| Autor: |
Hinov, H.P., Bivas, I., Mitov, M.D., Shoumarov, K., Marinov, Y. |
| Předmět: |
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| Zdroj: |
Liquid Crystals; Nov2003, Vol. 30 Issue 11, p1293, 25p |
| Abstrakt: |
Parallel surface-induced flexoelectric domains (flexo-dielectric walls) have been further studied using new tools--a shadowgraph technique and computer processing of the most important images. It was unambiguously proved that the domains are a manifestation of the quadrupolar flexoelectric effect arising in a non-homogeneous electric field created by injection or by double electric layers. In the latter case they began to form at a d.c. voltage of 0.3-0.5 V. Furthermore, they arose near the injecting electrode and interfered with rubbing-induced domains at the junctions of every two adjacent domains. Flexo-dielectric walls have been obtained for the first time in the liquid crystal p - n -butyl- p -methoxyazoxybenzene and new experimental facts have been discovered. A new model for their creation is proposed. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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