Abstract
Electrooptic response in a free-standing (FS) ferroelectric liquid crystal film has been studied. The threshold field of the electrooptic effect in the FS film is negligible compared with that in a sandwich cell. Discontinuous dependence of response speed on the applied field is observed in the FS film. The response of FS film can be classified into three types. In order to clarify the switching mechanism, the texture of FS film has been observed. Looped π-walls appear after low-field inversion, while a disclination line at the film surface disappears in the high-field region in which response speed is proportional to E-1.
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