PMID: 15244594Jul 13, 2004Paper

Potential of mean force between a spherical particle suspended in a nematic liquid crystal and a substrate: sphere size effects

Physical Review. E, Statistical, Nonlinear, and Soft Matter Physics
Evelina B Kim, Juan J de Pablo

Abstract

The expanded ensemble density of states method (ExEDOS) is used to investigate the effective interaction of a spherical colloidal particle suspended in a confined liquid crystal (LC) with a substrate. The potential of mean force (PMF) is determined as a function of the normal distance between the particle and the substrate's surface. The presence of the substrate induces a layered structure of the LC, which in turn greatly influences the PMF. We analyze the structure of the Saturn ring defect that accompanies the colloidal sphere, and find that the ring is displaced slightly towards the surface when the sphere is within the first LC surface layer. A transition occurs from an overall attraction of the colloid to the substrate to a global repulsion when the sphere's radius is roughly twice the length of the LC molecules.

References

Mar 21, 1997·Science·P PoulinD A Weitz
Feb 1, 1995·Physical Review. E, Statistical Physics, Plasmas, Fluids, and Related Interdisciplinary Topics·E M Terentjev
Nov 23, 2000·Physical Review. E, Statistical Physics, Plasmas, Fluids, and Related Interdisciplinary Topics·J L Billeter, R A Pelcovits
Apr 20, 2001·Physical Review. E, Statistical, Nonlinear, and Soft Matter Physics·D AndrienkoM P Allen
May 15, 2002·Physical Review. E, Statistical, Nonlinear, and Soft Matter Physics·Denis AndrienkoSlobodan Zumer
Mar 15, 2003·Physical Review. E, Statistical, Nonlinear, and Soft Matter Physics·S GrollauJ J de Pablo
Dec 20, 2003·Physical Review. E, Statistical, Nonlinear, and Soft Matter Physics·D AndrienkoM M Telo da Gama
Mar 11, 2004·The European Physical Journal. E, Soft Matter·M TasinkevychM M Telo da Gama

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Citations

Nov 13, 2007·The Journal of Chemical Physics·Fernando A Escobedo, Francisco J Martínez-Veracoechea
Oct 19, 2010·The Journal of Chemical Physics·Derek A Triplett, Kristen A Fichthorn
May 24, 2013·The Journal of Chemical Physics·Jonathan K WhitmerJuan J de Pablo
Aug 4, 2015·The Journal of Chemical Physics·Jonathan K WhitmerJuan J de Pablo
Jul 21, 2004·The Journal of Chemical Physics·Evelina B KimJuan J de Pablo
Apr 12, 2006·Physical Review. E, Statistical, Nonlinear, and Soft Matter Physics·T G SokolovskaG N Patey

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