Exposure and temperature dependences of contact angle of liquid crystals on photoaligning surface

• Autorzy: Gvozdovskyy I. , Kurioz Y. , Reznikov Y.
• Języki publikacji: EN

Abstrakty

EN

We report on first studies of wetting of liquid crystal on photoaligning surface. We observed strong light-induced variations of a contact angle of a liquid LC 5CB on a photoaligning surface of fluoro-polyvinyl-cinnamate (PVCN-F) and we connected these variations with changes of PVCN-F polarity. We also present drastic changes of the contact angle of a nematic liquid crystal (MLC-6080) on the PVCN-F surface in a vicinity of temperature anchoring transition of liquid crystal from homeotropic orientation to planar one. We did not find any peculiarities in temperature dependence of the contact angle of isotropic liquid (glycerol) on PVCN-F and of nematic liquid crystal on pure glass in the same temperature range. It allows us to suggest that rearrangement of LC molecules and flexible fragments in the LC-polymer interface are responsible for the change of surface tensions both of LC and polymer and the observed jump of the contact angle.

Słowa kluczowe

EN

nematic liquid crystal; photoalignment; PVCN-F; contact angle

• Wydawca: Stowarzyszenie Elektryków Polskich ; Polska Akademia Nauk ; Wojskowa Akademia Techniczna im. Jarosława Dąbrowskiego
• Czasopismo: Opto-Electronics Review
• Rocznik: 2009
• Tom: Vol. 17, No. 2
• Strony: 116--119
• Opis fizyczny: Bibliogr. 10 poz., wykr., il.

Twórcy

autor

Gvozdovskyy I.

autor

Kurioz Y.

autor

Reznikov Y.

• Institute of Physics, National Academy of Sciences of Ukraine, 46 Nauky Prospect, 03-028 Kyiv, Ukraine,

Bibliografia

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