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Toplam kayıt 9, listelenen: 1-9
Refractive and birefringent properties of 4-alkyl-4 '-oxycyanobiphenyls at direct and reverse phase transitions
(Taylor & Francis Ltd, 2017)
Studies of temperature behavior of the mean refractive index, ordinary and extraordinary refractive indices, and birefringence have been carried out for three nematogens. The thermo-morphologic properties of the biphasic ...
Investigation of the viscoelastic properties of 4-propoxy-biphenyl-4-carbonitrile
(Taylor & Francis Ltd, 2019)
We report on the temperature-dependent measurements of dielectric permittivity, birefringence, elastic constants and rotational viscosity for 4-propoxy-biphenyl-4-carbonitrile in the nematic region. The temperature dependence ...
Refractive and birefringent properties and order parameter of nematic liquid crystal at the direct and reverse nematic <-> isotropic liquid phase transition
(Natl Inst Optoelectronics, 2016)
Temperature dependences of the refractive indices, birefringence and molecular polarizability in large temperature interval and especially in the region of the direct nematic mesophase - isotropic liquid (for the heating ...
Peculiarities of thermo-morphologic and thermotropic transformations of heterophase regions: nematic <-> isotropic phase transition in 4-n-Alkyl-4 '-cyanobiphenyl mesogens
(Natl Inst Optoelectronics, 2019)
Important peculiarity of phase transitions in liquid crystalline materials is availability of the heterophase regions, in which low temperature and high temperature phases simultaneously take place. In this work, peculiarities ...
Analogy between periodic patterns in thin smectic liquid crystal films and the intermediate state of superconductors
(Natl Acad Sciences, 2020)
Spontaneous breaking of symmetry in liquid crystal (LC) films often reveals itself as a microscopic pattern of molecular align-ment. In a smectic-A LC, the emergence of positional order at the transition from the nematic ...
Production and characterization of liquid crystal/polyacrylonitrile nano-fibers by electrospinning method
(Springer Link, 2021)
We present that high birefringent nematic liquid crystal, 4-n-pentyl-4'-cyanobiphenyl, was incorporated into the polyacrylonitrile precursor which has a strong polar cyano group so as to produce electrospun nano-fibers, ...
Electrospun fibers of liquid crystal mixtures
(SPRINGER, 2022)
Electrospinning is a powerful and promising technique in production of nano-materials namely nano-fibers. Nano-sized materials show properties apart from their macroscopic/bulk sizes, and enable us to fabricate materials ...
Electrochemical Properties of Coumarin 500 Encapsulated in a Liquid Crystal Guided Electrospun Fiber Core and Their Supercapacitor Application
(AMER CHEMICAL SOC, 2022)
Here, we first report a study on coumarin 500 and liquid crystal including polyacrylonitrile nanofibers in terms of synthesis, characterizations, and supercapacitor performances. SEM, POM, FTIR, and DSC measurements showed ...
A comparative study on electrospun fibers of cyanobiphenyl liquid crystal homologues
(TAYLOR & FRANCIS INC, 2023)
Cyanobiphenyl homologues are important liquid crystals to use in some applications since they exhibit intrinsic properties in a certain temperature interval including room temperature. Recently, generating composites with ...