Naslov: | Curvature-controlled topological defects |
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Avtorji: | ID Mesarec, Luka (Avtor) ID Kurioz, Pavlo (Avtor) ID Iglič, Aleš (Avtor) ID Góźdź, Wojciech (Avtor) ID Kralj, Samo (Avtor) |
Datoteke: | 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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Jezik: | Angleški jezik |
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Vrsta gradiva: | Znanstveno delo |
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Tipologija: | 1.01 - Izvirni znanstveni članek |
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Organizacija: | FNM - Fakulteta za naravoslovje in matematiko
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Opis: | 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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Ključne besede: | topological defects, Gaussian curvature, self-assembling, crystal growth nucleation |
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Status publikacije: | Objavljeno |
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Verzija publikacije: | Objavljena publikacija |
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Št. strani: | str. 1-11 |
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Številčenje: | 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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UDK: | 548/549 |
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COBISS.SI-ID: | 11753556  |
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DOI: | 10.3390/cryst7060153  |
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ISSN pri članku: | 2073-4352 |
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NUK URN: | URN:SI:UM:DK:BQXPYY0U |
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Datum objave v DKUM: | 20.07.2017 |
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Število ogledov: | 1288 |
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Število prenosov: | 470 |
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Metapodatki: |  |
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Področja: | Ostalo
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