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2023 Conference on Lasers and Electro-Optics, CLEO 2023

作者： Hwang, Taek Yong Cho, Jongweon Kim, Yong-dae Park, Tae Hoon Kang, Jeongjin Lee, Byounghwak Molding and Metal forming R&D Department Korea Institute of Industrial Technology Bucheon14441 Korea Republic of Department of Physics Myongji University Yongin17058 Korea Republic of Department of Materials Science and Engineering Inha University Incheon22212 Korea Republic of Industrial Materials Processing R&D Department Korea Institute of Industrial Technology Incheon21999 Korea Republic of Department of Physics and Chemistry Korea Military Academy Seoul01805 Korea Republic of

By constructing structurally colorized images on metals with femtosecond laser-induced periodic structures (fs-LIPSSs), we demonstrate the color variations of fs-LIPSSs with a broad angular range of illumination incid... 详细信息

ISBN: (纸本)9781957171258

关键词： Authentication

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Mechanical densification synthesis of single-crystalline Ni-rich cathode for high-energy lithium-ion batteries

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Journal of Energy Chemistry 2023年第4期79卷 562-568页

作者： Gwonsik Nam Jaeseong Hwang donghun Kang Sieon Oh Sujong Chae Moonsu Yoon Minseong Ko Division of Convergence Materials Engineering Pukyong National UniversityBusan 48547Republic of Korea Namyang R&D Center Hyundai Motor CompanyHwaseong 18280Republic of Korea Division of Industrial Chemistry and Polymer Engineering Pukyong National UniversityBusan 48547Republic of Korea Department of Nuclear Science and Engineering Massachusetts Institute of TechnologyCambridgeMA 02139USA

The intergranular microcracking in polycrystalline Ni-rich cathode particle is led by anisotropic volume change and stress corrosion along grain boundary,accelerating battery performance ***,we have suggested a simple but advanced solid-state method that ensures both uniform transition metal distribution and single-crystalline morphology for Ni-rich cathode synthesis without sophisticated ***-assisted mechanical densification(PAMd)process on solid-state precursor mixture enables the dynamic mass transfer through the increased solid-solid contact area which facilitates the grain growth during sintering process,readily forming micro-sized single-crystalline ***,the improved chemical reactivity by a combination of capillary effect and vacancyassisted diffusion provides homogeneous element distribution within each primary *** a result,single-crystalline Ni-rich cathode with PAMd process has eliminated a potential evolution of intergranular cracking,thus achieving superior energy retention capability of 85%over 150 cycles compared to polycrystalline Ni-rich particle even after high-pressure calendering process(corresponding to electrode density of~3.6 g cm^(-3))and high cut-off voltage *** work provides a concrete perspective on developing facile synthetic route of micron-sized single-crystalline Ni-rich cathode materials for high energy density lithium-ion batteries(LIBs).

关键词： Lithium-ion batteries Ni-rich cathode materials Mechanical densification Solid-state synthesis

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Mutual Self‑regulation of d‑Electrons of Single Atoms and Adjacent Nanoparticles for Bifunctional Oxygen Electrocatalysis and rechargeable Zinc‑Air Batteries

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Nano-Micro Letters 2023年第4期15卷 40-57页

作者： Sundaram Chandrasekaran rong Hu Lei Yao Lijun Sui Yongping Liu Amor Abdelkader Yongliang Li Xiangzhong ren Libo deng College of Chemistry and Environmental Engineering Shenzhen UniversityShenzhen 518060People’s Republic of China College of Chemistry and Bioengineering Guilin University of TechnologyGuilin 541004People’s Republic of China Shenzhen Key Laboratory of Special Functional Materials Shenzhen Engineering Laboratory for Advanced Technology of CeramicsCollege of Materials Science and EngineeringGuangdong Research Center for Interfacial Engineering of Functional MaterialsShenzhen UniversityShenzhen 518060People’s Republic of China Shanghai Key Laboratory for R&D and Application of Metallic Functional Materials Institute of New Energy for VehiclesSchool of Materials Science and EngineeringTongji UniversityShanghai 201804People’s Republic of China Department of Design and Engineering Faculty of Science&TechnologyBournemouth UniversityPoole BH125BBDorsetUK

