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International Conference on (ICEPT) Electronic Packaging technology

作者： Yang Wu Song Pan Ben Wang Zhijie Zhang Leida Chen Xi’an Microelectronics Technology Institute Xi’an Xi’an China Key Laboratory of Advanced Welding Technology of Jiangsu Province Jiangsu University of Science and Technology Zhenjiang China

Nickel is widely used as under bump metallization (UBM) in electronic packaging technology, due to its excellent electrical properties, processing performance, and wear resistance. However, its thermal stability and corrosion resistance are relatively poor, which limits its application in harsh environments such as high temperature and high humidity. Therefore, improving the thermal stability and corrosion resistance of Ni UBM is a critical issue. To improve the thermal stability of Ni UBM, various methods have been reported, including alloying, controlling coating thickness, and controlling microstructure. Among them, controlling microstructure is considered one of the most effective ways to enhance the thermal stability of Ni UBM. Many studies have shown that the introduction of nano-twin structures can significantly enhance the thermal stability of metals. In this study, we investigated the effect of high-density nano-twins on the thermal stability of Ni UBM. We achieved a high-density nano-twinned Ni film by electroplating, which was characterized by X-ray diffraction. The thermal stability of nano-twinned Ni film was characterized by annealing at temperatures of 350°C and 400°C for 2-12 hours, respectively. The results showed that even annealing at 400°C for 12 hours, the average grain size of nanocrystalline Ni increased from ~30 nm to 0.93 μm, while maintaining a strong <111> texture. This indicates the introduction of high-density nano-twins significantly improved the thermal stability of Ni UBM. The nano-twinned structure effectively suppressed grain growth during the annealing process. This study provided a new direction for designing and optimizing the microstructure of Ni UBM to achieve better thermal stability and performance. The results of this study could help to develop advanced Ni UBM with enhancing thermal stability and performance, thus contributing to the improvement of the reliability of microelectronic interconnection technology in electronic

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Real-time Terrain Recognition based on Transformer and Gait Prediction based on CNN-LSTM-Attention for Exosuit

Real-time Terrain Recognition based on Transformer and Gait ...

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2023 IEEE International Conference on Real-Time Computing and robotics, RCAR 2023

作者： Yang, Fangliang Chen, Chunjie Wang, Zhuo Xu, Yinsheng Liu, Yao Wu, Xinyu University of Chinese Academy of Sciences Shenzhen College of Advanced Technology Shenzhen518055 China Shenzhen Institute of Advanced Technology Chinese Academy of Sciences Guangdong Provincial Key Lab of Robotics and Intelligent System Shenzhen518055 China Guangdong-Hong Kong-Macao Joint Laboratory of Human-Machine Intelligence-Synergy Systems Shenzhen518055 China Guilin University of Technology Guilin541004 China

ISBN: (纸本)9798350327182

For wearable soft exosuits, an imprecise control strategy can easily injure the wearer, while real-time terrain recognition and accurate gait phase estimation can effectively improve the control strategy of the exosuit and make the wearer comfortable and safe. In this paper, a real-time terrain recognition algorithm based on Transformer and a gait estimation algorithm based on CNN-LSTM-Attention are implemented. The Transformer-based recognition of different terrains improves the recognition accuracy to some extent, and the CNN-LSTM-Attention based feature extraction for temporal signals such as gait phase is also extremely noticeable. Experiments show that the Transformer-based algorithm achieves 99.64 % recognition accuracy in six different terrain environments. In the gait phase estimation experiment, CNN-LSTM-CBAM achieved the best performance with an evaluation index r2 of 0.9221. The aforementioned terrain recognition algorithms and gait phase estimation algorithms may have a positive impact on soft exosuit and dynamic prosthetics research. © 2023 IEEE.

关键词： Landforms

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Study on High Temperature Form-Stable Metallic Composite Materials for Energy Storage 19th

Study on High Temperature Form-Stable Metallic Composite Mat...

