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    49. Density functional theory for sphere-needle mixtures: Toward finite rod thickness
    A. Esztermann and M. Schmidt, Phys. Rev. E 70, 022501 (2004).
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    Abstract. For mixtures of hard spheres and hard spherocylinders of large aspect ratio a recently proposed density functional theory is extended to incorporate effects due to nonvanishing rod thickness. This is accomplished by introducing several new geometric weight functions into the framework. We demonstrate explicitly how these weight functions recover the sphere-rod Mayer bond. [figures]

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    Rod-sphere mixtures

    The DFT of [19] was extended to treat rod-rod interactions [30] [49], and used for free fluid interfaces [30] and wetting at a hard wall [40]. Simulations [42] confirmed unusual interfacial rod ordering. See [25] for the demixing phase behavior of the system upon adding polymers.

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MS, 20 Apr 2009.