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Linearly Polarization-Sensitive Perovskite Photodetectors

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Nano-Micro Letters 2023年第6期15卷 428-435页

作者： jie sun Liming Ding Center for Excellence in Nanoscience(CAS) Key Laboratory of Nanosystem and Hierarchical Fabrication(CAS)National Center for Nanoscience and TechnologyBeijing 100190People’s Republic of China University of Chinese Academy of Sciences Beijing 100049People’s Republic of China

Polarization means symmetry loss for light vibration along light propagation direction,which is a particular physical property of *** polarization state is indecipherable for most polarization-insensitive *** can carry and differentiate light information,and can be used in polarized light detection,polarization imaging and encryption communication[1].Photodetectors are the core component of some photoelectric devices[2]used in biomedical sensing,remote sensing,military field,etc.

关键词： Polarization symmetry polarized

Migration law of respirable dust on a super-long fully mechanized double-shearer working face

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International Journal of Mining Science and Technology 2016年第6期26卷 1109-1115页

作者： Jia Min Fu Yingpeng Yuan yong Wei Hongmin sun Song Li jie School of Mines China University of Mining and Technology Jining No.2 Coal Mine Yankuang Group

In order to understand the migration law of respirable dust and gain reasonable design parameters for dust control on a super-long double-shearer fully mechanized working face, this paper describes research carried out using a numerical simulation package(Fluent) based on gas-solid coupling dispersed multiphase flow model and field measurement to research different technology modes, dust distribution law at different intervals where shearers work in opposite directions on the lower 9303 face, No. 2 Jining Mine,Yankuang Coal Mining Co. Results show that the concentration of dust 3–6 m away from the shearers working in the same directions was large, while the impact area of respirable dust near the shearer increased significantly to 5–6 m with the distance between two shearers working in opposite *** concentration of dust on a double-shearer face was considerably higher than that of a face with one shear under the combined effect of wind speed on the face and disturbed wind around the shearer, while the dust concentration near the shearer on the return side was considerably higher than that on the inlet side. The concentration of dust on a double-shearer face along the airflow declined slowly so that dust was hard to control. Simulation results confirmed the results of field measurement, which could provide reference for dust prevention design.

关键词： Super-long working face Double-shearer Respirable dust Migration law Numerical simulation

Implementation procedure for the generalized moving Preisach model based on a first order reversal curve diagram

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Rare Metals 2009年第4期28卷 355-360页

作者： HAN yong ZHU jie State Key laboratory for Advanced Metals and Materials University of Science and Technology Beijing Beijing 100083 China

First order reversal curves （FORC） of nanocomposite Nd2Fe14B/Fe3B magnetic materials were measured to attain a FORC diagram, which characterizes reversible magnetization, irreversible magnetization, and magnetic interactions in a hysteresis system. Then, generalized mov- ing Preisach model （GMPM） was implemented based on the FORC diagram. Reversible and irreversible magnetizations shown in FORCs and a FORC diagram were used as an input of GMPM. Coupling interaction between reversible and irreversible magnetizations was added when calculating reversible magnetization. Meanwhile, irreversible magnetic moments＇ interaction was approximately represented by mean field interaction. The result shows that the simulated main curves mostly coincide with the experimental curves.

关键词： FORC diagram Preisach model reversible magnetization irreversible magnetization magnetic interactions

热塑性纤维素与PVA混溶性的分子动力学模拟

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原子与分子物理学报 2025年第3期42卷 149-158页

作者：冯彦洪陈帅杰孙航华南理工大学机械与汽车工程学院聚合物新型成型装备国家工程研究中心聚合物成型加工工程教育部重点实验室广东省高分子先进制造技术及装备重点实验室广州510000

首次提出了将氧化还原改性纤维素(Oxidation-reduction modified cellulose,ORC)与聚乙烯醇(Poly(vinyl alcohol),PVA)共混进行制备复合材料,并采用分子动力学模拟研究了ORC与PVA的混溶性.对分子链间相互作用能和氢键数量分析发现,随着... 详细信息

首次提出了将氧化还原改性纤维素(Oxidation-reduction modified cellulose,ORC)与聚乙烯醇(Poly(vinyl alcohol),PVA)共混进行制备复合材料,并采用分子动力学模拟研究了ORC与PVA的混溶性.对分子链间相互作用能和氢键数量分析发现,随着改性程度增加,ORC与PVA会产生更强烈的相互作用,这促进了组分间的混溶.当ORC的改性程度达到40%后,ORC与PVA的溶解度参数差值为2.02(J/cm^(3))^(1/2),达到混溶条件.根据Flory-Huggins理论确定了醇解度为88%和99%的PVA与ORC的混溶性,结果表明PVA(88%)与ORC的混溶性更好.对共混体系中形成氢键原子的径向分布函数分析发现,醋酸乙烯酯重复单元上的羰基更倾向与ORC形成分子链间氢键,而乙烯醇重复单元上的羟基更倾向形成分子链内氢键,这促使PVA(88%)/ORC共混体系中形成更多的分子链间氢键,从而混溶性更好.研究结果可为ORC/PVA复合材料的制备提供理论指导.

