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Influence on distance between substrate and target on the properties of CuO thin film prepared by DC reactive magnetron sputtering

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Materials Today: Proceedings 2018年第6期5卷 13900-13903页

作者： N.W. Sangwaranatee N. Sangwaranatee C. Chananonnawathorn M. Horprathum Informatics Mathematics Faculty of Science and Technology Suan Sunandha Rajabhat University Bangkok 10300 Thailand Applied Physics Faculty of Science and Technology Suan Sunandha Rajabhat University Bangkok 10300 Thailand Optical Thin-Film Laboratory National Electronics and Computer Technology Center 112 Thailand Science Park Phahonyothin Rd. Klong 1 Klong Luang Pathumthani 12120 Thailand

The Copper thin films were grown on glass slide and silicon wafer substrate by DC reactive magnetron sputtering with a 99.995% pure copper target. The distance between substrate and target was varied from 87 to 117 mm. The structural, morphology and electrical properties of the prepared samples were investigated by X-ray diffraction (XRD), field-emission electron microscope (FE-SEM) and four-point-probe, respectively. All of the prepared samples were polycrystalline with a monoclinic tenorite. In addition, as the distance from substrate and target decreases further, the grain size increases and sheet resistance decreases.

关键词： Copper oxide Magnetron Sputtering Structure Sheet resistance

Large proton cumulants from the superposition of ordinary multiplicity distributions

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arXiv 2018年

作者： Bzdak, Adam Koch, Volker Oliinychenko, Dmytro Steinheimer, Jan AGH University of Science and Technology Faculty of Physics and Applied Computer Science Kraków30-059 Poland Nuclear Science Division Lawrence Berkeley National Laboratory BerkeleyCA94720 United States Frankfurt Institute for Advanced Studies Ruth-Moufang-Str. 1 Frankfurt am MainD-60438 Germany

We construct a multiplicity distribution characterized by large factorial cumulants (integrated correlation functions) from a simple combination of two ordinary multiplicity distributions characterized by small factorial cumulants. We find that such a model, which could be interpreted as representing two event classes, reproduces the preliminary data for the proton cumulants measured by the STAR collaboration at 7.7 GeV very well. This model then predicts very large values for the fifth and sixth order factorial cumulants, which can be tested in experiment. Copyright © 2018, The Authors. All rights reserved.

关键词： Germanium alloys

Milky Way Satellite Census. IV. Constraints on Decaying Dark Matter from Observations of Milky Way Satellite Galaxies

