20.500.12556/DKUM-66956 Curvature-controlled topological defects Effectively, two-dimensional (2D) closed films exhibiting in-plane orientational ordering (ordered shells) might be instrumental for the realization of scaled crystals. In them, ordered shells are expected to play the role of atoms. Furthermore, topological defects (TDs) within them would determine their valence. Namely, bonding among shells within an isotropic liquid matrix could be established via appropriate nano-binders (i.e., linkers) which tend to be attached to the cores of TDs exploiting the defect core replacement mechanism. Consequently, by varying configurations of TDs one could nucleate growth of scaled crystals displaying different symmetries. For this purpose, it is of interest to develop a simple and robust mechanism via which one could control the position and number of TDs in such atoms. In this paper, we use a minimal mesoscopic model, where variational parameters are the 2D curvature tensor and the 2D orientational tensor order parameter. We demonstrate numerically the efficiency of the effective topological defect cancellation mechanism to predict positional assembling of TDs in ordered films characterized by spatially nonhomogeneous Gaussian curvature. Furthermore, we show how one could efficiently switch among qualitatively different structures by using a relative volume v of ordered shells, which represents a relatively simple naturally accessible control parameter. topological defects Gaussian curvature self-assembling crystal growth nucleation topološki defekti Gaussova ukrivljenost samourejanje tvorba in rast kristalov true true true MDPI AG Angleški jezik Slovenski jezik Znanstveno delo 2017-07-20 12:45:35 2017-07-20 12:59:48 2026-01-13 12:51:41 2019-07-11 15:08:29 0 0 0 Str. 1-11 št. 6 Letn. 7 2017 0000-00-00 Zaloznikova Objavljeno NiDoloceno 2017-04-18 2017-05-23 2017-05-25 2073-4352 548/549 36677893 11753556 10.3390/cryst7060153 2073-4352 URN:SI:UM:DK:BQXPYY0U Crystals_2017_Mesarec_et_al._Curvature-Controlled_Topological_Defects.pdf Crystals_2017_Mesarec_et_al._Curvature-Controlled_Topological_Defects.pdf 1 27B85BC5F17AE9D1A365662B0A0193FD be1e696819b390b9355dcbdddd1b1ac895f74731b7d88b5091b85a310050f21f 6fc741ad-7c0e-11eb-bb7a-00155d0001ca 20.500.12556/dkum/3ca58505-ca08-4f1c-9190-29a80129a36f https://dk.um.si/Dokument.php?lang=slv&id=114402 http://www.mdpi.com/2073-4352/7/6/153 1 https://dk.um.si/Dokument.php?lang=slv&id=114401 Fakulteta za naravoslovje in matematiko 0 0 0