Condensed Matter Theory

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Representability problems for coarse-grained water potentials

JOURNAL OF CHEMICAL PHYSICS 126:14 (2007) ARTN 144509

Authors:

Margaret E Johnson, Teresa Head-Gordon, Ard A Louis
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Spin Glasses: A Perspective

SPIN GLASSES 1900 (2007) 45-62
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Steady-state hydrodynamic instabilities of active liquid crystals: Hybrid lattice Boltzmann simulations

PHYSICAL REVIEW E 76:3 (2007) ARTN 031921

Authors:

D Marenduzzo, E Orlandini, ME Cates, JM Yeomans
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The relationship between bulk water and protein dynamical transitions

ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY 234 (2007)

Authors:

Teresa Head-Gordon, Margaret E Johnson, Cecile Malardier-Jugroot, Ard A Louis, Rajesh K Murarka
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Viscoelastic flows of cholesteric liquid crystals

MOL CRYST LIQ CRYST 465 (2007) 1-14

Authors:

E Orlandini, D Marenduzzo, JM Yeomans

Abstract:

We numerically solve the hydrodynamic equations of motion for a cholesteric liquid crystal under an imposed Poiseuille flow, by means of lattice Boltzmann simulations. The elasticity of the cholesteric helix couples to the external flow to give rise to a highly viscoelastic flow. This is a technically difficult problem for standard flow solvers due to its fully two-dimensional nature. We consider a helix with axis parallel to the boundaries, and at the same time to either the primary flow or the vorticity direction (we identify these two flow modes as permeation and vorticity mode respectively). We quantify the large difference found in the steady state director and velocity profiles, and in the apparent viscosities obtained in the two cases.
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