Nonequilibrium phase diagram of sticky nanotube suspensions |
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Authors: | Hobbie E K Fry D J |
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Affiliation: | National Institute of Standards and Technology, Gaithersburg, Maryland 20899, USA. |
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Abstract: | We report a universal phase diagram describing the evolution from solidlike networks to flowing nematics for "sticky" nanotube suspensions under an applied shear stress. Although the nanotubes are strongly non-Brownian, we find features characteristic of first-order phase transitions, including a discontinuity in the nematic order parameter at the isotropic-(para)nematic phase boundary. Using simple physical arguments, we account for the shape of the coexistence curves, as well as the dependence of the order parameter on concentration and stress. |
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