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Multi-action self-healing coatings with simultaneous recovery of corrosion resistance and adhesion strength

Journal of Materials science & technology 2022年第6期101卷 18-27页

作者： Chenhao Ren Yao Huang Wenkui Hao Dawei Zhang Xiejing Luo Lingwei Ma Jinke Wang Thee Chowwanonthapunya Chaofang Dong Xiaogang Li Beijing Advanced Innovation Center for Materials Genome Engineering Institute for Advanced Materials and TechnologyUniversity of Science and Technology BeijingBeijing 100083China National Materials Corrosion and Protection Data Center University of Science and Technology BeijingBeijing 100083China State Key Laboratory of Advanced Power Transmission Technology(Global Energy Interconnection Research Institute Co.Ltd.) Beijing 100083China Faculty of International Maritime Studies Kasetsart UniversitySriracha Campus199 TungsuklaSrirachaChonburi 20230Thailand BRI Southeast Asia Network for Corrosion and Protection(MOE) Shunde Graduate School of University of Science and Technology BeijingFoshan 528300China

In this study, a new self-healing strategy that can simultaneously recover the corrosion resistance and the adhesion strength of coatings was introduced. The coating was based on a shape memory epoxy resin containing ethylene vinyl acetate(EVA) microspheres loaded with Ce(NO_(3))_(3)inhibitors, and was cured at a relatively high temperature to facilitate the fusion of adjacent microspheres for a strengthened self-healing effect. The electrochemical impedance spectroscopy(EIS) and scanning electrochemical microscopy(SECM) results demonstrated that the shape memory effect of epoxy matrix, the filling of molten EVA microspheres as well as the release of Ce(NO_(3))_(3)inhibitors contributed synergistically to suppress the corrosion reaction at the coating damage. After healing, the low frequency impedance modulus of the coatings containing Ce(NO_(3))_(3)-EVA microspheres was three orders of magnitude higher than that of the blank epoxy coating. The adhesion strength of the coatings containing Ce(NO_(3))_(3)-EVA microspheres on the metal substrate was also largely repaired thanks to the strong bonding effect of the EVA microspheres.

关键词： Self-healing coating Corrosion protection Adhesion strength Shape memory effect Bonding effect

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Nb-In Direct Bonding at Room Temperature Using Surface Activated Bonding 8

Nb-In Direct Bonding at Room Temperature Using Surface Activ...

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8th International Workshop on Low Temperature Bonding for 3D Integration, LTB-3D 2024

作者： Ishiyama, Shoei Fujino, Masahisa Nakagawa, Hiroshi Araga, Yuuki Kikuchi, Katsuya Taino, Tohru Graduate School of Science and Engineering Saitama University 255 Shimoookubo Sakura-ku Saitama-shi Saitama338-8570 Japan SFRC National Institute of Advanced Industrial Science and Technology 1-1-1 Umezono Tsukuba-shi Ibaraki305-8560 Japan

Bump-shaped of 50μm diameter Nb-In direct bonding at room temperature was performed using a surface activated bonding. The bonding was succeeded, and daisy chain of 2809 bonded bumps through Nb-In interface confirms ... 详细信息

ISBN: (纸本)9798331519919

关键词： Niobium

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Bistable Resistive Switches fabricated by Unidirectional Floating Film Transfer Method 30

Bistable Resistive Switches fabricated by Unidirectional Flo...

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30th International Workshop on Active-Matrix Flatpanel Displays and Devices: TFT Technologies and FPD Materials, AM-FPD 2023

作者： Sharma, Shubham Kumari, Nikita Pandey, Shyam S. Kyushu Institute of Technology Graduate School of Life Science and Systems Engineering 2-4 Hibikino Kitakyushu Wakamatsu808-016 Japan Nara Advanced Institute of Science and Technology Division of Materials Science 8916-5 Ikoma Nara630-0192 Japan

ISBN: (纸本)9784991216947

The unidirectional floating-film transfer method (UFTM) was utilized for the coating-oriented thin films of conjugated polymers (CPs), and resistive memory switches were fabricated by sandwiching a layer of metal nanostructures between them. Resistive switching phenomena were realized by utilizing the applied bias-dependent charge trapping, holding, and recombination on the available states at vacuum deposited Aluminum nanostructures. PTB-7 was used as the representative of CP owing to its face-on oriented molecular assembly formation under UFTM, allowing facile vertical charge transport. Oriented UFTM thin films with sandwiched Al nanostructure demonstrated excellent devices with an on-off ratio of 5.7 × 107. © 2023 FTFMD.

