Light scattering measurements in the 7-barS5-8OCB nematic-smectic-A-smectic-C liquid crystal system.
Light scattering measurements in the 7-barS5-8OCB nematic-smectic-A-smectic-C liquid crystal system.
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7-barS5-8OCB 向列-近晶-A-近晶-C 液晶系统中的光散射测量。
DOI：
10.1103/physrevlett.56.2268
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发表时间：
1986
影响因子：
8.6
通讯作者：
Litster
中科院分区：
文献类型：
--
作者：
Solomon;Litster
我们报道了7S5-8OCB系统中向列相-近晶-A-近晶-C多临界点附近向列相指向矢的光散射测量。我们的数据分析修正了相界曲率的影响，并阐明了向列相-近晶-A-近晶-C点从多临界点的N-−S A和N-−S C侧靠近时的临界行为的演变。所得结果与X射线散射数据非常吻合，弯曲弹性常数行为与目前的任何理论预测都不同。
We report light-scattering measurements of nematic director fluctuations near the nematic-smectic-A-smectic-C multicritical point in the 7S5-8OCB system. Our data analysis corrects for the effects of phase-boundary curvature and elucidates the evolution in the critical behavior as the nematic-smectic-A-smectic-C point is approached from both the N− S A and N− S C side of the multicritical point. The results agree closely with x-ray scattering data and the bend elastic-constant behavior differs from any current theoretical predictions.