The order parameter dependence of the flexoelectric coefficients in nematic liquid crystals
نویسندگان
چکیده
منابع مشابه
The order parameter dependence of the flexoelectric coefficients in nematic liquid crystals
2014 Within the general framework of Landau-de Gennes theory for nematic liquid crystals it is shown that the difference of flexoelectric coefficients e* = e1 e3 ~ S2, where S is the nematic order parameter. This result agrees with the molecular theory but is in contradiction with recent measurements of the constant e* which yield e* ~ S. The contradiction can be resolved by the inclusion of co...
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As we have discussed in Chapter I of this thesis, the nematic director is apolar. IIence the usual dielectric coupling with an external electric field depends quadratically on the latter. However, as has been discussed earlier a deformed director field with a splay and/or bend distortion can lead to a flexoelectric polarisation of the medium. The response of liquid crystals to an electric field...
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ژورنال
عنوان ژورنال: Journal de Physique Lettres
سال: 1984
ISSN: 0302-072X
DOI: 10.1051/jphyslet:019840045016082300