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填充的范德华网络

合成橡胶工业 1988年第S1期 72-77页

作者： H.G.Kilian 李东红 institut fur Experimental physik Ulm (W.Germany) University Oberer Eselsberg FR Germany.

本文深入地阐明了填料填充硫化胶的范德华网络模型的基本想法。建立了有关数学公式,着重讨论其永久性交联键(“填充胶胶”、“填料网络”和“填料-网络-橡胶”)在拓扑学上具有不同构型的复合材料。通过定量表征包括在准静态条件下的 Mul... 详细信息

本文深入地阐明了填料填充硫化胶的范德华网络模型的基本想法。建立了有关数学公式,着重讨论其永久性交联键(“填充胶胶”、“填料网络”和“填料-网络-橡胶”)在拓扑学上具有不同构型的复合材料。通过定量表征包括在准静态条件下的 Mullins软化现象在内的简单拉伸试验来阐述本方法的特点。

关键词：范德华硫化胶方程式方程填料粒子

Effects of a phase transition on two-pion interferometry in heavy ion collisions at √SNN=2.4-7.7 GeV

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Science China(Physics,Mechanics & Astronomy) 2023年第3期66卷 88-97页

作者： Pengcheng Li Jan Steinheimer Tom Reichert Apiwit Kittiratpattana Marcus Bleicher Qingfeng Li institut fur Theoretische physik Johann Wolfgang Goethe Universitat FrankfurtFrankfurt am Main 60438Germany School of Science Huzhou UniversityHuzhou 313000China School of Nuclear Science and Technology Lanzhou UniversityLanzhou 730000China Frankfurt institute for Advanced Studies Frankfurt am Main 60438Germany GSI Helmholtzzentrum f¨urSchwerionenforschung GmbH Darmstadt 64291Germany Helmholtz Research Academy Hesse for FAIR(HFHF) GSI Helmholtz Center for Heavy Ion PhysicsCampus FrankfurtFrankfurt am Main 60438Germany Center of Excellence in High Energy Physics&Astrophysics School of PhysicsSuranaree University of TechnologyNakhon Ratchasima 30000Thailand

Hanbury-Brown-Twiss(HBT) correlations for charged pions in central Au+Au collisions at √SNN=2.4-7.7 GeV(corresponding to beam kinetic energies in the fixed target frame from Elab=1.23 to 30 GeV/nucleon) are calculated using the ultra-relativistic quantum molecular dynamics model with different equations of state(EoSs).The effects of a phase transition at high baryon densities are clearly observed in the explored HBT *** results show that the available data on the HBT radii,RO/RSand R^(2)_(O)-R^(2)_(S),in the investigated energy region favor a relatively stiff EoS at low beam energies,which then turns into a soft EoS at high collision energies consistent with astrophysical constraints on the high-density EoS of quantum chromodynamics(QCD).The specific effects of two different phase transition scenarios on RO/RSand R^(2)_(O)-R^(2)_(S)are investigated.A phase transition with a significant softening of the EoS below four times the nuclear saturation density can be excluded using HBT *** results highlight that the pion’s RO/RSand R^(2)_(O)-R^(2)_(S)are sensitive to the stiffness of the EoS and can be used to constrain and understand the QCD EoS in a high baryon density region.

关键词： heavy ion collisions HBT correlation equation of state

Author Correction:Different types of spin currents in the comprehensive materials database of nonmagnetic spin Hall effect

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npj Computational Materials 2021年第1期7卷 1762-1763页

作者： Yang Zhang Qiunan Xu Klaus Koepernik Roman Rezaev Oleg Janson Jakub Železný Tomáš Jungwirth Claudia Felser Jeroen van den Brink Yan Sun max planck institute for Chemical Physics of Solids 01187 Dresden Germany Leibniz institute for Solid State and Materials Research 01069 Dresden Germany Department of Physics Massachusetts Institute of Technology Cambridge MA 02139 USA Center for Nanoscale Systems Faculty of Arts and Sciences Harvard University 11 Oxford Street LISE 308 Cambridge MA 02138 USA institut fur Theoretische physik and Wurzburg-Dresden Cluster of Excellence ct.qmat Dresden University of Technology 01062 Dresden Germany institute of Physics Czech Academy of Sciences Cukrovarnicka 10 162 00 Praha 6 Czech Republic School of Physics and Astronomy University of Nottingham NG7 2RD Nottingham United Kingdom

The original version of this Article contained errors in Fig.3b,d,in which a factor of“100”should be included in the unit for both y-axis labels“SHC[100(ħ/e)(S/cm)]”.This has been corrected in both the PDF and HTM... 详细信息

关键词： database HTML include

Probing top-quark couplings indirectly at Higgs factories

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Chinese Physics C 2018年第12期42卷 53-65页

