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      Simulation of 3D Crystallization of Colloidal Nanoparticles on a Substrate during Drying

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      1 , , , 1
      International Polymer Processing
      Carl Hanser Verlag

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          Abstract

          This paper presents a simulation of 3D crystallization of colloidal nanoparticles on a substrate during drying. The translational motion and the rotational motion of nanoparticles are modeled by Langevin equation and the law of angular momentum conservation, respectively. Contact force, capillary force, Brownian force, van der Waals force, electrostatic force and fluid drag force are taken into consideration. The drying of colloid is expressed as a decrease of the colloid thickness with time. The drying process of a water solution of polystyrene nanoparticles on a flat substrate is investigated, so that a self-ordered 3D crystal of polystyrene nanoparticles is formed after drying. The crystallization is visualized with time, and vertical and planar structures of nanoparticles are evaluated temporally and quantitatively. The result indicates the primary mechanism of 3D crystallization of colloidal nanoparticles during drying, in which both layering in the vertical direction and planar crystallization take place at the same time.

          Most cited references22

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          Brownian dynamics with hydrodynamic interactions

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            Monodispersed Colloidal Spheres: Old Materials with New Applications

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              Lagrangian numerical simulation of plug flow of cohesionless particles in a horizontal pipe

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                Author and article information

                Journal
                ipp
                International Polymer Processing
                Carl Hanser Verlag
                0930-777X
                2195-8602
                2007
                : 22
                : 1
                : 16-21
                Affiliations
                1 Department of Chemical System Engineering, School of Engineering, The University of Tokyo, Tokyo, Japan
                Author notes
                Mail address: M. Fujita, Department of Chemical System Engineering, School of Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656, Japan. E-mail: masahiro@ 123456chemsys.t.u-tokyo.ac.jp
                Article
                IPP0988
                10.3139/217.0988
                f9708219-02eb-4df7-9896-350093eb5a20
                © 2007, Carl Hanser Verlag, Munich
                History
                : 6 May 2006
                : 10 October 2006
                Page count
                References: 23, Pages: 6
                Categories
                Invited Papers

                Polymer science,Materials technology,Materials characterization,General engineering,Polymer chemistry

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