检索结果-南通市图书馆

Sb吸附在InP(1.0)表面电子性质的理论研究

在线全文

学校读者我要写书评

暂无评论

物理学报 1999年第7期48卷 1334-1339页

作者：王松有贾瑜石寿珠马丙现陈良尧复旦大学物理系郑州大学物理工程学院华北水利水电学院

利用形式散射的格林函数方法，研究了Ｓｂ在ＩｎＰ（１１０）表面单层吸附时的电子性质．分别计算了清洁的ＩｎＰ（１１０）弛豫表面和ＩｎＰ（１１０）Ｓｂ（１ＭＬ）体系的表面态的性质，指出了表面态和表面共振态产生的原因．

关键词：磷化铟电子性质表面态锑吸附

Design of hadronic calorimeter for DarkSHINE experiment

在线全文

学校读者我要写书评

暂无评论

Nuclear Science and Techniques 2024年第9期35卷 155-167页

作者： Zhen Wang Rui Yuan Han-Qing Liu Jing chen Xiang chen Kim Siang Khaw Liang Li Shu Li Kun Liu Qi-Bin Liu Si-Yuan Song Tong Sun Xiao-Long Wang Yu-Feng Wang Hai-Jun Yang Jun-Hua Zhang Yu-Lei Zhang Zhi-Yu Zhao Chun-Xiang {2. Xu-Liang {2. Yi-Fan {2. Tsung-Dao Lee Institute Shanghai Jiao Tong University1 Lisuo RoadShanghai 201210China Institute of Nuclear and Particle physics School of Physics and Astronomy800 Dongchuan RoadShanghai 200240China Key Laboratory for Particle Astrophysics and Cosmology(MOE) Shanghai Key Laboratory for Particle Physics and Cosmology(SKLPPC)Shanghai Jiao Tong University800 Dongchuan RoadShanghai 200240China Key Laboratory of Nuclear physics and Ion-beam Application(MOE) Fudan UniversityShanghai 200443China Institute of Modern physics Fudan UniversityShanghai 200443China

The sensitivity of the dark photon search through invisible decay final states in low-background experiments relies sig-nificantly on the neutron and muon veto efficiencies,which depend on the amount of material used and the design of the detector *** paper presents the optimized design of the hadronic calorimeter(HCAL)used in the DarkSHINE experiment,which is studied using a GEANT4-based simulation *** geometry is optimized by comparing a traditional design with uniform absorbers to one that uses different thicknesses at different locations on the detector,which enhances the efficiency of vetoing low-energy neutrons at the sub-GeV *** overall size and total amount of material used in the HCAL are optimized to be lower,owing to the load and budget requirements,whereas the overall performance is studied to satisfy the physical objectives.

关键词： Hadronic calorimeter GEANT4 simulation Neutron background Scintillation detector Dark photon

Highly efficient tunable photodetector with a bipolar response in van der Waals heterojunctions

在线全文

学校读者我要写书评

暂无评论

Science china(Technological Sciences) 2024年第2期67卷 639-646页

作者： SHI ChaoFan ZHANG Shi XIAO KeNing ZHANG LiBo HAN Li zhu YuLin TANG WeiWei LIU ChangLong LI GuanHai {1. XiaoShuang College of physics and Optoelectronic Engineering Hangzhou Institute for Advanced StudyUniversity of Chinese Academy of Sciences Hangzhou310024China State Key Laboratory of Infrared physics Shanghai Institute of Technical PhysicsChinese Academy of SciencesShanghai 200083China

The heterojunction integration of two-dimensional(2.)materials via van der Waals(vdW)forces,unencumbered by lattice and processing constraints,constitutes an efficacious approach to enhance the overall optoelectronic performance of photodetectors,due to an assortment of distinctive light-matter ***,vdW heterojunction photodetectors based on transition metal dichalcogenides(TMDs)face an inevitable trade-off between low dark currents and high responsivity,curtailing the application potential of myriad novel optoelectronic components in sensing,spectral,and communication *** this study,we present the successful actualization of a highly sensitive,self-powered,and gate-tunable bipolar response *** mechanisms underlying photocurrent generation were scrutinized via bias-,power-,and position-dependent mapping photoresponse measurements,identifying the photovoltaic effect,which is attributable to the Schottky junction’s built-in electric field,as the predominant *** prototype Au-WS2.graphene photodetector exhibits a remarkable light on/off ratio of 1.2.1.^(6),a specific detectivity of 6.1.×1.^(1.)cm H^(z1.2.W^(-1.with 2.μs response time at 638 *** wide gate-tunable responsivity provides an adjustability scope,ranging from 0.9 to 3.1.A W^(-1..Notably,the device demonstrates an exceptional linear photocurrent response,with a linear dynamic range(LDR)value approximating 1.0 dB,which significantly surpasses that of other photodetectors based on TMDs.

