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We consider how beads can diffuse along a chain that wraps them, without becoming displaced from the chain; our proposed mechanism is analogous to the reptation of "stored length" in more familiar situations of polymer dynamics. The problem…

软凝聚态物质 · 物理学 2009-11-07 H. Schiessel , J. Widom , R. F. Bruinsma , W. M. Gelbart

The assembly of colloidal cubic diamond is a challenging process since the shape and interaction parameters and the thermodynamic conditions where this structure is stable are elusive. The simultaneous use of shape-anisotropic particles and…

软凝聚态物质 · 物理学 2024-06-12 Susana Marín-Aguilar , Fabrizio Camerin , Marjolein Dijkstra

The intricate interplay between colloidal particle shape and precisely engineered interaction potentials has paved the way for the discovery of unprecedented crystal structures in both two and three dimensions. Here, we make use of…

软凝聚态物质 · 物理学 2023-11-27 Fabrizio Camerin , Susana Marín-Aguilar , Marjolein Dijkstra

Both boron nitride (BN) and carbon (C) have sp, sp2 and sp3 hybridization modes, and thus resulting in a variety of BN and C polymorphs with similar structures, such as hexagonal BN (hBN) and graphite, cubic BN (cBN) and diamond. Here, five…

材料科学 · 物理学 2022-03-03 Kun Luo , Baozhong Li , Lei Sun , Yingju Wu , Yanfeng Ge , Bing Liu , Julong He , Bo Xu , Zhisheng Zhao , Yongjun Tian

A two species interacting system motivated by the density functional theory for triblock copolymers contains long range interaction that affects the two species differently. In a two species periodic assembly of discs, the two species…

偏微分方程分析 · 数学 2019-02-27 Senping Luo , Xiaofeng Ren , Juncheng Wei

The formation of chain-folded structures from the melt is observed in molecular dynamics simulations resembling the lamellae of polymer crystals. Crystallization and subsequent melting temperatures are related linearly to the inverse…

软凝聚态物质 · 物理学 2009-10-31 Hendrik Meyer , Florian Mueller-Plathe

We demonstrate a variety of ordered patterns, including hexagonal structures and chains, formed by colloidal particles (droplets) at the free surface of a nematic liquid crystal (LC). The surface placement introduces a new type of particle…

软凝聚态物质 · 物理学 2009-11-10 I. I. Smalyukh , S. Chernyshuk , B. I. Lev , A. B. Nych , U. Ognysta , V. G. Nazarenko , O. D. Lavrentovich

The results obtained from molecular dynamics simulations of the friction at an interface between polymer melts and weakly attractive crystalline surfaces are reported. We consider a coarse-grained bead-spring model of linear chains with…

软凝聚态物质 · 物理学 2012-06-12 Nikolai V. Priezjev

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

In systems such as block copolymer mesophases or physical gels formed by associating copolymers, the dynamical properties are often controlled by the extraction/association of a sticking group. We propose a description of the…

软凝聚态物质 · 物理学 2009-09-25 J. P. Wittmer , A. Johner

A living cell is an active environment where the organization and dynamics of chromatin are affected by different forms of activity. Optical experiments report that loci show subdiffusive dynamics and the chromatin fiber is seen to be…

软凝聚态物质 · 物理学 2023-03-15 Subhasish Chaki , Ligesh Theeyancheri , Rajarshi Chakrabarti

Ratchet effects can appear for particles interacting with an asymmetric potential under ac driving or for a thermal system in which a substrate is periodically flashed. Here, we show that a new type of collective ratchet effect can arise…

软凝聚态物质 · 物理学 2025-07-16 C. Reichhardt , C. J. O. Reichhardt

We study self-assembly in suspensions of supracolloidal polymer-like structures made of crosslinked magnetic particles. Inspired by self-assembly motifs observed for dipolar hard spheres, we focus on four different topologies of the…

软凝聚态物质 · 物理学 2018-09-24 E. V. Novak , E. S. Pyanzina , D. A. Rozhkov , M. Ronti , J. J. Cerdà , T. Sintes , P. A. Sánchez , S. S. Kantorovich

The phase behavior of symmetric diblock copolymers under three-dimensional (3D) soft confinement is investigated using the self-consistent field theory. The soft confinement is realized in binary blends composed AB diblock copolymers and C…

软凝聚态物质 · 物理学 2024-08-28 Zhijuan He , Jin Huang , Kai Jiang , An-Chang Shi

Using data from contact maps of the DNA-polymer of $E. Coli$ (at kilobase pair resolution) as an input to our model, we introduce cross-links between monomers in a bead-spring model of a ring polymer at very specific points along the chain.…

软凝聚态物质 · 物理学 2018-01-17 Tejal Agarwal , G. P. Manjunath , Farhat Habib , Pavna Lakshmi , Apratim Chatterji

In simple colloidal suspensions, clusters are various multimers that result from colloid self-association and exist in equilibrium with monomers.There are two types of potentials that are known to produce clusters: a) potentials that result…

软凝聚态物质 · 物理学 2016-03-08 A. Baumketner , W. Cai

Solid materials possess both long-range order and some degree of disorder are critical for understanding the nature of crystal and glassy state, but how to controllable introduce specific type of disorder into a crystalline material is a…

材料科学 · 物理学 2023-06-19 Hongmei Qin , Jiahui Wang , Na Lin , Xiaoxu Sun , Yin Chen

Interactions between stacked two-dimensional (2D) atomic crystals can radically change their properties, leading to essentially new materials in terms of the electronic structure. Here we show that monolayers placed on an atomically flat…

We have explored the electronic properties of stacked graphene flakes with the help of the quantum chemistry methods. We found that the behavior of a bilayer system is governed by the strength of the repulsive interactions that arise…

介观与纳米尺度物理 · 物理学 2015-05-27 Julia Berashevich , Tapash Chakraborty

The role of the rigidity of a peptide chain in its equilibrium dynamics is investigated within a realistic model with stringent microscopically derived coupling interaction potential and effective on-site potential. The coupling interaction…

软凝聚态物质 · 物理学 2007-06-25 A. E. Sitnitsky