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19th Annual Conference of China Electrotechnical Society, ACCES 2024

作者： Chaomurilige Zhang, Xiaoqiang Qiao, Geng Liu, Jiaxing Zhao, Zhehui Yao, Jiakang Zhao, Guangyao Guo, Dongliang Energy Storage Materials and Technology Global Energy Interconnection Research Institute Europe GmbH Berlin Germany State Key Laboratory of Advanced Power Transmission Technology State Grid Smart Grid Research Institute Co. Ltd Beijing China State Grid Jiangsu Electric Power Co. Ltd Research Institute Nanjing China

ISBN: (纸本)9789819613908

This study investigates the potential of metallic composite materials for energy storage applications, emphasizing their high thermal conductivity and energy density. The research focuses on the synthesis of Al-Si/C composite materials using graphite and aluminum-silicon alloy powders. Various characterization techniques, including X-ray diffraction and differential scanning calorimetry (DSC), were employed to analyze the material’s properties, such as latent heat and thermal stability. The study identifies optimal material ratios and processing conditions to enhance performance. The findings suggest that Al-Si/C composites are promising candidates for efficient energy storage solutions. © Beijing Paike Culture Commu. Co., Ltd. 2025.

关键词： Silicon alloys

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Special issue on application of Al in steelmaking and ferrous materials

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Journal of Iron and Steel Research International 2023年第5期30卷 849-850页

作者： Wangzhong Mu Jie Sun Hong-hui Wu Shun-hu Zhang Department of Materials Science and Engineering KTH Royal Institute of TechnologyStockholm 10044Sweden State Key Laboratory of Rolling and Automation Northeastern UniversityShenyang 110819LiaoningChina Beijing Advanced Innovation Center for Materials Genome Engineering Innovation Research Institute for Carbon NeutralityUniversity of Science and Technology BeijingBeijing 100083China Shagang School of Iron and Steel Soochow UniversitySuzhou 215021JiangsuChina

It is well known that metallurgy is one of the key industries for national economic ***,state-ofthe-art information technologies,like artificial intelligence(AI),industrial big data,etc.,are of vital importance for economic and social development to meet the intelligentization of metallurgical processes and to promote intelligent *** techniques are also boosting the transformation and upgrading of traditional manufacturing ***-based intelligent manufacturing process,integrating the technologies of advanced manufacturing and the new generation of informatics,is a new opportunity for further innovation and development of global metallurgical industries.

关键词： integrating boosting intelligent

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ZnO@Mo-CNT-MnO_(2)纳米阵列用于构筑超高倍率性能的柔性非对称超级电容器

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Science China Materials 2023年第6期66卷 2207-2215页

作者：庄绍杰彭新元裴锋孙骆叶志国黄军同李多生金钟 School of Materials Science and Engineering Nanchang Hangkong UniversityNanchang 330063China State Grid Jiangxi Electric Power Research Institute Nanchang 330096China State Key Laboratory of Coordination Chemistry MOE Key Laboratory of Mesoscopic ChemistryMOE Key Laboratory of High Performance Polymer Materials and TechnologyJiangsu Key Laboratory of Advanced Organic MaterialsSchool of Chemistry and Chemical EngineeringNanjing UniversityNanjing 210023China

MnO_(2)作为超级电容器电极材料具有理论比电容高、成本低、环境友好等优点,但其低导电性和低利用率阻碍了其潜在应用.本研究首先在柔性碳布上电化学生长ZnO纳米棒阵列作为电极衬底,然后通过阳极电沉积法在ZnO纳米棒阵列表面外延生长了M... 详细信息

MnO_(2)作为超级电容器电极材料具有理论比电容高、成本低、环境友好等优点,但其低导电性和低利用率阻碍了其潜在应用.本研究首先在柔性碳布上电化学生长ZnO纳米棒阵列作为电极衬底,然后通过阳极电沉积法在ZnO纳米棒阵列表面外延生长了Mo和碳纳米管(CNTs)共掺杂的MnO_(2)薄膜,可控构筑了有效、高导电性的MnO_(2)纳米阵列电极(定义为ZnO@Mo-CNT-MnO_(2)NA).柔性ZnO@Mo-CNTMnO_(2)NA电极在100 A g^(-1)的大电流充放电密度下比电容可达237.5 F g^(-1),10,000次循环后电容保留率高达86%.采用ZnO@Mo-CNTMnO_(2)NA电极组装成水系非对称超级电容器,弯曲状态下在132.35 mW cm^(-3)(5mA cm^(-2))高功率密度下获得了1.13 mW h cm^(-3)的高能量密度,5mA cm^(-2)充放电倍率下循环7600次后电容保留率高达88%.本研究构筑的MnO_(2)基纳米阵列电极结构可提高其电导率和利用率,为柔性金属氧化物超级电容器电极的设计与制备提供新途径.

