| 초록 |
Control of the defect shape of smectic liquid crystals is presented by geometric confinement. Due to antagonistic anchoring conditions of liquid crystals at the smectic A and air interface in microchannels coated planar anchoring materials, smectic liquid crystals form typical defect textures called toric focal conic domains (TFCDs). By changing channel geometry from rectangle to trapezoid, a half-sized defect texture of 8CB near side walls disappear, and linear arrays of TFCDs are preserved in large area in trapezoid channels. We explained why the phenomenon exists and investigated the critical confined geometry of TFCDs in trapzoid channel and the effect of channel size on the dimension of TFCDs. |
