Wyniki wyszukiwania - Biblioteka Nauki

Nowa wersja platformy, zawierająca wyłącznie zasoby pełnotekstowe, jest już dostępna.
Przejdź na https://bibliotekanauki.pl

Ograniczanie wyników

1 Opto-Electronics Review

1 2002

Znaleziono wyników: 1

Liczba wyników na stronie

Wyniki wyszukiwania

Sortuj według:

Ogranicz wyniki do:

Electrooptical properties of metal organic ionic liquid crystals

100%

Klimusheva G. , Koval'chuk A. , Volynets N. , Vakhnin A.

Opto-Electronics Review

2002

tom Vol. 10, No. 1

39-42

Electrooptics of smectic liquid crystals has been drawing an increasing interest, especially for new classes of compounds, such as metal alkanoates which manifest as thermotropic as lyotropic smectic mesophases. In the present work, electric and electrooptic properties were studied in detail of pure and dye-doped (polymethine dye) potassium kaproate, a water mixture of which is forming a lyotropic Sm A type liquid crystalline phase at room temperature. As follows from experimental data, for frequencies - f < 3 x 10⁴ Hz, dispersion of the components of complex dielectric permittivity ε' and ε'' is observed. Appropriate relaxation process is described by the Debye equation. On the basis of the analysis of frequency dependencies of ε' ε'' for the frequencies f > 3 x 10⁴ Hz the conductivity of samples on an alternating current was found. The introduction of dye in ionic lyotropic liquid crystals (ILLC) results in increase in conductivity (by 1.5 times) and reduction of relaxation time. The bleaching of the dye in ILLC under the action of a direct voltage (U>5V) was observed. The mechanism explaining "threshold" character of such process was proposed.