关键词： Conjugated polymers

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Synthesis of crystalline carbon nitride with enhanced photocatalytic NO removal performance:An experimental and DFT theoretical study

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Journal of Materials science & technology 2021年第24期83卷 113-122页

作者： Zhanyong Gu Zhitao Cui Zijing Wang Tingru Chen Peng Sun Dawei Wen Institute of Multidisciplinary Research for Advanced Materials Tohoku UniversitySendai9808578Japan School of Materials Science and Engineering Anhui University of TechnologyMaanshan243002China School of Materials Science and Engineering University of Science and Technology BeijingBeijing100083China School of Applied Physics and Materials Wuyi UniversityJiangmen529020China

The pristine carbon nitride derived from the thermally-induced polymerization of nitrogen-containing precursors(***,dicyanamide,melamine and urea)displays low crystallinity because of the predominantly kinetic ***,we reported a modified molten-salts method to fabricate the crystalline carbon nitride under ambient pressure,which is expected to the large-scale production of crystalline carbon *** obtained crystalline carbon nitride displayed about 3.0 times higher photocatalytic NO removal performance than that of pristine carbon nitride under visible light irradiation(λ<400 nm).Detailed experimental characterization and theoretical calculation revealed the crucial roles of crystallinity in crystalline carbon nitride for the enhanced photocatalytic NO removal *** research provided deep insights into the crystallinity of carbon nitride for the enhanced photocatalytic performance.

关键词： Carbon nitride Crystallinity Molten-salts method Photocatalytic NO removal DFT

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A Software-Hardware Co-Optimized Sense Amplifier for 2T1C Cell-based DRAM In-Memory-Computing

A Software-Hardware Co-Optimized Sense Amplifier for 2T1C Ce...

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International SoC Design Conference, ISOCC

作者： Sunjoo Whang Soyeon Um Sangwoo Ha Hoi-Jun Yoo Graduate School of AI Semiconductor Korea Advanced Institute of Science and Technology (KAIST) Daejeon Republic of Korea School of Electrical Engineering Korea Advanced Institute of Science and Technology (KAIST) Daejeon Republic of Korea

ISBN: (数字)9798350377088

ISBN: (纸本)9798350377095

This paper presents a software-hardware (SW-HW) co-optimization approach for DRAM in-memory computing, significantly reducing sense amplifier read power in 2T1C cell systems. By transitioning from 2's complement to signed magnitude representation, data '0' prevalence increased from 52% to 73%, achieving a 13% reduction in read power. A novel sense amplifier design incorporating a variable reference voltage contributed a further 15% power reduction. This co-optimization strategy resulted in a total read power decrease of 26% compared to the baseline, demonstrating substantial improvements in energy efficiency for memory-intensive computing environments.

关键词： Random access memory Voltage In-memory computing Energy efficiency

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A Fast SerDes Equalizer Effect-Included Worst Eye Diagram Estimation Method for High-Speed Serial Links

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IEEE Transactions on Components, Packaging and Manufacturing technology 2025年

作者： Lee, Seonghi Ryu, Seunghun Lee, Sanguk Kim, Hyunwoong Woo, Seongho Park, Dongryul Kim, Hyunwoo Park, Jiyoung Lee, Yongho Nam, Seungki Moon, Sungwook Kim, Jiseong Ahn, Seungyoung Korea Advanced Institute of Science and Technology Cho Chun Shik Graduate School of Mobility Daejeon34051 Korea Republic of Samsung Electronics Hwaseong18448 Korea Republic of Korea Advanced Institute of Science and Technology School of Electrical Engineering Daejeon34051 Korea Republic of