关键词： ZnO纳米棒阵列纳米阵列金属氧化物弯曲状态超级电容器高倍率性能高能量密度比电容

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Effect of Ultrasonic Vibration Assisted Adhesive Injection Process on Pressure at Bonding Interface 9

Effect of Ultrasonic Vibration Assisted Adhesive Injection P...

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9th International Conference on Mechanical Engineering, Materials, and Automation technology, MMEAT 2023

作者： Wang, Hui Feng, Jindong Chen, Yizhe Liu, Zhaoyi Hubei Key Laboratory of Advanced Technology for Automotive Components Wuhan University of Technology Wuhan430070 China College of Automotive Engineering Wuhan University of Technology Wuhan430070 China Hubei Longzhong Laboratory Xiangyang441000 China Jiangsu Xinyang New Material Co. Ltd. Yangzhou225000 China GUANGRUIAUTOPARTS Xiangyang441000 China

ISBN: (纸本)9781510668584

In order to explore the mechanism of an ultrasonic vibration assisted adhesive injection process on strengthening the interface bonding, a pressure measurement experiment platform was built in this paper. The pressure variations of adhesive at the interface were measured during the process of three different bonding methods, including the manual adhesive coat, the adhesive injection, and the ultrasonic vibration assisted adhesive injection with different parameter levels. The effect of the ultrasonic vibration assisted adhesive injection and the parameters on the pressure at the bonding interface was analyzed. The high pressure of the adhesive at the interface was caused by the ultrasonic vibration assisted adhesive injection, which mainly arose from the external molding pressure, and the maximum pressure was 508.1 kPa. The same frequency vibration of the adhesive was caused by the ultrasonic vibration assisted adhesive injection, so that the adhesive had a pulse impact contact on the adherend surface. The larger the amplitude of ultrasonic vibration was, the stronger the same frequency vibration was. Meanwhile, the fluidity of the adhesive was improved by the ultrasonic vibration. © 2023 SPIE.

关键词： Adhesives

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Recent progress on surface chemistryⅡ:Property and characterization

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Chinese Chemical Letters 2025年第1期36卷 8-57页

作者： Xin Li Zhen Xu Donglei Bu Jinming Cai Huamei Chen Qi Chen Ting Chen Fang Cheng Lifeng Chi Wenjie Dong Zhenchao Dong Shixuan Du Qitang Fan Xing Fan Qiang Fu Song Gao Jing Guo Weijun Guo Yang He Shimin Hou Ying Jiang Huihui Kong Baojun Li Dengyuan Li Jie Li Qing Li Ruoning Li Shuying Li Yuxuan Lin Mengxi Liu Peinian Liu Yanyan Liu Jingtao Lü Chuanxu Ma Haoyang Pan JinLiang Pan Minghu Pan Xiaohui Qiu Ziyong Shen Qiang Sun Shijing Tan Bing Wang Dong Wang Li Wang Lili Wang Tao Wang Xiang Wang Xingyue Wang Xueyan Wang Yansong Wang Yu Wang Kai Wu Wei Xu Na Xue Linghao Yan Fan Yang Zhiyong Yang Chi Zhang Xue Zhang Yang Zhang Yao Zhang Xiong Zhou Junfa Zhu Yajie Zhang Feixue Gao Yongfeng Wang Center for Carbon-based Electronics and Key Laboratory for the Physics and Chemistry of Nanodevices School of ElectronicsPeking UniversityBeijing 100871China Spin-X Institute School of MicroelectronicsSouth China University of TechnologyGuangzhou 511442China School of Materials and Energy Guangzhou Key Laboratory of Low-Dimensional Materials and Energy Storage DevicesGuangdong University of TechnologyGuangzhou 510006China Faculty of Materials Science and Engineering Kunming University of Science and TechnologyKunming 650093China i-Lab CAS Key Laboratory of Nanophotonic Materials and DevicesSuzhou Institute of Nano-Tech and Nano-BionicsChinese Academy of SciencesSuzhou 215123China CAS Key Laboratory of Molecular Nanostructure and Nanotechnology CAS Research/Education Center for Excellence in Molecular SciencesBeijing National Laboratory for Molecular Sciences(BNLMS)Institute of ChemistryChinese Academy of SciencesBeijing 100190China State Key Laboratory for Organic Electronics and Information Displays&Jiangsu Key Laboratory for Biosensors Institute of Advanced MaterialsJiangsu National Synergetic Innovation Center for Advanced MaterialsNanjing University of Posts and TelecommunicationsNanjing 210023China Institute of Functional Nano and Soft Materials(FUNSOM) Jiangsu Key Laboratory for Carbon-Based Functional Materials and DevicesSoochow UniversitySuzhou 215123China Hefei National Research Center for Physical Sciences at the Microscale and Synergetic Innovation Center of Quantum Information and Quantum Physics University of Science and Technology of ChinaHefei 230026China Institute of Physics&University of Chinese Academy of Sciences Beijing 100190China State Key Laboratory of Catalysis Dalian Institute of Chemical PhysicsChinese Academy of SciencesDalian 116023China College of Chemistry Beijing Normal UniversityBeijing 100875China Beijing National Laboratory for Molecular Sciences(BNLMS) College of Chemistry and Molecular EngineeringPeking UniversityBeijing 100871China School

