Bulletin of the American Physical Society
APS March Meeting 2012
Volume 57, Number 1
Monday–Friday, February 27–March 2 2012; Boston, Massachusetts
Session T47: Focus Session: Heterogeneous Colloids I
2:30 PM–5:30 PM,
Wednesday, February 29, 2012
Sponsoring Unit: DPOLY
Chair: Michael Engel, University of Michigan
Abstract ID: BAPS.2012.MAR.T47.1
Abstract: T47.00001 : Janus and Multiblock Colloids*
2:30 PM–3:06 PM
Preview Abstract Abstract
(University of Illinois)
This talk surveys emerging areas opened up by the directional interactions presented by the specially-designed spheres known as Janus. The ``diblock'' motif, mutually attractive on one domain and repulsive on another, makes this a prototypical system for elucidating, on a mechanistic level, how concepts of chemical reaction kinetics explain the development of stable and highly ordered nonequilibrium structures. With the ``triblock'' motif, spheres that attract one another on two polar regions but repel at the middle band, we go beyond this to demonstrate the self-assembly of a useful low-density lattice of spheres, the colloidal Kagome lattice, and visualize its aqueous assembly dynamics on the single-particle level. A newer area of opportunity is ``dynamic self-assembly,'' in which energy fed into the system as a control variable generates big surprises. The generalization of these design rules will be discussed.
*Work performed with Erik Luijten, Qian Chen, Jing Yan, Nobuhiro Yanai, Jie Zhang, Jonathan K. Whitmer, and Sung Chul Bae.
To cite this abstract, use the following reference: http://meetings.aps.org/link/BAPS.2012.MAR.T47.1
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