In this paper we investigate the chaotic dynamics occurring in a nematic liquid crystal film during the director reorientation induced by an intense optical field. The experimental evidence of intermittency in the phenomenon of the molecular director reorientation is reported. It is demonstrated that the fluctuations of the transmitted light intensity I(t) follow a non-normal distribution and, by calculating the q-th power of the structure functions of I(t), the multifractal structure of the attractor is characterized. On the basis of these results, a heuristic model for the energy exchange between the radiation and the matter is introduced, which is based on a two-scale Canter set with equal partition intervals.
In this paper we investigate the chaotic dynamics occurring in a nematic liquid crystal film during the director reorientation induced by an intense optical field. The experimental evidence of intermittency in the phenomenon of the molecular director reorientation is reported. It is demonstrated that the fluctuations of the transmitted light intensity I(t) follow a non-normal distribution and, by calculating the q-th power of the structure functions of I(t), the multifractal structure of the attractor is characterized. On the basis of these results, a heuristic model for the energy exchange between the radiation and the matter is introduced, which is based on a two-scale Canter set with equal partition intervals.
Statistical characterization of laser generated instabilities in a nematic liquid crystal film.
VERSACE, Consolato Carlo;CARBONE, Vincenzo;CIPPARRONE, Gabriella;UMETON, Cesare Paolo;
1996-01-01
Abstract
In this paper we investigate the chaotic dynamics occurring in a nematic liquid crystal film during the director reorientation induced by an intense optical field. The experimental evidence of intermittency in the phenomenon of the molecular director reorientation is reported. It is demonstrated that the fluctuations of the transmitted light intensity I(t) follow a non-normal distribution and, by calculating the q-th power of the structure functions of I(t), the multifractal structure of the attractor is characterized. On the basis of these results, a heuristic model for the energy exchange between the radiation and the matter is introduced, which is based on a two-scale Canter set with equal partition intervals.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