关键词：混溶性氧化还原改性纤维素分子动力学聚乙烯醇

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张掖地区含水沙土冻胀放热的简单分析

河西学院学报 2017年第5期33卷 1-6页

作者：董光兴吴永杰孙桂华王新星葛素红河西学院物理与机电工程学院甘肃张掖734000

应用混合法测量了张掖地区不同浓度沙土溶液制成的冻土的熔解热.发现:在1标准大气压、0℃温度条件下由沙土溶液制成的冻土的熔解热随着密度的增大而降低;拟合沙土溶液制成冻土的熔解热与含沙量的函数关系,发现冻土的熔解热基本不受混合... 详细信息

应用混合法测量了张掖地区不同浓度沙土溶液制成的冻土的熔解热.发现:在1标准大气压、0℃温度条件下由沙土溶液制成的冻土的熔解热随着密度的增大而降低;拟合沙土溶液制成冻土的熔解热与含沙量的函数关系,发现冻土的熔解热基本不受混合物质微粒之间相互作用的影响,可以简化为水的熔解热乘以含水百分比,即冻土的熔解热随着含水率的增加而成正比例增加;建立较为理想的模型计算0.3m^3(表面积1m^2)冻土需要吸放的热量及该热量对本局域表面积1m^2上方近地1.5km高度空气层温度的影响,发现天然冻土在含水率很大的情况下需要热量大,产生温度的变化也大.而农用耕地需要热量较小,对气温的影响也比较小.可以认为,在张掖这种地下水位较高且以农业生产为主的地区,季节性土壤冻胀对局地气温会产生一定的影响,其对应对局地空气温度的改变量约为3℃.

关键词：冻土混合法熔解热热量

Bioinspiration:Pull-Out Mechanical Properties of the Jigsaw Connection of Diabolical Ironclad Beetle’s Elytra

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Acta Mechanica Solida Sinica 2023年第1期36卷 86-94页

作者： jie Wei Bo-Hua sun School of Sciences Xi’an University of Architecture and TechnologyXi’an 710055China School of Civil Engineering Xi’an University of Architecture and TechnologyXi’an 710055China Institute of Mechanics and Technology Xi’an University of Architecture and TechnologyXi’an 710055China

In engineering,connections between components are often weak *** connection methods can easily reduce the strength of components,resulting in unpredictable failure *** nature,numerous connection methods for biological structures with excellent mechanical properties have *** the connection methods of organisms in nature can inspire new ideas for bionic connection *** the diabolical ironclad beetle is under pressure,the elytra are not easy to separate,which ensures the stability of the beetle’s external structure,thus making the beetle extremely resistant to *** reason for this is the interlocking and toughening effect of the unique jigsaw connection between the ***,in this paper,a theoretical analysis model is established and used to analyze the mechanical behavior of the diabolical ironclad beetle’s jigsaw connection during the drawing process and determine the influences of factors such as quantity,angle,and geometric characteristics on the mechanical properties of the jigsaw *** results of the theoretical analysis are then compared with the results of experiments and ABAQUS finite element simulation.

关键词： Theoretical analysis Bionics Jigsaw connection 3D Printing Finite element

Preparation and film-growing mechanism of hydrous zirconia coated on TiO_2

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International Journal of Minerals,Metallurgy and Materials 2010年第5期17卷 660-667页

作者： jie Li Ti-chang sun yong Wang Li-na Wang Jing-kui Qu Tao Qi School of Civil and Environmental Engineering University of Science and Technology Beijing Beijing 100083 China National Engineering Laboratory for Hydrometallurgical Cleaner Production Technology Institute of Process Engineering Chinese Academy of SciencesBeijing 100190 China Key Laboratory of Green Process and Engineering Institute of Process Engineering Chinese Academy of Sciences Beijing 100190 China

