20.500.12556/RUL-128546 Optical properties of metamaterial split ring nematic colloids The fabrication of 3D bulk metamaterials, optical materials with sub-wavelength building blocks, is an open challenge, along with the tuning of their optical properties, such as transmissivity or exit polarization where a possible approach is to embed liquid crystalline materials into metamaterials and use their tunable birefringence. In this work, we explore using numerical modelling the photonic properties of a composite of split ring resonator colloidal particles, dispersed in nematic liquid crystal, which was optimised to enable self-assembly fully. Specifcally, using generalised FDTD simulations for light propagation in birefringent profles, we demonstrate the photonic response of single particles, 2D and 3D colloidal crystals. The material transmittance is shown to exhibit clear resonant behaviour with the resonances tunable with the birefringence in the order of ~5%. Electric and magnetic feld modes emergent on the particles are shown, as afected by the surrounding nematic birefringence, both the in the slit region of the split ring resonator (SRR) particles as well as around the particles. Observed photonic response is further explained by introducing basic equivalent LC circuits. Finally, this work is aimed at developing soft and fuid metamaterials, which exhibit optical anisotropy in the photonic response as a potent mechanism for controlling the fow of light at wavelength and even sub-wavelength scales. nematic colloids colloidal crystals optical properties photonics metamaterials nematski koloidi koloidni kristali optične lastnosti fotonika metamateriali true false true Angleški jezik Slovenski jezik Članek v reviji 2021-07-19 12:45:52 2021-07-19 12:45:53 2022-09-07 04:15:51 0000-00-00 00:00:00 2019 0 0 10 str. art. 7025 Vol. 9 2019 0000-00-00 Zaloznikova Objavljeno NiDoloceno 0000-00-00 0000-00-00 0000-00-00 535 2045-2322 10.1038/s41598-019-43470-6 3307876 RAZ_Pusovnik_Anja_2019.pdf RAZ_Pusovnik_Anja_2019.pdf 1 0FE99C14A73925FC97E3C74659794028 8717d73c9c18d51d814bdf6836145eee2aa108add5bf9c22166b30254ee2052b 9075e024-e87e-11eb-a523-00155dcfd717 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=145315 https://www.nature.com/articles/s41598-019-43470-6 0 952c6b86-e87e-11eb-a523-00155dcfd717 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=145316 Fakulteta za matematiko in fiziko 0 0 0