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The coupled dynamics of entangled polymers which span a broad time and length scales govern the unique viscoelastic properties of polymers. To follow chain mobility by numerical simulations from the intermediate Rouse and reptation regimes…

软凝聚态物质 · 物理学 2016-11-03 Gary S. Grest

We study the first passage time for a polymer, that we call the narrow encounter time (NETP), to reach a small target located on the surface of a microdomain. The polymer is modeled as a Freely Joint Chain (beads connected by springs with a…

软凝聚态物质 · 物理学 2015-06-12 A. Amitai , Carlo Amoruso , Avi Ziskind , D. Holcman

We consider the translocation of a one-dimensional polymer through a pore channel helped by a motor driven by a dichotomous noise with time exponential correlation. We are interested in the study of the translocation time, mean velocity and…

软凝聚态物质 · 物理学 2012-03-01 Alessandro Fiasconaro , Juan José Mazo , Fernando Falo

We investigate the effect of polydispersity on fluctuation-induced interactions between colloids trapped at a fluid interface. Using the scattering-matrix formalism, we calculate the interaction energy in two- and three-body systems under…

软凝聚态物质 · 物理学 2025-12-12 Seyed Emad Mousavi , Ehsan Noruzifar

The ability of metallic nanoparticles to supply heat to a liquid environment under exposure to an external optical field has attracted growing interest for biomedical applications. Controlling the thermal transport properties at a…

化学物理 · 物理学 2017-08-14 Shenghong Ju , Bruno Palpant , Yann Chalopin

We examine nonequilibrium features of collapse behavior in model polymers with competing crystallization and glass transitions using extensive molecular dynamics simulations. By comparing to "colloidal" systems with no covalent bonds but…

软凝聚态物质 · 物理学 2015-03-19 Robert S. Hoy , Corey S. O'Hern

In this letter we propose a model that demonstrates the effect of free surface on the lattice resistance experienced by a moving dislocation in nanodimensional systems. This effect manifests in an enhanced velocity of dislocation due to the…

材料科学 · 物理学 2008-09-13 A. Dutta , M. Bhattacharya , P. Barat , P. Mukherjee , N. Gayathri , G. C. Das

Letting free polymers diffuse from solution into a crosslinked polymer gel is often a crucial processing step in the synthesis of multiphase polymer-based gels, e.g., core-shell microgels. Here we use coarse-grained molecular dynamics…

软凝聚态物质 · 物理学 2024-12-17 Jude Ann Vishnu , Torsten Gereon Linder , Sebastian Seiffert , Friederike Schmid

We report a numerical study of the diffusiophoresis of short polymers using non-equilibrium molecular dynamics simulations. More precisely, we consider polymer chains in a fluid containing a solute which has a concentration gradient, and…

软凝聚态物质 · 物理学 2020-05-20 Simón Ramírez-Hinestrosa , Hiroaki Yoshida , Lydéric Bocquet , Daan Frenkel

The dynamics of polypropylene glycol, both neat and attached to silica nanoparticles, were investigated using elastic neutron backscattering and dielectric spectroscopy. The mean square displacement measured by the former is suppressed by…

软凝聚态物质 · 物理学 2017-05-03 M. Tyagi , R. Casalini , C. M. Roland

Dynamics of a polymer chain in solution gets significantly affected by the temperature and the frictional forces arising due to solvent viscosity. Here, using an explicit solvent framework for polymer simulation with the liberty to tune the…

软凝聚态物质 · 物理学 2024-09-11 Suman Majumder , Henrik Christiansen , Wolfhard Janke

Predicting the exact many-body quantum dynamics of polarons in materials with strong carrier-phonon interactions presents a fundamental challenge, often necessitating one to adopt approximations that sacrifice the ability to predict the…

化学物理 · 物理学 2024-11-27 Srijan Bhattacharyya , Thomas Sayer , Andrés Montoya-Castillo

Liquid transport through nanopore is central into many applications, from water purification to biosensing or energy harvesting. Ultimately thin nanopores are of major interest in these applications to increase driving potential and reduce…

流体动力学 · 物理学 2020-10-05 Olivier Liot , Catherine Sempere , Christophe Ybert , Anne-Laure Biance

We report extensive simulations of the relaxation dynamics of a self-avoiding polymer confined inside a cylindrical pore. In particular, we concentrate on examining how confinement influences the scaling behavior of the global relaxation…

软凝聚态物质 · 物理学 2009-11-13 A. Arnold , B. Bozorgui , D. Frenkel , B. -Y. Ha , S. Jun

We investigated the translation of a protein through model nanopores using coarse-grained (CG) non-equilibrium molecular dynamics (NEMD) simulations and compared the mobilities with those obtained from previous coarse-grained equilibrium…

We use molecular dynamics simulation to study the relationship between structure and dynamics in supercooled binary Lennard--Jones nanoparticles over a range of particle sizes. The glass transition temperature of the nanoparticles is found…

软凝聚态物质 · 物理学 2025-05-15 Weikai Qi , Shreya Tiwary , Richard K. Bowles

We study unbiased translocation of a flexible polymer chain through a membrane pore under the influence of active noise and steric exclusion using Langevin dynamics simulations. The active noise is incorporated by introducing nonchiral and…

软凝聚态物质 · 物理学 2022-07-19 Zahra Fazli , Ali Naji

We investigate the effect of the size of nanoparticles on the behaviour of equilibrium polymers (Wormlike micelles) and nanoparticle system. The self-organised structures of nanoparticles in the system show a morphological change from…

软凝聚态物质 · 物理学 2018-06-08 Sk. Mubeena

Polymer solutions subject to pressure driven flow and in nanoscale slit pores are systematically investigated using the dissipative particle dynamics approach. We investigated the effect of molecular weight, polymer concentration and flow…

软凝聚态物质 · 物理学 2015-06-25 J. A. Millan , W. Jiang , M. Laradji , Y. Wang

Starting from the reported experimental evidence that the residence time of contacts between the ends of biopolymers is length dependent, we investigate the kinetics of contact breaking in simple polymer models from a theoretical point of…

软凝聚态物质 · 物理学 2024-12-19 E. Marchi , G. Tiana