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arXiv 2022年

作者： Mau, Sidney Nadler, E.O. Wechsler, R.H. Drlica-Wagner, A. Bechtol, K. Green, G. Huterer, D. Li, T.S. Mao, Y.-Y. Martínez-Vázquez, C.E. McNanna, M. Mutlu-Pakdil, B. Pace, A.B. Peter, A. Riley, A.H. Strigari, L. Wang, M.-Y. Aguena, M. Allam, S. Annis, J. Bacon, D. Bertin, E. Bocquet, S. Brooks, D. Burke, D.L. Carnero Rosell, A. Carrasco Kind, M. Carretero, J. Costanzi, M. Crocce, M. Pereira, M.E.S. Davis, T.M. De Vicente, J. Desai, S. Doel, P. Ferrero, I. Flaugher, B. Frieman, J. García-Bellido, J. Gatti, M. Giannini, G. Gruen, D. Gruendl, R.A. Gschwend, J. Gutierrez, G. Hinton, S.R. Hollowood, D.L. Honscheid, K. James, D.J. Kuehn, K. Lahav, O. Maia, M.A.G. Marshall, J.L. Miquel, R. Mohr, J.J. Morgan, R. Ogando, R.L.C. Paz-Chinchón, F. Pieres, A. Rodriguez-Monroy, M. Sanchez, E. Scarpine, V. Serrano, S. Sevilla-Noarbe, I. Suchyta, E. Tarle, G. To, C. Tucker, D.L. Weller, J. Department of Physics Stanford University 382 Via Pueblo Mall StanfordCA94305 United States Kavli Institute for Particle Astrophysics & Cosmology Stanford University P. O. Box 2450 StanfordCA94305 United States Carnegie Observatories 813 Santa Barbara Street PasadenaCA91101 United States Department of Physics & Astronomy University of Southern California Los AngelesCA90007 United States SLAC National Accelerator Laboratory Menlo ParkCA94025 United States Department of Astronomy and Astrophysics University of Chicago ChicagoIL60637 United States Fermi National Accelerator Laboratory P. O. Box 500 BataviaIL60510 United States Kavli Institute for Cosmological Physics University of Chicago ChicagoIL60637 United States Physics Department 2320 Chamberlin Hall University of Wisconsin-Madison 1150 University Avenue MadisonWI53706-1390 United States Max Planck Institute for Astronomy Königstuhl 17 HeidelbergD-69117 Germany Department of Physics University of Michigan Ann ArborMI48109 United States Department of Astronomy and Astrophysics University of Toronto 50 St. George Street TorontoONM5S 3H4 Canada Department of Physics and Astronomy Rutgers The State University of New Jersey PiscatawayNJ08854 United States Cerro Tololo Inter-American Observatory NSF’s National Optical-Infrared Astronomy Research Laboratory Casilla 603 La Serena Chile Department of Physics Carnegie Mellon University PittsburghPA15312 United States Center for Cosmology and Astro-Particle Physics The Ohio State University ColumbusOH43210 United States George P. and Cynthia Woods Mitchell Institute for Fundamental Physics and Astronomy Department of Physics and Astronomy Texas A&M University College StationTX77843 United States Laboratório Interinstitucional de e-Astronomia - LIneA Rua Gal. José Cristino 77 RJ Rio de Janeiro20921-400 Brazil Institute of Cosmology and Gravitation University of Portsmouth PortsmouthPO1 3FX United Kingdom CNRS UMR 7095 Insti

We use a recent census of the Milky Way (MW) satellite galaxy population to constrain the lifetime of particle dark matter (DM). We consider two-body decaying dark matter (DDM) in which a heavy DM particle decays with lifetime τ comparable to the age of the universe to a lighter DM particle (with mass splitting t) and to a dark radiation species. These decays impart a characteristic "kick velocity," Vkick = tc, on the DM daughter particles, significantly depleting the DM content of low-mass subhalos and making them more susceptible to tidal disruption. We fit the suppression of the present-day DDM subhalo mass function (SHMF) as a function of τ and Vkick using a suite of high-resolution zoom-in simulations of MW-mass halos, and we validate this model on new DDM simulations of systems specifically chosen to resemble the MW. We implement our DDM SHMF predictions in a forward model that incorporates inhomogeneities in the spatial distribution and detectability of MW satellites and uncertainties in the mapping between galaxies and DM halos, the properties of the MW system, and the disruption of subhalos by the MW disk using an empirical model for the galaxy–halo connection. By comparing to the observed MW satellite population, we conservatively exclude DDM models with τ kick = 20 km s−1 (40 km s−1) at 95% confidence. These constraints are among the most stringent and robust small-scale structure limits on the DM particle lifetime and strongly disfavor DDM models that have been proposed to alleviate the Hubble and S8 tensions. Copyright © 2022, The Authors. All rights reserved.

关键词： Galaxies

Influence of investment casting parameters on creep resistance of Ni-based superalloy

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Influence of investment casting parameters on creep resistan...

73rd World Foundry Congress: Creative Foundry, WFC 2018

作者： Rakoczy, Lukasz Cygan, Rafal Grudzień, Malgorzata AGH University of Science and Technology Faculty of Metals Engineering and Industrial Computer Science av. Mickiewicza 30 Krakow30-059 Poland Consolidated Precision Products ul. Hetmanska 120 Rzeszow35-078 Poland Foundry Research Institute ul. Zakopianska 73 Krakow30-418 Poland

ISBN: (纸本)9788390430638

In this paper the high temperature creep properties of polycrystalline IN713C Ni-based superalloy have been investigated taking into consideration different casting parameters: melt pouring temperature and composition of primary coating of shell mould. The size of the grains in the castings can be controlled by thermal methods and the introduction of seeds for crystallization, namely surface modification. The selection of the optimal grain size in precision castings depends on the final position of the component in the aircraft engine, which determines the mechanism of microstructural degradation during service. In order to meets the requirements of industrial standards time to rupture must be longer than 25 hours with elongation till aforementioned rupture min. 5% independently from the size of grain. The aim of this investigation was to prepare the correlation between casting parameters with microstructure and creep resistance of IN713C Ni-based superalloy. © 73rd World Foundry Congress "Creative Foundry", WFC 2018 - *** Rights Reserved.

