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Naslov:Curvature-controlled topological defects
Avtorji:Mesarec, Luka (Avtor)
Kurioz, Pavlo (Avtor)
Iglič, Aleš (Avtor)
Góźdź, Wojciech (Avtor)
Kralj, Samo (Avtor)
Datoteke:.pdf Crystals_2017_Mesarec_et_al._Curvature-Controlled_Topological_Defects.pdf (6,77 MB)
 
URL http://www.mdpi.com/2073-4352/7/6/153
 
Jezik:Angleški jezik
Vrsta gradiva:Znanstveno delo (r2)
Tipologija:1.01 - Izvirni znanstveni članek
Organizacija:FNM - Fakulteta za naravoslovje in matematiko
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.
Ključne besede:topological defects, Gaussian curvature, self-assembling, crystal growth nucleation
Št. strani:str. 1-11
Številčenje:št. 6, Letn. 7
ISSN:2073-4352
UDK:548/549
URN:URN:SI:UM:DK:BQXPYY0U
COBISS_ID:11753556 Povezava se odpre v novem oknu
DOI:10.3390/cryst7060153 Povezava se odpre v novem oknu
ISSN pri članku:2073-4352
Licenca:CC BY 4.0
To delo je dosegljivo pod licenco Creative Commons Priznanje avtorstva 4.0 Mednarodna
Število ogledov:229
Število prenosov:120
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Gradivo je del revije

Naslov:Crystals
Skrajšan naslov:Crystals
Založnik:MDPI
ISSN:2073-4352
COBISS.SI-ID:36677893 Novo okno

Gradivo je financirano iz projekta

Financer:ARRS - Agencija za raziskovalno dejavnost Republike Slovenije (ARRS)
Številka projekta:P1-0099
Naslov:Fizika mehkih snovi, površin in nanostruktur

Sekundarni jezik

Jezik:Slovenski jezik
Ključne besede:topološki defekti, Gaussova ukrivljenost, samourejanje, tvorba in rast kristalov


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