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Optical Design and Fabrication, OFT 2017

作者： Taylor, L.L. Frechem, J.C. Han, H. Xu, J. Smith, T.R. Pomerantz, M. Lambropoulos, J.C. Qiao, J. Rochester Institute of Technology Chester F. Carlson Center for Imaging Science RochesterNY United States Institute of Physics Chinese Academy of Science Beijing China Department of Mechanical Engineering University of Rochester RochesterNY United States Materials Science Program University of Rochester RochesterNY United States Laboratory for Laser Energetics University of Rochester RochesterNY United States

Femtosecond laser-germanium interaction was simulated to predict the thermal impact of laser processing parameters. Initial experimental processing was carried out to investigate predicted thermal impact on germanium ... 详细信息

ISBN: (纸本)9781943580316

关键词： Germanium

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Noncollinearity-modulated electronic properties of the monolayer CrI3

arXiv

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arXiv 2018年

作者： Ren, Lingling Liu, Qian Xu, Pengxiang Zhong, Zhicheng Yang, Li Yuan, Zhe Xia, Ke Center for Advanced Quantum Studies and Department of Physics Beijing Normal University Beijing100875 China Key Lab. of Magnetic Mat. and Devices and Zhejiang Prov. Key Lab. of Magnetic Mat. and Applic. Technol. Ningbo Institute of Materials Technology and Engineering Chinese Academy of Sciences Ningbo315201 China Department of Physics and Institute of Materials Science and Engineering Washington University in St. Louis St. LouisMI63130 United States

Introducing noncollinear magnetization into a monolayer CrI3 is proposed to be an effective approach to modulate the local electronic properties of the two-dimensional (2D) magnetic material. Using first-principles calculation, we illustrate that both the conduction and valence bands in the monolayer CrI3 are lowered down by spin spiral states. The distinct electronic structure of the monolayer noncollinear CrI3 can be applied in nanoscale functional devices. As a proof of concept, we show that a magnetic domain wall can form a one-dimensional conducting channel of in the 2D semiconductor via proper gating. This conducting channel is approximately 7 nm wide and has the carrier concentration of 1013 1014 cm2. Copyright © 2018, The Authors. All rights reserved.

关键词： Monolayers

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Nonlocal Quantum Erasure of Phase Objects

arXiv

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arXiv 2019年

作者： Gao, Lu Zhang, Yingwen Cohen, Eliahu Elitzur, Avshalom C. Karimi, Ebrahim School of Science China University of Geosciences Beijing 100083 China Physics Department University of Ottawa Advanced Research Complex 25 Templeton Street OttawaONK1N 6N5 Canada National Research Council of Canada 100 Sussex Drive OttawaONK1A0R6 Canada Faculty of Engineering Institute of Nanotechnology and Advanced Materials Bar Ilan University Ramat Gan5290002 Israel Iyar Israeli Institute for Advanced Research POB 651 Zichron Ya’akov3095303 Israel Institute for Quantum Studies Chapman University Orange CA92866 United States

The Franson interference is a fourth order interference effect, which unlike the better known Hong-Ou-Mandel interference, does not require the entangled photon pairs to be present at the same space-time location for interference to occur – it is nonlocal. Here, we use a modified Franson interferometer to experimentally demonstrate the nonlocal erasure and correction of an image of a phase-object taken through coincidence imaging. This non-local quantum erasure technique can have several potential applications such as phase corrections in quantum imaging and microscopy and also user authentication of two foreign distant parties. Copyright © 2019, The Authors. All rights reserved.

