Physics – Condensed Matter – Mesoscale and Nanoscale Physics
Scientific paper
2011-01-05
Physics
Condensed Matter
Mesoscale and Nanoscale Physics
10 pages, 2 figures
Scientific paper
Aggregation of carbon nanotubes dispersed in nematic liquid crystalline medium is discussed. A model is proposed, which assumes that the aggregates consist of a "skeleton" formed by stochastically arranged nanotubes and a "shell" ("coat") of incorporated and adjacent nematic molecules. The aggregates of this type can be considered as large quasi-macroscopic particles in the nematic matrix. The resulting composite system represents a new type of complex molecular liquids involving self-organization of particles in anisotropic medium. Many essential features and implications of the theoretical model (e.g., effects of concentration of the nanotubes, their aspect ratio and orientational order parameter on the size and fractal dimensionality of the aggregates formed, as well as on the rate of aggregation) are in good agreement with experimental data obtained by various physical methods.
Lebovka Nikolai I.
Lisetski Longin N.
Naydenov Sergei V.
Soskin Marat S.
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