@ARTICLE{Hadjichristov_Georgi_B._Light-stimulated_2018,
 author={Hadjichristov, Georgi B. and Marinov, Yordan G. and Petrov, Alexander G. and Prasad, Subbarao Krishna},
 volume={vol. 26},
 number={No 2},
 journal={Opto-Electronics Review},
 pages={172-182},
 howpublished={online},
 year={2018},
 publisher={Polish Academy of Sciences (under the auspices of the Committee on Electronics and Telecommunication) and Association of Polish Electrical Engineers in cooperation with Military University of Technology},
 abstract={Photoactive nanofilled nematic is proposed. Stable three-component photoresponsive nanocomposite was prepared from photo-insensitive nanofilled nematic by inclusion of 3 wt.% azobenzene-containing photoactive mesogen 4-(4′-ethoxyphenylazo)phenyl hexanoate (EPH). The host nanofilled nematic was produced from the room-temperature nematic liquid crystal 4-n-heptyl cyanobiphenyl (7CB) and 3 wt.% filler of Aerosil 300 hydrophilic silica nanospheres of size 7 nm. Apparent effect of stimulation with a relatively weak continuous illumination by UV light (375 nm wavelength) takes place for both the alternating-current electric field-dependent optical transmittance and the electro-optic amplitude-frequency modulation by thin films (25 µm thick) of the EPH/aerosil/7CB nanocomposite. The light-stimulated electro-optics of EPH-doped aerosil/7CB films and the corresponding reversible light control are achieved through trans-cis-trans photoisomerization of the photoactive agent EPH. As such, the initial electro-optical response of the studied photoactive nanocomposites is recovered with continuous blue-light illumination. The examined EPH/aerosil/7CB nanocomposites exhibit photo-controllable electro-optical response that is of practical interest.},
 type={Article},
 title={Light-stimulated electro-optics by azo-doped aerosil/7CB nanocomposites},
 URL={http://journals.pan.pl/Content/115310/PDF/main.pdf},
 keywords={Azo-doped nematic nanocomposites, Silica nanoparticles, Optical films, Electro-optical properties, Photo-controllable electro-optics},
}