@article{ee32f537fd7e4b15b872461c3c0a6b0c,
title = "Influence of gamma radiation on the electrooptic behavior of planar nematic liquid crystal cells",
abstract = "We irradiated planar nematic liquid crystal cells with gamma-rays, to study the radiation hardness of their electrooptic characteristics. From the evolution of the electrooptic retardance curve with irradiation dose, we estimated the change of the characteristic liquid crystal material parameters with dose, using a nonlinear least square fitting algorithm. The overall gamma radiation hardness of the device is satisfactory up to doses of 456 kGy(H2O). Two effects, however, influence the operation of liquid crystal cells as voltage tuneable retarders. Radiation affects first the cohesion of the liquid crystal molecules at the boundaries and second, the conductivity of the liquid crystal cells.",
keywords = "Birefringence, Conductivity, Electrooptic materials/devices, Gamma-ray effects, Liquid crystal materials/devices, Parameter estimation, Permittivity, Radiation effects",
author = "Francis Berghmans and Krzysztof Zdrodowski and Tomasz Nasilowski and Marc Decr{\'e}ton and Irina Veretennicoff and Hugo Thienpont",
year = "1997",
month = apr,
doi = "10.1109/68.559395",
language = "English",
volume = "9",
pages = "481--483",
journal = "IEEE Photonics Technology Letters",
issn = "1041-1135",
publisher = "Institute of Electrical and Electronics Engineers Inc.",
number = "4",
}