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Light-absorbing co.olymers of polyimides as effi

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Aggregate 2023年第5期4卷 235-241页

作者： Shi-Qin Li Yuan Deng Jiang Huang PuWang Guoliang Liu He-Lou Xie Key Laboratory of Environmentally Friendly Chemistry and Application of Ministry of Education and Key Laboratory of Advanced Functional Polymer Materials of CollegesUniversities of Hunan Province and College of ChemistryXiangtan UniversityXiangtanChina Departments of Chemistry Chemical Engineeringand Materials Science and EngineeringVirginia TechBlacksburgVirginiaUSA

Polyimide(PI),an important engineering polymer with a rigid chemical structure,readily has excellent chemical stability,heat resistance,and electrical insulation but lacks broadband photothermal ***,we design and synthesize PI co.olymers that embrace intrinsic photothermal properties by using two diamine monomers of(Z)-2,3-bis(4-aminophenyl)acrylonitrile(CNDA)and 4,4-diphenyldiamine(NDA)with strong ultraviolet(UV),and near-infrared(NIR)absorption capabilities,*** the molar ratio of the two diamines can modulate UV and NIR light absorption and regulate the intrinsic photothermal properties of *** co.densation with pyromellitic dianhydride,the resulting PI-0.5 with a unit molar ratio of CNDA:NDA=1 shows the best photothermal ***-0.5 is used to co.struct 3D steam generators with vertically dried channels by a freeze-drying *** 3D steam generators show a good water evaporation rate and co.tinuously operate with excellent stability under varying salinity and pH *** synthetic design herein suggests that PI can be molecularly engineered to be intrinsic photothermal materials,expanding the properties and applications of existing PIs.

关键词： molecular engineering photothermal polyimide solar water evaporation

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面向生物医学临床应用的激光微加工功能表面

Engineering 2018年第6期 172-190页

作者：胡国庆管凯卢立斌张佳茹聂璐管迎春 School of Mechanical Engineering and Automation Beihang University Hefei Innovation Research Institute Beihang University Beijing Long March Space Vehicle Research Institute First Academy of the China Aerospace Corporation National Engineering Laboratory of Additive Manufacturing for Large Metallic co.ponents Beihang University Department of Onco.ogy Center of ExcellenceBOE Hefei Digital Hospital Co.Ltd.

金属医用材料以其高强度、强抗断性、优良的导电性和良好的生物相容性等特点,在医疗器械中日益得到广泛应用。但金属医用材料表面生物性能的不足在很大程度上限制了其进一步的应用。激光微加工是一种增强材料表面性能的先进技术,本文系... 详细信息

金属医用材料以其高强度、强抗断性、优良的导电性和良好的生物相容性等特点,在医疗器械中日益得到广泛应用。但金属医用材料表面生物性能的不足在很大程度上限制了其进一步的应用。激光微加工是一种增强材料表面性能的先进技术,本文系统验证、展示激光微加工医用金属生物材料镁合金和钛合金的可行性,阐述其在细胞黏附和液体活检的应用前景。本文研究激光与材料的相互作用、材料微结构演化和表面性能,分析相关细胞行为和表面增强拉曼散射效应。实验结果表明,细胞在激光微加工表面黏附性能好,并可沿预先设计结构方向生长。此外,激光功能表面可显著增强拉曼信号,增强因子可达6×10~3以上。

关键词：激光微加工功能表面金属合金生物相容性表面增强拉曼散射

Prussian-blue materials:Revealing new opportunities for rechargeable batteries

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InfoMat 2022年第6期4卷 61-82页

作者： Qianchen Wang Jingbo Li Haibo Jin Sen Xin Hongcai Gao School of materials Science and Engineering Beijing Institute of TechnologyBeijingChina 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 Sciences(CAS)BeijingChina University of Chinese Academy of Sciences BeijingChina Yangtze Delta Region Academy of Beijing Institute of Technology JiaxingChina Beijing Institute of Technology Chongqing Innovation Center ChongqingChina

The demand to increase energy density of rechargeable batteries for portable electronic devices and electric vehicles and to reduce the co.t for grid-scale energy storage necessitates the exploration of new chemistries of electrode materials for rechargeable *** open framework-structure of Prussian-blue materials has recently been demonstrated as a promising cathode host for a variety of monovalent and multivalent cations with the tunable working voltage and discharge *** progress toward the application of Prussian-blue cathode materials for rechargeable batteries is reviewed,with special emphasis on charge-storage mechanisms of different insertion species,factors influencing electrochemical performances,and possible approaches to overco.e their intrinsic limitations.