rechargeable zinc-air batteries(ZABs)are a promising energy conversion device,which rely critically on electrocatalysts to accelerate their rate-determining reactions such as oxygen reduction(Orr)and oxygen evolution reactions(OEr).Herein,we fabricate a range of bifunctional M-N-C(metal-nitrogen-carbon)catalysts containing M-Nx coordination sites and M/MxC nanoparticles(M=Co,Fe,and Cu)using a new class ofγ-cyclodextrin(Cd)based metal-organic framework as the *** the two types of active sites interacting with each other in the catalysts,the obtained Fe@C-FeNC and Co@C-CoNC display superior alkaline Orr activity in terms of low half-wave(E1/2)potential(~0.917 and 0.906 V,respectively),which are higher than Cu@C-CuNC(~0.829 V)and the commercial Pt/C(~0.861 V).As a bifunctional electrocatalyst,the Co@C-CoNC exhibits the best performance,showing a bifunctional Orr/OEr overpotential(ΔE)of~0.732 V,which is much lower than that of Fe@C-FeNC(~0.831 V)and Cu@C-CuNC(~1.411 V),as well as most of the robust bifunctional electrocatalysts reported to *** X-ray absorption spectroscopy and density functional theory simulations reveal that the strong electronic correlation between metallic Co nanoparticles and the atomic Co-N4 sites in the Co@C-CoNC catalyst can increase the d-electron density near the Fermi level and thus effectively optimize the adsorption/desorption of intermediates in Orr/OEr,resulting in an enhanced bifunctional electrocatalytic *** Co@C-CoNC-based rechargeable ZAB exhibited a maximum power density of 162.80 mW cm^(−2) at 270.30 mA cm^(−2),higher than the combination of commercial Pt/C+ruO2(~158.90 mW cm^(−2) at 265.80 mA cm^(−2))*** the galvanostatic discharge at 10 mA cm^(−2),the ZAB delivered an almost stable discharge voltage of 1.2 V for~140 h,signifying the virtue of excellent bifunctional Orr/OEr electrocatalytic activity.

关键词： Cyclodextrin Cd-MOF Single-atom catalyst Orr/OEr Zinc-air battery

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Effect of Size-controlled Low-Melting-Point-Alloy Particle-Incorporated on the reliability of Transient Liquid Phase Epoxy Composite Conductive Adhesive 26

Effect of Size-controlled Low-Melting-Point-Alloy Particle-I...

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26th Electronics Packaging technology Conference, EPTC 2024

作者： Liang, Chen Yang, Mingkun Wang, Zhiteng Wan, Cheng Xu, Shimeng Xie, Xiaochen Lin, Pengrong Qu, Zhibo Wang, Yong Zhao, Xiuchen Huo, Yongjun Zhang, Gang School of Materials Science and Engineering Beijing Institute of Technology Beijing China Yangtze River Delta Graduate School of Beijing Institute of Technology Zhejiang Province Jiaxing China School of Integrated Circuit Tsinghua University Beijing China Package R&D Center Beijing Microelectronics Technology Institute Beijing China

ISBN: (纸本)9798331522001

The effect of size-controlled Low-Melting-Point-Alloy (LMPA) particles on the reliability of transient liquid phase epoxy conductive adhesive (TLP-ECA) is discussed. The effects of LMPA particles on resistivity and shear strength were evaluated by high temperature aging (120℃, 1000 h) and high temperature and humidity (85℃, 85%rH, 1000 h) tests. Compared with the traditional Ag-ECA, the resistance of TLP-ECA decreases after high temperature aging, and the shear strength decreases with time, but the overall reliability is better. SEM and TEM analysis revealed that LMPA particles formed a metallurgical bridge with Ag sheets during the curing process, which inhibited crack formation and extension, and increases the contact area with the substrate. This ultimately improves the mechanical integrity, resulting in better electrical, mechanical and thermal stability of TLP-ECA. © 2024 IEEE.

关键词： Shear strength

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Multifunctional MXene/Carbon Nanotube Janus Film for Electromagnetic Shielding and Infrared Shielding/detection in Harsh Environments

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Nano-Micro Letters 2024年第10期16卷 543-560页

作者： Tufail Hassan Aamir Iqbal Byungkwon Yoo Jun Young Jo Nilufer Cakmakci Shabbir Madad Naqvi Hyerim Kim Sungmin Jung Noushad Hussain Ujala Zafar Soo Yeong Cho Seunghwan Jeong Jaewoo Kim Jung Min Oh Sangwoon Park Youngjin Jeong Chong Min Koo School of Advanced Materials Science and Engineering Sungkyunkwan UniversitySeobu-ro 2066Jangan-guSuwon-siGyeonggi-do 16419Republic of Korea Department of Materials Science and Engineering Soongsil UniversitySeoul 06978Republic of Korea Institute of Advanced Composite Materials Korea Institute of Science and Technology92 Chudong-roBongdong-eupWanju-gunJeollabuk-do 55324Republic of Korea R&D Center INNOMXENE Co. Ltd.Daejeon 34365Republic of Korea School of Chemical Engineering Sungkyunkwan UniversitySeobu-ro 2066Jangan-guSuwon-siGyeonggi-do 16419Republic of Korea

