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Manipulating Nonsequential Double Ionization of Argon Atoms via Orthogonal Two-Color Field

Chinese physics Letters 2022年第9期39卷 10-16页

作者： Yingbin Li Lingling Qin Aihua Liu Ke Zhang Qingbin Tang Chunyang Zhai Jingkun Xu Shi Chen Benhai Yu Jing Chen College of Physics and Electronic Engineering Xinyang Normal UniversityXinyang 464000China Institute of Atomic and Molecular Physics Jilin UniversityChangchun 130012China School of Physics and Wuhan National Laboratory for Optoelectronics Huazhong University of Science and TechnologyWuhan 430074China Center for Applied Physics and Technology HEDPSand School of PhysicsPeking UniversityBeijing 100871China Institute of Applied Physics and Computational Mathematics Beijing 100088China Shenzhen Key Laboratory of Ultraintense Laser and Advanced Material Technology Center for Advanced Material Diagnostic Technologyand College of Engineering PhysicsShenzhen Technology UniversityShenzhen 518118China State Key Laboratory of Transient Optics and Photonics Chinese Academy of SciencesXi’an 710119China

Using a three-dimensional classical ensemble model,we investigate the dependence of relative frequency and relative initial phase for nonsequential double ionization(NSDI)of atoms driven by orthogonal two-color(OTC)*** findings reveal that the NSDI probability is clearly dependent on the relative initial phase of OTC fields at different relative *** inversion analysis results indicate that adjusting the relative frequency of OTC fields helps control returning probability and flight time of the first ***,manipulating the relative frequency at the same relative initial phases can vary the revisit time of the recolliding electron,leading that the emission direction of Ar^(2+)ions is explicitly dependent on the relative frequency.

关键词： initial ensemble finding

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Self-energy corrections to zone-edge acoustic phonons in monolayer and bilayer WS2

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Physical Review B 2024年第12期109卷 L121202-L121202页

作者： Qixing Wang Yu Li Huang Qi Zhang Jiayu Ma Xin Luo Yun-Mei Li Department of Physics College of Physical Science and Technology Xiamen University Xiamen 361005 China Joint School of National University of Singapore and Tianjin University International Joint Institute of Tianjin University Fuzhou 350207 China School of Physics and Key Laboratory of MEMS of the Ministry of Education Southeast University Nanjing 211189 China State Key Laboratory of Optoelectronic Materials and Technologies Guangdong Provincial Key Laboratory of Magnetoelectric Physics and Devices Centre for Physical Mechanics and Biophysics School of Physics Sun Yat-sen University Guangzhou 510275 China

The self-energy corrections to phonons have mostly been observed for modes with zone-center (q=0) wave vectors. Here, we investigated the self-energy corrections to phonons in ionic-liquid-gated semiconductors, i.e., monolayer and bilayer WS2, experimentally. Apart from the previously observed A1g(Γ) mode renormalization by Raman spectroscopy, we additionally discovered that the zone-edge longitudinal acoustic (LA(M)) phonon also softened under finite electron doping. This observed renormalization effect arises from the LA(M) phonon-assisted electron scattering between the K and Q valleys in the conduction bands, indicating the nonadiabatic self-energy corrections dominate, different from the A1g(Γ) mode. The self-energy corrections of the two modes both depend on layer configurations. Our findings suggest that WS2 and other similar two-dimensional materials are intriguing playgrounds to study the electron-phonon interactions and valley-related physics.

关键词： Acoustic phonons Electron-phonon coupling Layered crystals Semiconductors Wide band gap systems Density functional theory Raman spectroscopy

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Estimating the grain size of microgranular material using laser-induced breakdown spectroscopy combined with machine learning algorithms

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Plasma science and technology 2024年第5期26卷 129-137页

