Electrically switchable birefringent self-assembled nanocomposites: ferroelectric liquid crystal doped with the multiwall carbon nanotubes

0535203 - FZÚ 2021 RIV GB eng J - Journal Article
Shukla, R.K. - Chaudhary, A. - Bubnov, Alexej - Hamplová, Věra - Raina, K.K.
Electrically switchable birefringent self-assembled nanocomposites: ferroelectric liquid crystal doped with the multiwall carbon nanotubes.
Liquid Crystals. Roč. 47, č. 9 (2020), s. 1379-1389. ISSN 0267-8292. E-ISSN 1366-5855
R&D Projects: GA MŠMT LTC19051; GA ČR GA18-14497S
Institutional support: RVO:68378271
Keywords : ferroelectric liquid crystal * multi-walled carbon nanotubes * nanocomposite * self-assembling * electro-optic properties * anchoring energy
OECD category: Materials engineering
Impact factor: 2.908, year: 2019
Method of publishing: Limited access
https://doi.org/10.1080/02678292.2020.1720328

Functional nanocomposites are designed via doping ferroelectric liquid crystal (FLC) matrix by 0.03wt% and 0.1wt% of functionalized multiwall carbon nanotubes (MWCNTs). Mesomorphic, optical and electro-optic behaviour of resulting nanocomposites were studied. FLC material demonstrates electrically switchable birefringence colours under applied electric field at different temperatures. No considerable perturbation of FLC smectic order has been observed in dependence of MWCNTs doping. However, the MWCNT doping strongly modifies the optical contrast, birefringence, transmission and contrast ratio of the FLC material. Furthermore, doping by MWCNTs leads to generation of new colours in the nanocomposite systems and also effectively reduce the driving voltage for the colour appearance. Such electrically switchable birefringent MWCNTs/FLC nanocomposites can be effectively utilised for the field-sequential colour displays, FLC switches, optoelectronic and photonics devices.
Permanent Link: http://hdl.handle.net/11104/0313322