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- W2092496114 abstract "Quasi-two-dimensional nematic systems have been achieved with the help of low anchoring energy substrate recently discovered. These 2-D nematics display two particular types of stabilization of order, according to the equilibrium angle of the director with the normal to the substrate. We show theoretically in this article that (i) When this angle is different from zero, stabilization is obtained by the long range fluctuations of this angle. The coherence length of these fluctuations is of the order of the mean distance between defects, which are therefore likely to be equilibrium defects; (ii) when the contact between the nematic and the substrate is homeotropic, stabilization occurs by the highly degenerate fluctuations in ϑ (azimuthal angle), which are now strongly coupled to the fluctuations in φ. These two fluctuations have now the same coherence length, while the coherence length in ϑ, ξϑ, is much larger than ξφ in the case (i)." @default.
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- W2092496114 date "1976-01-01" @default.
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- W2092496114 title "A note on two-dimensional nematic systems" @default.
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- W2092496114 doi "https://doi.org/10.1063/1.431935" @default.
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