Abstract
A normal mode analysis was carried out on directors interacting through the Maier-Saupe type interaction, simulated in the 2-dimensional lattice model. The analysis for the director system containing a set of ±1/2 disclinations was compared with the case without disclinations in terms of the vibration patterns of the individual modes. Most modes for the system with the disclinations showed similar vibration patterns to the patterns for the corresponding modes of the system without disclinations, especially at high frequencies, but it was found that some lowest modes could make active the local motions around the disclinations. A similar observation was made on the systems with more disclinations. It was suggested that an application of a specific frequency could activate only the motion of disclinations without disturbing the rest of the ordered region.