作者： Gauthier Durieux Jiayin Gu Eleni Vryonidou Cen Zhang DESY Notkestratle 85 D-22607HamburgGermany PRISMA Cluster of Excellence Institut ffir PhysikJohannes Gutenberg-Universitgt55099 MainzGermany Theoretical Physics Department CERN1211 Geneva 23Switzerland institute of High Energy Physics and School of Physical SciencesUniversity of Chinese Academy of SciencesBeijing 100049China

We perform a global effective-field-theory analysis to assess the combined precision of Higgs couplings, triple gauge-boson couplings, and top-quark couplings, at future circular e＋e- colliders, with a focus on runs below the tt-production threshold. Deviations in the top-quark sector entering as one-loop corrections are consistently taken into account in the Higgs and diboson processes. We find that future lepton colliders running at center-of-mass energies below the tt production threshold can still provide useful information on top-quark couplings, by measuring virtual top-quark effects. With rate and differential measurements, the indirect individual sensitivity achievable is better than at the high-luminosity LHC. However, strong correlations between the extracted top-quark and Higgs couplings are also present and lead to much weaker global constraints on top-quark couplings. This implies that a direct probe of top-quark couplings above the t~ production threshold is also helpful for the determination of Higgs and triple-gauge-boson couplings. In addition, we find that below the e＋e- -＋tth production threshold, the top-quark Yukawa coupling can be determined by its loop corrections to all Higgs production and decay channels. Degeneracy with the ggh coupling can be resolved, and even a global limit is competitive with the prospects of a linear collider above the threshold. This provides an additional means of determining the top-quark Yukawa coupling indirectly at lepton colliders.

关键词： effective field theory top quark lepton collider

Superconductivity from buckled-honeycomb-vacancy ordering

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Science Bulletin 2021年第4期66卷 327-331,M0003页

作者： Yanpeng Qi Tianping Ying Xianxin Wu Zhuoya Dong Masato Sasase Qing Zhang Weiyan Liu Masaki Ichihara Yanhang Ma Jiangping Hu Hideo Hosono School of Physical Science and Technology ShanghaiTech UniversityShanghai 201210China Materials Research Center for Element Strategy Tokyo Institute o f TechnologyYokohama 226-8503Japan institut fur Theoretische physik und Astrophysik Julius-Maximilians-Universitat WurzburgWurzburg 97074Germany Beijing National Laboratory for Condensed Matter Physics and institute of Physics Chinese Academy of Sciences.Beijing 100190China

Vacancies are prevalent and versatile in solid-state physics and materials *** role of vacancies in strongly correlated materials,however,remains uncultivated until ***,we report the discovery of an unprecedented vacancy state forming an extended buckled-honeycomb-vacancy(BHV)ordering in *** emerges by suppressing the BHV ordering through squeezing of extra Ir atoms into the vacancies or isovalent Rh *** phase diagram on vacancy ordering reveals the superconductivity competes with the BHV *** theoretical calculations suggest that this ordering originates from a synergistic effect of the vacancy formation energy and Fermi surface nesting with a wave vector of(1/3,1/3,0).The buckled structure breaks the crystal inversion symmetry and can mostly suppress the density of states near the Fermi *** peculiarities of BHV ordering highlight the importance of"correlated vacancies"and may serve as a paradigm for exploring other non-trivial excitations and quantum criticality.

关键词： Superconductivity Vacancies Iridates Phase diagram

自晶种方法宏量制备PS-b-PLLA单晶、复合单晶及其热力学稳定性

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高分子学报 2014年第7期24卷 896-907页

作者：马存贵姜春波黄海瑛张发军何天白中国科学院长春应用化学研究所高分子物理与化学国家重点实验室长春130022 中国科学院大学北京100049 institut fur Angewandte physik Universitat TubingenAuf der Morgenstelle 1072076 TubingenGermany

为了更好控制结晶的形态、大小以及产率,系统地研究了各种控制因素对自晶种方法制备PS-bPLLA嵌段共聚物单晶及复合单晶的影响,并考察了晶体在溶液和本体状态的热力学稳定性.通过调控成核温度(Ts)、成核时间(ts)和结晶温度(Tc)等参数,成... 详细信息

为了更好控制结晶的形态、大小以及产率,系统地研究了各种控制因素对自晶种方法制备PS-bPLLA嵌段共聚物单晶及复合单晶的影响,并考察了晶体在溶液和本体状态的热力学稳定性.通过调控成核温度(Ts)、成核时间(ts)和结晶温度(Tc)等参数,成功制备了不同尺寸、形状和厚度的单晶.随着Ts和ts的增加,晶体尺寸增加并且尺寸分布变窄.随着Tc的增加,单晶形状由菱形转变为截顶菱形.同时还利用两步法分别制备和表征了PS-b-PLLA/PLLA复合单晶.DSC热扫描实验表明,溶液生长的片状晶体在本体状态下处在热力学亚稳态,在升温熔融过程中出现明显的重结晶现象.但是晶体在不同温度下退火并不能增强其稳定性,从而证明了PLLA片晶厚度不能通过分子链在晶体内沿着链轴方向滑移而增厚.