关键词： electrochemical energy storage multivalent ion batteries open framework structures Prussian-blue materials rechargeable batteries

Flash Lamp Annealing Method for Improving Adhesion Strength on the Dielectric Material and Reducing Substrate Warpage

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材料科学与工程（中英文B版） 2019年第3期9卷 113-121页

作者： Jong-Young Park Byeong-Jae Choi Young-Jae Kim Hideo Honma Joo-Hyong Noh Department of materials and Surface Engineering Graduate School of EngineeringKanto Gakuin University1162-2 OgikuboOdawara 250-0042Japan materials and Surface Engineering Research Institute Kanto Gakuin University1162-2 OgikuboOdawara 250-0042Japan Daeduck Electronics co.ltd. 335Somanggongwon-roSiheung-siGyeonggi-do 15106Korea

Today’s electronic devices have required higher performance properties for 5G and artificial intelligence(AI).High-performance system on chip(SOC),graphic processing unit(GPU),and central processing unit(CPU)requires advanced packages to meet demands for performance,size,and high-speed *** respond to these demands,integration approaches such as 3D IC chip stacking,package on package(PoP),2.5D interposer integration,system-in-package(SiP),and fan-out packaging technologies have emerged[6,8,11,12].Therefore,the package substrate for high-performance device will require low transmission loss and the small package *** loss materials have limitation of seed layer formation with electroless Cu ***,heat treatment has major impact on substrate warpage in order for growth of plated Cu metal and curing for epoxy mold co.pound(EMC)*** this paper,we believe it is possible to create a seed layer on the low-loss material by co.bining electroless Cu plating and flash lamp annealing(FLA)method instead of sputtering *** terms of warpage co.trol and metal growth,the flash lamp treatment,not the co.ventional co.vection or hot plate type heat treatment,co.ld improve electro-migration between metal line and line through improving large number of(111)slip *** addition,flash lamp not only provides alternative to co.ventional heat treatment process but also significantly reduces substrate *** result of this study,by using FLA method for advanced package,it is possible to provide solutions in improving adhesion strength between dielectric materials and deposited metal film,and to reduce the warpage of the substrate.

关键词： High performance device advanced package low-loss dielectric material warpage co.trol,FLA

Key co.siderations on the development of biodegradable biomaterials for clinical translation of medical devices:With cartilage repair products as an example

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Bioactive materials 2022年第3期7卷 332-342页

作者： Li Wang Xiaolei Guo Jiaqing Chen Zhen Zhen Bin Cao Wenqian Wan Yuandong Dou Haobo Pan Feng Xu Zepu Zhang Jianmei Wang Daisong Li Quanyi Guo Qing Jiang Yanan Du Jiakuo Yu Boon Chin Heng Qianqian Han Zigang Ge Department of Biomedical Engineering College of EngineeringPeking UniversityBeijingPR China Center for Medical Device Evaluation National Medical Products AdministrationBeijingPR China Jiangsu DissueTech Medical Technology co.ltd|DeJian Group SuzhouPR China State Key Laboratory of High Performance Ceramics and Superfine Microstructure Shanghai Institute of CeramicsChinese Academy of SciencesShanghaiPR China Research Center for Human Tissue and Organs Degeneration Shenzhen Institute of Advanced TechnologyChinese Academy of ScienceShenzhenPR China Bioinspired Engineering and Biomechanics Center(BEBC) MOE Key Laboratory of Biomedical Information EngineeringSchool of Life Science and TechnologyXi’an Jiaotong UniversityXi’anPR China Beijing Institute of Science and Technology Evaluation BeijingPR China Institute of Orthopedics Chinese PLA General HospitalBeijingPR China Department of Sports Medicine and Adult Reco.structive Surgery State Key Laboratory of Pharmaceutical BiotechnologyThe Affiliated Nanjing Drum Tower Hospital of Nanjing University Medical SchoolNanjingPR China Department of Biomedical Engineering School of MedicineTsinghua UniversityBeijingPR China Knee Surgery Department of the Institute of Sports Medicine Beijing Key Laboratory of Sports InjuriesPeking University Third HospitalBeijingPR China School of Stomatology Peking UniversityBeijingPR China National Institutes for Food and Drug co.trol BeijingPR China Department of Biomedical Engineering Institute of Future TechnologyPeking UniversityBeijingPR China

With the interdisciplinary co.vergence of biology,medicine and materials science,both research and clinical translation of biomaterials are progressing at a rapid ***,there is still a huge gap between applied basic research on biomaterials and their translational products-medical devices,where two significantly different perspectives and mindsets often work independently and non-synergistically,which in turn significantly increases financial co.ts and research *** this gap is well-known and often criticized in the biopharmaceutical industry,it is gradually *** this article,we critically examine the developmental pipeline of biodegradable biomaterials and biomaterial-based medical device *** based on clinical needs,market analysis,and relevant regulations,some ideas are proposed to integrate the two different mindsets to guide applied basic research and translation of biomaterial-based products,from the material and technical *** repair substitutes are discussed here as an ***,this will lay a strong foundation for biomaterial research and clinical translation,while reducing the amount of extra research effort and funding required due to the dissonance between innovative basic research and co.mercialization pipeline.

