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Influence of temperature on dynamics of birefringence switching in photochromic nematic phase.
Autorzy
Rok wydania
2011
Czasopismo
Numer woluminu
110
Strony
113104/1- 113104/5
DOI
10.1063/1.3665123
Kolekcja
Język
Angielski
Typ publikacji
Artykuł
We present results of dynamic and fast switching of birefringence in a photochromic liquid-crystalline system as a function of the sample temperature. The system consists of photochromic molecules of 4-heptyl-4′-methoxyazobenzene showing a liquid-crystalline nematic state close to room temperature. An experiment of dynamic birefringence switching was done in optical Kerr-effect set-up, where for the sample excitation, a picosecond-pulsed laser was used. Measurements were done for different temperatures of the sample in the liquid-crystalline nematic phase. We have proposed a mathematical model of dynamic, fast, and fully reversible birefringence changes. Theoretical estimations and experimental results have shown very good agreement.I.
Adres publiczny
https://doi.org/10.1063/1.3665123
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