Non-Debye relaxation in the dielectric response of nematic liquid crystals: surface and memory effects in the adsorption-desorption process of ionic impurities.

Abstract

We demonstrate theoretically that the presence of ions in insulating materials such as nematic liquid crystals may be responsible for the dielectric spectroscopy behavior observed experimentally. It is shown that, at low frequencies, an essentially non-Debye relaxation process takes place due to surface effects. This is accomplished by investigating the… (More)

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@article{Paula2012NonDebyeRI, title={Non-Debye relaxation in the dielectric response of nematic liquid crystals: surface and memory effects in the adsorption-desorption process of ionic impurities.}, author={J. L. de Paula and Piera Santoro and Rafael S. Zola and E K Lenzi and Luiz R. Evangelista and Federica Ciuchi and A Mazzulla and Nicoletta Scaramuzza}, journal={Physical review. E, Statistical, nonlinear, and soft matter physics}, year={2012}, volume={86 5 Pt 1}, pages={051705} }