تقرير
Oblique helicoidal state of the twist-bend nematic doped by chiral azo-compound
| العنوان: | Oblique helicoidal state of the twist-bend nematic doped by chiral azo-compound |
|---|---|
| المؤلفون: | Chornous, Vitalii, Grozav, Alina, Vovk, Myhaylo, Bratova, Daria, Kasian, Natalia, Lisetski, Longin, Gvozdovskyy, Igor |
| سنة النشر: | 2023 |
| المجموعة: | Condensed Matter |
| مصطلحات موضوعية: | Condensed Matter - Soft Condensed Matter |
| الوصف: | A novel light-sensitive chiral dopant ChD-3816 (an azo compound containing 4-hexanoyloxyphenyl and 2-isopropyl-5-methylcyclohexylbenzoate moieties) was used for inducing helical twisting in Ntb-forming mixtures of CB7CB/CB6OCB with 5CB added to decrease the phase transition temperatures. The effects of ChD-3816 upon phase transition temperatures, as well as effects of its concentration on the measured values of helical twisting were determined. Most of the measured parameters could be varied due to light-induced trans-cis isomerization of ChD-3816. Under electric field, selective reflection spectra in the visible range were obtained for the emerging ChOH structures, with the wavelengths controllable both by electric field and appropriate UV irradiation. Possible applications for dynamic formation of contrast images are discussed. Comment: 39 pages, 32 figures |
| نوع الوثيقة: | Working Paper |
| URL الوصول: | http://arxiv.org/abs/2303.02642 |
| رقم الأكسشن: | edsarx.2303.02642 |
| قاعدة البيانات: | arXiv |
| الوصف غير متاح. |