作者：张朝李亚举杨光辉曾强李小龙陈良文钱东斌孙对兄苏茂根杨磊张少锋马新文 Key Laboratory of Atomic and Molecular Physics and Functional Materials of Gansu Province College of Physics and Electronic EngineeringNorthwest Normal UniversityLanzhou 730070People’s Republic of China Advanced Energy Science and Technology Guangdong LaboratoryHuizhou 516000People’s Republic of China Institute of Modern Physics Chinese Academy of SciencesLanzhou 730000People’s Republic of China University of the Chinese Academy of Sciences Beijing 100049People’s Republic of China School of Nuclear Science and Technology University of the Chinese Academy of SciencesBeijing 100049People’s Republic of China

Recent work has validated a new method for estimating the grain size of microgranular materials in the range of tens to hundreds of micrometers using laser-induced breakdown spectroscopy(LIBS).In this situation,a piecewise univariate model must be constructed to estimate grain size due to the complex dependence of the plasma formation environment on grain *** the present work,we tentatively construct a unified calibration model suitable for LIBS-based estimation of those grain ***,two unified multivariate calibration models are constructed based on back-propagation neural network(BPNN)algorithms using feature selection strategies with and without considering prior *** detailed analysis of the performances of the two multivariate models,it was found that a unified calibration model can be successfully constructed based on BPNN algorithms for estimating the grain size in the range of tens to hundreds of *** was also found that the model constructed with a priorguided feature selection strategy had better prediction *** study has practical significance in developing the technology for material analysis using LIBS,especially when the LIBS signal exhibits a complex dependence on the material parameter to be estimated.

关键词： laser-induced breakdown spectroscopy machine learning randomly packed microgranular materials

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Data Glove Based on Flexible Fiber Optic Sensor for Gesture Capture 2

Data Glove Based on Flexible Fiber Optic Sensor for Gesture ...

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2nd International Conference on advanced Optics and Photonics Research in Engineering, AOPR 2022

作者： Yu, Hui Zheng, Daifu Liu, Yun Chen, Shimeng School of Physics Dalian University of Technology Liaoning116024 China School of Optoelectronic Engineering and Instrumentation Science Dalian University of Technology Liaoning116024 China Marine Engineering College Dalian Maritime University Liaoning116026 China

The development of data glove is very rapid, and it is widely used in the field of human-robot interaction. Flexible optical fiber sensors are widely used in data gloves. Hereby, a flexible data glove based on space-division multiplexed flexible optical fiber sensor is proposed. The fiber exhibits high optical transmission stability and good sensing performance under deformation. Our data glove accurately recognizes and tracks gestures, and then guide the manipulator to make the same gesture. It is believed that the application of data glove will be more widespread. © Published under licence by IOP Publishing Ltd.

关键词： Human robot interaction

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Three-Layer Matrix Ring Data Center Interconnect Based on FSO technology

Three-Layer Matrix Ring Data Center Interconnect Based on FS...

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2024 Asia Communications and Photonics Conference, ACP 2024 and International Conference on Information Photonics and Optical Communications, IPOC 2024

作者： Su, Jianning Kong, Qian Lu, Xiaowei Liu, Liming Yi, Zichuan Pan, Xinjian School of Electronic and Information Engineering University of Electronic Science and Technology of China Zhongshan Institute Zhongshan528402 China College of Physics and Optoelectronic Engineering Shenzhen University SZU Shenzhen 518060 China Optoelectronic Devices and Systems of Ministry of Education and Guangdong Province Shenzhen Key Lab of Micro-Nano Photonic Information Technology State Key Laboratory of Radio Frequency Heterogeneous Integration College of Physics and Optoelectronic Engineering Shenzhen University Shenzhen518060 China

This paper proposes a three-layer grid matrix ring data center interconnect using Free Space Optical Communication as the inter-layer connection technology, which simplifies the wiring complexity and offers more diver... 详细信息

ISBN: (纸本)9798350379266

关键词： Data communication systems

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Create Rich Oxygen Defects of Unique Tubular Hierarchical Molybdenum Dioxide to Modulate Electron Transfer Rate for Superior High-Energy Metal-Ion Hybrid Capacitor

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Energy & Environmental Materials 2023年第3期6卷 193-204页