关键词： Creep

Limits on contact interactions and leptoquarks at HERA

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Physical Review D 2019年第9期99卷 092006-092006页

作者： H. Abramowicz I. Abt L. Adamczyk M. Adamus R. Aggarwal S. Antonelli V. Aushev O. Behnke U. Behrens A. Bertolin I. Bloch I. Brock N. H. Brook R. Brugnera A. Bruni P. J. Bussey A. Caldwell M. Capua C. D. Catterall J. Chwastowski J. Ciborowski R. Ciesielski A. M. Cooper-Sarkar M. Corradi R. K. Dementiev R. C. E. Devenish S. Dusini J. Ferrando B. Foster E. Gallo A. Garfagnini A. Geiser A. Gizhko L. K. Gladilin Yu. A. Golubkov G. Grzelak C. Gwenlan O. Hlushchenko D. Hochman Z. A. Ibrahim Y. Iga N. Z. Jomhari I. Kadenko S. Kananov U. Karshon P. Kaur D. Kisielewska R. Klanner U. Klein I. A. Korzhavina A. Kotański N. Kovalchuk H. Kowalski B. Krupa O. Kuprash M. Kuze B. B. Levchenko A. Levy V. Libov M. Lisovyi B. Löhr E. Lohrmann A. Longhin O. Yu. Lukina I. Makarenko J. Malka S. Masciocchi F. Mohamad Idris N. Mohammad Nasir V. Myronenko K. Nagano J. D. Nam M. Nicassio J. Onderwaater Yu. Onishchuk E. Paul I. Pidhurskyi N. S. Pokrovskiy A. Polini M. Przybycień A. Quintero M. Ruspa D. H. Saxon M. Schioppa U. Schneekloth T. Schörner-Sadenius I. Selyuzhenkov M. Shchedrolosiev L. M. Shcheglova Yu. Shyrma I. O. Skillicorn W. Słomiński A. Solano L. Stanco N. Stefaniuk A. Stern P. Stopa B. Surrow J. Sztuk-Dambietz E. Tassi K. Tokushuku J. Tomaszewska T. Tsurugai M. Turcato O. Turkot T. Tymieniecka A. Verbytskyi W. A. T. Wan Abdullah K. Wichmann M. Wing S. Yamada Y. Yamazaki A. F. Żarnecki L. Zawiejski O. Zenaiev B. O. Zhautykov Raymond and Beverly Sackler Faculty of Exact Sciences School of Physics Tel Aviv University Tel Aviv Israel Max-Planck-Institut für Physik München Germany AGH University of Science and Technology Faculty of Physics and Applied Computer Science Krakow Poland National Centre for Nuclear Research Warsaw Poland Panjab University Department of Physics Chandigarh India INFN Bologna Bologna Italy Department of Nuclear Physics National Taras Shevchenko University of Kyiv Kyiv Ukraine Deutsches Elektronen-Synchrotron DESY Hamburg Germany INFN Padova Padova Italy Deutsches Elektronen-Synchrotron DESY Zeuthen Germany Physikalisches Institut der Universität Bonn Bonn Germany Physics and Astronomy Department University College London London United Kingdom Dipartimento di Fisica e Astronomia dell’ Università and INFN Padova Italy School of Physics and Astronomy University of Glasgow Glasgow United Kingdom Calabria University Physics Department and INFN Cosenza Italy Department of Physics York University Ontario Canada M3J 1P3 The Henryk Niewodniczanski Institute of Nuclear Physics Polish Academy of Sciences Krakow Poland Faculty of Physics University of Warsaw Warsaw Poland Department of Physics University of Oxford Oxford United Kingdom Lomonosov Moscow State University Skobeltsyn Institute of Nuclear Physics Moscow Russia Hamburg University Institute of Experimental Physics Hamburg Germany Department of Particle Physics and Astrophysics Weizmann Institute Rehovot Israel National Centre for Particle Physics Universiti Malaya 50603 Kuala Lumpur Malaysia Polytechnic University Tokyo Japan Department of Physics Jagellonian University Krakow Poland Department of Physics Tokyo Institute of Technology Tokyo Japan GSI Helmholtzzentrum für Schwerionenforschung GmbH Darmstadt Germany Institute of Particle and Nuclear Studies KEK Tsukuba Japan Department of Physics Temple University Philadelphia Pennsylvania 19122 USA Physikalisches Institut of the Universit

