| Title: | Curvature-controlled topological defects |
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| Authors: | ID Mesarec, Luka (Author)
ID Kurioz, Pavlo (Author)
ID Iglič, Aleš (Author)
ID Góźdź, Wojciech (Author)
ID Kralj, Samo (Author) |
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| Files: |  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
 http://www.mdpi.com/2073-4352/7/6/153
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| Language: | English |
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| Work type: | Scientific work |
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| Typology: | 1.01 - Original Scientific Article |
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| Organization: | FNM - Faculty of Natural Sciences and Mathematics
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| 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. |
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| Keywords: | topological defects, Gaussian curvature, self-assembling, crystal growth nucleation |
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| Publication status: | Published |
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| Publication version: | Version of Record |
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| Number of pages: | str. 1-11 |
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| Numbering: | Letn. 7, št. 6 |
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| PID: | 20.500.12556/DKUM-66956  |
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| ISSN: | 2073-4352 |
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| UDC: | 548/549 |
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| ISSN on article: | 2073-4352 |
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| COBISS.SI-ID: | 11753556 |
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| DOI: | 10.3390/cryst7060153 |
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| NUK URN: | URN:SI:UM:DK:BQXPYY0U |
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| Publication date in DKUM: | 20.07.2017 |
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| Views: | 1288 |
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| Downloads: | 466 |
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| Metadata: |    |
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| Categories: | Misc.
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