To overcome the photochemical activity of rutile used as a pigment and improve its durability in application, hydrous zirconia-coated TiO2 was prepared by the precipitation method. High-resolution transmission electron microscope （HRTEM） and X-ray photoelectron spectroscopy （XPS） were used to characterize the morphology and surface structure of hydrous zirconia-coated TiO2. The ζ-potential and ultraviolet （UV） absorption of both coated and uncoated rutile were examined. The results show that hydrous zirconia can not only improve the durability but also raise the lightness. A suitable ZrO2 content of hydrous zirconia-coated TiO2 is about 1.0wt%, and a dense film on the surface of rutile can be formed with better pigmentary properties. Based on the thermodynamic analysis, the zirconia-coating process and the film growth mechanism were discussed.

关键词： coatings rutile zirconia materials preparation mechanism

A versatile test bench for photomultiplier tube characterization and its application in the DAMPE-PSD

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Nuclear Science and Techniques 2016年第3期27卷 145-152页

作者： yong Zhou Zhi-Yu sun Yu-Hong Yu yong-jie Zhang Fang Fang Jun-Ling Chen Bi-Tao Hu Institute of Modern Physics Chinese Academy of Sciences509 Nanchang RoadLanzhou 730000China School of Nuclear Science and Technology Lanzhou University222 South Tianshui RoadLanzhou 730000China Graduate University of the Chinese Academy of Sciences 19A Yuquan RoadBeijing 100049China

Performance characterization for massive photomultiplier tubes(PMTs) is a frequently encountered procedure in large nuclear and particle *** facilitate this work,a dedicated test bench system has been developed at the Institute of Modern Physics,Chinese Academy of *** two-dimensional photocathode position scanning capability is an intrinsic function of the test bench,and up to 25 PMTs,with the diameter smaller than 2",can be tested *** parameters of the light source pulses can be adjusted in a wide range,thus making it suitable for various characteristics *** test bench system is highly automated with all the controlling operations integrated into a single ***,the hardware platform is extensible which allows complex testing schemes,and the modularity in the software design makes the migration from one testing configuration to another light-weight and *** these features make the test bench versatile and reusable in different *** has been first used in the construction of the Plastic Scintillator Detector(PSD) of DArk Matter Particle Explorer(DAMPE),and a total of 570 Hamamatsu R4443 tubes were tested *** performance was verified and the testing results are also reported in this article.

关键词：试验台架系统光电倍增管通用性特性性能试验台中国科学院院士测试方案粒子探测器

Therapeutic sponge prevents postoperative breast cancer recurrence by sustainably dissociating into CD44-targeted nanoplatform

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Nano Research 2024年第3期17卷 1792-1803页

作者： Junhui Sui Mingda Zhao Zhihao Guo Jiafeng Li jie Chen Hongli Chen jie Liang yong sun Xingdong Zhang Yujiang Fan National Engineering Research Center for Biomaterials Sichuan UniversityChengdu 610064China Beijing Tide Pharmaceutical Co. Ltd.Beijing 100176China The Key Laboratory of Biomedical Material School of Life Science and TechnologyXinxiang Medical UniversityXinxiang 453003China Coal Mining Branch China Coal Research InstituteBeijing 100028China School of Ophthalmology&Optometry Eye HospitalWenzhou Medical UniversityWenzhou 325027China

Locoregional recurrence and distant metastasis of breast cancer still pose a significant risk for patients’*** address the clinical challenge,functional absorbable sponges(HA-SH/PP-Dox/Lap/COL I(HCNPs))were constructed by biomimetic extracellular matrix of collagen I/hyaluronic acid complex conjugated with doxorubicin/lapatinib(Dox/Lap)-loaded *** HCNPs sponge exhibited excellent clotting ability and blood absorption ***,Dox/Lap-loaded nanoparticles were synchronously endowed with a large number of oligo hyaluronic acid segments after degradation,which thus enhanced the ability of targeting into CD44-overexpressed tumor *** implantable HCNPs sponge in resected cavity of postoperative 4T1 models inhibited the spread of scattered tumor cells by absorbing the inevitable *** importantly,CD44 targeted nanoparticle with suitable Dox/Lap proportion continuously released from sponge to kill tumor cells of surrounding HCNPs and those remaining at surgical margin,thus prevented local recurrence as well as distant ***,the functional HCNPs sponge might provide a safer and more effective strategy for postoperative treatment of cancer.

关键词： therapeutic sponge scattered tumor cells recurrence and metastasis CD44-targeted nanoparticles breast cancer