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Acceleration of bidirectional sulfur conversion kinetics and inhibition of lithium dendrites growth via a“ligand-induced”transformation strategy

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nano Research 2023年第7期16卷 9496-9506页

作者： Wei Zhou Minzhe Chen Dengke Zhao Jiacheng Dan Chuheng Zhu Wen Lei Li-Jun Ma nan wang Xinghua Liang Ligui Li new Energy Research Institute School of Environment and EnergySouth China University of TechnologyHigher Education Mega CenterGuangzhou 510006China The State Key Laboratory of Refractories and Metallurgy Wuhan University of Science and TechnologyWuhan 430081China Key Laboratory of Theoretical Chemistry of Environment Ministry of Education School of Chemistry and EnvironmentSouth China Normal UniversityGuangzhou 510631China Siyuan laboratory Guangzhou Key Laboratory of Vacuum Coating Technologies and New Energy MaterialsDepartment of PhysicsJinan UniversityGuangzhou 510632China Guangxi Key Laboratory of Automobile Components and Vehicle Technology Guangxi University of Science and TechnologyLiuzhou 545006China

The introduction of materials with dual-functionalities,i.e.,the catalytic(adsorption)features to inhibit shuttle effects at the cathode side,and the capability to facilitate homogenous Li-ion fluxes at the anode side,is a promising strategy to realize high performance lithium-sulfur batteries(LSBs).Herein,a facile and rational organic“ligand-induced”(trimesic acid(TMA))transformation tactic is proposed,which achieves the regulation of electronic performance and d-band center of bimetallic oxides(niFe_(2)O_(4))to promote bidirectional sulfur conversion kinetics and stabilize the Li plating/striping during the charge/discharge *** battery assembled with niFe_(2)O_(4)-TMA modified separator exhibits a remarkable initial specific capacity of 1.76.6 mAh·g^(-1.at 0.1.C,outstanding rate properties(661.1.mAh·g^(-1.at 8.0 C),and excellent cycling ***“ligand-induced”transformation tactic proposed in this work will open a whole new possibility for tuning the electronic structure and d-band center to enhance the performance of LSBs.

关键词： organic“ligand-induced”transformation niFe_(2)O_(4)-trimesic acid(TMA) bidirectional sulfur conversion high sulfur loading

Molecular beam epitaxy growth of monolayer hexagonal MnTe_(2)on Si(1.1.substrate

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Chinese physics B 2021年第12期30卷 142-147页

作者： S Lu K Peng P D wang A X Chen W Ren X W Fang Y Wu Z Y Li H F Li F Y Cheng K L Xiong J Y Yang J Z wang S A Ding Y P Jiang) L wang Q Li F S Li L F Chi Institute of Functional nano&Soft Materials(FUnSOM) Soochow UniversitySuzhou 215123China Vacuum Interconnected nanotech Workstation(nano-X) Suzhou Institute of Nano-Tech and Nano-Bionics(SINANO)Chinese Academy of Sciences(CAS)Suzhou 215123China Key Laboratory of Polar Materials and Devices(MOE) Department of ElectronicSchool of Physics and Electronic ScienceEast China Normal UniversityShanghai 200241China school of Physical Science and Technology Southwest UniversityChongqing 400715China school of nano-Tech and nano-Bionics University of Science and Technology of ChinaHefei 230026China

Monolayer MnTe_(2)stabilized as 1.T structure has been theoretically predicted to be a two-dimensional(2 D)ferromagnetic metal and can be tuned via strain *** is no naturally van der Waals(vdW)layered MnTe_(2)bulk,leaving mechanical exfoliation impossible to prepare monolayer MnTe_(2).Herein,by means of molecular beam epitaxy(MBE),we successfully prepared monolayer hexagonal MnTe_(2)on Si(1.1.under Te rich *** reflection high-energy electron diffraction(RHEED)and low-energy electron diffraction(LEED)patterns suggest the monolayer is atomically flat without surface *** valence state of Mn^(4+)and the atom ratio of([Te]:[Mn])further confirm the MnTe_(2)*** tunneling spectroscopy(STS)shows the hexagonal MnTe_(2)monolayer is a semiconductor with a large bandgap of~2.78 *** valence-band maximum(VBM)locates at theΓpoint,as illustrated by angle-resolved photoemission spectroscopy(ARPES),below which three hole-type bands with parabolic dispersion can be *** successful synthesis of monolayer MnTe_(2)film provides a new platform to investigate the 2D magnetism.

