title: Effect of a bias electric field on the structure and dielectric response of the ferroelectric smectic-A liquid crystal in thin planar cells.
abstract: The phenomenological continuum model is used to study the director structure and dielectric response of the ferroelectric smectic-A phase in thin planar cells. The frequency of the phase mode and the dielectric permittivity are calculated numerically as a function of the bias external DC electric field, cell thickness, the strength of polar surface anchoring, and the ratio between the bend and splay elastic constants. The theoretically obtained dependencies are in agreement with the recently reported experimental measurements, which show that in thin planar cells both the phase mode frequency and the dielectric permittivity decrease with increasing external bias electric field.
authors.affiliation: Department of Physics, Faculty of Natural Sciences and Mathematics, University of Maribor, Koroška cesta 160, SI-2000 Maribor, Slovenia.
authors.forename: K
authors.initials: K
authors.lastname: Gornik
authors.affiliation: Department of Physics and Technical Studies, Faculty of Education, University of Ljubljana, Kardeljeva ploščad 16, SI-1000 Ljubljana, Slovenia and Jozef Stefan Institute, Jamova 39, SI-1000 Ljubljana, Slovenia.
authors.forename: M
authors.initials: M
authors.lastname: Čepič
authors.affiliation: Department of Physics, Faculty of Natural Sciences and Mathematics, University of Maribor, Koroška cesta 160, SI-2000 Maribor, Slovenia and Jozef Stefan Institute, Jamova 39, SI-1000 Ljubljana, Slovenia.
authors.forename: N
authors.initials: N
authors.lastname: Vaupotič
mesh_terms: D003198:Computer Simulation; D017097:Electric Impedance; D052578:Ionic Liquids / Q000737:chemistry* / Q000528:radiation effects*; D008567:Membranes, Artificial; D008956:Models, Chemical; D008958:Models, Molecular; D011829:Radiation Dosage
chemical_list: D052578:Ionic Liquids; D008567:Membranes, Artificial