1C11 電傾効果に及ぼす界面アンカリングエネルギーの影響 (2)

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In this study, we would like to report the experimental results and the numerical simulation on the electroclinic effect(EC), in the SmA of FLCs, TFMHPDOPB(Mitsubishi Petrochemical.) and 764E(Merck.). Firstly, we evaluated the values of Landau-coeffients for these FLC by measuring the molecular tilt angle and the displacement current. Then we calculated the temperature dependence of the dielectric constant, on a basis of the Landau-type static theory. Secondly, we calculated the dynamic EC response caused by the reorientational distribution, where the parameters evaluated by our measurement were used. In consequence, it was found that the dynamic molecular reorientational distribution is affected by the polar and/or non-polar surface anchoring strength. However, the effect of surface anchoring on the optical transmittance or dielectric response are not remarkable, therefore it seems to be impossible to estimate the surface anchoring strength experimentaly by the measurement of optical response or dielectric constant.
1995-09-10