20.500.12556/RUL-129632 Kinetics of holographic recording and spontaneous erasure processes in light-sensitive liquid crystal elastomers The optical mechanism for imprinting one-dimensional grating structures into thin films of a light-sensitive monodomain liquid crystal elastomer is investigated by analyzing the time dependence of optical diffraction properties. The recording kinetics shows an irregular oscillatory behavior, which is most expressed at small grating spacings and at temperatures close to the nematic-isotropic phase transition. The oscillations are attributed to the opto-mechanical response of the film, i.e., to contraction of the film during the recording process. At temperatures far below the nematic-isotropic phase transition, the spontaneous erasure kinetics exhibits exponential relaxation with relaxation time following the Arrhenius activation law. However, at temperatures close to the nematic-isotropic phase transition, the erasure process shows an interesting nonmonotonic behavior that we attribute to the non-linear relation between the concentration of the photo-transformed chemical groups and the nematic order parameter. liquid crystal elastomers light-sensitive materials holographic lithography optical microstructuring recording kinetics true false true Angleški jezik Ni določen Članek v reviji 2021-09-06 11:57:02 2021-09-06 11:57:02 2022-09-08 04:09:43 0000-00-00 00:00:00 2012 0 0 Str. 741-753 iss. 5 Vol. 5 2012 0000-00-00 Zaloznikova Objavljeno NiDoloceno 0000-00-00 0000-00-00 0000-00-00 53 1996-1944 10.3390/ma5050741 25765927 RAZ_Gregorc_Marko_2012.pdf RAZ_Gregorc_Marko_2012.pdf 1 4772F8E8175252D4F56CF87B6FE725E7 f0600cd77aa5c30da03d4186b42fb13191329204fa2fbb7d74111a2e40b5a877 688b46c4-0ef9-11ec-a523-00155dcfd717 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=146647 https://www.mdpi.com/1996-1944/5/5/741 0 385b735b-0ef9-11ec-a523-00155dcfd717 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=146646 Fakulteta za matematiko in fiziko 0 0 0