High-precision HERA data corresponding to a luminosity of around 1 fb−1 have been used in the framework of eeqq contact interactions (CI) to set limits on possible high-energy contributions beyond the Standard Model to electron-quark scattering. Measurements of the inclusive deep inelastic cross sections in neutral and charged current ep scattering were considered. The analysis of the ep data has been based on simultaneous fits of parton distribution functions including contributions of CI couplings to ep scattering. Several general CI models and scenarios with heavy leptoquarks were considered. Improvements in the description of the inclusive HERA data were obtained for a few models. Since a statistically significant deviation from the Standard Model cannot be established, limits in the TeV range were set on all models considered.

关键词： Deep inelastic scattering Hypothetical particle physics models Hypothetical particles Leptoquarks Lepton-hadron colliders

Automated lesion detection by regressing intensity-based distance with a neural network

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arXiv 2019年

作者： Wijnen, Kimberlin M.H. Van Dubost, Florian Yilmaz, Pinar Ikram, M. Arfan Niessen, Wiro J. Adams, Hieab Vernooij, Meike W. Bruijne, Marleen De Biomedical Imaging Group Rotterdam Department of Radiology and Nuclear Medicine Erasmus Rotterdam Netherlands Departments of Radiology and Nuclear Medicine and of Epidemiology Erasmus Rotterdam Netherlands Department of Neurology Erasmus MC Rotterdam Netherlands Department of Imaging Physics Faculty of Applied Sciences Delft Netherlands Department of Computer Science University of Copenhagen

Localization of focal vascular lesions on brain MRI is an important component of research on the etiology of neurological disorders. However, manual annotation of lesions can be challenging, timeconsuming and subject to observer bias. Automated detection methods often need voxel-wise annotations for training. We propose a novel approach for automated lesion detection that can be trained on scans only annotated with a dot per lesion instead of a full segmentation. From the dot annotations and their corresponding intensity images we compute various distance maps (DMs), indicating the distance to a lesion based on spatial distance, intensity distance, or both. We train a fully convolutional neural network (FCN) to predict these DMs for unseen intensity images. The local optima in the predicted DMs are expected to correspond to lesion locations. We show the potential of this approach to detect enlarged perivascular spaces in white matter on a large brain MRI dataset with an independent test set of 1000 scans. Our method matches the intra-rater performance of the expert rater that was computed on an independent set. We compare the different types of distance maps, showing that incorporating intensity information in the distance maps used to train an FCN greatly improves performance. Copyright © 2019, The Authors. All rights reserved.

关键词： Magnetic resonance imaging

Influence of film thickness on microstructural and electrical properties of copper oxide thin film prepared by magnetron sputtering

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Materials Today: Proceedings 2018年第7期5卷 15198-15202页

作者： N.W. Sangwaranatee N. Sangwaranatee M. Horprathum C. Chananonnawathorn E. Sustini Informatics Mathematics Faculty of Science and Technology Suan Sunandha Rajabhat University Bangkok 10300 Thailand Applied Physics Faculty of Science and Technology Suan Sunandha Rajabhat University Bangkok 10300 Thailand Optical Thin-Film Laboratory National Electronics and Computer Technology Center Pathumthani 12120 Thailand Faculty of Mathematics and Natural Sciences Institut Teknologi Bandung 40132 Indonesia