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Corrigendum to "Phylogenomics of the genus Tursiops and closely related delphininae reveals extensive reticulation among lineages and provides inference about eco-evolutionary drivers" [Mol. Phylogenet. Evol. 146 (2020) 106756]

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Molecular phylogenetics and evolution 2021年 157卷 107047页

作者： Andre E Moura Kypher Shreves Małgorzata Pilot Kimberly R Andrews Daniel M Moore Takushi Kishida Luciana Möller Ada Natoli Stefania Gaspari Michael McGowen Ing Chen Howard Gray Mauvis Gore Ross M Culloch Muhammad S Kiani Maia Sarrouf Willson Asma Bulushi Tim Collins Robert Baldwin Andrew Willson Gianna Minton Louisa Ponnampalam A Rus Hoelzel Museum and Institute of Zoology Polish Academy of Sciences Poland School of Life Sciences University of Lincoln UK. Electronic address: avmoura@miiz.waw.pl. School of Life Sciences University of Lincoln UK Institute of Medical Sciences School of Medical Sciences University of Aberdeen UK. School of Life Sciences University of Lincoln UK. Institute for Bioinformatics and Evolutionary Studies (IBEST) University of Idaho USA. School of Biosciences Durham University UK. Wildlife Research Center Kyoto University Japan. College of Science and Engineering Flinders University Australia. College of Natural and Health Sciences Zayed University United Arab Emirates. Consiglio Nazionale delle Ricerche-Istituto di Scienze Marine Ancona Italy. Smithsonian National Museum of Natural History USA. Division of Science Yale-NUS College Singapore. Marine Conservation International UK. School of Biosciences Durham University UK Marine Scotland Science Scottish Government Marine Laboratory UK. Institute of Marine Science University of Karachi Pakistan. Environment Society of Oman Oman. Ocean Giants Program Wildlife Conservation Society USA. Five Oceans Environmental Services Oman. Megaptera Marine Conservation Netherlands. The MareCet Research Organization Malaysia. School of Biosciences Durham University UK. Electronic address: a.r.hoelzel@dur.ac.uk.

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The effect of green supply chain management implementation to marketing performance through company competitiveness (study on paper industry in West Java)

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Journal of Physics: Conference Series 2018年第1期1013卷

作者： O Hijuzaman A Rahayu Kusnendi Management Science Doctoral Studies Program School of Graduate Studies Indonesia University of Education Depok Indonesia Industrial Engineering Program STT Wastukancana Purwakarta Indonesia

The purpose of this study was to determine and analyze the effect of direct and indirect implementation of Green Supply-Chain Management (GSCM) on the Performance Marketing and Competitiveness Mediation Paper Company in West Java province. Object This research is the paper company that existed in West Java Province, which amounts to 30 companies as well as a sample of research, while variables studied are Variable Green Supply- Chain Management, Company Competitiveness Variable and Variable of Paper Marketing Industry Performance in West Java Province. The method used SEM with Variance Based or Component Based with Software used is SmartPLS 3.0. On this research are identified that no effect of Competitiveness on Marketing Performance in Paper Companies in West Java Province.

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Techno-economic evaluation of a chemical looping combustion plant with waste heat utilization

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Energy Procedia 2017年 142卷 2990-2995页

作者： Oghare Victor Ogidiama Tariq Shamim Department of Mechanical and Materials Engineering Masdar Institute of Science and Technology P.O. Box 54224 Abu Dhabi UAE Mechanical Engineering Program University of Michigan-Flint Flint MI 48502 USA

Chemical looping combustion (CLC) is a promising candidate for cost effective means of CO 2 capture and higher energy production from power plants. The CLC process uses an oxygen carrier (usually a metal) for the separation of oxygen from air and the oxygen is then used for fuel combustion. The two processes occur in two inter-connected reactors which are generally termed air and fuel reactors. The fuel combustion process results in a rich stream of CO 2 and water. The CO 2 stream is captured with negligible energy consumption by condensation of the exhaust gases. In this paper, the technical and economic performance of a power plant using CLC with two methods of waste heat utilization from the plant exhaust gas streams is studied. The plant studied is a natural gas powered plant of 50MWth gross input energy. The waste heat is utilized either for additional output energy generation using a steam turbine or for cooling using absorption chilling. The economic analysis shows a higher economic value of the waste utilization for cooling purpose compared to additional power generation. For the absorption chilling system, the cost of electricity (COE) is about 5.5 cents/kWh and has a payback period of about 6.4 years using the method employed in the study while the payback period is 3.3 years using a generic methodology employed in other studies.