作者： Heng Zhang Jinggao Wu Zhuo Zou Youcun Bai Chao Wu Qingxin Zeng Feng Liu Wei Shen Jian Jiang Chang Ming Li Institute of Clean Energy and Advanced Materials School of Materials and energySouthwest UniversityChongqing 400715China Chongqing Key Laboratory for Advanced Materials and Technologies of Clean Energies Chongqing 400715China Key Laboratory of Rare Earth Optoelectronic Materials&Devices College of Chemistry and Materials EngineeringHuaihua UniversityHuaihua 418000China School of Chemistry and Chemical Engineering Chongqing UniversityChongqing 401331China Institute of Materials Science and Devices School of Materials Science and EngineeringSuzhou University of Science and TechnologySuzhou 215011China

Metal-ion capacitors could merit advantages from both batteries and capacitors,but they need to overcome the severe restrictions from their sluggish reaction kinetics of the battery type electrode and low specific capacitance of capacitor type electrode for both high energy and power ***,we use the Kirkendall effect for the first time to synthesize unique tubular hierarchical molybdenum dioxide with encapsulated nitrogen-doped carbon sheets while in situ realizing phosphorus-doping to create rich oxygen vacancies(P-MoO_(2-x)@NP-C)as a sodium-ion *** and theoretical analysis confirm that the P-doping introduced oxygen defects can partially convert the high-bond-energy Mo–O to low-bond-energy Mo–P,resulting in a low oxidation state of molybdenum for enhanced surface reactivity and rapid reaction *** as-prepared P-MoO_(2-x)@NP-C as an ion-battery electrode is further used to pair active N-doped carbon nanosheet(N-C-A)electrode for Na-ion hybrid capacitor,delivering excellent performance with an energy density of 140.3 Wh kg^(−1),a power density of 188.5 W kg^(−1)and long stable life in non-aqueous solution,which ranks the best among all reported MoO x-based hybrid capacitors.P-MoO_(2-x)@NP-C is also used to fabricate a zinc-ion hybrid capacitor,also accomplishing a remarkable energy density of 43.8 Wh kg^(−1),a power density of 93.9 W kg^(−1),and a long stable life@2A g^(−1)of 32000 cycles in aqueous solutions,solidly verifying its universal *** work not only demonstrates an innovative approach to synthesize high-performance metal ion hybrid capacitor materials but also reveals certain scientific insights into electron transfer enhancement mechanisms.

关键词： molybdenum dioxide oxygen vacancies phosphorus incorporation sodium-ion hybrid capacitor Zinc-ion hybrid capacitor

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J-TEXT achievements in turbulence and transport in support of future device/reactor

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Plasma science and technology 2024年第11期26卷 1-21页

作者： Zhipeng CHEN Zhangsheng HUANG Min JIANG Ting LONG Lu WANG Weixin GUO Zhoujun YANG Hai LIU Tao LAN Kaijun ZHAO Yuhong XU Rui KE Youwen SUN Hanhui LI Wen HE Ge ZHUANG Yuejiang SHI Wulyu ZHONG Yonghua DING Yunfeng LIANG Wenjing TIAN Xin XU Guodong ZHANG M.S.HUSSAIN Patrick H.DIAMOND State Key Laboratory of Advanced Electromagnetic Technology International Joint Research Laboratory of Magnetic Confinement Fusion and Plasma PhysicsSchool of Electrical and Electronic EngineeringHuazhong University of Science and TechnologyWuhan 430074People’s Republic of China Southwestern Institute of Physics Chengdu 610041People’s Republic of China Institute of Fusion Science School of Physical Science and TechnologySouthwest Jiaotong UniversityChengdu 610031People’s Republic of China Department of Plasma Physics and Fusion Engineering University of Science and Technology of ChinaHefei 230026People’s Republic of China School of Nuclear Science and Engineering East China University of TechnologyNanchang 330013People’s Republic of China Institute of Plasma Physics Chinese Academy of SciencesHefei 230031People’s Republic of China College of Electrical Engineering&New Energy China Three Gorges UniversityYichang 443002People’s Republic of China Department of Engineering and Applied Physics School of Physical SciencesUniversity of Science and Technology of ChinaHefei 230026People’s Republic of China ENN Science and Technology Development Co.Ltd. and Hebei Key Laboratory of Compact FusionLangfang 065001People’s Republic of China Forschungszentrum Jülich GmbH Institut für Energie-und Klimaforschung-PlasmaphysikPartner of the Trilateral Euregio Cluster(TEC)Jülich 52425Germany Tsinghua University Beijing 100084People’s Republic of China School of Nuclear Science and Technology University of Science and Technology of ChinaHefei 230026People’s Republic of China Center for Astrophysics and Space Sciences University of California San DiegoLa Jolla CA 92093United States of America

