Condensed Matter Theory

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Modelling droplets on superhydrophobic surfaces: equilibrium states and transitions

(2005)

Authors:

A Dupuis, JM Yeomans
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Luminescence ring formation in quantum wells - A model with Coulomb interaction

Solid State Communications 134:1-2 (2005) 59-62

Authors:

S Denev, SH Simon, DW Snoke

Abstract:

The appearance of a luminescence ring around a central illumination spot in quantum well structures is now well understood in terms of charge separation between the electron and hole gasses in the quantum well region with the ring appearing at their boundary. We propose a slightly modified model including Coulomb interaction between the electron and hole gas and their image charge. © 2005 Elsevier Ltd. All rights reserved.
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Spontaneous interlayer exciton coherence in quantum Hall bilayers at v=1 and v=2: a tutorial

Solid State Communications Elsevier 134:1-2 (2005) 81-88
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Numerical calculations of the phase diagram of cubic blue phases in cholesteric liquid crystals

(2005)

Authors:

A Dupuis, D Marenduzzo, JM Yeomans
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Modeling droplets on superhydrophobic surfaces: equilibrium states and transitions.

Langmuir 21:6 (2005) 2624-2629

Authors:

A Dupuis, JM Yeomans

Abstract:

We present a lattice Boltzmann solution of the equations of motion describing the spreading of droplets on topologically patterned substrates. We apply it to model superhydrophobic behavior on surfaces covered by an array of micrometer-scale posts. We find that the patterning results in a substantial increase in contact angle, from 110 degrees to 156 degrees. The dynamics of the transition from drops suspended on top of the posts to drops collapsed in the grooves is described.
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