In this paper we show the possibility of regulating the dose of the anchoring energy under the control of the incident light. Using a dye-doped nematic sample where it was previously demonstrated the effect of light-induced anchoring, we measured the threshold for the Fredericksz transition for different irradiation times using a low power laser beam. Our data compare favourably to the existing theory and show that the amount of induced anchoring energy increases linearly with the irradiation time.
Light-Controlled Anchoring Energy in Nematic Liquid Crystals / Francescangeli, Oriano; Lucchetta, Daniele Eugenio; Y., Reznikov; S., Slussarenko; Simoni, Francesco. - In: MOLECULAR CRYSTALS AND LIQUID CRYSTALS SCIENCE AND TECHNOLOGY. SECTION A, MOLECULAR CRYSTALS AND LIQUID CRYSTALS. - ISSN 1058-725X. - 360:(2001), pp. 193-201. [10.1080/10587250108025706]
Light-Controlled Anchoring Energy in Nematic Liquid Crystals
FRANCESCANGELI, ORIANO;LUCCHETTA, Daniele Eugenio;SIMONI, Francesco
2001-01-01
Abstract
In this paper we show the possibility of regulating the dose of the anchoring energy under the control of the incident light. Using a dye-doped nematic sample where it was previously demonstrated the effect of light-induced anchoring, we measured the threshold for the Fredericksz transition for different irradiation times using a low power laser beam. Our data compare favourably to the existing theory and show that the amount of induced anchoring energy increases linearly with the irradiation time.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