In this paper, a fast SerDes equalizer effect-included worst eye diagram estimation method is proposed for high-speed serial links. The proposed approach analytically integrates the effects of linear and nonlinear equalizers in the frequency and time domains, respectively, based on the behavior of the equalizers. This approach enables fast single-bit response (SBR) calculations without requiring input/output buffer information specifications, i.e., an algorithmic model interface (IBIS-AMI) model-based transient simulation. Additionally, a modified peak distortion analysis (PDA)-based worst eye estimation method was employed, including the outer contours. To validate the proposed method, tests were conducted in a peripheral component interconnect express (PCIe) Gen 6.0 channel environment configured with various equalizer combinations and different loss conditions. The proposed method achieves eye contour results comparable to those in conventional circuit simulations, operating up to 255 times faster than bit-by-bit methods and up to 66 times faster than statistical methods. The proposed method offers significant advantages in environments that require rapid exploration of optimal channel and equalizer combinations, providing substantial time savings and efficient evaluations. © 2011-2012 IEEE.

关键词： Equalizers

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Structure Impact on Phase Transition in Complex Dynamical Networks

Structure Impact on Phase Transition in Complex Dynamical Ne...

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2022 IEEE International Conference on Unmanned Systems, ICUS 2022

作者： Sun, Zhenxin Chen, Lei Liu, Gaoxiang Qin, Tong Zheng, Dezhi Advanced Research Institute of Multidisciplinary Science Beijing Institute of Technology Beijing China School of Information and Electronics Beijing Institute of Technology Beijing China School of Automation Science and Electrical Engineering Beihang University Beijing China

ISBN: (数字)9781665484565

ISBN: (纸本)9781665484565

The consistency problem of large-scale complex clusters is closely related to the phase transition problem of complex networks. The structure of complex networks mainly affects the phase transition of complex networks. In this paper, a concise model of self-driven motion is adopted. Firstly, through simulation analysis, it is verified that density and noise are two main factors affecting the phase change consistency of complex network. Secondly, the influence of average degree of complex networks on phase transition consistency of complex networks is further analyzed. Finally, based on the research on the average degree of complex networks, the influence of the proportion of pinned nodes on the phase transition consistency of complex networks is explored in depth. At the same time, the effect of the average degree of complex networks and the proportion of pinned nodes on the phase transition consistency of complex networks is analyzed. © 2022 IEEE.

关键词： Complex networks

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Facet-engineered growth of non-layered 2D manganese chalcogenides

Advanced Powder Materials

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advanced Powder Materials 2024年第2期3卷 1-8页

作者： Jingwei Wang Junyang Tan Liqiong He Zhenqing Li Shengnan Li Yunhao Zhang Huiyu Nong Qinke Wu Qiangmin Yu Xiaolong Zou Hui-Ming Cheng Bilu Liu Shenzhen Geim Graphene Center Tsinghua-Berkeley Shenzhen Institute and Institute of Materials ResearchShenzhen International Graduate SchoolTsinghua UniversityShenzhen518055China Shenyang National Laboratory for Materials Science Institute of Metal ResearchChinese Academy of SciencesShenyang110016China Faculty of Materials Science and Engineering/Institute of Technology for Carbon Neutrality Shenzhen Institute of Advanced TechnologyChinese Academy of SciencesShenzhen518055China

Non-layered two-dimensional(2D)materials have sparked much interest recently due to their atomic thickness,large surface area,thickness-and facet-dependent ***,these materials are mainly grown from wet-chemistry methods but suffer from small size,low quality,and multi-facets,which is a major challenge hindering their facet-dependent property studies and ***,we report the facet-engineered growth(FEG)of non-layered 2D manganese chalcogenides(MnX,X=S,Se,Te)based on the chemical vapor deposition *** as-grown samples exhibit large-area surfaces of single facet,high-crystallinity,and ordered domain *** a proof-of-concept,we show the facet-dependent electrocatalytic property of non-layered 2D MnSe,proving they are ideal candidates for fundamental ***,we elucidate the underlying mechanism of FEG during the vapor growth process by the interfacial energy derived nucleation *** method developed in this work provides new opportunities for regulating and designing the structure of 2D materials.

