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Naslov:Stable assemblies of topological defects in nematic orientational order
Avtorji:ID Hölbl, Arbresha (Avtor)
ID Mesarec, Luka (Avtor)
ID Polanšek, Juš (Avtor)
ID Iglič, Aleš (Avtor)
ID Kralj, Samo (Avtor)
Datoteke:URL https://pubs.acs.org/doi/10.1021/acsomega.2c07174#
 
Jezik:Angleški jezik
Vrsta gradiva:Članek v reviji
Tipologija:1.01 - Izvirni znanstveni članek
Organizacija:FNM - Fakulteta za naravoslovje in matematiko
Opis:We considered general mechanisms enabling the stabilization of localized assemblies of topological defects (TDs). There is growing evidence that physical fields represent fundamental natural entities, and therefore these features are of interest to all branches of physics. In general, cores of TDs are energetically costly, and consequently, assemblies of TDs are unfavorable. Owing to the richness of universalities in the physics of TDs, it is of interest to identify systems where they are easily experimentally accessible, enabling detailed and well-controlled analysis of their universal behavior, and cross-fertilizing knowledge in different areas of physics. In this respect, thermotropic nematic liquid crystals (NLCs) represent an ideal experiment testbed for such studies. In addition, TDs in NLCs could be exploited in several applications. We present examples that emphasize the importance of curvature imposed on the phase component of the relevant order parameter field. In NLCs, it is represented by the nematic tensor order parameter. Using a simple Landau-type approach, we show how the coupling between chirality and saddle splay elasticity, which can be expressed as a Gaussian curvature contribution, can stabilize Meron TDs. The latter have numerous analogs in other branches of physics. TDs in 2D curved manifolds reveal that the Gaussian curvature dominantly impacts the assembling and stabilization of TDs. Furthermore, a strong enough curvature that serves as an attractor for TDs is a respective field that could be imposed in a fast enough phase transition. Assemblies of created TDs created in such a disordered environment could be stabilized by appropriate impurities.
Ključne besede:topological defects, nematic liquid crystals, Gaussian curvature, topological charge
Status publikacije:Objavljeno
Verzija publikacije:Objavljena publikacija
Datum objave:01.01.2023
Leto izida:2023
Št. strani:169-179
Številčenje:Vol. 8, iss. 1
PID:20.500.12556/DKUM-84744 Novo okno
UDK:532.783
COBISS.SI-ID:137430275 Novo okno
DOI:10.1021/acsomega.2c07174 Novo okno
ISSN pri članku:2470-1343
Datum objave v DKUM:17.07.2023
Število ogledov:278
Število prenosov:8
Metapodatki:XML RDF-CHPDL DC-XML DC-RDF
Področja:Ostalo
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Vaša ocena:Ocenjevanje je dovoljeno samo prijavljenim uporabnikom.
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Gradivo je del revije

Naslov:ACS omega
Skrajšan naslov:ACS omega
Založnik:American Chemical Society
ISSN:2470-1343
COBISS.SI-ID:525873945 Novo okno

Gradivo je financirano iz projekta

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

Financer:ARRS - Agencija za raziskovalno dejavnost Republike Slovenije
Številka projekta:J1-2457
Naslov:Fazni prehodi proti koordinaciji v večplastnih omrežjih

Financer:ARRS - Agencija za raziskovalno dejavnost Republike Slovenije
Številka projekta:J2-4447
Naslov:Vpliv mehanike in topologije membrane na celično ujetje bakterij, virionov in anorganskih delcev

Licence

Licenca:CC BY-NC-ND 4.0, Creative Commons Priznanje avtorstva-Nekomercialno-Brez predelav 4.0 Mednarodna
Povezava:http://creativecommons.org/licenses/by-nc-nd/4.0/deed.sl
Opis:Najbolj omejujoča licenca Creative Commons. Uporabniki lahko prenesejo in delijo delo v nekomercialne namene in ga ne smejo uporabiti za nobene druge namene.

Sekundarni jezik

Jezik:Slovenski jezik
Ključne besede:topološki defekti, nematski tekoči kristali, Gaussova ukrivljenost, topološki naboj


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