Condensed Matter Theory

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Multispin Ising spin glasses with ferromagnetic interactions

JOURNAL OF PHYSICS A-MATHEMATICAL AND GENERAL 34:14 (2001) 2949-2964

Authors:

P Gillin, H Nishimori, D Sherrington
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Oscillating sign of drag in high Landau levels

PHYSICAL REVIEW LETTERS 87:10 (2001) ARTN 106803

Authors:

F von Oppen, SH Simon, A Stern
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Phase ordering in nematic liquid crystals

PHYSICAL REVIEW E 64:2 (2001) ARTN 021701

Authors:

C Denniston, E Orlandini, JM Yeomans
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Simulations of liquid crystal hydrodynamics.

ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY 222 (2001) U380-U380

Authors:

C Denniston, E Orlandini, G Toth, JM Yeomans
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Simulations of liquid crystals in Poiseuille flow

COMPUT THEOR POLYM S 11:5 (2001) 389-395

Authors:

C Denniston, E Orlandini, JM Yeomans

Abstract:

Lattice Boltzmann simulations are used to explore the behavior of liquid crystals subject to Poiseuille flow. In the nematic regime at low shear rates we find two possible steady-state configurations of the director field. The selected state depends on both the shear rate and the history of the sample. For both director configurations there is clear evidence of shear thinning, a decrease in the viscosity with increasing shear rate. Moreover, at very high shear rates or when the order parameter is large, the system transforms to a 'log-rolling state' with boundary layers that may exhibit oscillatory behavior. (C) 2001 Elsevier Science Ltd. All rights reserved.
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