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Title:Curvature-controlled topological defects
Authors:ID Mesarec, Luka (Author)
ID Kurioz, Pavlo (Author)
ID Iglič, Aleš (Author)
ID Góźdź, Wojciech (Author)
ID Kralj, Samo (Author)
Files:.pdf Crystals_2017_Mesarec_et_al._Curvature-Controlled_Topological_Defects.pdf (6,77 MB)
MD5: 27B85BC5F17AE9D1A365662B0A0193FD
PID: 20.500.12556/dkum/3ca58505-ca08-4f1c-9190-29a80129a36f
 
URL http://www.mdpi.com/2073-4352/7/6/153
 
Language:English
Work type:Scientific work (r2)
Typology:1.01 - Original Scientific Article
Organization:FNM - Faculty of Natural Sciences and Mathematics
Abstract: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.
Keywords:topological defects, Gaussian curvature, self-assembling, crystal growth nucleation
Publication status in journal:Published
Article version:Publisher's version of article
Number of pages:str. 1-11
Numbering:Letn. 7, št. 6
PID:20.500.12556/DKUM-66956 New window
ISSN:2073-4352
UDC:548/549
ISSN on article:2073-4352
COBISS.SI-ID:11753556 New window
DOI:10.3390/cryst7060153 New window
NUK URN:URN:SI:UM:DK:BQXPYY0U
Publication date in DKUM:20.07.2017
Views:883
Downloads:394
Metadata:XML RDF-CHPDL DC-XML DC-RDF
Categories:Misc.
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Record is a part of a journal

Title:Crystals
Shortened title:Crystals
Publisher:MDPI
ISSN:2073-4352
COBISS.SI-ID:36677893 New window

Document is financed by a project

Funder:ARRS - Agencija za raziskovalno dejavnost Republike Slovenije
Project number:P1-0099
Name:Fizika mehkih snovi, površin in nanostruktur

Licences

License:CC BY 4.0, Creative Commons Attribution 4.0 International
Link:http://creativecommons.org/licenses/by/4.0/
Description:This is the standard Creative Commons license that gives others maximum freedom to do what they want with the work as long as they credit the author.
Licensing start date:20.07.2017

Secondary language

Language:Slovenian
Keywords:topološki defekti, Gaussova ukrivljenost, samourejanje, tvorba in rast kristalov


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