关键词： WS2.graphene van der Waals heterojunction gate-tunable bipolar response

A=80区奇奇核signature反转现象研究

在线全文

学校读者我要写书评

暂无评论

西南师范大学学报（自然科学版） 2000年第6期25卷 648-651页

作者：程南璞郑仁蓉朱顺泉文家焱西南师范大学物理系重庆400715 上海师范大学理工信息学院物理系上海200234 海军广州舰艇学院计算机教研室广州510431

利用粒子转子模型对A =80区多个奇奇核的晕带能谱进行了实际计算 ,结果表明

关键词：粒子-转子模型奇奇核 signAture反转晕带能

All-optical control of polarization and intensity of light in periodically poled lithium niobate

在线全文

学校读者我要写书评

暂无评论

All-optical control of polarization and intensity of light i...

Abnormal signature inversion and gigantic alignments in doubly-odd 1.6Ⅰ

2.1.亚洲光电子会议量子光学和非线性光学分会场

作者： Yan Kong 1.2.Xianfen chen 3 Tuo {1. 1.1.Department of Optical Information Science and Technology Jiangnan university 1.00 Lihu Avenue Wuxi 2.0}1.2.china 2.School of Communication and control Engineering Jiangnan university 1.00 Lihu Avenue Wuxi 2.0}1.2.china 3 Department of physics The State Key Laboratory on Fiber Optic Local Area Communication Networks and Advanced Optical Communication System shanghai Jiao Tong university 800 Dongchuan Rd.shanghai 2.02.0 china

We propose a method to control the polarization and magnitude of light by introducing another pump wave （control-light） in periodically poled lithium niobate （PPLN）.Cascaded polarization coupling and second harmonic generation （SHG） in a single PPLN are described by the wave-coupling *** numerical simulations show that the control-light wave breaks the original energy coupling behavior among three *** results indicate that the output can be fine tuned by the phase and intensity of the control-light.

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

Abnormal signature inversion and gigantic alignments in doub...

Nanoscale phase management of the 2./3D heterostructure toward efficient perovskite solar cells

第十四届全国核结构大会暨第十次全国核结构专题讨论会

作者： Y.zheng,~1 L.H.zhu,~(2.3,(?)) X.G.Wu,~(1,+) Z.C.Gao,~1 C.Y.He,~1 G.S.Li,~1 L.L.Wang,~1, 4 Y.S.{2.,~1 Y.Sun,~(5,6) X.Hao,~1 Y.Liu,~1 X.Q.Li,~1 B.Pan,~1 Y.J.Ma,~4 Z.Y.Li,~7 and H.B.Ding~8 1.3} Institute of Atomic Energy,Beijing 102.13,china 2.School of physics and Nuclear Energy Engineering,Beihang university,Beijing 100191,china 3 Faculty of Science,ShenZhen university,Shenzhen 518060,china 4 Department of physics,Jilin university,Changchun 13002.,china 5 Department of physics,shanghai Jiao Tong university,shanghai 2.02.0,china 6 Joint Institute for Nuclear Astrophysics,university of Notre Dame,Notre Dame, Indiana 46556,USA 7 School of physics,Peking university,Beijing 100871,china 8 Department of physics,Tsinghua university,Beijing 100084,china

The previously reported level scheme of I has been extended and modified considerably by the reaction of Sn(Li,5n)I at the beam energy of 48 *** first band crossing in the yrast band is found due to alignments of a pa...

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

Science Bulletin 2024年第18期69卷 2853-2861页

作者： Hao Gu Annan zhu Junmin Xia Wang Li Jiahao {1. Tao Yang Shengwen Li Nan Zhang Shiliang Mei Yongqing Cai Shi {2. Chao Liang Guichuan Xing Joint Key Laboratory of the Ministry of Education Institute of Applied Physics and Materials EngineeringUniversity of MacaoMacao 999078China State Key Laboratory of Organic Electronics and Information Displays&Institute of Advanced Materials(IAM) Jiangsu National Synergetic Innovation Center for Advanced Materials(SICAM)Nanjing University of Posts&Telecommunications(NUPT)Nanjing 210023China MOE Key Laboratory for Nonequilibrium Synthesis and Modulation of Condensed Matter School of PhysicsNational Innovation Platform(Center)for Industry-Education Integration of Energy Storage TechnologyXi’an Jiaotong UniversityXi’an 710049China Ministry of Industry and Information Technology Key Lab of Micro-Nano Optoelectronic Information System Guangdong Provincial Key Laboratory of Semiconductor Optoelectronic Materials and Intelligent Photonic SystemsHarbin Institute of TechnologyShenzhen 518055China Institute for Electric Light Sources School of Information Science and TechnologyFudan UniversityShanghai 200433China

