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"Ferroelectric smectic (SmC) phase" Anchoring effects on the polymer films in the liquid crystal (LC) display devices plays key role to create the restoring force to the black state for any types of display modes, such as IPS, STN, VA and OCB etc. On the contrary, we have designed the slippery interfaces in the homeotropic ferroelectric (SmC*) liquid crystals for the DH-FLC mode as walls wetted on the electrodes in the in-plane switching cell, and success to reduce the driving voltage keeping the ultra-fast response.
"Principle & Design" We have invented the new principle to produce the slippery interfaces on the glass plates or even nano-interfaces embedded in the materials such as PSChBP. Slippery interfaces are created by the disorder effect induced by the several types of frustration. For example, the impurities with surface affinity weaken or melt the liquid crystalline (LC) order near the interfaces, then boundary region of LC spontaneously play roles on the slippery interfaces. Therefore, the anchoring effect disappears, and molecular motion is lubricated by the slippery interfaces. Especially, change of the anchoring to the slippery condition can be controlled by UV illumination on localized azo dye surfaces.
"Evaluation" We measure the dynamics of surface director rotation under rotating magnetic field, and analyze the response of the surface director by changing the strength of the magnetic field and rotation speed of the cell. Therefore, we correctly evaluate the change of the anchoring condition which is related to the anchoring energy and viscosity of surface director. Anchoring phenomena is strongly dependent on the model of the slippery interface, the temperature and even the LC materials on the interface.
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