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Biologically inspired anthraquinone redox centers and biomass graphene for renewable colloidal gels toward ultrahigh-performance flexible micro-supercapacitors

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Journal of Materials Science & Technology 2023年第20期151卷 178-189页

作者： Tiansheng Wang Shunyou Hu Yuanyuan Hu Dong Wu Hao Wu Jinxu Huang Hao Wang weiwei Zhao wen Yu Mi Wang Jie Xu Jiaheng Zhang School of Materials Science and Engineering Harbin Institute of TechnologyHarbin 150001China Key Laboratory of Micro-systems and Micro-structures Manufacturing of Ministry of Education Harbin Institute of TechnologyHarbin 150001China National Innovation Center for Advanced Medical Devices Harbin Institute of TechnologyShenzhen 457001China Research Centre of Printed Flexible Electronics Harbin Institute of TechnologyShenzhen 518055China Sauvage Laboratory for Smart Materials School of Materials Science and EngineeringHarbin Institute of Technology(Shenzhen)ShenzhenGuangdong 518055China Department of Chemistry University of IdahoMoscowIdaho 83844-2343USA

Biomass carbon and small redox biomolecules are attractive materials for green,sustainable energy storage devices owing to their environmentally friendly,low-cost,scalable,and novel ***,most devices manufactured using these materials have low specific capacitance,poor cycle stability,short lifetime,complexity,and low precision of device ***,we report the directed self-assembly of mononuclear anthraquinone(MAQ)derivatives and porous lignin-based graphene oxide(PLGO)into a renewable colloidal gel through noncovalent *** self-assembled gel electrode materials exhibited high capacitance(484.8 F g^(−1) at a current density of 1 A g^(−1))and could be further printed as flexible micro-supercapacitors(FMSCs)with arbitrary patterns and a relatively high resolution on specific *** FMSCs exhibited excellent areal capacitance(43.6 mF cm^(−2)),energy and power densities(6.1μWh cm^(−2) and 50μW cm^(−2),respectively),and cycle stability(>10,000 cycles).Furthermore,the printed FMSCs and integrated FMSC arrays exhibited remarkable flexibility while maintaining a stable *** proposed approach can be applied to other quinone biomolecules and biomass-based carbon *** study provides a basis for fabricating green and sustainable energy storage device architectures with high capacitance,long-term cycling,high scalability,and high precision.

关键词： Biomass carbon Mononuclear anthraquinone Noncovalent interactions Renewable colloidal gel Flexible micro-supercapacitors

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双刚体的连接减振分析

航天制造技术 2020年第1期 34-37页

作者：张庆庆姜薛起钮鑫钰王辉均王学林温伟伟梁梦瀚上海航天设备制造总厂有限公司

对两种发射箱单独进行XYZ三方向上的正弦扫频实验,得到两种发射箱的共振频率及振幅放大倍数,并根据单自由度振动模型方程解出两种发射箱XYZ三个方向上的振动参数。再建立双发射箱刚体连接振动模型,解出两个连接后发射箱新的频率、振幅... 详细信息

对两种发射箱单独进行XYZ三方向上的正弦扫频实验,得到两种发射箱的共振频率及振幅放大倍数,并根据单自由度振动模型方程解出两种发射箱XYZ三个方向上的振动参数。再建立双发射箱刚体连接振动模型,解出两个连接后发射箱新的频率、振幅与连接件刚度、阻尼的关系。最后,通过制定寻优目标,最大程度减小两箱的共振振幅,解出两箱中间连接件的弹性系数及阻尼系数。将优化后的计算结果与两箱未连接时比较,取得明显减小共振振幅的效果。

关键词：刚体连接减振

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液体推进剂事故应急处置方法

化学推进剂与高分子材料 2022年第4期20卷 26-32页

作者：陈通耿葵韩俊杰高缨温伟伟王庆波程金星李浪吴友朋中国人民解放军96901部队北京100094

综合分析了国内外液体推进剂的燃烧和爆炸事故案例特征;基于偏二甲肼和四氧化二氮基本物化性能分析,综述了单一推进剂储存时发生事故特点和现有的应急处置方法;当火箭储存偏二甲肼和四氧化二氮时,对氧化剂和还原剂同时发生泄漏时的事故... 详细信息

综合分析了国内外液体推进剂的燃烧和爆炸事故案例特征;基于偏二甲肼和四氧化二氮基本物化性能分析,综述了单一推进剂储存时发生事故特点和现有的应急处置方法;当火箭储存偏二甲肼和四氧化二氮时,对氧化剂和还原剂同时发生泄漏时的事故过程进行剖析,并提出详细的应急处置方法。

关键词：液体推进剂事故偏二甲肼四氧化二氮应急处置

Research progress of nanoparticles as enzyme mimetics

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Science China(Physics,Mechanics & Astronomy) 2011年第10期54卷 1749-1756页

作者： HU XiaoNa LIU JianBo HOU Shuai wen Tao LIU wenQi ZHANG Ke HE weiwei JI YingLu REN HongXuan WANG Qi WU XiaoChun Chinese Academy of Sciences Key Laboratory of Standardization and Measurement.for Nanotechnology National Center for Nanoscience and Technology Beijing 100190 China Institute of Surface Micro and Nano Materials Xuchang University Xuchang 461000 China National Center for Nanoscience and Technology Beijing 100190 China

Natural enzymes as biological catalysts possess remarkable advantages,especially their highly efficient and selective catalysis under mild ***,most natural enzymes are proteins,thus exhibiting an inherent low durability to harsh reaction *** enzyme mimetics have been pursued extensively to avoid this *** recently,some inorganic nanoparticles(NPs) have been found to exhibit unique enzyme *** addition,their much higher stability overcomes the inherent disadvantage of natural ***,easy mass-production and low cost endow them more *** a new member of artificial enzyme mimetics,they have received intense *** this review article,major progress in this field is summarized and future perspectives are highlighted.

关键词： artificial enzyme mimetics Fe_3O_4 nanoparticles CeO_2 nanoparticles Pt nanoparticles biodetection

Thermal stability of the spin injection in Co/Ag/Co lateral spin valves

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Chinese Physics B 2018年第9期27卷 495-499页

作者： Le Wang Lu-Chen Chen wen-Yu Liu Shuo Han weiwei Wang Zhanjie Lu Shan-Shan Chen Department of Physics and Beijing Key Laboratory of Opto-electronic Functional Natual Materials ＆ Micro-nano Devices Renmin University of China Beijing 100872China Department of Physics Xiamen UniversityXiamen 361005China

Spin injection, spin diffusion, and spin detection are investigated in Co/Ag/Co lateral spin valves at room *** spin accumulation signals are detected by the non-local measurement. By fitting the results to the one-dimensional diffusion equation,8.6% spin polarization of the Co/Ag interface and -180 nm spin diffusion length in Ag are *** treatment results show that the spin accumulation signal drastically decreases after 100℃ annealing, and disappears under 200℃ annealing. Our results demonstrate that, compared to the spin diffusion length, the decrease and the disappearance of the spin accumulation signal are mainly dominated by the variation of the interfacial spin polarization of the Co/Ag interface.

关键词： spin injection spin diffusion length Co/Ag contact lateral spin valve

Development of a real-time magnetic island reconstruction system based on PCIe platform for HL-2A tokamak

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Plasma Science and Technology 2021年第8期23卷 62-69页

作者： Xiaopeng LI Chao CHEN weiwei FAN Renjie ZHU Sicheng HUANG Xincheng wen Zongwu HE Qingwei YANG Zejie YIN State Key Laboratory of Particle Detection and Electronics University of Science and Technology of ChinaHefei 230026People's Republic of China Department of Modern Physics University of Science and Technology of ChinaHefei 230026People's Republic of China Southwestern Institute of Physics Chengdu 610041People's Republic of China

A real-time magnetic island reconstruction(MIR)system based on PCI express platform for HL-2 A tokamak is *** front-end analog circuit and high performance analog-to-digital converters complete high-precision synchronous sampling of 18 channel Mirnov signals,and the application of PCIe platform and direct memory access technology enables high speed data transmission between graphics processing unit and field programmable gate array(FPGA).FPGA,as a mainstream high speed parallelizable computing tool,was used to implement the MIR algorithm,while a parameter table is established in an external double data rate SDRAM to improve the computational *** software of the MIR system is developed with Compute Unified Device Architecture 8.0 in Centos 6 system,which mainly realizes driver development,data transmission,network communication,parameter calculation and system *** system has been tested in HL-2 A plasma discharge experiment,and the reconstructed magnetic island structure can achieve a spatial resolution of 1.02 cm while the time resolution can reach 2 ms.

关键词： magnetic island reconstruction real-time FPGA PCIe GPU

Community Incidence Estimates of Five Pathogens Based on Foodborne Diseases Active Surveillance—China,2023

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China CDC weekly 2024年第24期6卷 574-579,I0002页

作者： Penghui Fan Haihong Han Jikai Liu Xiaochen Ma Ronghua Zhang Hong Liu Yijing Zhou Zunhua Chu Jian wen Li Lin weiwei Li Yunchang Guo NHC Key Laboratory of Food Safety Risk Assessment China National Center for Food Safety Risk AssessmentBeijingChina Beijing Center for Disease Prevention and Control BeijingChina Zhejiang Provincial Center for Disease Control and Prevention Hangzhou CityZhejiang ProvinceChina Shanghai Center for Disease Control and Prevention ShanghaiChina Jiangsu Provincial Center for Disease Control and Prevention Nanjing CityJiangsu ProvinceChina Shandong Province Center for Disease Control and Prevention Jinan CityShandong ProvinceChina Guangdong Province Center for Disease Control and Prevention Guangzhou CityGuangdong ProvinceChina Sichuan Province Center for Disease Control and Prevention Chengdu CitySichuan ProvinceChina

What is already known about this topic?Foodborne diseases,representing significant food safety and public health challenges globally,are not welldocumented in terms of incidence,particularly for cases characterized by acute gastroenteritis(AGI)in *** is added by this report?This study developed a pyramid model to estimate the incidence of five pathogens,stratified by gender and *** estimated incidences per 100,000 people with 95%uncertainty intervals(UI)are as follows:Norovirus,3,188.28(95%UI:2,518.03,7,296.96);Salmonella spp.,1,295.59(95%UI:1,002.62,1,573.11);diarrheagenic ***(DEC),782.62(95%UI:651.19,932.05);Vibrio parahaemolyticus,404.06(95%UI:342.19,468.93);and Shigella spp.,26.73(95%UI:21.05,33.46).What are the implications for public health practice?This study elucidates the incidence rates across various gender and age groups,thereby identifying priority populations for targeted preventive interventions aimed at reducing disease *** insights are crucial for the development of public health policies and management of food safety risks.

关键词： acute diseases stratified

China’s larch stock volume estimation using Sentinel-2 and LiDAR data

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Geo-Spatial Information Science 2023年第3期26卷 392-405页

作者： Tao Yu Yong Pang Xiaojun Liang wen Jia Yu Bai Yilin Fan Dongsheng Chen Xianzhao Liu Guang Deng Chonggui Li Xiangnan Sun Zhidong Zhang weiwei Jia Zhonghua Zhao Xiao Wang Institute of Forest Resource Information Techniques Chinese Academy of ForestryBeijingChina Key Laboratory of Forestry Remote Sensing and Information System National Forestry and Grassland AdministrationBeijingChina Key Laboratory of Tree Breeding and Cultivation of State Forestry Administration Research Institute of ForestryChinese Academy of ForestryBeijingChina College of Geomatics Xi’an University of Science and TechnologyXi’anChina Academy of Inventory and Planning National Forestry and Grassland AdministrationBeijingChina College of Forestry Hebei Agricultural UniversityBaodingChina College of Forestry Northeast Forestry UniversityHarbinChina Ecology and Nature Conservation Institute Chinese Academy of ForestryKey Laboratory of Forest Ecology and Environment of National Forestry and Grassland AdministrationBeijingChina

