20.500.12556/DKUM-87754 Reconfiguration of nematic disclinations in plane-parallel confinements We study numerically the reconfiguration process of colliding |m|=1/2 strength disclinations in an achiral nematic liquid crystal (NLC). A Landau–de Gennes approach in terms of tensor nematic-order parameters is used. Initially, different pairs {m1,m2} of parallel wedge disclination lines connecting opposite substrates confining the NLC in a plane-parallel cell of a thickness h are imposed: {1/2,1/2}, {−1/2,−1/2} and {−1/2,1/2}. The collisions are imposed by the relative rotation of the azimuthal angle θ of the substrates that strongly pin the defect end points. Pairs {1/2,1/2} and {−1/2,−1/2} “rewire” at the critical angle θ(1)c=3π/4 in all cases studied. On the other hand, two qualitatively different scenarios are observed for {−1/2,1/2}. In the thinner film regime ℎ<ℎc, the disclinations rewire at θ(2)c=5π/4. The rewiring process is mediated by an additional chargeless loop nucleated in the middle of the cell. In the regime ℎ>ℎc, the colliding disclinations at θ(2)c reconfigure into boojum-like twist disclinations. liquid crystals topological defects disclinations reconfiguration tekoči kristali topologija topološki defekti disklinacije rekonfiguracije true true true MDPI Angleški jezik Slovenski jezik Članek v reviji 2024-03-28 08:15:08 2024-03-28 08:46:14 2024-07-26 13:26:05 0000-00-00 00:00:00 2023 0 0 Str. 1-11 Št. 6, št. članka 904 Letn. 13 Jun. 2023 0000-00-00 Zaloznikova Objavljeno NiDoloceno 2023-04-20 2023-05-27 2023-06-01 532.783 156823043 10.3390/cryst13060904 2073-4352 Harkai-2023-Reconfiguration_of_Nematic_Disclin.pdf Harkai-2023-Reconfiguration_of_Nematic_Disclin.pdf 1 4F116EDB704104D49F1B6532B01DAC63 bf77cd28fcff5603e3972c4b978f2d5d1578aa955bcad6b4177e6de2959e45be 0b5dbdb0-ecd7-11ee-9311-00155d000105 https://dk.um.si/Dokument.php?lang=slv&id=177481 https://doi.org/10.3390/cryst13060904 0 1bf48179-ecd7-11ee-9311-00155d000105 https://dk.um.si/Dokument.php?lang=slv&id=177482 Fakulteta za naravoslovje in matematiko 0 0 0