Bulletin of the American Physical Society
APS March Meeting 2018
Monday–Friday, March 5–9, 2018; Los Angeles, California
Session Y53: Liquid Crystals
11:15 AM–2:03 PM,
Friday, March 9, 2018
LACC Room: 513
Sponsoring Units: GSOFT DBIO DPOLY
Chair: Doug Cleaver, Sheffield Hallam University
Abstract: Y53.00005 : Dielectric Controlled Self-assembly in Binary Colloidal Mixtures
12:03 PM–12:15 PM
Electrostatic interactions play a key role in many self-assembly processes, including colloidal aggregation. Prior simulation work has reported a rich variety of aggregates formed in simple binary suspensions of oppositely charged spherical colloids. However, dielectric effects, which are complicated to compute due to their many-body nature, are generally ignored in these studies. By employing a novel efficient method to handle the polarization charges via a combination of the method of images and the method of moments, we are able to examine the role of polarization in colloidal aggregation and crystallization in large-scale simulations. We systematically vary size ratio and relative permittivity, and determine the phase diagram, showing that dielectric effects qualitatively alter self-assembled structures.
The American Physical Society (APS) is a non-profit membership organization working to advance the knowledge of physics.
1 Physics Ellipse, College Park, MD 20740-3844
Editorial Office 1 Research Road, Ridge, NY 11961-2701 (631) 591-4000
Office of Public Affairs 529 14th St NW, Suite 1050, Washington, D.C. 20045-2001 (202) 662-8700