Abstract
Flow visualization of a liquid crystal mixture in mini cylinders is conducted under application of the rotating electric fi elds. The mini cylinder with the electrodes on some parts of the inner surface of the cylinders is used. The cylinder is 1.0mm or 2.0mm in length and 1.1 mm in diameter. The three-phase alternating currents and the rectangular wave voltages are used as the rotating electric fields. The frequency and the amplitude of the voltages are changed to investigate the effect of the unsteady electric fields on the flow phenomenon of the liquid crystal mixture. When the frequency and the voltage of the three-phase voltages are 60Hz and 260V the rotation speed of the liquid crystal is 14.3 r.p.m. On the other hand, when the frequency and the voltage of a rectangular wave voltage are 600Hz and 200V the rotation speed is 2.7 r.p.m.
