title: Model of dark conglomerate structure in the B2 phase of bent-shape molecules.
abstract: Texture observations in B2 phase of bent-shape molecules showed a coexistence of so-called dark conglomerate (DC) structure with fan-shaped texture composed of focal conic domains (FCDs). A model of DC structure based on grains of dimensions lower than visible wavelengths is proposed and used to compare the energies of DC and FCD structures. The comparison of energies of both structures enables the estimation of approximate model parameters. Reorientation of smectic layers in grains under an electric field and transformation into the system of FCD structure are discussed.
authors.affiliation: Institute of Physics, Academy of Sciences of the Czech Republic, Na Slovance 2, 182 21 Prague 8, Czech Republic. lejcekl@fzu.cz
authors.forename: Lubor
authors.initials: L
authors.lastname: Lejček
authors.forename: Milada
authors.initials: M
authors.lastname: Glogarová
authors.forename: Vladimíra
authors.initials: V
authors.lastname: Novotná