Multifunctional,flexible,and robust thin films capable of operating in demanding harsh temperature environments are crucial for various cutting-edge *** study presents a multifunctional Janus film integrating highly-crystalline Ti_(3)C_(2)T_(x) MXene and mechanically-robust carbon nanotube(CNT)film through strong hydrogen *** hybrid film not only exhibits high electrical conductivity(4250 S cm^(-1)),but also demonstrates robust mechanical strength and durability in both extremely low and high temperature environments,showing exceptional resistance to thermal *** hybrid Janus film of 15μm thickness reveals remarkable multifunctionality,including efficient electromagnetic shielding effectiveness of 72 dB in X band frequency range,excellent infrared(Ir)shielding capability with an average emissivity of 0.09(a minimal value of 0.02),superior thermal camouflage performance over a wide temperature range(−1 to 300℃)achieving a notable reduction in the radiated temperature by 243℃ against a background temperature of 300℃,and outstanding Ir detection capability characterized by a 44%increase in resistance when exposed to 250 W Ir *** multifunctional MXene/CNT Janus film offers a feasible solution for electromagnetic shielding and Ir shielding/detection under challenging conditions.

关键词： MXene/carbon nanotube Janus film Electromagnetic interference shielding Infrared shielding Thermal camouflage Infrared detection

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Negative data in data Sets for Machine Learning Training

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JOUrNAL OF OrGANIC CHEMISTrY 2023年第9期88卷 5239-5241页

作者： Maloney, Michael P. Coley, Connor W. Genheden, Samuel Carson, Nessa Helquist, Paul Norrby, Per-Ola Wiest, Olaf Department of Chemistry and Biochemistry University of Notre Dame Notre Dame Indiana 46556 United States Department of Chemical Engineering and Department of Electrical Engineering and Computer Science Massachusetts Institute of Technology Cambridge Massachusetts 02139 United States Molecular AI Discovery Sciences R&D AstraZeneca Gothenburg Pepparedsleden 1 SE-431 83 Mölndal Sweden Early Chemical Development Pharmaceutical Sciences R&D AstraZeneca Macclesfield SK10 2NA U.K. Data Science and Modelling Pharmaceutical Sciences R&D AstraZeneca Gothenburg Pepparedsleden 1 SE-431 83 Mölndal Sweden

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deformable micro-supercapacitor fabricated via laser ablation patterning of Graphene/liquid metal

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npj Flexible Electronics 2024年第1期8卷 770-778页

作者： Keon-Woo Kim Seong Ju Park Su-Jeong Park Inae Kim Bomi Park Se Hyun Kim Unyong Jeong Jin Kon Kim Chanwoo Yang National Creative Research Initiative Center for Hybrid Nano Materials by High-level Architectural Design of Block Copolymer Department of Chemical EngineeringPohang University of Science and Technology(POSTECH)PohangGyeongbuk 37763Republic of Korea Advanced Nano-Surface&Wearable Electronics Research Laboratory Heat and Surface Technology R&D DepartmentKorea Institute of Industrial TechnologyIncheon 21999Republic of Korea Division of Chemical Engineering Konkuk UniversitySeoul 05029Republic of Korea Department of Materials Science and Engineering Pohang University of Science and Technology(POSTECH)PohangGyeongbuk 37763Republic of Korea

deformable andminiaturized energy storage devices are essential for powering soft ***,we fabricate deformablemicro supercapacitors(MSCs)based on eutectic gallium-indium liquidmetal(EGaIn)current collectors with integrated *** well-define interdigitated electrode patterning with controlled gap is successfully realized by using the laser ablation because of a strong laser absorption of graphene and *** judicious control of gap size between neighboring interdigitated electrodes and mass loading of graphene,we achieve a high areal capacitance(1336μF cm^(−2))with reliable rate *** addition,owing to the intrinsic liquid characteristics of EGaIn current collector,the areal capacitance of fabricated MSC retains 90% of original value evenafter repetitive foldingand20%stretching up to 1000 ***,we successfully integrate deformable MSC with a commercial light-emitting diode to demonstrate the feasibility ofMSC as a deformable power *** fabricated MSCs operate stably under various mechanical deformations,including stretching,folding,twisting,and wrinkling.

关键词： laser stretching liquid

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The Time for Industrialization Has Come: A Pre-Coated Solution for the GW Scale 17

The Time for Industrialization Has Come: A Pre-Coated Soluti...