Surface with well-defined components and structures possesses unique electronic,magnetic,optical and chemical *** a result,surface chemistry research plays a crucial role in various fields such as catalysis,energy,materials,quantum,and *** science mainly investigates the correspondence between surface property and *** probe microscopy(SPM)techniques are important tools to characterize surface properties because of the capability of atomic-scale imaging,spectroscopy and manipulation at the single-atom *** this review,we summarize recent advances in surface electronic,magnetic and optical properties characterized mainly by SPM-based *** focus on elucidating theπ-magnetism in graphene-based nanostructures,construction of spin qubits on surfaces,topology properties of surface organic structures,STM-based light emission,tip-enhanced Raman spectroscopy and integration of machine learning in SPM studies.

关键词： Surface chemistry Scanning probe microscopy π-Magnetism Spin qubits Tip-enhanced Raman spectroscopy

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Repairing Surface Defects of Carbon Fibers: Electrostatic Spraying Nano-Carbons on Stabilized Pan-Fibers and Subsequent Thermal Annealing

SSRN

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SSRN 2024年

作者： Ma, Tianshuai Shao, Ruiqi Siddique, Amna Wang, Wei Li, Tianyu Jiang, Wanwei Pei, Xiaoyuan Xu, Zhiwei State Key Laboratory of Separation Membranes and Membrane Processes School of Textile Science and Engineering Tiangong University Tianjin300387 China Department of Textile Technology National Textile University Sheikhupura Road Faisalabad37610 Pakistan Jiangsu Advanced Textile Engineering Technology Center Jiangsu College of Engineering and Technology Jiangsu226007 China Key Laboratory of Advanced Braided Composites China

The introducing of nanomaterials on the carbon fibers (CFs) surface is an effective method for repairing surface defects. Due to the chemical inertness of CFs surface, the bonding force between reinforcing material and CFs is weak. In this paper, stabilized fibers (SFs) were assembled with nano-carbons (graphene oxide and graphene quantum dots) through electrostatic spraying assisted by airflow and then thermally annealed to repair surface defects of CFs. The nano-carbons were directionally covered on or filled in defects on fibers surface, respectively. The tensile strength and Younǵs modulus of CFs with nano-carbons increased significantly. The results of X-ray photoelectron spectroscopy and atomistic ReaxFF molecular dynamics simulation indicated that covalent crosslinking occurred between CFs surface and nano-carbons. Nano-scratch revealed a significant increase in the bonding force between nano-carbons and fiber surface after thermal annealing, which further proved the formation of abundant covalent crosslinking. Subsequently, finite element simulation was used to demonstrate that the addition of nano-carbons alleviated stress concentration at defects on CFs surface. At the same time, smaller stress and stress diffusion were found in CFs reinforced by graphene oxide than that with graphene quantum dots. © 2024, The Authors. All rights reserved.

