title: Observation of polarization conflict caused by geometrical phase in a twisted nematic liquid crystal cell.
abstract: We analyze the optical effects associated with an adiabatic rotation of a plane of polarization in a twisted nematic liquid crystal. The experimental verification was performed with a cell with linear rubbing of a front surface and circular rubbing of a rear surface. The expectations of the liquid crystal's orientation defect origin along the line of the maximum tension and a polarization conflict caused by geometrical phase are confirmed.
authors.affiliation: Institute of Physics, National Academy of Sciences of Ukraine, Prospect Nauki 46, Kiev 03039, Ukraine. mvas@iop.kiev.ua
authors.forename: M V
authors.initials: MV
authors.lastname: Vasnetsov
authors.forename: V A
authors.initials: VA
authors.lastname: Pas'ko
authors.forename: D S
authors.initials: DS
authors.lastname: Kasyanyuk