In this present work, the copper oxide (CuO) thin films were deposited by dc reactive magnetron sputtering on silicon (100) wafer. The microstructural evolution of the CuO thin films were investigated as a function of film thickness at the range of 150 to 600 nm by X-ray diffraction (XRD) and field-emission scanning electron microscopy (FE-SEM). The optical transmittance was measured by UV-VIS-NIR spectrophotometer. The sheet resistances of the CuO thin films were characterized by four-point-probe measurement. The results indicated that the obtained films were polycrystalline. The surface roughness of the CuO thin film showed an increasing with film thickness. In addition, the relationship between film thickness, morphology and electrical property were discussed in this paper.

关键词： CuO Microstrural Sputtering Electrical property

Automatic system for stitching microscopic images using OpenPano

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AIP Conference Proceedings 2020年第1期2314卷

作者： Imas Sukaesih Sitanggang Auriza Akbar Riries Rulaningtyas Andriyan Bayu Suksmono Kuwat Triyana Dwi Winarni 1Departement of Computer Science IPB University Bogor Indonesia 2Department of Physics Airlangga University Surabaya. Indonesia 3School of Electrical Engineering and Informatics Institute of technology Bandung Bandung Indonesia 4Department of Physics Gadjah Mada University Yogyakarta Indonesia 5Department of Biology Faculty of Science and Technology Airlangga University Surabaya Indonesia

Analyzing pap smear images by manual reading through a microscope is a challenge for doctors especially in distinguishing epithelial cells from inflammatory cells. A computer-based application is required for cervical cancer screening and displaying the results of reading automatically pap smear images using a microscope. This study aims to develop a module for stitching microscopic images including pap smear images which are collected from a microscope. A module for automatically stitching pap smear images is an important component in pap smear images management system. There are three tasks in stitching several pap smear images which were implemented in this study. Those three tasks include 1) feature extraction with scale-invariant feature transform, 2) estimation of homography or affine transformation by random sample consensus and 3) optimization of connection between images with bundle adjustment and blending. We use OpenPano to implement those three tasks. The system has successfully stitched the pap smear images with the feature overlap among the images greater than 10%. The stitched pap smear image has good quality after smoothing using the vertical blending step. In addition, blurry pixels on in some spots disappeared after performing the stitching error. The image quality has been improved after the multiband blending using 16-band and 128-band which shows the significant improvement on the 128-band. The system is expected to assist doctors in pap smear image identification.

关键词：

Lotka-Volterra competition mechanism embedded in a decision-making method

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arXiv 2019年

作者： Niiyama, Tomoaki Furuhata, Genki Uchida, Atsushi Naruse, Makoto Sunada, Satoshi Faculty of Mechanical Engineering Institute of Science and Engineering Kanazawa University Kakuma-machi KanazawaIshikawa920-1192 Japan Graduate School of Natural Science and Technology Kanazawa University Kakuma-machi KanazawaIshikawa920-1192 Japan Department of Information and Computer Sciences Saitama University 255 Shimo-Okubo Sakura-ku Saitama CitySaitama338-8570 Japan Department of Information Physics and Computing Graduate School of Information Science and Technology University of Tokyo 7-3-1 Hongo Bunkyo-kuTokyo113-8656 Japan

Decision making is a fundamental capability of living organisms, and has recently been gaining increasing importance in many engineering applications. Here, we consider a simple decision-making principle to identify an optimal choice in multi-armed bandit (MAB) problems, which is fundamental in the context of reinforcement learning. We demonstrate that the identification mechanism of the method is well described by using a competitive ecosystem model, i.e., the competitive Lotka-Volterra (LV) model. Based on the "winner-take-all" mechanism in the competitive LV model, we demonstrate that non-best choices are eliminated and only the best choice survives;the failure of the non-best choices exponentially decreases while repeating the choice trials. Furthermore, we apply a mean-field approximation to the proposed decision-making method and show that the method has an excellent scalability of O(log N) with respect to the number of choices N. These results allow for a new perspective on optimal search capabilities in competitive systems. Copyright © 2019, The Authors. All rights reserved.

关键词： Decision making