20.500.12556/RUL-176586 Three-dimensional planar alignment of nematic liquid crystal by direct laser writing of nanogratings We demonstrate a new method of aligning liquid crystals along polymer surfaces that are printed vertical to the focal plane using direct laser writing. The method is based on nanogrooves that are imprinted into surfaces of polymer structures and provide robust, reliable, repeatable, and well-controlled alignment patterns. Our results demonstrate that the anchoring strength of a liquid crystal on printed nanogratings is comparable to that of conventional polyimide layers. The advantages are at least 2-fold. First, we can print large vertical areas of well-defined patterns of nanogrooves with uniform anchoring strength, and, second, we can control the azimuthal anchoring strength by adjusting the amplitude and the periodicity of nanogrooves. Printing of alignment nanogrooves on tilted, curved and surfaces of arbitrary shape could be realized using printing protocols based on the principle shown here with potential applications in emerging microphotonic devices based on liquid crystals. 3D printing liquid crystals alignment layer direct laser writing displays microphotonic elements crystal structure lasers layers organic polymers tekoči kristali 3D tiskanje laserji true false true Angleški jezik Slovenski jezik Članek v reviji 2025-12-04 13:19:11 2025-12-04 13:19:12 2025-12-22 04:13:06 0000-00-00 00:00:00 2025 0 0 Str. 5970−5977 iss. 11 Vol. 12 2025 0000-00-00 Zaloznikova Objavljeno NiDoloceno 0000-00-00 0000-00-00 0000-00-00 539 2330-4022 10.1021/acsphotonics.5c01342 254269443 three-dimensional-planar-alignment-of-nematic-liquid-crystal-by-direct-laser-writing-of-nanogratings.pdf three-dimensional-planar-alignment-of-nematic-liquid-crystal-by-direct-laser-writing-of-nanogratings.pdf 1 5345C7A9232938749BE54AE2E0AB60E8 b2dcf96e82d0b40d6be5e134eb762c736c6b291dbe768ff6f53e4c15f7d477bc ad984d23-d10b-11f0-9328-0050569b8976 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=223010 https://pubs.acs.org/doi/10.1021/acsphotonics.5c01342 1 0dc25f72-d10b-11f0-9328-0050569b8976 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=223009 Fakulteta za matematiko in fiziko 0 0 0