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
false
true
Angleški jezik
Slovenski jezik
Znanstveno delo
2017-07-20 12:45:35
2017-07-20 12:59:48
2022-08-01 13:23:17
2019-07-11 15:08:29
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0
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str. 1-11
št. 6
Letn. 7
2017
0000-00-00
Zaloznikova
Objavljeno
NiDoloceno
0000-00-00
0000-00-00
0000-00-00
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
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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
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