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Novel Colloidal Interactions in Anisotropic Fluids

Science  21 Mar 1997:
Vol. 275, Issue 5307, pp. 1770-1773
DOI: 10.1126/science.275.5307.1770

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Abstract

Small water droplets dispersed in a nematic liquid crystal exhibit a novel class of colloidal interactions, arising from the orientational elastic energy of the anisotropic host fluid. These interactions include a short-range repulsion and a long-range dipolar attraction, and they lead to the formation of anisotropic chainlike structures by the colloidal particles. The repulsive interaction can lead to novel mechanisms for colloid stabilization.

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