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Emerging WS_(2)/WSe_(2)@graphene nanocomposites: synthesis and electrochemical energy storage applications

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Rare Metals 2024年第1期43卷 1-19页

作者： Yu-meng gao Yong Liu Kai-Jia Feng Jun-Qing Ma Ying-Jie Miao Bin-Rui Xu Kun-Ming Pan Osaka Akiyoshi Guang-Xin Wang Ke-Ke Zhang Qiao-Bao Zhang National Joint Engineering Research Center for Abrasion Control and Molding of Metal Materials Henan Key Laboratory of Non-Ferrous Materials Science and Processing TechnologySchool of Materials Science and EngineeringHenan University of Science and TechnologyLuoyang 471023China Provincial and Ministerial Co-Construction of Collaborative School of Electrical Engineering Henan University of Science and TechnologyLuoyang 471023China Biomaterials Laboratory Faculty of EngineeringOkayama UniversityTsushima-NakeOkayama-Shi 700-8530Japan Department of Materials Science and Engineering College of MaterialsXiamen UniversityXiamen 361005China Fujian Key Laboratory of Surface and Interface Engineering for High Performance Materials Xiamen UniversityXiamen 361005China

In recent years, tungsten disulfide(WS_(2)) and tungsten selenide(WSe_(2)) have emerged as favorable electrode materials because of their high theoretical capacity, large interlayer spacing, and high chemical activity;nevertheless, they have relatively low electronic conductivity and undergo large volume expansion during cycling, which greatly hinder them in practical applications. These drawbacks are addressed by combining a superior type of carbon material, graphene, with WS_(2) and WSe_(2) to form a WS_(2)/WSe_(2)@graphene *** materials have received considerable attention in electro-chemical energy storage applications such as lithium-ion batteries(LIBs), sodium-ion batteries(SIBs),and supercapacitors. Considering the rapidly growing research enthusiasm on this topic over the past several years, here the recent progress of WS_(2)/WSe_(2)@graphene nanocomposites in electrochemical energy storage applications is summarized. Furthermore, various methods for the synthesis of WS_(2)/WSe_(2)@graphene nanocomposites are reported and the relationships among these methods, nano/microstructures, and electrochemical performance are systematically summarized and discussed. In addition, the challenges and prospects for the future study and application of WS_(2)/WSe_(2)@graphene nanocomposites in electrochemical energy storage applications are proposed.

关键词： WS_(2)/WSe_(2)@graphene nanocomposites Liion batteries(LIBs) Na-ion batteries(SIBs) Supercapacitors Electrochemical performance

ICP-MS测定淀粉铝含量的不确定度评定及改进方法

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光谱学与光谱分析 2016年第4期36卷 1211-1216页

作者：高瑞峰高孟朝凌睿张宁南京师范大学物理科学与技术学院江苏南京210023 南京市产品质量监督检验院江苏南京210019 南京市食品药品监督检验院江苏南京210038

测量不确定度,表征合理地赋予被测量之值的分散性。应用ISO/IEC Guide 98:1993Guide to the expression of uncertainty in measurement(简称GUM方法)的自下而上的策略进行测量不确定度的评定,剖析完整的分析测量过程,可以找出影响测量... 详细信息

测量不确定度,表征合理地赋予被测量之值的分散性。应用ISO/IEC Guide 98:1993Guide to the expression of uncertainty in measurement(简称GUM方法)的自下而上的策略进行测量不确定度的评定,剖析完整的分析测量过程,可以找出影响测量结果准确性的主要因素;采取针对性的措施,设法消除或降低这些因素的影响,可以改进测量方法。以电感耦合等离子体质谱法测定淀粉和面包糠中铝含量为例,其不确定度来源于测量重复性、最小二乘法拟合工作曲线的过程、标准储备液及其分取稀释过程的不确定度、溶液体积及样品称量过程的不确定度。经过各不确定度分量的评定,得知主要分量是由最小二乘法拟合工作曲线引入的相对标准不确定度u_(rel)(cAl)_1,其次是由配制标准溶液系列的稀释过程引入的相对标准不确定度u_(rel)(cAl)_3、由测量结果的重复性引入的相对标准不确定度urel(rep)。因此,采取较高灵敏度的质谱工作模式、增加测定次数、合理选取校准曲线的系列浓度点数值、选用相对误差较小的量器等措施进行方法改进。改进之后,三个主要分量u_(rel)(cAl)_1,u_(rel)(cAl)_3,u_(rel)(rep)分别从(0.035 8,0.013 2,0.008 5)降为(0.006 0,0.010 5和0.003 3),铝量的合成相对标准不确定度从0.039降为0.013,扩展不确定度从1.8mg·kg^(-1)降为0.4mg·kg^(-1)(k=2),效果显著。

