Electro-optic and dielectric properties of new binary ferroelectric and antiferroelectric liquid crystalline mixtures
Result description
Several new binary liquid crystalline mixtures have been designed and their properties were studied by complementary methods. It has been shown that even both pure components used for the mixture design possess the ferroelectric behaviour, the induced antiferroelectric smectic phase has been detected for one of the prepared mixtures. The phase diagram has been constructed and the existence of the antiferroelectric phase was confirmed by switching time and dielectric spectroscopy measurements. Some of the resulted mixtures possess very high values of the tilt angle that reaches close below 45 degrees degrees at saturation. Values of spontaneous polarisation were found within 50-200nC/cm(2) in dependence of the mixture's composition. Due to specific properties, the obtained mixtures might be interesting for further design of multicomponent mixtures and formulation of the advanced nanocomposite systems.
Keywords
liquid crystalsferroelectric and antiferroelectric phasebinary mixturedielectric spectroscopyswitching timetilt angle
The result's identifiers
Result code in IS VaVaI
Result on the web
DOI - Digital Object Identifier
Alternative languages
Result language
angličtina
Original language name
Electro-optic and dielectric properties of new binary ferroelectric and antiferroelectric liquid crystalline mixtures
Original language description
Several new binary liquid crystalline mixtures have been designed and their properties were studied by complementary methods. It has been shown that even both pure components used for the mixture design possess the ferroelectric behaviour, the induced antiferroelectric smectic phase has been detected for one of the prepared mixtures. The phase diagram has been constructed and the existence of the antiferroelectric phase was confirmed by switching time and dielectric spectroscopy measurements. Some of the resulted mixtures possess very high values of the tilt angle that reaches close below 45 degrees degrees at saturation. Values of spontaneous polarisation were found within 50-200nC/cm(2) in dependence of the mixture's composition. Due to specific properties, the obtained mixtures might be interesting for further design of multicomponent mixtures and formulation of the advanced nanocomposite systems.
Czech name
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Czech description
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Classification
Type
Jimp - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
21001 - Nano-materials (production and properties)
Result continuities
Project
Result was created during the realization of more than one project. More information in the Projects tab.
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)
Others
Publication year
2017
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Liquid Crystals
ISSN
0267-8292
e-ISSN
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Volume of the periodical
44
Issue of the periodical within the volume
9
Country of publishing house
GB - UNITED KINGDOM
Number of pages
9
Pages from-to
1468-1476
UT code for WoS article
000407515700014
EID of the result in the Scopus database
2-s2.0-85011298651
Basic information
Result type
Jimp - Article in a specialist periodical, which is included in the Web of Science database
OECD FORD
Nano-materials (production and properties)
Year of implementation
2017