The stabilization of the formamidinium lead iodide(FAPbI_(3))structure is pivotal for the development of efficient photovoltaic *** two-dimensional(2.)layers to passivate the threedimensional(3D)perovskite is essential for maintaining the a-phase of FAPbI_(3) and enhancing the power conversion efficiency(PCE)of perovskite solar cells(PSCs).However,the role of bulky ligands in the phase management of 2. perovskites,crucial for the stabilization of FAPbI_(3),has not yet been *** this study,we synthesized nanoscale 2. perovskite capping crusts with=1.and 2.Ruddlesden-Popper(RP)perovskite layers,respectively,which form a type-Ⅱ 2./3D *** heterostructure stabilizes the a-phase of FAPbI_(3),and facilitates ultrafast carrier extraction from the 3D perovskite network to transport contact *** introduced tri-fluorinated ligands to mitigate defects caused by the halide vacancies and uncoordinated Pb^(2.)ions,thereby reducing nonradiative carrier recombination and extending carrier *** films produced were incorporated into PSCs that not only achieved a PCE of 2..39%but also maintained 95%of their initial efficiency after 2.00 h of continuous light exposure without *** findings underscore the effectiveness of a phase-pure 2./3D heterostructure-terminated film in inhibiting phase transitions passivating the iodide anion vacancy defects,facilitating the charge carrier extraction,and boosting the performance of optoelectronic devices.

关键词： Phase-pure 2. perovskite 2./3D heterostructure Type-II energy alignment Carrier dynamic FAPbI_(3)

电场极化条件对石英玻璃的电致二阶非线性光学效应的影响

在线全文

学校读者我要写书评

暂无评论

中国激光 1998年第1期25卷 56-60页

作者：陈红兵徐建华刘丽英余保龙朱从善陆兴泽干福熹中国科学院上海光机所复旦大学物理系

报道了电场极化条件对石英玻璃的电致二阶非线性光学效应的影响的研究结果。通过实验发现，石英玻璃经较高温度下的电场极化作用所产生的二次谐波发生与极化温度、极化电压具有相关性，并表现出一定的规律性：在一定的极化电压下，二次... 详细信息

报道了电场极化条件对石英玻璃的电致二阶非线性光学效应的影响的研究结果。通过实验发现，石英玻璃经较高温度下的电场极化作用所产生的二次谐波发生与极化温度、极化电压具有相关性，并表现出一定的规律性：在一定的极化电压下，二次谐波强度在某一适中的温度下达到极值；在一定的极化温度下，二次谐波强度随极化电压的增大而逐渐增强，并渐趋饱和。根据玻璃的电致二阶非线性极化的“偶极子取向”模型，解释了实验结果。

关键词：石英玻璃电场极化二次谐波发生偶极子取向

Exploration of a Sequential Gp1.0-Gp1.5 Immunization Regimen with Heterologous Envs to Induce a Protective Cross-Reactive HIV Neutralizing Antibody Response In Non-human Primates

在线全文

学校读者我要写书评

暂无评论

Virologica Sinica 2021年第4期36卷 784-795页

作者： Xiangqing Ding Kangli Cao Jing Wang Yanmin Wan Qinyun chen Yanqin Ren Yongtang {1. Mingzhao {2. renrong Tian Wenjun Wang chen Zhao Xiaoyan Zhang Jianqing Xu shanghai Public Health Clinical Center and Institutes of Biomedical Sciences Key Laboratory of Medical Molecular VirologyShanghai Medical CollegeFudan UniversityShanghai 201508China Key Laboratory of Animal Models and Human Disease Mechanisms of the Chinese Academy of Sciences and Yunnan Province Kunming Institute of ZoologyChinese Academy of SciencesKunming 650223China university of Chinese Academy of Sciences Beijing 100049China Key Laboratory of Infection and Immunity Institute of BiophysicsChinese Academy of SciencesBeijing 100101China College of Life Sciences University of the Chinese Academy of SciencesBeijing 100101China

Raising a heterologous tier 2.neutralizing antibody(nAb)response remains a daunting task for HIV vaccine *** this study,we explored the utility of diverse HIV-1.envelope(Env)immunogens in a sequential immunization scheme as a solution to this *** exploration stemmed from the rationale that gp1.5,a membrane-bound truncation form of HIV Env,may facilitate the focusing of induced antibody response on neutralizing epitopes when sequentially combined with the soluble gp1.0 form as immunogens in a prime-boost *** first showed that gp1.0 DNA prime-gp1.5 Tiantan vaccinia(TV)boost likely represents a general format for inducing potent nAb response in ***,when examined in rhesus macaque,this modality showed little *** improve the efficacy,we extended the original modality by adding a strong protein boost,namely native-like SOSIP.664 trimer displayed on ferritin-based nanoparticle(NP),which was generated by a newly developed click *** resulting three-immunization regimen succeeded in eliciting tier-2.nAb response with substantial breadth when implemented in rhesus macaque over a short 8-week ***,the elicited nAb response was able to effectively contain viremia upon a heterologous SHIV ***,our studies highlighted that diversification of Env immunogens,in both types and formulations,under the framework of a sequential immunization scheme might open new opportunity toward HIV vaccine development.

关键词： Human immunodeficiency virus type 1.HIV-1. Vaccine Broadly neutralizing antibodies(bnAbs) Sequential immunization Native-like Env trimers Nanoparticle