publication . Article . 2014

Flexoelectricity in an oxadiazole bent-core nematic liquid crystal

Kaur, S; Panov, VP; Greco, C; Ferrarini, A; Görtz, V; Goodby, JW; Gleeson, HF;
Open Access
  • Published: 02 Dec 2014
  • Publisher: AIP
Abstract
We have determined experimentally the magnitude of the difference in the splay and bend flexoelectric coefficients, |e 1 − e 3|, of an oxadiazole bent-core liquid crystal by measuring the critical voltage for the formation of flexodomains together with their wave number. The coefficient |e 1 − e 3| is found to be a factor of 2–3 times higher than in most conventional calamitic nematic liquid crystals, varying from 8 pCm−1 to 20 pCm−1 across the ∼60 K—wide nematic regime. We have also calculated the individual flexoelectric coefficients e 1 and e 3, with the dipolar and quadrupolar contributions of the bent-core liquid crystal by combining density functional theo...
Subjects
arxiv: Condensed Matter::Soft Condensed Matter
Funded by
RCUK| Liquid Crystals (LCs) at Various Wavelengths of Light
Project
  • Funder: Research Council UK (RCUK)
  • Project Code: EP/D055261/1
  • Funding stream: EPSRC
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publication . Article . 2014

Flexoelectricity in an oxadiazole bent-core nematic liquid crystal

Kaur, S; Panov, VP; Greco, C; Ferrarini, A; Görtz, V; Goodby, JW; Gleeson, HF;