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Confined in two dimensional planes, polymer chains comprising dense monolayer solution are segregated from each other due to topological interaction. Although the segregation is inherent in two dimensions (2D), the solution may display…

软凝聚态物质 · 物理学 2022-09-26 Lei Liu , Changbong Hyeon

The critical behavior of the contact process in disordered and periodic binary 2d-lattices is investigated numerically by means of Monte Carlo simulations as well as via an analytical approximation and standard mean field theory.…

统计力学 · 物理学 2009-11-13 S. V. Fallert , Y. M. Kim , C. J. Neugebauer , S. N. Taraskin

Single domain proteins are thought to be tightly packed. The introduction of voids by mutations is often regarded as destabilizing. In this study we show that packing density for single domain proteins decreases with chain length. We find…

软凝聚态物质 · 物理学 2009-11-10 Jinfeng Zhang , Rong Chen , Chao Tang , Jie Liang

The influence of confinement, due to flat parallel structureless walls, on phase separation in colloid-polymer mixtures, is investigated by means of grand-canonical Monte Carlo simulations. Ultra-thin films, with thicknesses between…

软凝聚态物质 · 物理学 2009-11-11 Richard L. C. Vink , Andres De Virgiliis , Juergen Horbach , Kurt Binder

We study the interplay of intrinsic-electronic and environmental factors on long-range charge transport across molecular chains with up to $N\sim 80$ monomers. We describe the molecular electronic structure of the chain with a tight-binding…

介观与纳米尺度物理 · 物理学 2022-09-21 Francisco Lai Liang , Dvira Segal

We calculate mean square deviations for crystals in one and two dimensions. For the two dimensional lattices, we consider several distinct geometries (i.e. square, triangular, and honeycomb), and we find the same essential phenomena for…

材料科学 · 物理学 2010-04-27 D. J. Priour

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

We introduce a framework for model reduction of chain models for dissipative particle dynamics (DPD) simulations, where the characteristic size of the chain, pressure, density, and temperature are preserved. The proposed methodology reduces…

软凝聚态物质 · 物理学 2016-05-04 Nicolas Moreno , Suzana P. Nunes , Victor M. Calo

We propose a two-body spherically symmetric (isotropic) potential such that particles interacting by the potential self assemble into linear semiflexible polymeric chains without branching. By suitable control of the potential parameters we…

软凝聚态物质 · 物理学 2018-05-09 Alex Abraham , Apratim Chatterji

The critical properties of renormalizable O(N) field models are determined by means of the high order ($\geq 18$) behaviour of convergent linked cluster series on finite temperature lattices. It is shown that those models become weakly…

高能物理 - 格点 · 物理学 2009-10-28 Thomas Reisz

We explore the critical behaviour of two and three dimensional lattice models of polymers in dilute solution where the monomers carry a magnetic moment which interacts ferromagnetically with near-neighbour monomers. Specifically, the model…

统计力学 · 物理学 2021-08-25 Damien Paul Foster , Debjyoti Majumdar

This study presents a computational investigation of self-assembly and rheological behaviour of multichain amphiphilic block copolymers under varying chain length, architecture, composition, and shear rate. Using Brownian dynamics (BD)…

软凝聚态物质 · 物理学 2026-04-14 Ehsan Kamali Ahangar , Dominic Robe , Elnaz Hajizadeh

The microphase separated morphology of a melt of a specific class of comb-coil diblock copolymers, consisting of an AB comb block and a linear homopolymer A block, is analyzed in the weak segregation limit. On increasing the length of the…

软凝聚态物质 · 物理学 2009-11-07 Rikkert J. Nap , Gerrit ten Brinke

Lattice model of directed self avoiding walk has been solved analytically to investigate adsorption desorption phase transition behaviour of a semiflexible sequential copolymer chain on a two dimensional impenetrable surface perpendicular…

统计力学 · 物理学 2010-02-23 Pramod Kumar Mishra

We study phase diagrams of a class of doped quantum dimer models on the square lattice with ground-state wave functions whose amplitudes have the form of the Gibbs weights of a classical doped dimer model. In this dimer model, parallel…

强关联电子 · 物理学 2007-10-25 Stefanos Papanikolaou , Erik Luijten , Eduardo Fradkin

The critical behavior of adsorbed monomers that reversibly polymerize into linear chains with restricted orientations relative to the substrate has been studied. In the model considered here, which is known as self-assembled rigid rods…

统计力学 · 物理学 2015-06-15 L. G. López , D. H. Linares , A. J. Ramirez-Pastor , D. A. Stariolo , S. A. Cannas

We have studied the thermodynamics of isolated homopolymer chains of varying stiffness using a lattice model. A complex phase behaviour is found; phases include chain-folded `crystalline' structures, the disordered globule and the coil. It…

软凝聚态物质 · 物理学 2008-02-03 Jonathan Doye , Richard Sear , Daan Frenkel

Chiral heteropolymers such as larger globular proteins can simultaneously support multiple length scales. The interplay between different scales brings about conformational diversity, and governs the structure of the energy landscape.…

软凝聚态物质 · 物理学 2018-05-16 Anna Sinelnikova , Antti J. Niemi , Johan Nilsson , Maksim Ulybyshev

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

We calculate the linear and non-linear susceptibilities of periodic longitudinal chains of hydrogen dimers with different bond-length alternations using a diffusion quantum Monte Carlo approach. These quantities are derived from the changes…

化学物理 · 物理学 2015-05-14 Paolo Umari , Nicola Marzari