关键词：测量不确定度化学分析方法改进电感耦合等离子体质谱法铝

介质衬底上生长h-BN二维原子晶体的研究进展

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无机材料学报 2019年第12期34卷 1245-1256页

作者：张兴旺高孟磊孟军华中国科学院半导体研究所半导体材料科学重点实验室北京100083 中国科学院大学材料与光电研究中心北京100049

六方氮化硼(h-BN)二维原子晶体以其独特的结构、优异的性质以及广泛的应用前景引起了人们的普遍关注。高质量h-BN材料的制备是其性质研究与实际应用的前提。机械剥离的h-BN尺寸有限,普遍采用的化学气相沉积(CVD)技术通常以过渡金属为衬... 详细信息

六方氮化硼(h-BN)二维原子晶体以其独特的结构、优异的性质以及广泛的应用前景引起了人们的普遍关注。高质量h-BN材料的制备是其性质研究与实际应用的前提。机械剥离的h-BN尺寸有限,普遍采用的化学气相沉积(CVD)技术通常以过渡金属为衬底,器件应用时需要将h-BN转移到其它衬底上。因此,在介质衬底上直接生长h-BN成为二维材料研究领域的一个重要发展方向。本文总结了近年来介质衬底(包括:Si基衬底、蓝宝石衬底和石英衬底等)上直接生长h-BN二维原子晶体的主要进展。人们采用CVD、金属有机气相外延法(MOVPE)、物理气相沉积法(PVD)等方法,通过提高生长温度、衬底表面处理、两步生长等工艺实现了介质衬底上直接生长h-BN。此外,还介绍了介质衬底上h-BN二维原子晶体的主要应用。

关键词：六方氮化硼二维材料介质衬底直接生长综述

Safe transportation and targeted destruction:Albumin encapsulated aggregation-induced emission photosensitizer nanoaggregate for tumor photodynamic therapy through mitochondria damage-triggered pyroptosis

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Aggregate

Aggregate 2024年第6期5卷 379-391页

作者： Juanmei Cao Yong Qu Shaojie Zhu Jinshan Zhan Yiting Xu Yifan Jin Yuqing Wang Zhuoxia Li Chuxing Chai Xiangwei Wu meng gao Changzheng Huang Min Li Department of Dermatology Union HospitalTongji Medical CollegeHuazhong University of Science and TechnologyWuhanChina Department of Hepatobiliary Surgery Union HospitalTongji Medical CollegeHuazhong University of Science and TechnologyWuhanChina National Engineering Research Center for Tissue Restoration and Reconstruction Key Laboratory of Biomedical Engineering of Guangdong ProvinceKey Laboratory of Biomedical Materials and Engineering of the Ministry of EducationInnovation Center for Tissue Restoration and ReconstructionSchool of Materials Science and EngineeringSouth China University of TechnologyGuangzhouChina Central Laboratory Union HospitalTongji Medical CollegeHuazhong University of Science and TechnologyWuhanChina NHC Key Laboratory of Prevention and Treatment of Central Asia High Incidence Diseases Key Laboratory of Xinjiang Endemic and Ethnic DiseasesDepartment of Hepatobiliary SurgeryThe First Affiliated Hospital of Shihezi UniversityShihezi University School of MedicineShiheziChina Department of Dermatology The First Affiliated Hospital of Shihezi UniversityShiheziChina

