Condensed Matter Theory

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Partial-post laplace barriers for virtual confinement, stable displacement, and >5 cm s-1 electrowetting transport

LAB ON A CHIP 11:24 (2011) 4221-4227

Authors:

E Kreit, BM Mognetti, JM Yeomans, J Heikenfeld
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Phase diagram and continuous pair-unbinding transition of the bilinear-biquadratic S=1 Heisenberg chain in a magnetic field

PHYSICAL REVIEW B 83:18 (2011) ARTN 184433

Authors:

Salvatore R Manmana, Andreas M Laeuchli, Fabian HL Essler, Frederic Mila
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Phase diagram and continuous pair-unbinding transition of the bilinear-biquadratic S=1 Heisenberg chain in a magnetic field

(2010)

Authors:

Salvatore R Manmana, Andreas M Läuchli, Fabian HL Essler, Frédéric Mila
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Dynamics at and near conformal quantum critical points

(2010)

Authors:

SV Isakov, P Fendley, AWW Ludwig, S Trebst, M Troyer
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Modeling receding contact lines on superhydrophobic surfaces.

Langmuir 26:23 (2010) 18162-18168

Authors:

BM Mognetti, JM Yeomans

Abstract:

We use mesoscale simulations to study the depinning of a receding contact line on a superhydrophobic surface patterned by a regular array of posts. For the simulations to be feasible, we introduce a novel geometry where a column of liquid dewets a capillary bounded by a superhydrophobic plane that faces a smooth hydrophilic wall of variable contact angle. We present results for the dependence of the depinning angle on the shape and spacing of the posts and discuss the form of the meniscus at depinning. We find, in agreement with ref 17 , that the local post concentration is a primary factor in controlling the depinning angle and show that the numerical results agree well with recent experiments. We also present two examples of metastable pinned configurations where the posts are partially wet.
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