2D interactions and binary crystals of dipolar and quadrupolar nematic colloids |
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Authors: | Ognysta U Nych A Nazarenko V Musevic I Skarabot M Ravnik M Zumer S Poberaj I Babic D |
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Affiliation: | Institute of Physics, 46 Nauky avenue, Kyiv 680028, Ukraine. |
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Abstract: | In this Letter, we demonstrate that the symmetry of the elastic interaction between the dipolar and quadrupolar colloidal particles in the nematic liquid crystal leads to a novel variety of 2D nematic "binary" colloidal crystals, which have not been observed in any colloidal system. The dipolar-quadrupolar interaction is highly anisotropic and shows a power-law dependence when the particles approach each other along the director field with a pair-binding energy of the order of several thousands of k(B)T for 4 microm diameter colloids. |
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