High diffraction efficiency in permanent optical memories based on Methyl Red doped liquid crystal

Photo-Induced Anisotropy of Methyl Red Azo Dye in Polymer Film

“…Similar effect was observed in [15]. The diffraction efficiency enhancing up to 11.5 % was obtained in Methyl Red doped liquid crystal grating by re-illumination of the sample.…”

“…The FRS method is helpful to determine the electric field dependence of thermal and mass diffusion [10][11][12] and electrohydrodynamics of MR dye molecules in liquid crystals [13]. A MR-doped LC was used as a highresolution recording holographic medium [14][15][16]. The reference [17] describes the method of holographic grating formation in MR-doped surface-stabilized liquid crystal film.…”

Phase behavior of nematic-nanoparticle mixtures

“…Appropriate NPs could influence the nematic order via different generic mechanisms if inserted into nematic LCs. Important controlling parameters are the concentration of NPs, geometrical shape (Bellini et al, 2000;Kyrou et al, 2018;Kyrou et al, 2020;Skarabot et al, 2022), NP surface treatment (Nobili and Durand, 1992;Lavric et al, 2013a;Oswald and Pieranski, 2019;Kyrou et al, 2020), material characteristics of NPs (Mertelj et al, 2013;Kumar, 2014;Moghadas et al, 2015;Poursamad and Hallaji, 2017;Emdadi et al, 2018a;Emdadi et al, 2018b;Drozd-Rzoska et al, 2019;Jahanbakhsh et al, 2019;Poursamad and Emdadi, 2019;Lahiri et al, 2020;Bury et al, 2022;Ma et al, 2022;Sumandra et al, 2022), andLC material properties (de Gennes, 1995;Kleman and Lavrentovich, 2003;Oswald and Pieranski, 2019). Furthermore, NPs could effectively impose qualitatively different disorders on the LC order (Harris et al, 1973;Cleaver et al, 1996;Crawford and Žumer, 1996;Radzihovsky and Toner, 1997;Popa-Nita and Kralj, 2006).…”