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Effect of non-magnetic rare earth substitution for Zr on mixed anion Zr(P, Se)2 superconductors

Journal of Physics: Conference Series 2018年第1期1054卷

作者： K Iwakiri T Nishio K Kawashima S Ishida K Oka H Fujihisa Y Gotoh A Iyo H Ogino H Eisaki Y Yoshida H Kitô National Institute of Advanced Industrial Science and Technology (AIST) 1-1-1 Umezono Tsukuba Ibaraki 305-8568 Japan Department of Physics Faculty of Science Division II Tokyo University of Science 1-3 Kagurazaka Shinjuku-ku Tokyo 162-8601 Japan IMRA Material R&D Co. Ltd Kariya Aichi 448-0032 Japan

It is shown that the maximum superconducting transition temperature, T c for ZrP1.25Se0.75 is increased from 5.8 K to 7.2 K by partially substituting a non-magnetic rare earth atom Lu for Zr and on the other hand is decreased by substituting other non-magnetic rare earth atoms Y and La. Obviously, T c is raised when lattice constants in the a-axis and the c-axis increase with replacing Zr. Its implications for further increasing T c are discussed.

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development of Next Generation Flip Chip Interconnection technology Using Homogenized Laser-Assisted Bonding

Development of Next Generation Flip Chip Interconnection Tec...

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Electronic Components and technology Conference (ECTC)

作者： Yanggyoo Jung dongsu ryu Minho Gim Choonghoe Kim Yunseok Song Jinyoung Kim Juhoon Yoon Choonheung Lee Package Development Team R&D Center Amkor Technology Korea Inc. Seoul Korea

Conventional flip chip technologies such as the mass reflow (Mr) process and the thermal compression bonding (TCB) process are commonly used technologies in the micro assembly field. However, there is a continuous need for next generation interconnection technology to achieve a low form factor with increasing die and substrate complexities. Moreover, very thin 3d integrated packages and 2.5d packages with thin interposer die promise advanced interconnection technologies for mobile and wearable applications. With this point of view, the most important factor in interconnection is optimal thermal energy control for soldering. However, a conventional Mr process cannot provide any selectivity and controlled thermal energy transferring with the traditional convection reflow. Its high thermal budget makes warpage an issue, aside from other side effects. To overcome the Mr process problems, recent researches and industries have focused on developing a TCB process with non-conductive paste (NCP) or non-conductive film (NCF) due to TCB's unique advantages of low mechanical and thermal stress. However, the productivity of the TCB process is not comparably to the conventional process. Laser-assisted bonding (LAB) with beam homogenizer is considered to be the next generation interconnection technology due to its excellent thermal selectivity, extremely fast ramping up speed with purely controlled wavelength. This LAB process offers a very stable interconnection quality as well as robust functional and reliability result. Interestingly, it also achieves excellent results with thin coreless substrate due to its selective heating area availability. This paper will discuss the laser heating mechanism, multi-chip & component bonding availability and advantage of LAB from an assembly industrial perspective.

关键词： Laser beams Heating Silicon Bonding Absorption Flip-chip devices Substrates

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Obtaining and characterisation of high entropy alloys used for medical applications

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IOP Conference Series: materials Science and Engineering 2019年第1期572卷

作者： V Geantă I Voiculescu r Ştefănoiu M Codescu H Kelemen G Pavel A Vlădescu V A Sandu POLITEHNICA University of Bucharest 313 Splaiul Independenţei 060042 Bucharest Romania National Institute for R&D in Electrial Engineering ICPE-CA 313 Splaiul Unirii District 3 030138 Bucharest Romania University of Medicine Pharmacy Science and Technology of Targu Mures Gheorghe Marinescu 38 540139 Tirgu Mures Romania The University of Agricultural Sciences and Veterinary Medicine Iaşi 3 Mihail Sadoveanu Alley 700490 Iaşi Romania National Institute for Research and Development in Optoelectronics INOE 2000 409 Atomiştilor street 077125 Măgurele Romania Gheorghe Asachi Technical University of Iasi 67 Dimitrie Mangeron Blvd. 700050 Iasi Romania

The experimental CrFeMoNbTaTiZr alloys were designed based on the extremely low bio-toxicity of the chemical elements. They are currently used as a basis for alloying of classical alloys used in medical device manufacturing. From this alloying system, were obtained in a Vacuum Arc remelting (VAr) equipment six alloys: CrFeMoNbTaTi, CrFeMoNbTaZr, CrFeMoTaTiZr, CrFeTaNbTiZr, CrTaNbTiZrMo and FeTaNbTiZrMo. The microstructural analysis of the obtained alloys have been performed by optical and SEM microscopy. The microhardness tests show results in the range of 575 – 1337 HV0.2 / 10. In order to improve the mechanical properties heat treatment procedures have been applied.

