Phys. Rev. E 72, 031301 (2005) [4 pages]

Polymerization transitions in two-dimensional systems of dipolar spheres

Abstract

References

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Justin Stambaugh¹, Kevin Van Workum², Jack F. Douglas^2,*, and Wolfgang Losert^1,†
¹Department of Physics, IPST, and IREAP, University of Maryland, College Park, Maryland 20742, USA
²Polymers Division, National Institute of Standards and Technology, Gaithersburg, Maryland 20899, USA

Received 24 February 2005; published 15 September 2005

We investigate the self-organization of dipolar spheres into polymer chains as a fundamental model of the self-assembly of particles having anisotropic interparticle interactions. Our study involves a combination of modeling with vertically vibrated magnetic beads simulating a quasi-two-dimensional fluid at equilibrium and corresponding Monte Carlo simulations of hard spheres with embedded extended dipoles. We find a transition from a gas-like phase to a polymerized phase upon cooling, in accord with the analytic theory of equilibrium polymerization.

URL:

http://link.aps.org/doi/10.1103/PhysRevE.72.031301

DOI:

10.1103/PhysRevE.72.031301

PACS:

45.70.−n, 05.70.Fh, 61.20.Qg, 82.35.−x

^*Electronic address: jack.douglas@nist.gov

^†Electronic address: wlosert@glue.umd.edu

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Phys. Rev. E 72, 031301 (2005) [4 pages]

Polymerization transitions in two-dimensional systems of dipolar spheres