Effects of fullerene addition on the thermo-optical properties of smectic liquid crystals at the vicinity of the nematic-smectic-A phase transition

被引：6
|
作者：
Omena, Lidiane [1 ]
de Melo, Pedro B. [1 ]
Pereira, Maria S. S. [1 ]
de Oliveira, Italo N. [1 ]
机构：
[1] Univ Fed Alagoas, