检索结果-内蒙古大学图书馆

AI-enabled Lorentz microscopy for quantitative imaging of nanoscale magnetic spin textures

npj Computational materials 2024年第1期10卷 2102-2111页

作者： Arthur.R.C.McCray Tao Zhou Saugat Kandel Amanda Petford-Long Mathew J.Cherukara Charudatta Phatak Materials Science Division Argonne National LaboratoryLemontILUSA Applied Physics Program Northwestern UniversityEvanstonILUSA Center for Nanoscale Materials Argonne National LaboratoryLemontILUSA Advanced Photon Source Argonne National LaboratoryLemontILUSA Department of Materials Science and Engineering Northwestern UniversityEvanstonILUSA

The manipulation and control of nanoscale magnetic spin textures are of rising interest as they are potential foundational units in next-generation computing *** this requires a quantitative understanding of the spin texture behavior under external stimuli using in situ *** transmission electron microscopy(LTEM)enables real-space imaging of spin textures at the nanoscale,but quantitative characterization of in situ data is extremely ***,we present an AI-enabled phase-retrieval method based on integrating a generative deep image prior with an image formation forwardmodel for *** approach uses a single out-of-focus image for phase retrieval and achieves significantly higher accuracy and robustness to noise compared to existing ***,our method is capable of isolating sample heterogeneities from magnetic contrast,as shown by application to simulated and experimental *** approach allows quantitative phase reconstruction of in situ data and can also enable near real-time quantitative magnetic imaging.

关键词： textures magnetic Lorentz

来源：评论

学校读者我要写书评

暂无评论

Laser additive manufacturing of titanium alloys:process,materials and post-processing

引用

Rare Metals 2024年第12期43卷 6288-6328页

作者： Jin-Long Su Fu-Lin Jiang Jie Teng Le-Qun Chen Guillermo Requena Ming Yan Lai-Chang Zhang Y.Morris Wang Ilya V.Okulov Hong-Mei Zhu Guo-Wei Bo You-Xiang Chew Chao-Lin Tan Singapore Institute of Manufacturing Technology(SIMTech) Agency for ScienceTechnology and Research(A*STAR)Singapore999002Singapore College of Materials Science and Engineering Hunan UniversityChangsha410082China German Aerospace Center(DLR) Institute of Materials Research51147CologneGermany Metallic Structures and Materials Systems for Aerospace Engineering RWTH Aachen University52062AachenGermany Department of Materials Science and Engineering Southern University of Science and TechnologyShenzhen518055China Centre for Advanced Materials and Manufacturing Edith Cowan UniversityJoondalupWA6027Australia Department of Materials Science and Engineering University of CaliforniaLos AngelesCA900095USA Leibniz Institute for Materials Engineering-IWT 28359BremenGermany Faculty of Production Engineering University of Bremen28359BremenGermany Key Laboratory of Hunan Province of Equipment Safety Service Technology Under Extreme Environment University of South ChinaHengyang421001China Key Laboratory of Efficient and Clean Energy Utilization College of Energy and Power EngineeringChangsha University of Science and TechnologyChangsha410114China

Laser additive manufacturing(LAM)of titanium(Ti)alloys has emerged as a transformative technology with vast potential across multiple *** recap the state of the art,Ti alloys processed by two essential LAM techniques(i.e.,laser powder bed fusion and laser-directed energy deposition)will be reviewed,covering the aspects of processes,materials and *** impacts of process parameters and strategies for optimizing parameters will be *** types of Ti alloys processed by LAM,includingα-Ti,(α+β)-Ti,andβ-Ti alloys,will be overviewed in terms of micro structures and benchmarking ***,the post-processing methods for improving the performance of L AM-processed Ti alloys,including conventional and novel heat treatment,hot isostatic pressing,and surface processing(e.g.,ultrasonic and laser shot peening),will be systematically reviewed and *** review summarizes the process windows,properties,and performance envelopes and benchmarks the research achievements in LAM of Ti *** outlooks of further trends in LAM of Ti alloys are also highlighted at the end of the *** comprehensive review could serve as a valuable resource for researchers and practitioners,promoting further advancements in LAM-built Ti alloys and their applications.

关键词： Additive manufacturing Titanium alloy Process parameter Post-processing Microstructure and property Fatigue

来源：评论

学校读者我要写书评

暂无评论

Hot deformation characteristics and dynamic recrystallization behaviors of adamite cast steel for work rolls in hot rolling

引用

Metallurgia Italiana 2024年第7-8期115卷 6-11页

作者： An, Y.-J. Cho, K.-T. Jeon, J.-Y. Shin, S.-E. Kim, D.-G. Purpose Built Mobility Group Seonam Technology Application Division Korea Institute of Industrial Technology Korea Republic of Department of Materials Science and Metallurgical Engineering Sunchon National University Korea Republic of Materials Science and Chemical Engineering Center Institute for Advanced Engineering Korea Republic of

Hot workability and dynamic recrystallization(DRX) behavior of adamite cast steel used as work rolls for hot rolling were investigated in order to improve the service life through hot forging. The specimens were heated at the two different initial heating temperatures(IHT) of 1200 °C or 1100 °C. And the hot compression tests(HCT) were performed in temperature ranges from 1100 to 800 °C with the strain rate ranges from 1.0 to 0.001 s-1. In the processing maps, the stable hot working regions with η values as 31-24 % and positive ξ in the IHT of 1100 °C are larger than that of 1200 °C. In DRX behavior, the DRX fractions(fDRX) are higher than 50 % in all hot compressed specimens with the IHT of 1100 °C compared to the IHT of 1200 °C. The defects such as partial meltings or cracks at the HCT temperature of 1100 °C or 800 °C are observed in both the IHTs of 1200 °C and 1100 °C. However, the defects observed at the IHT of 1100 °C are significantly alleviated compared to the IHT of 1200 °C. © 2024 Associazione Italiana di Metallurgia. All rights reserved.

关键词： Compression testing

来源：评论

学校读者我要写书评

暂无评论

Progress in computational understanding of ferroelectric mechanisms in HfO_(2)

引用

npj Computational materials 2024年第1期10卷 1292-1309页

作者： Tianyuan Zhu Liyang Ma Shiqing Deng Shi Liu Key Laboratory for Quantum Materials of Zhejiang Province Department of PhysicsSchool of ScienceWestlake UniversityHangzhouZhejiang310030China Institute of Natural Sciences Westlake Institute for Advanced StudyHangzhouZhejiang310024China Beijing Advanced Innovation Center for Materials Genome Engineering University of Science and Technology BeijingBeijing100083China

Since the first report of ferroelectricity in nanoscale HfO_(2)-based thin films in 2011,this siliconcompatible binary oxide has quickly garnered intense interest in academia and industry,and continues to do *** its deceivingly simple chemical composition,the ferroelectric physics supported by HfO_(2) is remarkably complex,arguably rivaling that of perovskite *** investigations,especially those utilizing first-principles density functional theory(DFT),have significantly advanced our understanding of the nature of ferroelectricity in these thin films.

关键词： ferroelectric utilizing mechanisms

来源：评论

学校读者我要写书评

暂无评论

Design of FeSiBPCu soft magnetic alloys with good amorphous forming ability and ultra-wide crystallization window

引用

Journal of materials science & technology 2023年第16期147卷 124-131页

作者： Xingdu Fan Tao Zhang Weiming Yang Junhua Luan Zengbao Jiao Hui Li Jiangsu Key Laboratory for Advanced Metallic Materials School of Materials Science and EngineeringSoutheast UniversityNanjing 211189China Institute of Massive Amorphous Metal Science China University of Mining and TechnologyXuzhou 221116China Center for Advanced Structural Materials Department of Mechanical and Biomedical EngineeringCollege of Science and EngineeringCity University of Hong KongKowloonHong KongChina Department of Mechanical Engineering The Hong Kong Polytechnic UniversityHong KongChina School of Materials Science and Engineering Shanghai UniversityShanghai 200444China

The Fe_(81.3)Si_(4)B_(13–x)PxCu_(1.7) soft magnetic alloys with high Cu and proper P elements addition were synthesized with the aim of ensuring the amorphous forming ability(AFA)while expanding the crystallization window(CW).It is found that the atomic ratio of P/Cu of∼3 is advantageous for AFA whereas a small amount of P addition promotes the precipitation ofα-Fe grains and excessive P addition induces surface crystallization behavior of the present *** Cu concentration can expand the annealing temperature(Ta)window whereas proper P addition effectively expands the annealing time(ta)*** Fe_(81.3)Si_(4)B_(13-x)PxCu_(1.7) soft magnetic alloy was successfully synthesized with a large Ta window of up to 130°C and ta window of 90 min,which is a breakthrough for nanocrystalline alloys with high saturation *** analysis reveals that the ultra-wide CW is related to the unique nucleation mechanism,that is,theα-Fe grains are precipitated attaching to the Cu or CuP clusters and enveloping the Cu clusters,resulting in the high number density ofα-Fe *** ultra-wide CW promises the potential material in flexibly choosing the annealing process according to the performance.

关键词： Nanocrystalline alloys Amorphous forming ability Crystallization window Soft magnetic properties

来源：评论

学校读者我要写书评

暂无评论

A fiber-reinforced solid polymer electrolyte by in situ polymerization for stable lithium metal batteries

引用

Nano Research 2023年第7期16卷 9259-9266页

作者： Yifan Xu Ruo Zhao Lei Gao Tingsong Gao Wenjuan Wang Juncao Bian Songbai Han Jinlong Zhu Qiang Xu Yusheng Zhao Institute for Advanced Study Shenzhen UniversityShenzhen 518055China Guangdong Provincial Key Laboratory of Energy Materials for Electric Power Guangdong-Hong Kong-Macao Joint Laboratory for Photonic-Thermal-Electrical Energy Materials and DevicesAcademy for Advanced Interdisciplinary StudiesSouthern University of Science and TechnologyShenzhen 518055China Shenzhen Key Laboratory of Micro/Nano-Porous Functional Materials Department of Materials Science and EngineeringSouthern University of Science and TechnologyShenzhen 518055China School of Materials Science and Engineering Peking UniversityBeijing 100871China

Solid polymer electrolytes(SPEs)by in situ polymerization are attractive due to their good interfacial contact with *** reported in situ polymerized SPEs,however,suffer from the low polymerization degree that causes poor mechanical strength,Li dendrite penetration,and performance decay in Li-metal *** highly polymerized SPEs are more stable than lowly polymerized ones,they are restricted by their sluggish long-chain mobility and poor ionic *** this work,a three-dimensional fibrous membrane with ion selectivity was prepared and used as a functional filler for the in situ formed *** obtained SPE has high stability due to its high polymerization degree after the long-term heating *** fibrous membrane plays a vital role in improving the SPE’s *** rich anion-adsorption sites on the fibrous membrane can alleviate the polarization effect and benefit a uniform current distribution at the *** fibrous nanostructure can efficiently interact with the polymeric matrix,providing rich hopping sites for fast Li+***,the obtained SPE enables a uniform Li deposition and long-term cycling performance in Li-metal *** work reported an in situ formed SPE with both high polymerization degree and ionic conductivity,paving the way for designing high-performance SPEs with good comprehensive properties.

关键词： solid polymer electrolytes fibrous solid filler metal-organic frameworks in situ polymerization ion selectivity

来源：评论

学校读者我要写书评

暂无评论

Magnetic-biased chiral molecules enabling highly oriented photovoltaic perovskites

引用

National science Review 2024年第2期11卷 221-230页

作者： Jing Chen Caner Deger Zhen-Huang Su Kai-Li Wang Guang-Peng Zhu Jun-Jie Wu Bing-Chen He Chun-Hao Chen Tao Wang Xing-Yu Gao Ilhan Yavuz Yan-Hui Lou Zhao-Kui Wang Liang-Sheng Liao Institute of Functional Nano&Soft Materials(FUNSOM) Laboratory of Advanced Negative Carbon TechnologiesSoochow University Department of Physics Marmara University Shanghai Synchrotron Radiation Facility(SSRF) Shanghai Advanced Research InstituteChinese Academy of Sciences College of Energy Soochow Institute for Energy and Materials Innovations Soochow University Macao Institute of Materials Science and Engineering Macau University of Science and Technology

The interaction between sites A, B and X with passivation molecules is restricted when the conventional passivation strategy is applied in perovskite（ABX3） photovoltaics. Fortunately, the revolving A-site presents an opportunity to strengthen this interaction by utilizing an external field. Herein, we propose a novel approach to achieving an ordered magnetic dipole moment, which is regulated by a magnetic field via the coupling effect between the chiral passivation molecule and the A-site（formamidine ion） in *** strategy can increase the molecular interaction energy by approximately four times and ensure a well-ordered molecular arrangement. The quality of the deposited perovskite film is significantly optimized with inhibited nonradiative recombination. It manages to reduce the open-circuit voltage loss of photovoltaic devices to 360 mV and increase the power conversion efficiency to 25.22%. This finding provides a new insight into the exploration of A-sites in perovskites and offers a novel route to improving the device performance of perovskite photovoltaics.

关键词： perovskite photovoltaics magnetic moment A-site regulation chiral molecules

来源：评论

学校读者我要写书评

暂无评论

In-situ forming ultra-mechanically sensitive materials for high-sensitivity stretchable fiber strain sensors

引用

National science Review 2024年第6期11卷 254-263页

作者： Rouhui Yu Changxian Wang Xiangheng Du Xiaowen Bai Yongzhong Tong Huifang Chen Xuemei Sun Jing Yang Naoji Matsuhisa Huisheng Peng Meifang Zhu Shaowu Pan State Key Laboratory for Modification of Chemical Fibers and Polymer Materials College of Materials Science and Engineering Donghua University MOE Key Lab of Disaster Forecast and Control in Engineering School of Mechanics and Construction Engineering Jinan University State Key Laboratory of Molecular Engineering of Polymers Department of Macromolecular Science and Institute of Fiber Materials and Devices Fudan University Department of Cardiology Shanghai Xuhui Central HospitalZhongshan-Xuhui Hospital Fudan University Research Center for Advanced Science and Technology and Institute of Industrial Science The University of Tokyo

Fiber electronics with flexible and weavable features can be easily integrated into textiles for wearable applications. However, due to small sizes and curved surfaces of fiber materials, it remains challenging to load robust active layers, thus hindering production of high-sensitivity fiber strain sensors. Herein, functional sensing materials are firmly anchored on the fiber surface in-situ through a hydrolytic condensation *** anchoring sensing layer with robust interfacial adhesion is ultra-mechanically sensitive, which significantly improves the sensitivity of strain sensors due to the easy generation of microcracks during stretching. The resulting stretchable fiber sensors simultaneously possess an ultra-low strain detection limit of 0.05%, a high stretchability of 100%, and a high gauge factor of 433.6, giving 254-folds enhancement in sensitivity. Additionally, these fiber sensors are soft and lightweight, enabling them to be attached onto skin or woven into clothes for recording physiological signals, e.g. pulse wave velocity has been effectively obtained by them. As a demonstration, a fiber sensor-based wearable smart healthcare system is designed to monitor and transmit health status for timely intervention. This work presents an effective strategy for developing high-performance fiber strain sensors as well as other stretchable electronic devices.

关键词： fiber strain sensor stretchable wearable healthcare

来源：评论

学校读者我要写书评

暂无评论

Reversible solid-liquid conversion enabled by self-capture effect for stable non-flow zinc-bromine batteries

引用

Green Energy & Environment 2024年第6期9卷 1035-1044页

作者： Xixi Zhang Xiaoke Wang Guangmeng Qu Tairan Wang Xiliang Zhao Jun Fan Cuiping Han Xijin Xu Chunyi Zhi Hongfei Li School of Physics and Technology University of JinanShandong250022China Songshan Lake Materials Laboratory DongguanGuangdong523808China Department of Materials Science and Engineering City University of Hong Kong83 Tat Chee AvenueHong KongChina Faculty of Materials Science and Engineering and Low Dimensional Energy Materials Research Center Shenzhen Institute of Advanced TechnologyChinese Academy of SciencesShenzhenGuangdong518055China School of System Design and Intelligent Manufacturing Southern University of Science and TechnologyShenzhenGuangdong518055China

Non-flow aqueous zinc-bromine batteries without auxiliary components(e.g.,pumps,pipes,storage tanks)and ion-selective membranes represent a cost-effective and promising technology for large-scale energy ***,they generally suffer from serious diffusion and shuttle of polybromide(Br^(-),Br^(3-))due to the weak physical adsorption between soluble polybromide and host carbon materials,which results in low energy efficiency and poor cycling ***,we develop a novel self-capture organic bromine material(1,10-bis[3-(trimethylammonio)propyl]-4,4'-bipyridinium bromine,NVBr4)to successfully realize reversible solid complexation of bromide components for stable non-flow zinc-bromine battery *** quaternary ammonium groups(NV^(4+)ions)can effectively capture the soluble polybromide species based on strong chemical interaction and realize reversible solid complexation confined within the porous electrodes,which transforms the conventional“liquid-liquid”conversion of soluble bromide components into“liquid-solid”model and effectively suppresses the shuttle ***,the developed non-flow zinc-bromide battery provides an outstanding voltage platform at 1.7 V with a notable specific capacity of 325 mAh g^(-1)NVBr4(1 A g^(-1)),excellent rate capability(200 mAh g^(-1)NVBr4 at 20 A g^(-1)),outstanding energy density of 469.6 Wh kg^(-1)and super-stable cycle life(20,000 cycles with 100%Coulombic efficiency),which outperforms most of reported zinc-halogen *** mechanism analysis and DFT calculations demonstrate that the chemical interaction of quaternary ammonium groups and bromide species is the main reason for suppressing the shuttle *** developed strategy can be extended to other halogen batteries to obtain stable charge storage.

关键词： Solid-liquid conversion Self-capture Non-ﬂow zinc-bromine batteries Quaternary ammonium

来源：评论

学校读者我要写书评

暂无评论

Interactions between Pre-strain and Dislocation Structures and Its Effect on the Hydrogen Trapping Behaviors

引用

Acta Metallurgica Sinica(English Letters) 2023年第7期36卷 1193-1202页

作者： Rongjian Shi Yanqi Tu Liang Yang Saiyu Liu Shani Yang Kewei Gao Xu-Sheng Yang Xiaolu Pang Beijing Advanced Innovation Center for Materials Genome Engineering School of Materials Science and EngineeringUniversity of Science and Technology BeijingBeijing100083China School of Mathematics and Physics University of Science and Technology BeijingBeijing100083China Department of Industrial and Systems Engineering The Hong Kong Polytechnic UniversityHung HomKowloonHong KongChina Hong Kong Polytechnic University Shenzhen Research Institute Shenzhen518057China Key Laboratory for Advanced Materials of Ministry of Education School of Materials Science and EngineeringTsinghua UniversityBeijing100084China

This work investigated the effect of pre-strain and microstructures and their interactions on hydrogen trapping behaviors in case of 1-GPa high-strength martensitic steel Fe-0.05C-0.30Si-1.10Mn-3.50Ni-0.53Cr-0.50Mo-0.03 V(wt%).We found that the trapped reversible and trapped irreversible hydrogen contents increased significantly after applying a pre-strain of 5%,with an increase in the trapped reversible hydrogen content from 0.6 ppm in the original sample to 2.1 *** hydrogen desorption activation energy also showed a slight *** microstructural evolution revealed that the concomitant dislocation cell-twin duplex microstructure with high-density tangled dislocations after pre-strain substantially increased the trapped reversible hydrogen ***,the tangled dislocations pinned by the nanoprecipitates acted as deep irreversible hydrogen traps,increasing the trapped hydrogen at high temperatures after applying 5%*** findings provide an expanded understanding of the hydrogen trapping behaviors of pre-strained microstructures.

关键词： Hydrogen embrittlement Hydrogen trapping Pre-strain Deformed microstructure High-strength steel

来源：评论

学校读者我要写书评

暂无评论

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案：

请选择收藏分类：

通借通还

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：