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We have invented the new principle to produce the slippery interfaces on the glass plates. Slippery interfaces are created by the localized disorder effect near the substrates. We designed and realized several proto types of the model for self-organized slippery interfaces. In the conventional LC display, switching dynamics is only defined by the motion of bulk director, because the director on the glass substrate is completely fixed due to the strong anchoring condition. By introducing the slippery interface, the motion of the surface director play key role for the switching dynamics as a new hydrodynamic variable. The reduction of the driving voltage and enhancement of mode efficiency can be achieved by the rotation of surface director. Furthermore, even the response time can be accelerated by the lubrication for the motion of surface director.
We characterize the slippery interface by measuring the dynamics of surface director ns after switching on/off or under the rotating the external magnetic field. The anchoring energy and the viscosity of the surface director can be evaluated directly from the dynamics of ns. On the other hand, the gliding phenomena, which is the movement of so-called easy axis nh, is investigated from the dynamics of ns after switching off the magnetic field. The gliding feature can be represented by the viscosity of the movement of the easy axis. It should be important to distinguish the dynamics of ns and nh independently. This work was supported by JST-CREST (JPMJCR1424).
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