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A disclination is a line defect in which rotational symmetry is violated.[1] In analogy with dislocations in crystals, the term, disinclination, for liquid crystals first used by F. C. Frank and since then has been modified to its current usage, disclination.[2] It is a defect in the orientation of director whereas a dislocation is a defect in positional order.[3]


  1. ^ M. Murayama, J. M. Howe, H. Hidaka, S. Takaki. Atomic-Level Observation of Disclination Dipoles in Mechanically Milled, Nanocrystalline Fe. Science 29 (2002) 2433. doi:10.1126/science.1067430
  2. ^ S. Chandrasekhar, Liquid Crystals, p.123, Cambridge University Press 1977, ISBN 0-521-21149-2
  3. ^ . Pure Appl. Chem. 73 (2001) 845.

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