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The thermal properties of coarse grained knotted polymers containing two kinds of monomers $A$ and $B$ fluctuating in a solution are investigated on a simple cubic lattice using the Wang-Landau MC algorithm. These knots have a more complex…

软凝聚态物质 · 物理学 2022-09-07 Neda Abbasi Taklimi , Franco Ferrari , Marcin Radosław Piątek , Luca Tubiana

Dendrites formation in the course of crystallization presents very general phenomenon, which is analyzed in details via the example of ice crystals growth in deionized water. Neutral molecules of water on the surface are combined into the…

大气与海洋物理 · 物理学 2009-11-13 Mark E. Perel'man , Galina M. Rubinstein , Vitali A. Tatartchenko

We perform simulations to compute the effective potential between the centers-of-mass of two polymers with reversible bonds. We investigate the influence of the topology of the unbonded precursor (linear or ring) and the specific sequence…

软凝聚态物质 · 物理学 2022-05-04 Mariarita Paciolla , Christos N. Likos , Angel J. Moreno

Polymer network models construct the constitutive relationships of a broader polymer network from the behavior of a single polymer chain (e.g. viscoelastic response to applied forces, applied electromagnetic fields, etc.). Network models…

软凝聚态物质 · 物理学 2024-12-31 Matthew Grasinger

We probe the mechanisms at work in the build-up of thermoreversible gel networks, with the help of hybrid gelatin gels containing a controlled density of irreversible, covalent crosslinks (CL), which we quench below the physical gelation…

软凝聚态物质 · 物理学 2015-06-24 H. Souguir , O. Ronsin , C. Caroli , T. Baumberger

Stellar shells are low surface brightness features, created during nearly head-on galaxy mergers from the debris of the tidally disrupted satellite. Here, we investigate the formation and evolution mechanism of shells in six dimensions (3d…

星系天体物理 · 物理学 2022-02-25 C. A. Dong-Páez , E. Vasiliev , N. W. Evans

Filamentary structures are ubiquitous in high-mass star-forming molecular clouds. Their relation with high-mass star formation is still to be understood. Here we report interferometric observations toward 8 filamentary high-mass…

We investigate the static and dynamic properties of dendrimers diffusing through a network of linear associative polymers using coarse-grained Brownian dynamics simulations. Both dendrimers and network chains are modelled as bead-spring…

软凝聚态物质 · 物理学 2025-11-26 Silpa Mariya , Jeremy J. Barr , P. Sunthar , J. Ravi Prakash

We consider a model mixture of hard colloidal spheres and non-adsorbing polymer chains in a theta solvent. The polymer component is modelled as a polydisperse mixture of effective spheres, mutually noninteracting but excluded from the…

软凝聚态物质 · 物理学 2009-11-10 A. R. Denton , M. Schmidt

We investigate the elastic energy stored in a filament pair as a function of applied twist by measuring torque under prescribed end-to-end separation conditions. We show that the torque increases rapidly to a peak with applied twist when…

软凝聚态物质 · 物理学 2024-03-12 Julien Chopin , Animesh Biswas , Arshad Kudrolli

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

Weakly attractive interactions between the tips of rod-like colloidal particles affect their liquid-crystal phase behaviour due to a subtle interplay between enthalpy and entropy. Here, we employ molecular dynamics simulations on…

软凝聚态物质 · 物理学 2019-10-16 Mariana Oshima Menegon , Guido L. A. Kusters , Paul van der Schoot

We provide experimental and numerical evidence of a new class of soft nanocolloids: star-like microgels with thermoresponsive character. This is achieved by using the standard precipitation polymerization synthesis of…

Living and engineered systems rely on the stable coexistence of two interspersed liquid phases. Yet surface tension drives their complete separation. Here we show that stable droplets of uniform and tuneable size can be produced through…

Polymer entanglements lead to complicated topological constraints and interactions between neighbouring chains in a dense solution or melt. Entanglements can be treated in a mean field approach, within the famous reptation model, since they…

软凝聚态物质 · 物理学 2007-05-23 S. Kutter , E. M. Terentjev

Diblock copolymers by virtue of the chemical dissimilarity between the constituting blocks exhibit microphase separation in the melt state. The phase separated melt can successfully be exploited to control the morphology of the final semi…

软凝聚态物质 · 物理学 2018-02-19 Chitrita Kundu , Nikhil S. Joshi , Ashok Kumar Dasmahapatra

By means of multicanonical computer simulations, we investigate thermodynamic properties of the aggregation of interacting semiflexible polymers. We analyze a mesoscopic bead-stick model, where nonbonded monomers interact via Lennard-Jones…

软凝聚态物质 · 物理学 2015-05-28 Christoph Junghans , Michael Bachmann , Wolfhard Janke

We study analytically the intricate phase behavior of cross-linked $AB$ diblock copolymer melts, which can undergo two main phase transitions due to quenched random constraints: Gelation, i.e., spatially random localization of polymers…

软凝聚态物质 · 物理学 2015-02-10 Alice von der Heydt , Annette Zippelius

We generalize a recently investigated lattice model of semiflexible polymers formed under equilibrium polymerization in a solution and conduct a comprehensive investigation of its melting properties. The model is characterized by six…

凝聚态物理 · 物理学 2007-05-23 Sagar S. Rane , P. D. Gujrati

Kinetic barriers cause polymers to crystallize incompletely, into nanoscale lamellae interleaved with amorphous regions. As a result, crystalline polymers are full of crystal-melt interfaces, which dominate their physical properties. The…

软凝聚态物质 · 物理学 2010-09-23 Scott T. Milner