Surfactant-controlled light-induced reorientation in dye-doped nematic liquid crystals

Stefania Residori; Artyom Petrosyan

doi:10.1117/12.545501

8 September 2004 Surfactant-controlled light-induced reorientation in dye-doped nematic liquid crystals

Stefania Residori, Artyom Petrosyan

Proceedings Volume 5464, Organic Optoelectronics and Photonics; (2004) https://doi.org/10.1117/12.545501
Event: Photonics Europe, 2004, Strasbourg, France

Abstract

We show that a very large optical response is obtained in azo-dye doped nematic liquid crystals for low input light intensities (of the order of a few tens of μW/cm² and that this extreme sensitivity of the nematic film results from a combined action of the photoisomerization process of the azo-dye molecules and the light-induced changes of the anchoring energy. The liquid crystal reorientation can be controlled by changing the molecular length of the ionic surfactant which is used as anchoring agent.

Citation Download Citation

Stefania Residori and Artyom Petrosyan "Surfactant-controlled light-induced reorientation in dye-doped nematic liquid crystals", Proc. SPIE 5464, Organic Optoelectronics and Photonics, (8 September 2004); https://doi.org/10.1117/12.545501

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