Application of Aligned 8CB: A Solution to ``Time Lag'' Drawback of LCDs

Liquid crystal devices (LCDs) uses nematic to isotropic (N-I) phase transition of the liquid crystal to get more vibrant images on the screen where LCDs takes longer response times ``Time Lag'' than their plasma and CRT counterparts creating visible ghosting when images rapidly change. For example, when moving the mouse quickly on a LCD, multiple cursors can sometimes be seen. This time lag can be related to the time taken by nematic state to reach to the isotropic state of liquid crystal during the N-I phase transition. The current research focuses how the aligned domain of the octylcyanobiphenyl (8CB) liquid crystal indicates a reduced time lag during N-I transition in the presence of an external magnetic field when compared to the unaligned 8CB. The presence of magnetic field imposes a force to the liquid crystal molecules and changes the director of nematic domain towards field creating a long range ordered nematic matrix of the liquid crystal 8CB and forces the N-I phase transition to occur earlier than unaligned 8CB phase transition.