Topological defects in a nematic filled with colloid particles

Serguey V. Shiyanovskii; O. V. Kuksenok; R. W. Ruhwandl; E. M. Terentjev

doi:10.1117/12.266362

7 February 1997 Topological defects in a nematic filled with colloid particles

Serguey V. Shiyanovskii, O. V. Kuksenok, R. W. Ruhwandl, E. M. Terentjev

Proceedings Volume 2949, Imaging Sciences and Display Technologies; (1997) https://doi.org/10.1117/12.266362
Event: Advanced Imaging and Network Technologies, 1996, Berlin, Germany

Abstract

We theoretically investigate topological constraints and the defect structure around a spherical body immersed in a uniform nematic liquid crystal. Depending on the strength of anchoring on the particle surface, there are three possibilities. At rigid anchoring WR/K >> 1, the inner surface constraint forces a disclination ring of a radius at approximately 1.2*R, with R the particle size. At a lower, critical value W* the disclination rings contracts to the surface and, for small anchoring, WR/K << 1, the director distribution is regular, defect-free.

Citation Download Citation

Serguey V. Shiyanovskii, O. V. Kuksenok, R. W. Ruhwandl, and E. M. Terentjev "Topological defects in a nematic filled with colloid particles", Proc. SPIE 2949, Imaging Sciences and Display Technologies, (7 February 1997); https://doi.org/10.1117/12.266362

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