关键词：自晶种单晶复合单晶热稳定性 DSC

血管造影及经皮经腔血管成形术(PTA)的工作人员射线照射量

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放射学实践 1993年第2期8卷 83-87页

作者： L.Bogner H.Czempiel H.Gfirtner H.Gohlke H.-J.Lssl W.Maier M.Schtzl Th.Schmidt M.Wucherer 张在沛 Stadtisches Krankenhaus Schwabing Institut fur Medizinische Physik und StrahlenschutzKolner Platz 18000 Munchen 81 Klinikum Passau Medizinische physik Bischof-Pilgrim-Str. 18390 Passau Elisabeth-Krankenhaus GmbH Radiologische Abteilung Medizinische physik und Strahlenschutz Schulgasse 208440 Straubing Arztliche Stelle bei der Bayerischen Landesarztekammer Elsenheimerstr.378000 Munchen 21 Zentralklinikum Augsburg Radiologisches Zentrum 8900 Augsburg 1 Klinikum Groβhadern der Ludwig-maximilians-Universitat Munchen Klinik und Poliklinik fur Radiologie Marchioninistr. 158000 Munchen 70 Radiologlsches Zentrum der Stadt Narnberg.Abteilung fur Medizinische physik.Flurstr.17.8500 Nurnberg 1 宜昌医学专科学校

从事诊断工作的人员职业性射线照射必须引起我们注意,以便采取一切必要的防护措施。若采取相应的预防措施,照射就不会超过临界剂量。

关键词：血管造影血管成形放射损伤医生

Exceptional points of any order in a single, lossy waveguide beam splitter by photon-numberresolved detection

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Photonics Research 2019年第8期7卷 862-867页

作者： MARIO AQUIROZ-JUAREZ ARMANDO PEREZ-LEIJA KONRAD TSCHERNIG BLAS MRODRIGUEZ-LARA OMAR SMAGANA-LOAIZA KURT BUSCH YOGESH NJOGLEKAR ROBERTO DE JLEON-MONTIEL instituto de Ciencias Nucleares Universidad Nacional Autonoma de MexicoApartado Postal70-54304510Cd.Mx.Mexico max-Born-institut Max-Born-StraBe2A12489BerlinGermany Humboldt-Universitat zu Berlin Institut fur PhysikAG Theoretische Optik & PhotonikD-12489BerlinGermany Tecnologico de Monterrey Escuela de Ingenieria y CienciasAve.Eugenio Garza Sada250164849MonterreyN.L.Mexico instituto Nacional de Astrofisica optica y ElectronicaCalle Luis Enrique Erro No.1Sta.Ma.TonantzintlaPue.CP72840Mexico Department of Physics and Astronomy Louisiana State UniversityBaton RougeLouisiana70803USA Department of Physics Indiana University Purdue University Indianapolis(IUPUI)IndianapolisIndiana46202USA

Exceptional points(EPs) are degeneracies of non-Hermitian operators where, in addition to the eigenvalues, the corresponding eigenmodes become degenerate. Classical and quantum photonic systems with EPs have attracted tremendous attention due to their unusual properties, topological features, and an enhanced sensitivity that depends on the order of the EP, i.e., the number of degenerate eigenmodes. Yet, experimentally engineering higher-order EPs in classical or quantum domains remain an open challenge due to the stringent symmetry constraints that are required for the coalescence of multiple eigenmodes. Here, we analytically show that the number-resolved dynamics of a single, lossy waveguide beam splitter, excited by N indistinguishable photons and post-selected to the N-photon subspace, will exhibit an EP of order N+1. By using the well-established mapping between a beam splitter Hamiltonian and the perfect state transfer model in the photon-number space,we analytically obtain the time evolution of a general N-photon state and numerically simulate the system’s evolution in the post-selected manifold. Our results pave the way toward realizing robust, arbitrary-order EPs on demand in a single device.

关键词： EP Exceptional points photon-numberresolved detection

Field-level characterization of strrong coupling between excitons and surface plasmon polaritons in J-aggregate/metal hybrid nanostructures

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光电工程 2017年第2期44卷 242-242页

作者： Wei Wang Ephraim Sommer Antonietta De Sio Parin ch Vasa Juemin Yi Hong Zhang Colledge of Physical Science and Technology Sichuan University Chengdu 610064 China institut fur physik Carl yon Ossietzky Universitat Oldenburg 26111 Germany Department of Physics Indian Institute of Technology Bombay 400076 India Key Laboratory of High Energy Density Physics and Technology of Ministry of Education Sichuan University Chengdu 610065 China