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17th International Symposium on Solid Oxide Fuel Cells, SOFC 2021

作者： Bernuy-Lopez, C. Bexell, U. Stenstrom, M. Norrby, N. Westlinder, J. Surface Research R&D Sandvik Materials Technology Sandviken Sweden

ISBN: (纸本)9781607685395

Fuel Cells and Electrolyzers are key technologies for the utilization of Green Hydrogen, one of the tools to be able to enlarge the use of renewable energy. during the 2020 decade, a large ramp-up of both technologies will take place and therefore, industrial processes will be needed in order to realize these goals and bring these technologies to the GW level. Sandvik materials technology has developed a coil-to-coil process to produce pre-coated stainless steel materials in a rapid and cost-effective manner. These coated material are the base material for the production of both bipolar plates and interconnects which are key for the rapid industrialization of both fuel cells and electrolyzers. A large portfolio of materials for PEM fuel cells, both PEM and AEM electrolysis but also SOC applications are available for this purpose. Sanergy HT has been proven over nearly the last decade to be the leading material in the interconnect fabrication for SOC application due to its excellent corrosion properties, very low Cr evaporation, and excellent performance after long-term exposures. © 2021 Electrochemical Society Inc.. All rights reserved.

关键词： Cost effectiveness

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The Comparison Study of Board Level drop and Set Level drop Performance

The Comparison Study of Board Level Drop and Set Level Drop ...

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International Conference on (ICEPT) Electronic Packaging technology

作者： Guosong Zhang Minyan Wu Yunpeng Shang Yonghua Zhou Tingzuo Tan Packaging Technology Development Team Samsung Semiconductor(China)R&D CO. LTD Suzhou China

ISBN: (数字)9798350353808

ISBN: (纸本)9798350353815

The IC failures induced by accidental dropping event of modern handheld electronic devices such as mobile phones may result from various failure modes such as cracking of package(PKG), solder joint, etc. Generally, the board level drop test is normally adopted to evaluate the IC failure risk instead of the set level drop test considering cost and efficiency. recently, however, the chip crack/damage failure rate in board level drop is much lower than that of mobile set level free drop. In this paper, a comprehensive study was performed to investigate the dynamic response characteristics of drop test with a customized PCB board when subjected to board level drop test and set level free drop test. The board level drop test was carried out according to JEdEC standard using a drop test apparatus, and the set level free drop test was employed by using the free drop machine. Moreover, two Finite Element models with reference to board level drop and set level free fall drop tests were developed to simulate the actual drop test scenarios based on two simplified FEA methods (Input-G method and impact velocity method, respectively). The simulation data were compared with experimental outputs to identify the FE Models in terms of accuracy of the results extracted. The dynamic key parameters of typical locations in PCB were analyzed to characterize performance difference during two kinds of drops. The measured and simulated data of corresponding locations in set level drop are all larger than those of board level drop in terms of impact acceleration intensity and duration, the strain response and the simulated chip stress. Comparing with board level drop response, a greater acceleration impact would induce a greater strain response, subsequently, the stress subjecting to chip of IC package is greater during set level free drop. Thus, we can conclude that the impact effect of set level free drop is severer than that of board level drop from experiment and simulation results, this

关键词： Accelerometers Semiconductor device measurement Tensile stress Simulation Life estimation Position measurement Strain measurement

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Study on Microstructure and Mechanical Properties of Silver and Silver-Indium Solid Solution Films Using Magnetron Sputtering 26

Study on Microstructure and Mechanical Properties of Silver ...

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26th Electronics Packaging technology Conference, EPTC 2024

作者： Zhao, Shuang Lin, Pengrong Zhang, donglin Wang, Taiyu Liu, Sichen Xie, Xiaochen Xu, Shimeng Qu, Zhibo Wang, Yong Zhao, Xiuchen Huo, Yongjun School of Materials and Engineering Beijing Institute of Technology Beijing100081 China Package R&D Center Beijing Microelectronics Technology Institute Beijing100076 China Department of Mechanical Engineering State Key Laboratory of Tribology Tsinghua University Beijing100084 China Department of Materials Science Shenzhen MSU-BIT University Guangdong Province Shenzhen518172 China

ISBN: (纸本)9798331522001

Pure silver and (Ag)-In solid solutions are recognized as vital materials for metal-to-metal solid-state bonding processes in the electronic packaging field, owing to their low yield strength and high plastic deformation capabilities. In this study, Ag and (Ag)-In solid solution films were obtained via magnetron sputtering under varying argon flow rates. The composition and phase characterization of the obtained Ag and (Ag)-In films were determined utilizing X-ray diffraction (Xrd) techniques. The influence of different argon flow rates on the surface roughness of Ag and (Ag)-In films was analyzed using atomic force microscopy (AFM). Furthermore, the microstructure and grain orientation of the Ag and (Ag)-In films were examined via scanning electron microscopy/focused ion beam (SEM/FIB) methods, while the hardness of these films was assessed through nanoindentation analysis. The results show that increasing argon flow rate minimally impacts the orientation of pure Ag films, whereas the orientation in (Ag)-In films becomes more pronounced. Notably, the hardness of (Ag)-In films obtained under large argon flow rate is lower compared to pure Ag films, primarily due to differences in grain size and microstructure density. This investigation presents a novel material option for solid-state bonding applications within the realm of electronic packaging. © 2024 IEEE.

关键词： Magnetron sputtering

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