏振角不敏感。在21~25μm及35~43μm波长范围内,吸收率可以达到99.8%。在12~51μm... 详细信息

设计了一种基于VO_(2)、NaF和TiO_(2)材料的红外线超宽带可调吸收器,并采用有限元方法对其吸收特性进行了分析。结果表明:当入射波垂直入射时,吸收率对偏振角不敏感。在21~25μm及35~43μm波长范围内,吸收率可以达到99.8%。在12~51μm范围内,吸收率可以达到90%。在0~55°入射角范围内,横磁(TM)波在12~52μm波长范围内,横电(TE)波在20~45μm波长范围内,吸收率均可达到80%以上。获得宽带吸收的主要原因是表面等离子体共振效应。通过改变VO_(2)的电导率,可以调节吸收器的吸收率,实现吸收率的可调性。所设计的红外线超宽带吸收器具有优良的吸收性能,在传感、探测及能量收集和转化等方面具有潜在的应用价值。

关键词：表面光学红外线吸收器宽带 VO_(2) NaF TiO_(2) 表面等离子共振

Combating the Epidemic Outbreak in Unity——Touching Stories of Wuhan People Working Shoulder to Shoulder

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Peace 2020年第1期 34-41页

作者： He Guanghua Zhang Zhifeng Fu Wen Cheng Yuanzhou fan haotian People’s Daily

The COVID-19 outbreak was suddenly *** this battlefield,where there is no smoke of gunpowder,Wuhan people help each other and work shoulder to shoulder in *** touching stories are examples in this city where the novel... 详细信息

关键词： Unity smoke Touch

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十堰茅箭:社区吹哨党员报到

社会与公益 2022年第7期13卷 23-24页

作者：范昊天蔡远铭不详

炎炎夏日,看着窗外枝繁叶茂的树木,周继红又想起了那两棵玉兰树。周继红是湖北省十堰市人社局副局长,今年以来,十堰市和茅箭区两级政府发动各单位处级干部下沉社区,联系对接社区工作,周继红负责五堰街道东岳社区。不久前,东岳社区翔泰... 详细信息

炎炎夏日,看着窗外枝繁叶茂的树木,周继红又想起了那两棵玉兰树。周继红是湖北省十堰市人社局副局长,今年以来,十堰市和茅箭区两级政府发动各单位处级干部下沉社区,联系对接社区工作,周继红负责五堰街道东岳社区。不久前,东岳社区翔泰公寓小区4号楼有居民反映,小区院内有两棵玉兰树,因常年无人修剪影响采光。周继红积极同园林部门协商沟通,组织专业人员,对树木进行了修剪,采光问题得到了解决。

关键词：副局长处级干部湖北省十堰市茅箭区玉兰树协商沟通人社局两级政府

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数字经济、劳动力资源配置与高质量就业

调研世界 2024年第6期 41-51页

作者：范玉莹郑浩天青岛大学经济学院

数字经济作为一种新型经济形态,对劳动力市场运转以及劳动者就业质量产生影响。本文利用2008—2021年省级面板数据,从劳动力资源配置角度解释数字经济发展对高质量就业的影响的内在机理。结果表明:数字经济发展会显著促进高质量就业。其... 详细信息

数字经济作为一种新型经济形态,对劳动力市场运转以及劳动者就业质量产生影响。本文利用2008—2021年省级面板数据,从劳动力资源配置角度解释数字经济发展对高质量就业的影响的内在机理。结果表明:数字经济发展会显著促进高质量就业。其中,劳动力资源配置效率在两者关系间发挥机制作用,即数字经济发展会通过改善劳动力错配程度来实现高质量就业。进一步分析表明,数字经济发展促进高质量就业具备“边际效应”递增的非线性特征,且地区劳动力错配程度在其中发挥门槛作用,会负向调节两者间的非线性关系。因此,推动数字经济与实体经济深度融合,引导劳动力要素合理畅通有序流动,对实现更高质量充分就业具有重要意义。

关键词：数字经济劳动力资源配置高质量就业

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抚育间伐对长白落叶松人工林树木结构复杂性的影响

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应用生态学报 2024年第7期35卷 1744-1752页

作者：王帆贾炜玮李凤日李丹丹郭昊天东北林业大学林学院哈尔滨150040 东北林业大学森林生态系统可持续经营教育部重点实验室哈尔滨150040

本研究以孟家岗林场不同间伐强度的长白落叶松人工林为对象,获取样地内单木点云数据,基于MATLAB平台应用分形分析理论提取盒维数来表征长白落叶松树木结构复杂性,并评估不同间伐强度及树木属性对长白落叶松树木结构复杂性的影响。结果表... 详细信息

本研究以孟家岗林场不同间伐强度的长白落叶松人工林为对象,获取样地内单木点云数据,基于MATLAB平台应用分形分析理论提取盒维数来表征长白落叶松树木结构复杂性,并评估不同间伐强度及树木属性对长白落叶松树木结构复杂性的影响。结果表明:长白落叶松盒维数在对照(CK:1.68±0.07)、低中强度间伐(处理T_(1)、T_(2)、T_(3):1.74±0.07)和高强度间伐(处理T4:1.81±0.06)之间存在显著差异,间伐强度增加了树木结构复杂性。在树干属性中,胸径、树高与盒维数呈显著正相关,高径比与盒维数呈显著负相关;在树冠属性中,树冠体积、表面积、投影面积和冠幅与盒维数呈显著正相关。Hegyi竞争指数与盒维数在对照和低中强度间伐下呈显著负相关,在高强度间伐下相关性不显著。间伐影响了长白落叶松树木结构复杂性,树干属性和树冠属性是长白落叶松树木结构复杂性的主要驱动因素。

关键词：长白落叶松人工林间伐分形分析盒维数结构复杂性地基激光雷达

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