关键词： Non-layered two-dimensional materials Transition metal chalcogenides Chemical vapor deposition High temperature epitaxial growth Facet engineering

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Optimization of the in vitro biodegradability,cytocompatibility,and wear resistance of the AZ31B alloy by micro-arc oxidation coatings doped with zinc phosphate

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Journal of Materials science & technology 2024年第12期179卷 224-239页

作者： Chao Yang Suihan Cui Ricky KYFu Liyuan Sheng Min Wen Daokui Xu Ying Zhao Yufeng Zheng Paul KChu Zhongzhen Wu School of Advanced Materials Peking University Shenzhen Graduate SchoolShenzhen 518055China Department of Physics Department of Materials Science&Engineeringand Department of Biomedical EngineeringCity University of Hong KongTat Chee AvenueKowloonHong Kong 999077China Shenzhen Institute Peking UniversityShenzhen 518057China PKU-HKUST Shenzhen–Hong Kong Institution Shenzhen 518057China Key Laboratory of Nuclear Materials and Safety Assessment Institute of Metal ResearchChinese Academy of SciencesShenyang 110016China Shenzhen Institutes of Advanced Technology Chinese Academy of SciencesShenzhen 518055China National Engineering Research Center of Light Alloy Net Forming and State Key Laboratory of Metal Matrix Composite Shanghai Jiao Tong UniversityShanghai 200240China

As implanted bone fixation materials,magnesium(Mg)alloys have significant advantages because the density and elastic modulus are closest to those of the human bone and they can bio-degrade in the physiological ***,Mg alloys degrade too rapidly and uncontrollably thus hampering clinical *** this study,a highly corrosion-resistant zinc-phosphate-doped micro-arc oxidation(MAO)coating is prepared on the AZ31B alloy,and the degradation process is assessed in *** increasing zinc phosphate concentrations,both the corrosion potentials and charge transfer resistance of the AZ31B alloy coated with MAO coatings increase gradually,while the corrosion current densities di-minish *** tests in the simulated body fluid(SBF)reveal that the increased zinc phos-phate concentration in MAO coating decreases the degradation rate,consequently reducing the release rates of Mg^(2+)and OH-in the physiological micro-environment,which obtains the lowest weight loss of only 5.22%after immersion for 56 *** regulation of degradation provides a weak alkaline environment that is suitable for long-term cell growth and subsequent promotion of bone proliferation,differentiation,mineralization,and *** addition,the zinc-phosphate-doped MAO coat-ings show an improved wear resistance as manifested by a wear rate of only 3.81 x 10^(-5) mm^(3) N^(-1) m^(-1).The results reveal a suitable strategy to improve the properties of biodegradable Mg alloys to balance tissue healing with mechanical degradation.

关键词： Mg alloys MAO coatings Degradation regulation Cytocompatibility Wear resistance

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A Stable Diffusion Based Image Generation Method for Few-Shot Emerging Pest Detection in the Wild 25

A Stable Diffusion Based Image Generation Method for Few-Sho...

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25th IEEE International Conference on Industrial technology, ICIT 2024

作者： Wang, Xiaodong Wang, Rujing Wu, Shilian Ma, Xiao Du, Jianming Gao, Junjie Institute Of Intelligent Machines Hefei Institutes Of Physical Science Chinese Academy Of Sciences Intelligent Agriculture Engineering Laboratory Of Anhui Province Hefei230031 China Graduate School Of University Of Science And Technology Of China Science Island Branch Hefei230026 China University Of Science And Technology Of China Hefei230026 China School Of Computer Science And Engineering Nanjing University Of Science And Technology Nanjing210094 China Shanghai Advanced Research Institute Chinese Academy Of Sciences Shanghai201210 China

ISBN: (纸本)9798350340266

Detecting few-shot emerging pests in the wild presents a significant challenge in the field of agricultural computer vision. However, there has been minimal research focused on generating emerging pest images with different natural scenarios that align with the authentic pest living environments. With the advent of the controllable generative stable diffusion model recent years, we proposed an innovative image generation method based on stable diffusion techniques as well as introducing text prompt and coordinate information into the vanilla model. Both qualitative and quantitative experimental results demonstrate that our proposed approach can generate anthropomorphic images which are both visually recognized by human experts and various image quality assessment performance metrics. © 2024 IEEE.

关键词： Diffusion

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