Photodynamic therapy is a highly recommended alternative treatment for solid tumors,such as cutaneous or luminal tumors,in clinical ***,conventional photosensitizers(PSs)often induce undesirable phototoxic effects because of their normal tissue distribution and a reduction in antitumor effects resulting from aggregation-caused quenching *** present study developed a novel nanoformulated aggregation-induced emission(AIE)-characteristic PS,nab-TTVPHE,which is composed of human serum albumin as a carrier and TTVPHE as a therapeutic agent,as a more effective cancer treatment with lower phototoxic ***,the reactive oxygen species generated by TTVPHE were shielded by the nanoaggregate structure,and the photodynamic activity was after nanostructure ***-TTVPHE was actively internalized in tumor cells via secreted protein,acidic and rich in cysteine and released to form *** accumulated in mitochondria,where it triggered mitochondrial damage under light irradiation via its photodynamic activity and induced pyroptosis via the caspase-3/gasdermin E(GSDME)signaling pathway to kill tumor ***,this nano-formulated AIE-characteristic PS provides an innovative strategy for cancer treatment with lower phototoxic effect and the ability to boost potential antitumor immunity via GSDME-mediated pyroptosis.

关键词： aggregation-induced emission gasdermin E mitochondria damage nanoparticle albumin-bound photodynamic therapy pyroptosis

基于有限元分析的土钉支护优化设计的复合形算法

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岩土工程学报 2006年第8期28卷 1008-1012页

作者：高盟张远芳新疆农业大学水利与土木工程学院新疆乌鲁木齐830052

通过建立三维有限元模型,对土钉支护的变形和受力性能进行分析,得出土钉力的合理分布。在此基础上,考虑土钉支护的水平位移,采用复合形算法,对土钉支护的结构优化设计进行研究,建立了土钉支护结构的优化设计数学模型,并编制了相应的计... 详细信息

通过建立三维有限元模型,对土钉支护的变形和受力性能进行分析,得出土钉力的合理分布。在此基础上,考虑土钉支护的水平位移,采用复合形算法,对土钉支护的结构优化设计进行研究,建立了土钉支护结构的优化设计数学模型,并编制了相应的计算程序。通过算例分析,并与基于极限平衡分析的优化结果相比较,得出合理的土钉支护结构设计的参考结论。

关键词：土钉支护三维有限元复合形算法极限平衡

三维虚拟校园漫游系统中的角色建模与行为控制

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现代电子技术 2019年第14期42卷 104-107页

作者：高猛山东理工大学

目前各个高校信息化建设的主要内容是建设数字化校园,且各个高校软硬件综合实力主要体现在三维虚拟校园漫游系统的建设和开发上。文中研究三维虚拟校园漫游系统中的角色建模和行为控制过程,以期创建出更好的三维虚拟校园漫游系统。采用... 详细信息

目前各个高校信息化建设的主要内容是建设数字化校园,且各个高校软硬件综合实力主要体现在三维虚拟校园漫游系统的建设和开发上。文中研究三维虚拟校园漫游系统中的角色建模和行为控制过程,以期创建出更好的三维虚拟校园漫游系统。采用基于数字摄影测量技术三维建模方法,构建单一建筑三维角色模型,将多个单一建筑模型合拼调整,并加入环境要素和其他要素,获取总体虚拟校园角色模型。通过交互漫游、提示角色信息、碰撞检测实现对角色的行为控制。实验结果表明,所提方法建立的角色模型纹理数较多、清晰度高、运行速度快,且平均碰撞检测时间低于19.8 ms,为浏览者提供更为清晰、流畅的可视化三维虚拟校园漫游平台。

关键词：虚拟校园漫游系统角色建模行为控制碰撞检测信息化建设

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立体CG制作中的摄影机设置

广播与电视技术 2008年第12期35卷 36-40页

作者：高盟北京邮电大学

本文介绍了立体影视拍摄中的摄影机设置方法,对于摄影机汇聚进行分析,分析其缺陷以及产生的原因,对拍摄时摄影机设置和放映时投影机的设置问题进行探讨,针对立体影像的拍摄和后期制作提出了优化的解决方案。

