Sat, 19 Jul 2008 03:11:23 BST CiteULike: dchen's Araki http://www.citeulike.org/user/dchen/author/Araki CiteULike.org en-gb Copyright © 2004-2008 citeulike.org http://www.citeulike.org/user/dchen/article/2791741 <i>Physical Review Letters, Vol. 97, No. 12. (2006)</i><br /><br />We numerically study many-body interactions among colloidal particles suspended in a nematic liquid crystal, using a fluid particle dynamics method, which properly incorporates dynamical coupling among particles, nematic orientation, and flow field. Based on simulation results, we propose a new type of interparticle interaction in addition to well-known quadrupolar interaction for particles accompanying Saturn-ring defects. This interaction is mediated by the defect of the nematic phase: upon nematic ordering, a closed disclination loop binds more than two particles to form a sheetlike dynamically arrested structure. The interaction depends upon the topology of a disclination loop binding particles, which is determined by aggregation history. Colloidal Aggregation in a Nematic Liquid Crystal: Topological Arrest of Particles by a Single-Stroke Disclination Line Takeaki Araki Hajime Tanaka doi:10.1103/PhysRevLett.97.127801 Physical Review Letters, Vol. 97, No. 12. (2006) 2008-05-13T00:24:02-00:00 2006 Physical Review Letters 97 12 APS 2006 colloids defect interaction liquidcrystal simulation tanaka