Twist deformation in anticlinic antiferroelectric structure in smectic B2 imposed by the surface anchoring

A simplified model is used to estimate the energies of observed structures in the smectic B2 phase composed of bent‐shaped molecules. An approximate twist solution connecting anticlinic antiferroelectric structure in the sample bulk with synclinic ferroelectric order induced at the sample surfaces by anchoring is proposed and the elastic and anchoring energies of this structure are determined. It is shown that uniform, twisted and partly twisted (mixed) anticlinic antiferroelectric structures can coexist with nearly the same energies.

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