关键词： molecular beam epitaxy hexagonal MnTe_(2) band structure

Photocurrent density and electrical properties of Bi0.5na0.5TiO3–Bani0.5nb0.5O3 ceramics

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Journal of Advanced Ceramics 2021年第5期10卷 1119-1128页

作者： Mingqiang ZHOnG Qin FEnG Changlai YUAn Xiao LIU Baohua ZHU Liufang MEnG Changrong ZHOU Jiwen XU Jiang wang Guanghui RAO Guangxi Key Laboratory of Information Materials Guilin University of Electronic Technology College of Material Science and engineering Guilin University of Electronic Technology school of Resources Environment and Materials Guangxi University Nanning 530004 China dInstitute of Physics Chinese Academy of Sciences

In this work,the （1.x）Bi0.5na0.5Ti O3–x Ba ni0.5nb0.5O3（BnT–Bnn;0.00≤x≤0.20）ceramics were prepared via a high-temperature solid-state *** crystalline structures,photovoltaic effect,and electrical properties of the ceramics were *** to X-ray diffraction,the system shows a single perovskite *** samples show the normal ferroelectric *** the increase of Bnn content,the remnant polarization （Pr） and coercive field （Ec）decrease *** optical band gap of the samples narrows from 3.1. to 2.27 e *** conductive species of grains and grain boundaries in the ceramics are ascribed to the double ionized oxygen *** open-circuit voltage (Voc) of～1..7 V and short-circuit current (Jsc) of～1.50 n A/cm2are obtained in the 0.95BnT–0.05Bnn ceramic under 1.sun illumination （AM1.5G,1.0 m W/cm2）.A larger Vocof 23 V and a higher Jscof 5500 n A/cm2are achieved at the poling field of 60 k V/cm under the same light *** study shows this system has great application prospects in the photovoltaic field.

关键词： Bi0.5na0.5TiO3-Bani0.5nb0.5O3 ferroelectric semiconductors optical band gap photovoltaic effect impedance spectroscopy

Bulk superconductivity in the Dirac semimetal TlSb

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Science china({1.,Mechanics & Astronomy) 2021年第4期64卷 96-103页

作者： YuXing Zhou Bin Li ZheFeng Lou HuanCheng Chen Qin Chen BinJie Xu ChunXiang Wu JianHua Du JinHu Yang HangDong wang MingHu Fang Department of physics Zhejiang UniversityHangzhou 310027China new Energy Technology engineering Laboratory of Jiangsu Province School of ScienceNanjing University of Posts and TelecommunicationsNanjing 210023China Department of Applied physics China Jiliang UniversityHangzhou 310018China Department of physics Hangzhou Normal UniversityHangzhou 310036China Collaborative Innovation Center of Advanced Microstructures Nanjing UniversityNanjing 210093China

A feasible strategy for realizing the Majorana fermions is searching for a simple compound with both bulk superconductivity and Dirac surface *** this paper,we perform calculations of electronic band structure,the Fermi surface,and the surface states,and measure the resistivity,magnetization,and specific heat of a TlSb compound with a CsCl-type *** band structure calculations show that TlSb is a Dirac semimetal when spin-orbit coupling is *** is first determined to be a type-Ⅱsuperconductor with T_(c)=4.38 K,Hc1.0)=1.8 Oe,H_(c2)(0)=1.1. T,andκ_(GL)=*** also confirm that TlSb is a moderately coupled s-wave *** we cannot determine the band near the Fermi level EF that is responsible for superconductivity,its coexistence with topological surface states implies that the TlSb compound may be a simple material platform to realize the fault-tolerant quantum computations.

关键词： s-wave superconductor Dirac semimetal topological superconductor

Electron-ion collider in china

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Frontiers of physics 2021年第6期16卷 1-78页