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Correction to: HLA-A2.1-restricted ECM1-derived epitope LA through dC cross-activation priming Cd8+ T and NK cells: a novel therapeutic tumour vaccine

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Journal of hematology & oncology 2021年第1期14卷 158页

作者： Zhaojin Yu Wensi Liu Ying He Mingli Sun Jiankun Yu Xue Jiao Qiang Han Haichao Tang Bing Zhang Yunkai Xian Jing Qi Jing Gong Wang Xin Gang Shi Fengping Shan rui Zhang Jianping Li Minjie Wei Department of Pharmacology School of Pharmacy China Medical University No. 13 Beihai Road Dadong District Shenyang Liaoning Province China. Liaoning Key Laboratory of Molecular Targeted Antitumour Drug Development and Evaluation Liaoning Cancer Immune Peptide Drug Engineering Technology Research Centre Key Laboratory of Precision Diagnosis and Treatment of Gastrointestinal Tumours Ministry of Education China Medical University No.77 Puhe Road Shenyang North New Area Shenyang Liaoning Province China. The Third Department of Medical Oncology The Fourth Hospital of China Medical University Shenyang City Liaoning Province China. Department of Pharmacy Harrison International Peace Hospital Hengshui Hebei Province China. Liaoning Medical Diagnosis and Treatment R&D Centre Co. Ltd. Shenyang Liaoning Province China. Department of Colorectal Surgery Cancer Hospital of China Medical University Liaoning Cancer Hospital & Institute No.77 Xiaoheyan Road Dadong District Shenyang Liaoning Province China. Department of Immunology College of Basic Medical Science China Medical University Shenyang Liaoning Province China. Department of Colorectal Surgery Cancer Hospital of China Medical University Liaoning Cancer Hospital & Institute No.77 Xiaoheyan Road Dadong District Shenyang Liaoning Province China. zhangrui@***. Department of Pharmacology School of Pharmacy China Medical University No. 13 Beihai Road Dadong District Shenyang Liaoning Province China. ljp_63@***. Transfusion Medicine Institute Liaoning Blood Centre Shenyang Liaoning Province China. ljp_63@***. Transfusion Medicine Institute Harbin Blood Centre Harbin Heilongjiang Province China. ljp_63@***. Department of Pharmacology School of Pharmacy China Medical University No. 13 Beihai Road Dadong District Shenyang Liaoning Province China. mjwei@***. Liaoning Key Laboratory of Molecular Targeted Antitumour Drug Development and Evaluation Liaoning Cancer Immune Peptide Drug Engineering Technology Res

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Quality improvement of 4″ 4H-SiC crystal by using modified seed adhesion method

Quality improvement of 4″ 4H-SiC crystal by using modified ...

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European Conference on Silicon Carbide & related materials (ECSCrM)

作者： Jung-Woo Choi Jong-Hwi Park Jung-doo Seo Jung-Gyu Kim Myung-Ok Kyun Kap-ryeol Ku Hwang-Ju Kim dong-Hoon Lee Yeon-Suk Jang Won-Jae Lee SKC Advanced Technology R&D Center Gyeonggi-do Korea Department of Material & Components Engineering Dong-Eui University Busan Korea

ISBN: (纸本)9781509026142

The method to attach seed to crucible lid as well as seed quality is very important for obtaining high quality crystals. Therefore, modified seeding method was developed for improving adhesive layer between seed and graphite crucible lid. SiC single crystal grown with modified seeding method definitely exhibited lower micropipe density (MPd) and lower full width at half maximum (FWHM) values comparing with values from conventional seeding method. Etch pit density of SiC crystal was successfully decreased with using the modified seeding method.

关键词： Crystals Silicon carbide Adhesives Graphite delamination Photonic band gap Semiconductor materials

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Water-Proof Protection: Highly Stretchable Superhydrophobic Composite Coating Based on Self-Adaptive deformation of Hierarchical Structures (Small 19/2017)

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Small 2017年第19期13卷

作者： Xin Hu Changyu Tang Zhoukun He Hong Shao Keqin Xu Jun Mei Woon-Ming Lau Chengdu Green Energy and Green Manufacturing Technology R&D Center Chengdu Development Center of Science and Technology China Academy of Engineering Physics Chengdu 610200 China

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Convex Optimization-Based rotation Parameter Estimation Using Micro-doppler

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Journal of Electrical Engineering 2016年第4期4卷 157-164页

作者： Kyungwoo Yoo Joohwan Chun Seungoh Yoo Chungho ryu Department of Electrical Engineering Korea Advanced Institute of Science and Technology Daejeon Republic of Korea 8th R&D Institute Agency for Defense Development Republic of Korea

We present a novel algorithm that can determine rotation-related parameters of a target using FMCW （frequency modulated continuous wave） radars, not utilizing inertia information of the target. More specifically, the proposed algorithm estimates the angular velocity vector of a target as a function of time, as well as the distances of scattering points in the wing tip from the rotation axis, just by analyzing doppler spectrograms obtained from three or more radars. The obtained parameter values will be useful to classify targets such as hostile warheads or missiles for real-time operation, or to analyze the trajectory of targets under test for the instrumentation radar operation. The proposed algorithm is based on the convex optimization to obtain the rotation-related parameters. The performance of the proposed algorithm is assessed through Monte Carlo simulations. Estimation performance of the proposed algorithm depends on the target and radar geometry and improves as the number of iterations of the convex optimization steps increases.

