Details

Autor(en) / Beteiligte

• Lucchetti, L.
• Catani, L.
• Simoni, F.

Titel

Light-controlled electric Freedericksz threshold in dye doped liquid crystals

Ist Teil von

• Journal of applied physics, 2014-05, Vol.115 (20)

Ort / Verlag

Melville: American Institute of Physics

Erscheinungsjahr

2014

Quelle

AIP Journals Complete

Beschreibungen/Notizen

• We report the results of measurements of the threshold of Freedericksz transition in a nematic liquid crystal doped by Methyl-red. We show that in case of dc field the threshold voltage can decrease or increase depending on the light dose, due to the light-induced desorption and adsorption of charge complexes from and on the irradiated surface, that has been recently demonstrated. This effect has the potential to be exploited in optical devices such as liquid crystal microlenses and spatial light modulators.