Electrooptics of mm-scale polar domains in the ferroelectric nematic phase

Sebastián Ugarteche, Nerea (avtor), Mandle, Richard J. (avtor), Petelin, Andrej (avtor), Eremin, Alexey (avtor), Mertelj, Alenka (avtor)

The recent discovery of the ferroelectric nematic phase has opened the door to experimental investigation of one of the most searched liquid crystal phases in decades, with high expectations for future applications. However, at this moment, there are more questions than answers. In this work, we examine the formation and structure of large polar nematic domains of the ferroelectric nematic material RM734 in planar liquid crystals cells with different aligning agents and specifications. We observe that confining surfaces have a strong influence over the formation of different types of domains, resulting in various twisted structures of the nematic director. For those cells predominantly showing mm-scale domains, we investigate the optical and second harmonic generation switching behaviour under applications of electric fields with a special focus on inplane fields perpendicular to the confinement media rubbing direction. In order to characterise the underlying structure, the polar optical switching behaviour is reproduced using a simplified model together with Berreman calculations.

• Jezik: Angleški jezik
• Ključne besede: polar nematic, ferroelectric splay nematic, surface effects, electro-optic behaviour, second harmonic generation
• Vrsta gradiva: Članek v reviji
• Tipologija: 1.01 - Izvirni znanstveni članek
• Organizacija: FMF - Fakulteta za matematiko in fiziko
• Status publikacije: Objavljeno
• Različica publikacije: Objavljena publikacija
• Leto izida: 2021
• Št. strani: Str. 2055-2071
• Številčenje: Vol. 48, no. 14
• PID: 20.500.12556/RUL-141236
• UDK: 53
• ISSN pri članku: 0267-8292
• DOI: 10.1080/02678292.2021.1955417
• COBISS.SI-ID: 73124867
• Datum objave v RUL: 26.09.2022

Gradivo je del revije

• Naslov: Liquid crystals
• Skrajšan naslov: Liq. cryst.
• Založnik: Taylor & Francis
• ISSN: 0267-8292
• COBISS.SI-ID: 1690628

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.