Control of motion of fullerene colloidals by dielectrophoretic force for electronic paper-like display

We have investigated motion of fullerene particles in isotropic and anisotropic dielectric medium for the purpose of application of the particles in electronic paper-like display. The charged particles require higher DC electric field to react in the isotropic silicone oil medium in comparison with anisotropic liquid crystal medium, confirming that the dielectrophoretic force is mainly responsible for the motion of the particles. In addition, we proposed device which can express black, gray and white states with three terminal electrodes by suitable combination of the polarity of applied DC bias field. Finally, our investigation provides the optimization of driving scheme as well as electrode structure.