We present a model which predicts the possibility of inducing pressure waves in Ne- matic Liquid Crystals (NLCs), enclosed in an elec- trical wave-guide, by means of a suitable peri- odic electric potential applied at the electrodes. By proposing a novel interaction term which in- cludes the coupling between mass density, direc- tor and gradient of director fields, we predict that a periodic voltage with the appropriate amplitude can lead to the sought-after acoustic resonance in NLCs. Our numerical simulations show that this constitutive assumption leads to results in agree- ment with previous experimental measures; more- over, our results could serve as a guidance to de- sign further experiments.
Rosi, G., Teresi, L., Dell'Isola, F., DI CARLO, A. (2011). Coupling between mass density and director arrangement in Nematic Liquid Crystals. In Proceedings of the European COMSOL Conference 2011.
Coupling between mass density and director arrangement in Nematic Liquid Crystals
TERESI, Luciano;DI CARLO, Antonio
2011-01-01
Abstract
We present a model which predicts the possibility of inducing pressure waves in Ne- matic Liquid Crystals (NLCs), enclosed in an elec- trical wave-guide, by means of a suitable peri- odic electric potential applied at the electrodes. By proposing a novel interaction term which in- cludes the coupling between mass density, direc- tor and gradient of director fields, we predict that a periodic voltage with the appropriate amplitude can lead to the sought-after acoustic resonance in NLCs. Our numerical simulations show that this constitutive assumption leads to results in agree- ment with previous experimental measures; more- over, our results could serve as a guidance to de- sign further experiments.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