作者： Daniele PAnderle Valerio Bertone Xu Cao Lei Chang ningbo Chang Gu Chen Xurong Chen Zhuojun Chen Zhufang Cui Lingyun Dai Weitian Deng Minghui Ding Xu Feng Chang Gong Longcheng Gui Feng-Kun Guo Chengdong Han Jun He Tie-Jiun Hou Hongxia Huang Yin Huang KrešImir KumeričKi LPKaptari Demin Li Hengne Li Minxiang Li Xueqian Li Yutie Liang Zuotang Liang Chen Liu Chuan Liu Guoming Liu Jie Liu Liuming Liu Xiang Liu Tianbo Liu Xiaofeng Luo Zhun Lyu Boqiang Ma Fu Ma Jianping Ma Yugang Ma Lijun Mao Cédric Mezrag HervéMoutarde Jialun Ping Sixue Qin Hang Ren Craig DRoberts Juan Rojo Guodong Shen Chao Shi Qintao Song Hao Sun PawełSznajder Enke wang Fan wang Qian wang Rong wang Ruiru wang Taofeng wang Wei wang Xiaoyu wang Xiaoyun wang Jiajun Wu Xinggang Wu Lei Xia Bowen Xiao Guoqing Xiao Ju-Jun Xie Yaping Xie Hongxi Xing Hushan Xu nu Xu Shusheng Xu Mengshi Yan Wenbiao Yan Wencheng Yan Xinhu Yan Jiancheng Yang Yi-Bo Yang Zhi Yang Deliang Yao Zhihong Ye Peilin Yin C-PYuan Wenlong Zhan Jianhui Zhang Jinlong Zhang Pengming Zhang Yifei Zhang Chao-Hsi Chang Zhenyu Zhang Hongwei Zhao Kuang-Ta Chao Qiang Zhao Yuxiang Zhao Zhengguo Zhao Liang Zheng Jian Zhou Xiang Zhou Xiaorong Zhou Bingsong Zou Liping Zou Guangdong Provincial Key Laboratory of nuclear Science Institute of Quantum MatterSouth China Normal UniversityGuangzhou 510006China IRFU CEAUniversitéParis-SaclayF-91191 Gif-sur-YvetteFrance Institute of Modern physics Chinese Academy of SciencesLanzhou 730000China University of Chinese Academy of Sciences Beijing 100049China nankai University Tianjin 300071China Xinyang normal University Xinyang 464000China school of {1. and Materials Science Guangzhou UniversityGuangzhou 510006China Hunan University Changsha 410082China nanjing University Nanjing 210093China Huazhong University of Science and Technology Wuhan 430074China European Centre for Theoretical Studies in nuclear physics and Related Areas(ECT*)and Fondazione Bruno Kessler Villa TambosiStrada delle Tabarelle 286I-38123 Villazzano(TN)Italy school of {1. Peking UniversityBeijing 100871China Hunan normal University Changsha 410081China Institute of Theoretical physics Chinese Academy of SciencesBeijing 100190China nanjing normal University Nanjing 210023China Department of physics College of SciencesNortheastern UniversityShenyang 110819China Southwest Jiaotong University Chengdu 610000China Department of physics Faculty of ScienceUniversity of ZagrebBijenička c.3210000 ZagrebCroatia Bogoliubov Laboratory of Theoretical physics Joint Institute for Nuclear ResearchDubna 141980Russia school of {1. and Microelectronics Zhengzhou UniversityZhengzhou 450001China Lanzhou University Lanzhou 730000China Key Laboratory of Particle physics and Particle Irradiation(MOE) Shandong UniversityQingdao 266237China Key Laboratory of Quark and Lepton physics(MOE)and Institute of Particle physics Central China Normal UniversityWuhan 430079China school of {1. Southeast UniversityNanjing 211189China Key Laboratory of nuclear physics and Ion-beam Application(MOE) Institute of Modern PhysicsFudan UniversityShanghai 200433China Shanghai Institute of Applied physics Chinese Academy of SciencesShanghai 201800China Depa

Lepton scattering is an established ideal tool for studying inner structure of small particles such as nucleons as well as *** a future high energy nuclear physics project,an Electron-ion collider in{1.(EicC)has been *** will be constructed based on an upgraded heavy-ion accelerator,High Intensity heavy-ion Accelerator Facility(HIAF)which is currently under construction,together with a new electron *** proposed collider will provide highly polarized electrons(with a po-larization of 80%)and protons(with a polarization of 70%)with variable center of mass energies from 1. to 20 GeV and the luminosity of(2–3)×1.33 cm^(−2)·s^(−1..Polarized deuterons and Helium-3,as well as unpolarized ion beams from Carbon to Uranium,will be also available at the *** main foci of the EicC will be precision measurements of the structure of the nucleon in the sea quark region,including 3D tomography of nucleon;the partonic structure of nuclei and the parton interaction with the nuclear environment;the exotic states,especially those with heavy flavor quark *** addition,issues fundamental to understanding the origin of mass could be addressed by measurements of heavy quarkonia near-threshold production at the *** order to achieve the above-mentioned physics goals,a hermetical detector system will be constructed with cutting-edge *** document is the result of collective contributions and valuable inputs from experts across the *** EicC physics program complements the ongoing scientific programs at the Jefferson Laboratory and the future EIC project in the United *** success of this project will also advance both nuclear and particle physics as well as accelerator and detector technology in{1..