关键词： Chemical looping combustion waste heat utilization steam turbine absorption chilling COE

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Energy landscape of ZnO clusters and low-density polymorphs

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Physical Review B 2017年第6期96卷 064108-064108页

作者： Robabe Rasoulkhani Hossein Tahmasbi S. Alireza Ghasemi Somayeh Faraji Samare Rostami Maximilian Amsler Department of Physics Institute for Advanced Studies in Basic Sciences (IASBS) Zanjan 45137-66731 Iran Department of Materials Science and Engineering Northwestern University Evanston Illinois 60208 USA

We report on an extensive study of ZnO materials with cagelike motifs in clusters and bulk phases through structural searches using the minima hopping method. A novel putative ground state was discovered for the (ZnO)32 cluster with a tubelike structure, closely related to the previously reported (ZnO)24 ground-state cage geometry. Furthermore, the effect of ionization on the geometries and energetic ordering of (ZnO)n clusters with n=3–10,12 was studied by directly sampling the energy landscape of the ionized system. Our results indicate that the transition from ring and planar structures to three-dimensional cages occurs at larger cluster sizes than in the neutral system. Inspired by the bottom-up design philosophy and the predominance of cagelike structures in medium-sized clusters, a search for crystalline ZnO was conducted aimed specifically at low-density polymorphs, resulting in the discovery of 57 novel metastable phases. The voids in these low-density materials closely resemble the hollow cage structures of small (ZnO)n/(ZnO)n+ clusters with n<16. Analogous to clathrate materials, these voids could serve to accommodate guest atoms to tailor the materials properties for various applications.

关键词： Crystal structure Semiconductors Artificial neural networks Density functional theory

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Hyperuniformity and anti-hyperuniformity in one-dimensional substitution tilings

arXiv

引用

arXiv 2018年

作者： Oguz, Erdal C. Socolar, Joshua E.S. Steinhardt, Paul J. Torquato, Salvatore School of Mechanical Engineering Sackler Center for Computational Molecular and Materials Science Tel Aviv University Tel Aviv Israel Physics Department Duke University DurhamNC27708 United States Department of Physics Princeton Center for Theoretical Science Princeton University PrincetonNJ08544 United States Center for Cosmology and Particle Physics Department of Physics New York University New YorkNY10003 United States Department of Chemistry Department of Physics Princeton Institute for the Science and Technology of Materials Program in Applied and Computational Mathematics Princeton University PrincetonNJ08540 United States

We consider the scaling properties characterizing the hyperuniformity (or anti-hyperuniformity) of long wavelength fluctuations in a broad class of one-dimensional substitution tilings. We present a simple argument that predicts the exponent α governing the scaling of Fourier intensities at small wavenumbers, tilings with α > 0 being hyperuniform, and confirm with numerical computations that the predictions are accurate for quasiperiodic tilings, tilings with singular continuous spectra, and limit-periodic tilings. Tilings with quasiperiodic or singular continuous spectra can be constructed with α arbitrarily close to any given value between −1 and 3. Limit-periodic tilings can be constructed with α between −1 and 1 or with Fourier intensities that approach zero faster than any power law. Copyright © 2018, The Authors. All rights reserved.

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Polybenzimidazole membranes with nanophase-separated structure induced by non-ionic hydrophilic side chains for vanadium flow batteries

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Journal of materials Chemistry A 2017年第9期6卷 3895-3905页

作者： Sangshan Peng Xuemei Wu Xiaoming Yan Li Gao Yangzhi Zhu Daishuang Zhang Jie Li Qian Wang Gaohong He State Key Laboratory of Fine Chemicals R&D Center of Membrane Science and Technology School of Chemical Engineering Dalian University of Technology Dalian China School of Petroleum and Chemical Engineering Dalian University of Technology Panjin China Department of Chemical and Environmental Engineering Materials Science Engineering Program Bourns College of Engineering University of California Riverside California 92521 USA