Forest Stock Volume(FSV)is one of the key indicators in forestry resource investigation and management on local,regional,and national *** by the saturation problems of optical satellite remote-sensing imagery in the retrieving of stock volume,and the high cost of Light Detection And Ranging(LiDAR)data,it is still challenging to estimate FSV in a large area using single-sensor remote-sensing *** this paper,a method integrated multispectral satellite imagery and LiDAR data was developed to map stock volume in a large area.A random forest model was adopted to estimate the stock volume of larch forest in China based on the training samples from the Airborne Laser Scanning(ALS)-derived stock volume and corresponding Sentinel-2 *** using National Forest Inventory(NFI)data,ALS-derived stock volume and ground investigation data demonstrated that the estimated stock volume had a high accuracy(R2=0.59,RMSE=59.69 m^(3)/ha,MD=39.96 m^(3)/ha when validated with NFI data;R2 ranged from 0.77 to 0.85,RMSE ranged from 38.68 m^(3)/ha to 67.38 m^(3)/ha,MD ranged from 24.90 m^(3)/ha to 37.27 m^(3)/ha when validated with ALS stock volume;R2=0.42,RMSE=79.10 m^(3)/ha,MD=62.06 m^(3)/ha when validated with field investigation data).Results of this paper indicated the applicability of estimating stock volume of larch forest in a large area by combining Sentinel-2 data and airborne LiDAR data.

关键词： Sentinel-2 LiDAR stock volume larch validation

Fused-ring induced end-on orientation in conjugated molecular dyads toward efficient single-component organic solar cells

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Aggregate

Aggregate 2023年第2期4卷 291-299页

作者： Dongdong Xia Shengxi Zhou wen Liang Tan Safakath Karuthedath Chengyi Xiao Chaowei Zhao Frédéric Laquai Christopher R.McNeill weiwei Li Institute of Applied Chemistry Jiangxi Academy of SciencesNanchangChina Beijing Advanced Innovation Center for Soft Matter Science and Engineering&State Key Laboratory of Organic-Inorganic Composites Beijing University of Chemical TechnologyBeijingChina Department of Materials Science and Engineering Monash UniversityClaytonAustralia KAUST Solar Center(KSC) Physical Sciences and Engineering Division(PSE)Material Science and Engineering Program(MSE)King Abdullah University of Science and Technology(KAUST)ThuwalSaudi Arabia

The molecular orientations of conjugated materials on the substrate mainly include edge-on,face-on,and ***-on and face-on orientations have been widely observed,while end-on orientation has been rarely *** in organic solar cells(OSCs)charge transport is along the vertical direction,end-on orientation with conjugated backbones perpendicular to the substrate is recognized as the ideal microstructure for *** this work,we for the first time obtained the preferential end-on orientation in a conjugated molecular dyad that contains a conjugated backbone as donor and perylene bisimide side units as *** was realized by introducing a fused-ring structure to replace linear terthiophenes with conjugated backbones,yielding F-MDPBI and L-MDPBI ***,a shifting trend of the molecular orientation from dominating edge-on in L-MDPBI to preferential end-on in F-MDPBI was *** a consequence,vertical charge carrier mobilities in F-MDPBI are one order of magnitude higher than those with preferential edge-on orientation,so single-component OSCs based on this molecular dyad as a single photoactive layer provided a power conversion efficiency of 4.89% compared to 1.70% based on L-MDPBI with preferential edge-on orientation.

关键词： conjugated molecular dyads crystallinity edge-on end-on single-component organic solar cells