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We report numerical investigations of a three-dimensional model of diffusive growth of fine particles, the internal structure of which corresponds to different crystal lattices. A growing cluster (particle) is immersed in, and exchanges…

统计力学 · 物理学 2010-10-12 Vyacheslav Gorshkov , Alexandr Zavalov , Vladimir Privman

A simple expression for the composition dependence of the Flory-Huggins interaction parameter of polymer/solvent systems reported earlier is used to model the demixing of polymer solutions into two liquid phases. To this end the system…

软凝聚态物质 · 物理学 2007-05-23 Sergej Stryuk , Bernhard A. Wolf

We report size-dependent melting of spherical copper nanoparticles embedded into silica matrix. Based on the temperature dependence of the surface plasmon resonance energy and its width we observe two distinct melting regimes. For particles…

材料科学 · 物理学 2007-05-23 Oleg A. Yeshchenko , Igor M. Dmytruk , Alexandr A. Alexeenko , Andriy M. Dmytruk

A Cahn-Hilliard-type theory for hydrodynamic fluctuations is proposed that gives a quantitative description of the slowly evolving spatial correlations and structures in density and flow fields in the early stages of evolution of freely…

统计力学 · 物理学 2009-10-31 T. P. C. van Noije , M. H. Ernst

We report the formation of stable nanoparticle-polymer clusters obtained by electrostatic complexation. The nanoparticles placed under scrutiny are nanoceria (CeO2) coated by short poly(acrylic acid) moieties, whereas the polymers are…

材料科学 · 物理学 2010-02-11 J. Fresnais , C. Lavelle , J. -F. Berret

We used the Coherent Grazing Incidence Small Angle X-Ray Scattering (Co-GISAXS) technique to study the average kinetics and nanoscale dynamics during early-stage a-WSi$_2$ sputter deposition. The kinetic and dynamic properties are examined…

Solvent exchange is a simple method to produce surface nanodroplets on a substrate for a wide range of applications by displacing a solution of good solvent, poor solvent and oil (Solution A) by a poor solvent (Solution B). In this work, we…

软凝聚态物质 · 物理学 2020-05-19 Jia Meng , Jae Bem You , Xuehua Zhang

It is shown that at a description of a binary solution, in the presence of a liquid phase of variable composition and a stoichiometric solid phase, the concept of chemical potential can be introduced for stoichiometry, which qualitatively…

统计力学 · 物理学 2020-07-07 V. G. Lebedev , A. A. Lebedeva , M. G. Vasin

Liquid phase exfoliation is a commonly used method to produce 2D nanosheets from a range of layered crystals. However, such nanosheets display broad size and thickness distributions and correlations between area and thickness, issues that…

Achieving optimal solubility of active substances in polymeric carriers is of fundamental importance for a number of industrial applications, including targeted drug delivery within the growing field of nanomedicine. However, its…

An efficient technique to simulate turbulent particle-laden flow at high mass loadings within the four-way coupled simulation regime is presented. The technique implements large eddy simulation, discrete phase simulation, a deterministic…

流体动力学 · 物理学 2017-09-13 Derrick O. Njobuenwu , Michael Fairweather

Direct numerical simulations of turbulent suspension flows are carried out with the Force-Coupling Method in plane Couette and pressure-driven channel configurations. Dilute to moderately concentrated suspensions of neutrally buoyant…

流体动力学 · 物理学 2018-08-15 Guiquan Wang , Micheline Abbas , Eric Climent

Sought-after ordered structures of mixtures of hard anisotropic nanoparticles can often be thermodynamically unfavorable due to the components' geometric incompatibility to densely pack into regular lattices. A simple compatibilization rule…

软凝聚态物质 · 物理学 2014-10-22 Mihir R. Khadilkar , Fernando A. Escobedo

In this work we studied the influence of particle size and agglomeration in the performance of solid oxide fuel cell cathodes made with nanoparticles of La0.8Sr0.2MnO3. We followed two synthesis routes based on the Liquid Mix method. In…

材料科学 · 物理学 2018-07-12 Hernán Martinelli , Diego G. Lamas , Ana G. Leyva , Joaquín Sacanell

We introduce a set of statistical measures that can be used to quantify non-equilibrium surface growth. They are used to deduce new information about spatiotemporal dynamics of model systems for spinodal decomposition and surface…

统计力学 · 物理学 2009-11-10 Girish Nathan , Gemunu Gunaratne

This report presents a systematic understanding of the nature behind the unusual behavior of a nanosolid, and a surface as well, in mechanics, thermodynamics, acoustics, optoelectronics, magnetism, dielectrics, atomic diffusivity and…

材料科学 · 物理学 2007-05-23 Chang Q Sun

In this paper, we mainly study the large time behavior to a 2D micro-macro model for compressible polymeric fluids with small initial data. This model is a coupling of isentropic compressible Navier-Stokes equations with a nonlinear…

偏微分方程分析 · 数学 2023-03-30 Wenjie Deng , Wei Luo , Zhaoyang Yin

MOF/polymer composites have been widely investigated in the past decade for gas separation applications. However, the impact of MOF nanoparticle morphology and size in gas separation have not yet been systematically studied by computer…

化学物理 · 物理学 2025-08-07 Cecilia M. S. Alvares , Rocio Semino

The resonant modes observed in semiconductor nanoparticles and the coherence interaction between them, producing directional light scattering, may be very interesting for CMOS integrated all-optical devices. In these systems the control…

The Cahn-Hilliard model with reaction terms can lead to situations in which no coarsening is taking place and, in contrast, growth and division of droplets occur which all do not grow larger than a certain size. This phenomenon has been…

偏微分方程分析 · 数学 2025-11-07 Harald Garcke , Kei Fong Lam , Robert Nürnberg , Andrea Signori