关键词：立体摄影机汇聚平行拍摄视差

Picotesla-sensitivity microcavity optomechanical magnetometry

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Light(Science & Applications) 2024年第11期13卷 2835-2846页

作者： Zhi-Gang Hu Yi-meng gao Jian-Fei Liu Hao Yang Min Wang Yuechen Lei Xin Zhou Jincheng Li Xuening Cao Jinjing Liang Chao-Qun Hu Zhilin Li Yong-Chang Lau Jian-Wang Cai Bei-Bei Li Beijing National Laboratory for Condensed Matter Physics Institute of PhysicsChinese Academy of SciencesBeijing 100190China University of Chinese Academy of Sciences Beijing 100049China School of Physics Beihang UniversityBeijing 100191China Songshan Lake Materials Laboratory Dongguan 523808 GuangdongChina

Cavity optomechanical systems have enabled precision sensing of magnetic fields,by leveraging the optical resonance-enhanced readout and mechanical resonance-enhanced *** studies have successfully achieved mass-produced and reproducible microcavity optomechanical magnetometry(MCOM)by incorporating Terfenol-D thin films into high-quality(Q)factor whispering gallery mode(WGM)***,the sensitivity was limited to 585 pT Hz^(−1/2),over 20 times inferior to those using Terfenol-D *** this work,we propose and demonstrate a high-sensitivity and mass-produced MCOM approach by sputtering a FeGaB thin film onto a high-Q SiO2 WGM *** studies are conducted to explore the magnetic actuation constant and noise-limited sensitivity by varying the parameters of the FeGaB film and SiO2 *** magnetometers with different radii are fabricated and *** utilizing a microdisk with a radius of 355μm and a thickness of 1μm,along with a FeGaB film with a radius of 330μm and a thickness of 1.3μm,we have achieved a remarkable peak sensitivity of 1.68 pT Hz^(−1/2)at 9.52 *** represents a significant improvement of over two orders of magnitude compared with previous studies employing sputtered Terfenol-D ***,the magnetometer operates without a bias magnetic field,thanks to the remarkable soft magnetic properties of the FeGaB ***,as a proof of concept,we have demonstrated the real-time measurement of a pulsed magnetic field simulating the corona current in a high-voltage transmission line using our developed *** high-sensitivity magnetometers hold great potential for various applications,such as magnetic induction tomography and corona current monitoring.

关键词： particles magnetometer film

山脊线与坡度和峰值速度放大系数的相关性研究

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地球物理学报 2015年第1期58卷 229-237页

作者：蒋涵周红高孟潭中国地震局地球物理研究所北京100081

地形效应是地震工程和地震学的重要研究内容.数值方法是研究地形效应的重要工具.然而以往关于地形特征对地形效应的影响的研究大多是基于二维简单模型.对三维真实地形特征和地震动放大的关系缺乏详细的研究.为了更好地描述三维地形特征... 详细信息

地形效应是地震工程和地震学的重要研究内容.数值方法是研究地形效应的重要工具.然而以往关于地形特征对地形效应的影响的研究大多是基于二维简单模型.对三维真实地形特征和地震动放大的关系缺乏详细的研究.为了更好地描述三维地形特征,本文将地形用不同的地形特征因子来描述,并用算法将它们从地形数据中提取出来.从而使地形和放大系数的相关性的研究转换为不同地形特征因子和放大系数的相关性的研究上.本文中,我们选择芦山地区作为研究对象,用算法提取出特征因子山脊线和坡度.它们分别表征了山脊形态和山体的陡峭程度.我们又用谱元法分别模拟三种不同主频Ricker子波的地震波在起伏地表和水平地表模型中的传播,并得到了它们各自的峰值速度(PGV)放大系数.通过分析三个主频的PGV放大系数在山脊线上分布,我们发现放大系数幅值在山脊线上分布不均匀.放大系数较高的地方位于山脊线弯曲或宽度发生变化的附近.我们又统计了三个放大系数在滑动平均坡度上分布,并得到了放大系数均值和坡度的正相关曲线.结果表明坡度和放大系数两者在幅值分布上具有正相关性.

关键词：地形效应峰值速度山脊线坡度谱元法