Formation of two-dimensional crystal-like structures from inclusions in smectic C films |
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| Authors: | P Cluzeau G Joly H T Nguyen V K Dolganov |
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| Institution: | (1) Laboratoire de Dynamique et de Structure des Matériaux Moleculaires, ESA CNRS 8024, Universite de Lille I, 59655 Villeneuve d’Ascq Cedex, France;(2) Centre de Recherche Paul Pascal, CNRS, Universite de Bordeaux I, F-33600 Pessac, France;(3) Institute of Solid State Physics, Russian Academy of Sciences, Chernogolovka, Moscow region, 142432, Russia |
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| Abstract: | The structures formed by inclusions in smectic C (SmC) free-standing films are investigated using polarized light microscopy. The domains confined in these two-dimensional (2D) systems induce distortion of the inplane orientational order, which governs the elastic interaction between the inclusions. The balance between long-range quadrupolar attraction and short-range repulsion gives rise to a nontrivial collective behavior of domains. Various 2D structures are created as a function of the concentration and size of inclusions. We observe the formation of chains and then a 2D square lattice when the concentration of domains increases. Further increase in the domain size leads to the transition from square to hexagonal close-packed structure. |
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