Following the reconstruction of the TEXT tokamak at Huazhong University of science and technology in China, renamed as J-TEXT, a plethora of experimental and theoretical investigations has been conducted to elucidate the intricacies of turbulent transport within the tokamak configuration. These endeavors encompass not only the J-TEXT device's experimental advancements but also delve into critical issues pertinent to the optimization of future fusion devices and reactors. The research includes topics on the suppression of turbulence, flow drive and damping, density limit, non-local transport, intrinsic toroidal flow, turbulence and flow with magnetic islands, turbulent transport in the stochastic layer, and turbulence and zonal flow with energetic particles or helium ash. Several important achievements have been made in the last few years, which will be further elaborated upon in this comprehensive review.

关键词： J-TEXT tokamak turbulence transport flow

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New extended method for ψ' scaling function of inclusive electron scattering

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science China(physics,Mechanics & Astronomy) 2023年第10期66卷 53-61页

作者： Lei Wang Qinglin Niu Jinjuan Zhang Jian Liu Zhongzhou Ren School of Physics Science and Engineering Tongji UniversityShanghai 200092China College of Science China University of Petroleum(East China)Qingdao 266580China College of Electronic and Information Engineering Shandong University of Science and TechnologyQingdao 266590China Laboratory of High Precision Nuclear Spectroscopy Insititute of Modern PhysicsChinese Academy of SciencesLanzhou 730000China Guangxi Key Laboratory of Nuclear Physics and Nuclear Technology Guangxi Normal UniversityGuilin 541004China Key Laboratory of Advanced Micro-Structure Materials Ministry of EducationShanghai 200092China

Scaling analyses have been successfully applied to study the inclusive electron scattering(e, e') over the past few decades. In this study, we utilize the ψ' scaling function in momentum space to analyze the(e, e') cross sections, where the nucleon momentum distributions are derived from self-consistent mean-field calculations. By further introducing the energy and momentum conservation in the scaling analysis, an improved ψ'scaling function is proposed to investigate the high-momentum part of the momentum distributions. Using the proposed scaling function, we systematically explore the effects of the nucleon-nucleon short-range correlation(NN-SRC) on the(e, e') cross sections. From the experimental(e, e') data, the NN-SRC strength is further extracted within the framework of the improved ψ'scaling function. The studies in this paper offer a new method to investigate the nucleon momentum distributions and the NN-SRC effects in nuclei.

关键词： inclusive electron scattering scaling analysis nucleon momentum distribution nucleon-nucleon correlation

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Unraveling the impacts of intermolecular interaction on morphology evolution for highly efficient organic solar cells and modules

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science China Chemistry 2025年第1期68卷 264-272页

作者： Xueqing Ma Yingying Cheng Yuqiang Liu Xinming Zheng Guangliu Ran Hongxiang Li Xinyue Cui Andong Zhang Wenkai Zhang Pei Cheng Wenchao Huang Zhishan Bo Beijing Key Laboratory of Energy Conversion and Storage Materials College of ChemistryBeijing Normal UniversityBeijing 100875China College of Textiles and Clothing State Key Laboratory of Bio-fibers and Eco-textilesQingdao UniversityQingdao 266071China Key State Laboratory of Advanced Technology for Materials Synthesis and Processing School of Materials Science and EngineeringWuhan University of TechnologyWuhan 430070China Department of Physics and Applied Optics Beijing Area Major Laboratory Center for Advanced Quantum StudiesBeijing Normal UniversityBeijing 100875China State Key Laboratory of Polymer Materials Engineering College of Polymer Science and EngineeringSichuan UniversityChengdu 610065China

