Shape Selection in Chiral Self-Assembly

Details Shape Selection in Chiral Self-Assembly Shape Selection in Chiral Self-Assembly

2003-12-08

arxiv.org/abs/cond-mat/0312207v3

Phys. Rev. Lett. 93, 158103 (2004)

Physics

Condensed Matter

Soft Condensed Matter

4 pages, including 4 postscript figures, uses REVTeX 4

Scientific paper

10.1103/PhysRevLett.93.158103

Many biological and synthetic materials self-assemble into helical or twisted aggregates. The shape is determined by a complex interplay between elastic forces and the orientation and chirality of the constituent molecules. We study this interplay through Monte Carlo simulations, with an accelerated algorithm motivated by the growth of an aggregate out of solution. The simulations show that the curvature changes smoothly from cylindrical to saddle-like as the elastic moduli are varied. Remarkably, aggregates of either handedness form from molecules of a single handedness, depending on the molecular orientation.

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