Microscopic Description of the Dielectric Experiment of Some Liquid Crystals

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概要

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• Dielectric properties measure the collective response of a charge-free system to an applied electric field, and are a probe of molecular polarizability, dipole moment and the internal field in the anisotropic media. Interactions between dipoles cannot be discounted in the molecular interpretation of the dielectric properties of liquid crystals. So, the theories for these properties are more complicated than for magnetic or optical properties. This paper presents comparison of the predictions of the Nordio–Rigatti–Segre theory with the results of the broadband dielectric studies of the dielectric relaxation processes of a few macroscopically oriented liquid crystals. Using the quantum chemical program MOPAC/7, with the AM1 Hamiltonian a few essential values have to be calculated in advance. Moreover a new procedure for the calculation of the order parameter has been proposed.

• Published by the Japan Society of Applied Physics through the Institute of Pure and Applied Physicsの論文
• 2005-10-15

著者

• Demus Dietrich

  International Scientific Consulting Office, Veilchenweg 22, 06118 Halle, Germany

• Otowski Wojciech

  Institute of Physics, Cracow University of Technology, Podchorazych 1, 30-084 Kraków, Poland

• Biernat Agnieszka

  Institute of Physics, Cracow University of Technology, Podchorazych 1, 30-084 Kraków, Poland

• Otowski Wojciech

  Institute of Physics, Cracow University of Technology, Podchorazych 1, 30-084 Kraków, Poland

• Biernat Agnieszka

  Institute of Physics, Cracow University of Technology, Podchorazych 1, 30-084 Kraków, Poland

関連論文

• Microscopic Description of the Dielectric Experiment of Some Liquid Crystals

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