0000000000924299

AUTHOR

R. Wrzalik

showing 2 related works from this author

Infrared absorption study of hexapentyloxytriphenylene A discotic liquid crystal

1993

Abstract Fourier transform infrared absorption (FTIR) spectroscopy has been used to study a discotic liquid crystal. IR spectra are reported as a function of temperature for hexapentyloxytriphenyle...

Materials scienceDiscotic liquid crystalAnalytical chemistryInfrared spectroscopyAstrophysics::Cosmology and Extragalactic AstrophysicsGeneral ChemistryCondensed Matter PhysicsFourier transform spectroscopyCondensed Matter::Soft Condensed Mattersymbols.namesakeNuclear magnetic resonanceFourier transformLiquid crystalsymbolsGeneral Materials ScienceAstrophysics::Earth and Planetary AstrophysicsFourier transform infrared spectroscopySpectroscopyAstrophysics::Galaxy AstrophysicsLiquid Crystals
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Dielectric and electro-optical studies of a ferroelectric copolysiloxane.

1994

This paper reports an extensive study of the static (spontaneous polarization, ${\mathit{P}}_{\mathit{s}}$, tilt angle \ensuremath{\theta}, and pitch) and dynamic properties of a ferroelectric liquid-crystalline polymer. It is shown that a ferroelectric liquid-crystalline polymer (diluted polysiloxane) exhibits physical behavior similar to that of a low-molar-mass liquid crystal in terms of contrast ratio, pitch of the helix, and relationship between ${\mathit{P}}_{\mathit{s}}$ and \ensuremath{\theta}. The degenerated collective modes for the director rotation are shown to split into two modes at the Sm-A--Sm-${\mathit{C}}^{\mathrm{*}}$ phase transition temperature using dielectric spectros…

PhysicsStatistics::TheoryStatistics::ApplicationsCondensed matter physicsInverseSoft modesDielectricCoupling (probability)FerroelectricityDielectric spectroscopyCondensed Matter::Soft Condensed MatterNuclear magnetic resonanceLiquid crystalPhase (matter)Physical review. B, Condensed matter
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