نتایج جستجو برای: colloidal particles

تعداد نتایج: 169710  

Journal: :Physical review letters 2000
Tanaka Araki

We develop a new simulation method of colloidal suspensions, which we call a "fluid particle dynamics" (FPD) method. This FPD method, which treats a colloid as a fluid particle, removes the difficulties stemming from a solid-fluid boundary condition in the treatment of hydrodynamic interactions between the particles. The importance of interparticle hydrodynamic interactions in the aggregation p...

Journal: :Journal of colloid and interface science 2000
Reese Guerrero Weissman Lee Asher

We have developed a series of emulsion polymerization recipes for the synthesis of highly charged, monodisperse polystyrene colloids of diameters between 100-400 nm. These spherical colloidal particles were crosslinked with divinyl benzene and functionalized with 1-allyloxy-2-hydroxypropane sulfonate. These highly charged, monodisperse colloidal particles readily self-assemble into robust three...

Journal: :Proceedings of the National Academy of Sciences of the United States of America 2011
Miha Ravnik Gareth P Alexander Julia M Yeomans Slobodan Žumer

Applications for photonic crystals and metamaterials put stringent requirements on the characteristics of advanced optical materials, demanding tunability, high Q factors, applicability in visible range, and large-scale self-assembly. Exploiting the interplay between structural and optical properties, colloidal lattices embedded in liquid crystals (LCs) are promising candidates for such materia...

Journal: :Computer Physics Communications 2015
Nam Mai-Duy Nhan Phan-Thien Boo Cheong Khoo

In the Dissipative Particle Dynamics (DPD) simulation of suspension, the fluid (solvent) and colloidal particles are replaced by a set of DPD particles and therefore their relative sizes (as measured by their exclusion zones) can affect the maximal packing fraction of the colloidal particles. In this study, we investigate roles of the conservative, dissipative and random forces in this relative...

Journal: :Physical review letters 2008
Sven van Teeffelen Christos N Likos Hartmut Löwen

We study the conditions under which and how an imposed cluster of fixed colloidal particles at prescribed positions triggers crystal nucleation from a metastable colloidal fluid. Dynamical density functional theory of freezing and Brownian dynamics simulations are applied to a two-dimensional colloidal system with dipolar interactions. The externally imposed nucleation clusters involve colloida...

Journal: :Europhysics Letters (EPL) 2005

Journal: :The Journal of Chemical Physics 2004

Journal: :Journal of Applied Physics 2022

Anisotropic colloidal particles are regularly found in applications ranging from health to energy. These particles, typically with non-uniform shape or surface chemistry, interact boundaries unique ways, offering pathways complex assemblies and active systems. Work this field over the past two decades rapidly advanced, last five years seeing significant innovation. One common thread joining man...

Journal: :Physical review letters 2007
M Ravnik M Skarabot S Zumer U Tkalec I Poberaj D Babic N Osterman I Musevic

It has been predicted, but never confirmed, that colloidal particles in a nematic liquid crystal could be self-assembled by delocalized topological defects and entangled disclinations. We show experimentally and theoretically that colloidal dimers and 1D structures bound by entangled topological defect loops can indeed be created by locally thermally quenching a thin layer of the nematic liquid...

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