关键词： Surface defects

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Rapid preparation of graphene-skinned glass fiber fabric based on propane as carbon source

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Nano Research 2025年第3期18卷 1-8页

作者： Longfei Liu Jianjian Shi Wenjuan Li Kangyi Zheng Hao Yuan Fushun Liang Ruojuan Liu Yuyao Yang Fan Yang Shuting Cheng Wenjing Jiang Qingxu Su Jingnan Wang Yuejie Zhao Mengxiong Liu Ce Tu Mengwei Li Xiaobai Wang Xiaoli Sun Yue Qi Zhongfan Liu Academy for Advanced Interdisciplinary Research North University of ChinaTaiyuan 030051China Beijing Graphene Institute(BGI) Beijing 100095China School of Electronic Engineering Chengdu Technological UniversityChengdu 611730China Centre for Nanochemistry Beijing Science and Engineering Centre for NanocarbonsBeijing National Laboratory for Molecular SciencesCollege of Chemistry and Molecular EngineeringPeking UniversityBeijing 100871China College of Energy Soochow Institute for Energy and Materials Innovations(SIEMIS)Jiangsu Provincial Key Laboratory for Advanced Carbon Materials and Wearable Energy TechnologiesSoochow UniversitySuzhou 215006China School of Population and Health Renmin University of ChinaBeijing 100872China Department of Chemistry School of Light Industry Science and EngineeringBeijing Technology and Business UniversityBeijing 100048China

Direct chemical vapor deposition(CVD)growth of graphene on dielectric/insulating materials promises transfer-free applications of ***,growing graphene on non-catalytic substrates faces significant challenges,particularly due to its limited growth rate,restricting large-scale production and potential ***,we develop graphene-skinned glass fiber fabric(GGFF)by growing graphene CVD on commercial glass fiber fabric(GFF).This study utilizes propane as a carbon source to prepare GGFF *** active carbon source(C2H)derived from propane plays a significant role in facilitating the rapid growth of graphene *** accelerated growth rates(~50 times faster),and reduced growth temperature(~100℃ lower)compared to the conventional carbon source ***,propane consistently maintains a higher graphene growth rate than methane at equivalent growth *** lightweight flexibility,excellent thermal radiation properties,and energy efficiency of GGFF make it an outstanding material for infrared radiation drying.

关键词： chemical vapor deposition graphene propane rapid preparation

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A robust graphene oxide memristor enabled by organic pyridinium intercalation for artificial biosynapse application

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Nano Research 2023年第8期16卷 11278-11287页

作者： Yang Li Songtao Ling Ruiyu He Cheng Zhang Yue Dong Chunlan Ma Yucheng Jiang Ju Gao Jinghui He Qichun Zhang Jiangsu Key Laboratory of Micro and Nano Heat Fluid Flow Technology and Energy Application School of Physical Science and TechnologySuzhou University of Science and TechnologySuzhou 215009China College of Chemistry Chemical Engineeringand Materials ScienceSoochow UniversitySuzhou 215123China Department of Materials Science and Engineering City University of Hong KongKowloonHong Kong 999077China Department of Chemistry&Center of Super-Diamond and Advanced Films(COSDAF) City University of Hong KongKowloonHong Kong 999077China

Graphene oxide(GO)-based memristors offer the promise of low cost,eco-friendliness,and mechanical flexibility,making them attractive candidates for outstanding flexible electronic ***,their resistive transitions often display abrupt change rather than bidirectional progressive tuning,which largely limits their applications for biological synapse emulation and neuromorphic ***,a memristor with a novel layered structure of GO/pyridinium/GO is presented with tunable bidirectional *** inserted organic pyridinium intercalation succeeds in serving as a satisfactory buffer layer to intrinsically control the formation of conductive filaments during device operation,leading to progressive conductance ***,the essential synaptic behaviors including analog memory characteristics,excitatory postsynaptic current,paired pulse facilitation,prepulse inhibition,spike-timing-dependent plasticity,and spike-rate-dependent plasticity are *** emulation of brain-like“learning-forgetting-relearning”process is also ***,the instant responses of the memristor can be stimulated by low operational voltages and short pulse *** study paves one way for GO-based memristors to actuate appealing features such as bidirectional tuning and fast speed switching that are desirable for the development of bio-inspired neuromorphic systems.

关键词： graphene oxide nanoscale memristor 2D materials flexible electronics artificial synapses

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