关键词： Micro-doppler FMCW radar STFT （short-time Fourier transform） convex optimization rotation parameter.

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Influence of impurities in SiC powder on high quality SiC crystal growth 16th

Influence of impurities in SiC powder on high quality SiC cr...

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16th International Conference on Silicon Carbide and related materials, ICSCrM 2015

作者： Heo, S. Son, H.r. Kim, B.S. Kim, M.S. Han, J.E. Lee, d.H. Min, K.S. Kim, S.I. Ha, S. Shin, d.G. SiC Power Material Team LG Innotek R&D Center 55 Hanyangdaehak-ro Sangrok-gu Ansan-siGyeonggi-do426-791 Korea Republic of Energy Efficient Materials Team Korea Institute of Ceramic Engineering and Technology 101 Soho-ro Jinju-siGyeongsangnam-do Korea Republic of

ISBN: (纸本)9783035710427

SiC powders having different purities were prepared by carbothermal reduction under different conditions from traditional process and SiC single crystals were grown by the PVT method from the powders. After crystal growth, boule was cut to wafers and they were polished for chemical and defect analyses. Total impurities including Al, B and Ti which were derived from powders decreased remarkably during crystal growth. The formation of defects including micropipe and dislocations such as TEd, TSd and BPd was strongly influenced by impurity content. The effect of impurity seemed to be negligible at below 1ppm level for MPd. On the other hand, dislocations continuously decreased even more when higher purity SiC powder below 1ppm level was used. © 2016 Trans Tech Publications, Switzerland.

关键词： Energy efficiency

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Evolution of the CdW gap in Valence Skipper rbTlX3 (X=F,Cl,Br): A first-principle study

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Journal of Physics: Conference Series 2017年第1期871卷

作者： I Hase T Yanagisawa K Kawashima National Institute of Advanced Industrial Science and Technology (AIST) Tsukuba 305-8568 Japan IMRA Material R&D Co. Ltd. Kariya Aichi 448-0032 Japan

In the present study we investigated the electronic structure of the valence skipping compound rbTlX3 (X=F,Cl,Br) from first principles. Combined with structural optimization, we confirmed that the charge-density-wave (CdW) is formed in all of these three compounds, and the Tl atoms in two different sites take the valence Tl1+ and Tl3+. We investigated the evolution of the CdW gap as a function of the volume and the atomic position, and found that this CdW gap can be collapsed by applying pressure with only few GPa for rbTlBr3. In this metallic phase a large charge-fluctuation and a large electron-phonon interaction is expected.

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Periodic behaviors of deep-ocean flow and turbulent mixing in hydrothermal field on the Okinawa Trough, Japan

Periodic behaviors of deep-ocean flow and turbulent mixing i...

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OCEANS MTS/IEEE Monterey (Conference)

作者： Yasuo Furushima Hironori Higashi Hiroshi Koshikawa Naoki Furuichi Hiroyuki Yamamoto Research and Development (R&D) Center for Submarine Resources Japan Agency for Marine-Earth Science and Technology (JAMSTEC) Yokosuka Japan Center for Regional Environmental Research National Institute for Environmental Studies (NIES) Tsukuba Japan Research and Development (R&D) Center for Submarine Resources Japan Agency for Marine-Earth Science and Technology (JAMSTEC) Yokosuka Japan

ISBN: (纸本)9781509015276

In this study, the current fluctuations were measured at the hydrothermal fields in the Okinawa Trough (Hatoma Knoll, Irabu Knoll, and Iheya North field) to characterize the fluid environment. The purpose of this study was to reveal the fluctuations of the deep-sea currents using an acoustic doppler current profiler (AdCP), and to correlate them with the development of a bottom mixed layer as predicted by a numerical model. An AdCP (Teledyne rd Instruments Workhorse Sentinel, 300 kHz) was installed on the seabed at the Hatoma Knoll (depth about 1500 m), Irabu Knoll (depth about 2000 m), and Iheya North field (depth about 1000 m). For each observation point, the deep-sea current data were successfully recovered in the layer at depths between the seafloor and 40-60 m above the seafloor. Notably, the measurement results obtained at the Hatoma Knoll and Iheya North field showed a remarkably interesting fluctuation. during a time period of approximately 3 h, the range in the depths at which the currents were successfully recorded increased in a pulse form, up to around the upper layer at 120 m, allowing measurements in almost all of the layers. The time period of this pulse corresponded to the shift from an ebb tide to high tide. With the exception of these pulses, the currents could only be recorded from the seafloor to about a 40 m layer. This result indicated that a suitable environment for AdCP measurements was formed only within this range. To investigate the cause, a numerical model experiment was performed for the bottom turbulence and subsequent occurrence of vertical mixing of the suspended particulate matter in the Okinawa Trough using a large-eddy simulation (LES) model. The simulated results suggested that the semidiurnal tide periodically enhances the bottom turbulence at intervals of approximately 6 h, with the result that the bottom mixed layer thickness increases to a maximum of approximately 40-60 m. It was concluded that a suitable environment for AdCP

关键词： Fluid environment Hydrothermal field AdCP Bottom mixed layer Okinawa trough Current measurement

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