Pregled bibliografske jedinice broj: 965610
Homeotropic alignment of mesogenic dimers in the nematic and twist-bend nematic phases
Homeotropic alignment of mesogenic dimers in the nematic and twist-bend nematic phases // 27th International Liquid Crystal Conference (ILCC 2018)
Kyoto, Japan, 2018. (predavanje, međunarodna recenzija, neobjavljeni rad, znanstveni)
CROSBI ID: 965610 Za ispravke kontaktirajte CROSBI podršku putem web obrasca
Naslov
Homeotropic alignment of mesogenic dimers in the nematic and twist-bend nematic phases
Autori
Meyer, C. ; Damême, G. ; Dokli, Irena ; Knežević, Anamarija ; Lesac, Andreja ; Antonova, K. ; Stoenescu, D ; Davidson, P. ; Dozov, I
Vrsta, podvrsta i kategorija rada
Sažeci sa skupova, neobjavljeni rad, znanstveni
Skup
27th International Liquid Crystal Conference (ILCC 2018)
Mjesto i datum
Kyoto, Japan, 22.07.2018. - 27.07.2018
Vrsta sudjelovanja
Predavanje
Vrsta recenzije
Međunarodna recenzija
Ključne riječi
twist-bend nematic phase ; homeotropic alignment
Sažetak
The recently discovered twist-bend nematic phase, NTB, has attracted much attention with its spontaneous bend distortion and short-pitch heliconical structure. Investigations of these materials from basic and applied perspectives require reliable surface alignments: planar and homeotropic. However, while planar alignment is common, no homeotropic alignment was achieved so far with NTB–forming dimers. Here, we report on the surface alignment of dimers belonging to the salicylaldimine homologous series and their mixtures. Good homeotropic alignment of these materials was obtained in both N and NTB phases with standard alignment layers We discuss the origin of these instabilities, which are not observed in a similar cell filled with a rod-shaped nematic. We also analyze the relation between the chemical structure of the bent-shaped molecule and its ability to align homeotropically.
Izvorni jezik
Engleski
Znanstvena područja
Fizika
POVEZANOST RADA
Projekti:
IP-2014-09-1525 - Kiralnost od akiralnih tekućih kristala (CALC) (Lesac, Andreja, HRZZ - 2014-09) ( CroRIS)
Ustanove:
Institut "Ruđer Bošković", Zagreb