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Colloidal systems observed in video microscopy are often analysed using the displacements correlation matrix of particle positions. In non-thermal systems, the inverse of this matrix can be interpreted as a pair-interaction potential…

软凝聚态物质 · 物理学 2016-02-03 Michael Schindler , A. C. Maggs

The two-body interaction in dilute solutions of polymer chains in good solvents can be modeled by means of effective bounded potentials, the simplest of which being that of penetrable spheres (PSs). In this paper we construct two simple…

软凝聚态物质 · 物理学 2007-08-19 Alexandr Malijevsky , Santos B. Yuste , Andres Santos

We consider three different continuum polymer models, that all depend on a tunable parameter r that determines the strength of the excluded-volume interactions. In the first model chains are obtained by concatenating hard spherocylinders of…

软凝聚态物质 · 物理学 2017-10-25 Giuseppe D'Adamo , Andrea Pelissetto

The cluster-in-molecule (CIM) local correlation approach with an accurate distant pair correlation energy correction is presented. For large systems, the inclusion of distant pair correlation energies is essential for the accurate…

化学物理 · 物理学 2020-08-06 Zhigang Ni , Yang Guo , Frank Neese , Wei Li , Shuhua Li

The massive field theory approach in fixed space dimensions $d=3$ is applied to investigate a dilute solution of long-flexible polymer chains in a good solvent between two parallel repulsive walls, two inert walls and for the mixed case of…

软凝聚态物质 · 物理学 2009-10-08 D. Romeis , Z. Usatenko

We study the correlations of classical hardcore dimer models doped with monomers by Monte Carlo simulation. We introduce an efficient cluster algorithm, which is applicable in any dimension, for different lattices and arbitrary doping. We…

强关联电子 · 物理学 2016-08-31 Werner Krauth , R. Moessner

The pair-correlation functions for fluid ionic mixtures in arbitrary spatial dimensions are computed in hypernetted chain (HNC) approximation. In the primitive model, all ions are approximated as non-overlapping hyperspheres with Coulomb…

软凝聚态物质 · 物理学 2014-03-28 Marco Heinen , Elshad Allahyarov , Hartmut Löwen

We have evaluated conformational and orientational averages of binary interaction integrals for pairs of chains constituting atomistic representations of short polymer molecules. By considering A-A, B-B and A-B pairs, we relate these…

化学物理 · 物理学 2009-05-29 Amirhossein Ahmadi , Juan J. Freire

The surface tension of interacting polymers in a good solvent is calculated theoretically and by computer simulations for a planar wall geometry and for the insertion of a single colloidal hard-sphere. This is achieved for the planar wall…

软凝聚态物质 · 物理学 2016-08-31 A. A. Louis , P. G. Bolhuis , E. J. Meijer , J. P. Hansen

The Langevin Equation for cooperative dynamics represents the dynamics of polymer melts with chains of increasing degree of polymerization, covering the full range of behavior from the unentangled to the entangled regime. This equation…

软凝聚态物质 · 物理学 2015-09-30 M. G. Guenza

We utilize an effective field theory approach to calculate Casimir interactions between objects bound to thermally fluctuating fluid surfaces or interfaces. This approach circumvents the complicated constraints imposed by such objects on…

软凝聚态物质 · 物理学 2015-05-19 Cem Yolcu , Ira Z. Rothstein , Markus Deserno

The determination of the pair potential $v({\bf r})$ that accurately yields an equilibrium state at positive temperature $T$ with a prescribed pair correlation function $g_2({\bf r})$ or corresponding structure factor $S({\bf k})$ in…

软凝聚态物质 · 物理学 2022-09-23 Salvatore Torquato , Haina Wang

Thermal density functional theory calculations often use the Mermin-Kohn-Sham scheme, but employ ground-state approximations to the exchange-correlation (XC) free energy. In the simplest solvable nontrivial model, an asymmetric Hubbard…

强关联电子 · 物理学 2016-06-29 Justin C Smith , Aurora Pribram-Jones , Kieron Burke

We present results of Monte Carlo study of the monomer-monomer correlation functions, static structure factor and asphericity characteristics of a single homopolymer in the coil and globular states for three distinct architectures of the…

软凝聚态物质 · 物理学 2009-11-07 Edward G. Timoshenko , Yuri A. Kuznetsov , Ronan Connolly

We analyze structural and conformational properties in a simulated bead-spring model of a non-entangled, supercooled polymer melt. We explore the statics of the model via various structure factors, involving not only the monomers, but also…

软凝聚态物质 · 物理学 2009-11-10 Martin Aichele , Song-Ho Chong , Jörg Baschnagel , Matthias Fuchs

The paper presents a short overview of the theoretical, numerical and experimental works on the critical behavior of a dilute polymer solution of long-flexible polymer chains confined in semi-infinite space restricted by a surface or in a…

软凝聚态物质 · 物理学 2018-01-08 Zoryana Usatenko , Krzysztof S. Danel

Hybrid molecular dynamics/Monte Carlo simulations used to study melts of unentangled, thermoreversibly associating supramolecular polymers. In this first of a series of papers, we describe and validate a model that is effective in…

软凝聚态物质 · 物理学 2015-05-13 Robert S. Hoy , Glenn H. Fredrickson

We compare a few types of high energy reactions which seem to be practical for polarimetry at RHIC. Coulomb-nuclear interference (CNI) in pp elastic scattering leads to a nearly energy-independent left-right asymmetry A_N(t) at small t. The…

高能物理 - 唯象学 · 物理学 2007-05-23 Boris Kopeliovich

The recently proposed pair-interaction model is applied to study a series of refractory high entropy alloys. The results demonstrate the simplicity, robustness, and high accuracy of this model in predicting the configuration energies of…

材料科学 · 物理学 2019-07-25 Xianglin Liu , Jiaxin Zhang , Sirui Bi , Yang Wang , G. Malcolm Stocks , Markus Eisenbach

We present a detailed study of the static and dynamic behavior of long semiflexible polymer chains in a melt. Starting from previously obtained fully equilibrated high molecular weight polymer melts [{\it Zhang et al.} ACS Macro Lett. 3,…

软凝聚态物质 · 物理学 2016-05-25 Hsiao-Ping Hsu , Kurt Kremer