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- W1983587788 abstract "The recently developed fundamental measure density functional theory (Hansen-Goos and Mecke 2009 Phys. Rev. Lett. 102 018302) for an inhomogeneous anisotropic hard body fluid is used as a basic ingredient in treating the Brownian dynamics of hard spherocylinders. After discussing the relevance of a free parameter in the fundamental measure density functional for the isotropic-nematic transition in equilibrium, we discuss the equilibrium phase behaviour of hard spherocylinders in a static external potential which couples only to the orientations. For external potentials favouring rod orientations along the poles of the unit sphere, there is a well-known paranematic-nematic transition which ceases to exist above a threshold of the strength V(0) of the external potential. However, when orientations along the equator are more favoured, in the plane of the potential energy V(0) and density, there is a phase transition from paranematic to nematic for any strength, which becomes second order above a critical threshold of V(0). The full equilibrium phase diagram in the V(0)-density plane is computed for a fixed rod aspect ratio of 5. For the equatorial cases, strength V(0) is then oscillating in time and dynamical density functional theory is used to compute the evolution of the orientational distribution. A subtle resonance for increasing oscillation frequencies is detected if the oscillating V(0) crosses the paranematic-nematic phase transition." @default.
- W1983587788 created "2016-06-24" @default.
- W1983587788 creator A5028221319 @default.
- W1983587788 creator A5083028897 @default.
- W1983587788 date "2010-02-23" @default.
- W1983587788 modified "2023-10-16" @default.
- W1983587788 title "Fundamental measure density functional theory for hard spherocylinders in static and time-dependent aligning fields" @default.
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- W1983587788 doi "https://doi.org/10.1088/0953-8984/22/10/104112" @default.
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