Polybenzimidazole (PBI) membranes with nanophase-separated structure induced by non-ionic hydrophilic side chain are designed and fabricated for vanadium flow batteries (VFBs). The designed PBI membranes are prepared by grafting non-ionic hydrophilic side chains via an N-substitution reaction. This molecular modification induces nanophase separation and formation of hydrophilic clusters, which act as effective proton transfer pathways, hence dramatically improving the proton conductivity. Meanwhile, the vanadium permeability is inappreciable due to the appropriate size of hydrophilic clusters and Donnan exclusion of protonated grafted-PBI membranes (GPBI). Free from ion exchange groups, GPBI membranes maintain the good chemical stability of the pristine PBI membrane. As a result, the designed membrane exhibits an impressive performance, combining ultrahigh proton conductivity, ion selectivity and chemical stability. The GPBI-based VFB exhibits a coulombic efficiency of over 99% and an energy efficiency of 84% at 120 mA cm⁻², the highest reported for dense PBI membranes for VFB applications. The decent stability of GPBI membranes is demonstrated by the stable performance over 200 charge–discharge cycles and the ex situ immersion test. This work provides a new insight into the design of high-performance PBI membranes for VFB applications.

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The ELIMÄKI Locus is Required for Vertical Proprioception in Birch Trees

SSRN

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SSRN 2019年

作者： Alonso-Serra, Juan Shi, Xueping Peaucelle, Alexis Rastas, Pasi Bourdon, Matthieu Immanen, Juha Takahashi, Junko Koivula, Hanna Eswaran, Gugan Muranen, Sampo Help, Hanna Smolander, Olli-Pekka Su, Chang Safronov, Omid Gerber, Lorenz Salojärvi, Jarkko Hagqvist, Risto Mähonen, Ari Pekka Nieminen, Kaisa Helariutta, Ykä Organismal and Evolutionary Biology Research Program Faculty of Biological and Environmental Sciences Viikki Plant Science Centre University of Helsinki Helsinki Finland Institute of Biotechnology HiLIFE University of Helsinki Helsinki Finland Key Laboratory of Horticultural Plant Biology of Ministry of Education College of Horticulture and Forestry Sciences Huazhong Agricultural University Wuhan430070 China Sainsbury Laboratory University of Cambridge Cambridge United Kingdom Institut Jean-Pierre Bourgin INRA AgroParisTech CNRS Université Paris-Saclay Versailles78000 France Helsinki Finland Umeå Plant Science Center Department of Forest Genetics and Plant Physiology Swedish University of Agricultural Sciences Umeå Sweden Department of Food and Nutrition Faculty of Agriculture and Forestry University of Helsinki Finland Department of Physics Division of Materials Sciences X-ray Laboratory University of Helsinki Helsinki Finland Department of Chemistry and Biotechnology School of Science Tallinn University of Technology Tallinn Estonia Genome Institute of Singapore Singapore138672 Singapore Singapore Centre for Environmental Life Sciences Engineering Nanyang Technological University Singapore63755 Singapore

Tree architecture has evolved to support a top-heavy above-ground biomass, but this integral feature poses a weight-induced challenge to trunk stability. Maintaining an upright stem is expected to require vertical proprioception through feedback between sensing stem weight and modulating radial growth. Despite its apparent importance, the principle by which plant stems respond to vertical loading forces remains largely unknown. Here, by manipulating the stem weight of downy birch (Betula pubescens) trees, we show that cambial development is modulated systemically along the stem. We carried out a genetic study on the underlying regulation by combining an accelerated birch flowering program with a recessive mutation at the ELIMÄKI locus (EKI), which causes a mechanically defective response to weight stimulus resulting in stem collapse after just three months. We observed delayed wood morphogenesis in eki compared with WT, along with a more mechanically elastic cambial zone and radial compression of xylem cell size, indicating that timely tissue differentiation is critical for cambial growth under mechanical stress. Furthermore, the touch-induced mechanosensory pathway was transcriptionally misregulated in eki, indicating that the ELIMÄKI locus is required to integrate the weight-growth feedback regulation. By studying this birch mutant, we were able to dissect vertical proprioception from the gravitropic response associated with reaction wood formation. Taken together, our study provides evidence for both local and systemic responses to mechanical stimuli during secondary plant development. © 2019, The Authors. All rights reserved.

关键词： Forestry

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