关键词： electron ion collider nucleon structure nucleon mass exotic hadronic states quantum chromodynamics 3D-tomography helicity transverse momentum dependent parton distribution generalized parton distribution energy recovery linac polarization spin rotator

慢性脑卒中伴严重偏瘫患者经胼胝体相连皮质功能连接异常对运动恢复的影响

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中国康复医学杂志 2024年第8期39卷 1130-1142页

作者：刘灵孙莉敏王鹤玮宁瑞鹏尹大志余秋蓉李哲宇沈逸凡袁彧健马天宇卢杉刘志超范明霞华东师范大学物理与电子科学学院上海市磁共振重点实验室上海市200062 复旦大学附属华山医院康复医学科华东师范大学心理与认知科学学院上海市长宁区精神卫生中心上海交通大学医学院附属瑞金医院放射科上海交通大学医学院医学技术学院

目的:探究慢性脑卒中重度偏瘫患者的经胼胝体连接脑区的功能连接改变及其与上肢运动功能恢复的相关性。方法:收集25例慢性脑卒中重度偏瘫患者康复干预1.月前后和32例健康受试者的静息态功能磁共振成像数据。利用自动解剖标记图谱(anmto... 详细信息

目的:探究慢性脑卒中重度偏瘫患者的经胼胝体连接脑区的功能连接改变及其与上肢运动功能恢复的相关性。方法:收集25例慢性脑卒中重度偏瘫患者康复干预1.月前后和32例健康受试者的静息态功能磁共振成像数据。利用自动解剖标记图谱(anmtomical automatic labeling,AAL)识别与胼胝体直接相连的32对同源皮质脑区并进行感兴趣区水平的功能连接分析,比较这些脑区的患侧半球内、健侧半球内以及半球间功能连接的组间、组内差异,并进一步将功能连接与患者上肢运动功能评分(Fugl-Meyer assessment of upper extremity,FMA-UE)进行相关性分析。结果:与健康对照组相比,卒中组康复干预前和干预后半球内总功能连接差异均不显著,而半球间总功能连接显著减弱(P1.FDR校正);进一步分析发现,同源脑区比非同源脑区的半球间功能连接减弱更加明显,涉及前额叶、感觉运动区、顶叶、颞叶和枕叶。与干预前相比,卒中组干预后的患侧内侧眶回与健侧内侧额回间的功能连接显著增强(P1.FDR校正)。相关性分析显示,卒中组干预前半球间总功能连接与干预前FMA-UE评分显著正相关(r=0.590;P=0.004)。有5条半球间功能连接与干预前FMA-UE评分显著正相关(P2条为非同源脑区间连接,分别是患侧外侧眶回与健侧额下回眶部之间的连接、患侧顶下小叶与健侧缘上回之间的连接。此外,卒中组康复干预前有3条非同源脑区半球间连接与FMA-UE评分变化量显著正相关(P<0.05),涉及初级运动皮质、初级感觉皮质、腹侧运动前区和颞上回。卒中组干预前后功能连接变化量与FMA-UE评分变化量无显著相关性。结论:经胼胝体相连脑区的半球间功能连接下降可能是影响慢性期脑卒中运动功能障碍持续存在的重要因素之一。感觉运动脑区之间以及健侧感觉运动脑区与患侧颞上回之间的跨半球功能连接与运动恢复密切相关,可用于预测慢性期脑卒中重度偏瘫患者上肢运动功能的恢复。

关键词：脑卒中静息态功能磁共振成像功能连接运动功能障碍

Boosting triplet self-trapped exciton emission in Te(IV)-doped Cs_(2)SnCl_(6) perovskite variants

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nano Research 2021年第5期14卷 1551-1558页

作者： Ruosheng Zeng Kun Bai Qilin Wei Tong Chang Jun Yan Bao Ke Jialuo Huang Liushun wang Weichang Zhou Sheng Cao Jialong Zhao Bingsuo Zou school of Physical Science and Technology MOE Key Laboratory of New Processing Technology for Non-ferrous Metals and MaterialsGuangxi Key Laboratory of Processing for Non-ferrous Metals and Featured MaterialsGuangxi UniversityNanning530004China school of Materials Science and {1. Guilin University of Electronic TechnologyGuilin541004China school of {1. and electronics Key Laboratory of Low-dimensional Quantum Structures and Quantum Control of Ministry of EducationKey Laboratory for Matter Microstructure and Function of Hunan ProvinceSynergetic Innovation Center for Quantum Effects and ApplicationHunan Normal UniversityChangsha410081China

