Transport by electric field



AC electric field induces a macroscopic transport of colloidal particles along the nematic director. The motion of particles is governed by dielectrophoretic and nematic structural forces. Using patterned parallel electrodes we have observed that colloidal particles could be pumped and accelerated across the field – no-field interface.


Vanjska poveznica se otvara u novoj kartici ili prozoru

MOVIE: Transport of 4 micron particles from the area with AC electric field to the no-field area observing under polarization microscope.
Vanjska poveznica se otvara u novoj kartici ili prozoru

MOVIE: Acceleration of colloidal particles across the »field« - »no-field« interface.

Vanjska poveznica se otvara u novoj kartici ili prozoru


Different 2D hexagonal crystallites are formed after pumping to the »no-field« region.



M. Škarabot, U. Tkalec and I. Muševič, Vanjska poveznica se otvara u novoj kartici ili prozoruTransport and crystallization of colloidal particles in a thin nematic cell. The European physical journal. E, 24, 99, (2007).