Understanding the effect of intermolecular interaction on the growth dynamic of active layers is critical for advancing organic solar cells(OSCs).However,the diverse structure of donors and acceptors makes the research *** with customizable structures and properties could simplify this ***,we meticulously tailor two additives of 3,4-ethylenedioxythiophene(EDOT)and 2,5-dibromo-3,4-ethylenedioxythiophene(DBEDOT),possessing distinct intermolecular interaction features to elaborate the inherent *** is found that varied interaction strengths can alter film formation *** enhanced intermolecular interaction between the DBEDOT and non-fullerene acceptor BTP-e C9-4F results in pre-aggregation and longer crystallization duration of BTP-e C9-4F,facilitating the formation of films with compact molecular packing and decent phase ***,exciton dissociation and charge transport become more ***,devices processed with DBEDOT exhibit a remarkable power conversion efficiency of 19.35%in small-area OSCs and 14.11%in bladecoated 5 cm×5 cm organic solar ***,OSCs can maintain 80%of their initial efficiency after continuous annealing at 85℃for over 2,100 h.

关键词： organic solar cell non-fullerene acceptor film growth molecular packing intermolecular interaction

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Identification of intrinsic vacancies and polarization effect on ternary halo-sulfur-bismuth compounds for efficient CO_(2) photoreduction under near-infrared light irradiation

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Carbon Energy 2024年第10期6卷 277-288页

作者： Jun Li Qingqing Chai Ranran Niu Wenfeng Pan Zhiquan Chen Liang Wang Kai Wang Zhongyi Liu Yifeng Liu Yao Xiao Bin Liu Henan Institute of Advanced Technology State Key Laboratory of Coking Coal Resources Green ExploitationCollege of ChemistryZhengzhou UniversityZhengzhouChina College of Basic Sciences Zhengzhou University of TechnologyZhengzhouChina Hubei Nuclear Solid Physics Key Laboratory Department of PhysicsWuhan UniversityWuhanChina School of Environmental and Chemical Engineering Shanghai UniversityShanghaiChina College of Urban and Environmental Sciences Hubei Normal UniversityHuangshiChina College of Chemistry and Materials Engineering Wenzhou UniversityWenzhouChina Department of Materials Science and Engineering City University of Hong KongHong Kong SARChina

Ternary halo-sulfur bismuth compound Bi_(19)X_(3)S_(27)(X=Cl,Br,I)with distinct electronic structure and full-spectrum light-harvesting properties show great application potential in the CO_(2) photoreduction ***,the relationship between photocatalytic CO_(2) reduction performance and the function of halogens in Bi_(19)X_(3)S_(27) is still poorly ***,a series of Bi_(19)X_(3)S_(27) nanorod photocatalysts with intrinsic X and S dual vacancies were developed,which showed significant near-infrared(NIR)light *** types and concentrations of intrinsic vacancies were confirmed and quantified by positron annihilation spectrometry and electron spin resonance *** results showed that Br atoms and intrinsic vacancies(dual Br-S)in Bi_(19)Br_(3)S_(27) could greatly enhance the internal polarized electric field and improve the transfer and separation of photogenerated carriers compared with Bi19Cl3S27 and *** calculations revealed that Br atoms in Bi_(19)Br_(3)S_(27) could facilitate CO_(2) adsorption and activation and decrease the formation energy of reactive *** Bi_(19)X_(3)S_(27) nanorods,Bi_(19)Br_(3)S_(27) nanorods revealed the highest CO_(2) photoreduction activity with CO yield rate of 28.68 and 2.28μmol gcatalyst^(−1) h^(−1) with full-spectrum and NIR lights,*** work presents an atomic understanding of the intrinsic vacancies and halogen-mediated CO_(2) photoreduction mechanism.

关键词： Bi_(19)X_(3)S_(27) CO_(2)photoreduction near-infrared light photocatalysis vacancy

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