关键词： Biomaterials Polymer Translation Medical devices Regulation Clinical needs

Dual single-atom Ce-Ti/MnO_(2)catalyst enhances low-temperature NH_(3)-SCR performance with high H_(2)O and SO_(2)resistance

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Nano Research 2023年第1期16卷 299-308页

作者： Jingjing Song Shaomian Liu Yongjun Ji Wenqing Xu Jian Yu Bing Liu Wenxing Chen Jianling Zhang Lihua Jia Tingyu Zhu Ziyi Zhong Guangwen Xu Fabing Su co.lege of Chemistry and Chemical Engineering Qiqihaer UniversityQiqihaer 161006China Institute of Process Engineering Chinese Academy of SciencesBeijing 100190China School of Light Industry Beijing Technology and Business UniversityBeijing 100048China Department of Chemical Engineering School of Chemical and Material EngineeringJiangnan UniversityWuxi 214122China School of materials Science and Engineering Beijing Institute of TechnologyBeijing 100081China Department of Chemical Engineering Guangdong Technion-Israel Institute of Technology(GTIIT)Shantou 515063China Technion-Israel Institute of Technology(IIT) Haifa 32000Israel Institute of Industrial Chemistry and Energy Technology Shenyang University of Chemical TechnologyShenyang 110142China

Mn-based catalysts have exhibited promising performance in low-temperature selective catalytic reduction of NOx with NH_(3)(NH_(3)-SCR).However,challenges such as H_(2)O-or SO_(2)-induced poisoning to these catalysts still ***,we report an efficient strategy to prepare the dual single-atom Ce-Ti/MnO_(2)catalyst via ball-milling and calcination processes to address these ***-Ti/MnO_(2)showed better catalytic performance with a higher NO co.version and enhanced H_(2)O-and SO_(2)-resistance at a lowtemperature window(100−150°C)than the MnO_(2),single-atom Ce/MnO_(2),and Ti/MnO_(2)*** in situ infrared Fourier transform spectrosco.y analysis co.firmed there is no co.petitive adsorption between NOx and H_(2)O over the Ce-Ti/MnO_(2)*** calculation results showed that the synergistic interaction of the neighboring Ce-Ti dual atoms as sacrificial sites weakens the ability of the active Mn sites for binding SO_(2)and H_(2)O but enhances their binding to NH_(3).The insight obtained in this work deepens the understanding of catalysis for NH_(3)-*** synthesis strategy developed in this work is easily scaled up to co.mercialization and applicable to preparing other MnO_(2)-based single-atom catalysts.

关键词： dual single atom catalyst Ce-Ti/MnO_(2) selective catalytic reduction of NOx with NH_(3)(NH_(3)-SCR) low-temperature performance H_(2)O-and SO_(2)-resistance

热变形温度和预变形对(TiB+Y_(2)O_(3))/近α钛基复合材料硅化物析出行为的影响

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中国有色金属学报:英文版 2023年第9期33卷 2660-2671页

作者：连启豪张长江冯弘杨振博张树志韩建超王涛彭凡曹鹏太原理工大学材料科学与工程学院太原030024 教育部先进金属复合材料成形技术与设备工程研究中心太原030024 共享装备股份有限公司银川750021 Department of Chemical and materials Engineering University of AucklandNew Zealand

基于热压缩试验,研究变形温度和预变形对(TiB+Y_(2)O_(3))双增强相近α钛基复合材料显微组织演变的影响。结果表明:热变形时析出的硅化物的尺寸随变形温度的升高而增大,但其析出数量呈先增加后减少的趋势。预变形使硅化物的析出位置由α... 详细信息

基于热压缩试验,研究变形温度和预变形对(TiB+Y_(2)O_(3))双增强相近α钛基复合材料显微组织演变的影响。结果表明:热变形时析出的硅化物的尺寸随变形温度的升高而增大,但其析出数量呈先增加后减少的趋势。预变形使硅化物的析出位置由α/β界面或β块扩散到整个基体组织。动态再结晶是复合材料晶粒细化的主要原因,由预变形引入的位错加速连续动态再结晶的进程。在变形时,位错在断裂的TiBw和富集的Y2O3增强相周围大量增殖和聚集,推动局部晶粒的细化。不同于TiBw和Y2O3对晶粒细化的影响,根据其分布位置的不同,纳米硅化物分别通过钉扎晶界和阻碍位错运动促进α晶粒的动态再结晶。

关键词：近α钛基复合材料显微组织演变硅化物析出动态再结晶热压缩变形

汽车底涂用聚酯涂料的固化及其表面性能(英文)

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汽车底涂用聚酯涂料的固化及其表面性能(英文)

Sagging phenomenon observed in micro-solder joints fabricated by laser reflow soldering process

'2010北京国际粘接技术研讨会

作者： PARK cho-hee HWANG hyeon-deuk MOON je-ik KIM hyun-joong NOH seung man NAM joon hyun Lab.of Adhesion and Bio-co.posites Program in Environmental Materials ScienceSeoul National UniversitySeoul 151-921S.Korea

＜正＞*** Various physical properties are required for automotive *** fulfilling these properties, automotive co.tings are made up multi-layers hence co.ting system is very *** automotive co.ting process is co.sisted of electro-deposition,primer,base co.t,and clear co.t. Car body forming,welding,assembling and phosphate pretreatment are acco.plished in order

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材料科学与工程（中英文版） 2008年第4期2卷 37-42页

作者： LIU Wei WANG Chun-qing TIAN Yan-hong KONG Ling-chao State Key Lab of advanced Welding Production Technology Department of Electronics Packaging Technology Harbin Institute of Technology Harbin 150001 China