Perovskite variants have attracted wide interest because of the lead-free nature and strong self-trapped exciton (STE) emission. Divalent Sn(II) in CsSnX3 perovskites is easily oxidized to tetravalent Sn(IV), and the resulted Cs2SnCl6 vacancy-ordered perovskite variant exhibits poor photoluminescence property although it has a direct band gap. Controllable doping is an effective strategy to regulate the optical properties of Cs2SnX6. Herein, combining the first principles calculation and spectral analysis, we attempted to understand the luminescence mechanism of Te4+-doped Cs2SnCl6 lead-free perovskite variants. The chemical potential and defect formation energy are calculated to confirm theoretically the feasible substitutability of tetravalent Te4+ ions in Cs2SnCl6 lattices for the Sn-site. Through analysis of the absorption, emission/excitation, and time-resolved photoluminescence (PL) spectroscopy, the intense green-yellow emission in Te4+:Cs2SnCl6 was considered to originate from the triplet Te(IV) ion 3P1.1.0 STE recombination. Temperature-dependent PL spectra demonstrated the strong electron-phonon coupling that inducing an evident lattice distortion to produce STEs. We further calculated the electronic band structure and molecular orbital levels to reveal the underlying photophysical process. These results will shed light on the doping modulated luminescence properties in stable lead-free Cs2MX6 vacancy-ordered perovskite variants and be helpful to understand the optical properties and physical processes of doped perovskite variants.

关键词： Cs_(2)SnCl_(6)perovskite variants equivalent ion doping self-trapped exciton(STE)emission electron-phonon coupling first principles calculation

多模式遮挡效应对多晶硅光伏组件输出性能的影响研究

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楚雄师范学院学报 2024年第3期39卷 8-15页

作者：宋向波王康刘明刘廷森唐艳玲刘爽林顺伦楚雄师范学院物理与电子科学学院云南楚雄675000 曲靖市沾益区电子政务网络管理中心云南曲靖655500

光伏组件在实际工程应用中因各种异物遮挡会形成不同阴影遮挡,导致组件输出性能减弱。本文以多晶硅光伏组件为研究对象,采用实验手段探究多模式遮挡效应对实际组件输出电性能的影响。结果表明:单片电池不同遮挡比例对组件输出电压、电... 详细信息

光伏组件在实际工程应用中因各种异物遮挡会形成不同阴影遮挡,导致组件输出性能减弱。本文以多晶硅光伏组件为研究对象,采用实验手段探究多模式遮挡效应对实际组件输出电性能的影响。结果表明:单片电池不同遮挡比例对组件输出电压、电流、功率均有明显影响,遮挡面积越大组件功率下降百分比越大;电池遮挡片数对组件输出电压、电流、功率影响更为显著,当遮挡片数为3片时,三个时间段组件功率下降百分比均已达80%以上;不同遮挡方式对组件输出电流和功率影响较电压大,当采用双列横向遮挡方式时,功率下降百分比达95%以上;不同遮挡位置主要通过影响组件输出电流以影响输出功率,采用对角遮挡时组件功率下降百分比达到80%以上,中午时段尤为明显,接近90%。本文研究结果为多晶硅光伏组件系统应用提供数据支持。

关键词：遮挡效应多模式多晶硅组件输出性能

基于FPGA的室内可见光通信系统设计与实现

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新疆师范大学学报（自然科学版） 2024年第3期43卷 21-30页

作者：王一帆魏同成张博祯张迎翔杜勇新疆师范大学物理与电子工程学院、新疆发光矿物与光功能材料研究重点实验室新疆乌鲁木齐830054

可见光通信(Visible Light Communication,VLC)具有通信速率高、绿色环保、安全性高、无需频谱许可等优点,已经成为目前的研究热点。针对可见光通信系统设计复杂及系统通信距离短的问题,文章在接收端加入二级放大电路,进一步改善系统抗... 详细信息

可见光通信(Visible Light Communication,VLC)具有通信速率高、绿色环保、安全性高、无需频谱许可等优点,已经成为目前的研究热点。针对可见光通信系统设计复杂及系统通信距离短的问题,文章在接收端加入二级放大电路,进一步改善系统抗干扰能力,同时还研究了室内可见光通信系统的信道模型,并结合高亮发光二极管在室内空间进行了光照强度、接收功率、信噪比及误码率的仿真分析,分析了不同调制方式的抗噪声性能及带宽利用率。将数字信号处理器FPGA(Field Programmable Gate Array,FPGA)作为光通信系统的控制芯片,设计了基于2PPM(Pulse-Phase Modulation,PPM)调制的室内可见光通信系统,通过搭建实验平台验证了该方案下的系统通信性能,在通信距离为3.5m时,误码率小于1.1.-5,实验结果表明该通信系统具有误码率低、结构简单等优点,满足高性能室内可见光通信系统的要求。

关键词：现场可编程门阵列脉冲位置调制室内可见光通信二级放大电路