Biaxial structures of localized deformations and line-like distortions in effectively 2D nematic films

Mesarec, Luka (avtor), Kralj, Samo (avtor), Iglič, Aleš (avtor)

We numerically studied localized elastic distortions in curved, effectively two-dimensional nematic shells. We used a mesoscopic Landau-de Gennes-type approach, in which the orientational order is theoretically considered by introducing the appropriate tensor nematic order parameter, while the three-dimensional shell shape is described by the curvature tensor. We limited our theoretical consideration to axially symmetric shapes of nematic shells. It was shown that in the surface regions of stomatocyte-class nematic shell shapes with large enough magnitudes of extrinsic (deviatoric) curvature, the direction of the in-plane orientational ordering can be mutually perpendicular above and below the narrow neck region. We demonstrate that such line-like nematic distortion configurations may run along the parallels (i.e., along the circular lines of constant latitude) located in the narrow neck regions of stomatocyte-like nematic shells. It was shown that nematic distortions are enabled by the order reconstruction mechanism. We propose that the regions of nematic shells that are strongly elastically deformed, i.e., topological defects and line-like distortions, may attract appropriately surface-decorated nanoparticles (NPs), which could potentially be useful for the controlled assembly of NPs.

• Jezik: Angleški jezik
• Ključne besede: nematic shells, orientational order, topological defects, stomatocytes, order reconstruction mechanism
• Vrsta gradiva: Članek v reviji
• Tipologija: 1.01 - Izvirni znanstveni članek
• Organizacija: FE - Fakulteta za elektrotehniko
• Status publikacije: Objavljeno
• Različica publikacije: Objavljena publikacija
• Leto izida: 2024
• Št. strani: 14 str.
• Številčenje: Vol. 14, issue 3, art. 246
• PID: 20.500.12556/RUL-173585
• UDK: 544.252.22
• ISSN pri članku: 2079-4991
• DOI: 10.3390/nano14030246
• COBISS.SI-ID: 183558659
• Datum objave v RUL: 18.09.2025

Gradivo je del revije

• Naslov: Nanomaterials
• Skrajšan naslov: Nanomaterials
• Založnik: MDPI AG
• ISSN: 2079-4991
• COBISS.SI-ID: 523286297

Licence

• Licenca: CC BY 4.0, Creative Commons Priznanje avtorstva 4.0 Mednarodna
• Povezava: http://creativecommons.org/licenses/by/4.0/deed.sl
• Opis: To je standardna licenca Creative Commons, ki daje uporabnikom največ možnosti za nadaljnjo uporabo dela, pri čemer morajo navesti avtorja.

Sekundarni jezik

• Jezik: Slovenski jezik
• Ključne besede: nematične lupine, orientacijski red, topološki defekti, stomatociti, mehanizem rekonstrukcije orientacijskega reda