Resonance phenomena in a ferroelectric liquid crystal near the phase transition SmA-SmC*

Dynamic properties of ferroelectric liquid crystals have been studied by me ans of observation of electric, optical and mechanical responses to the ste p-like change of electric field strength. A resonance low-frequency mode in terpreted as a texture one has been revealed near the phase transition SmA - SmC*. Interaction between this texture resonance mode and bending modes o f glass cell plates and the synchronization effect have been found. Tempera ture and electric field dependences of the texture resonance mode parameter s are given.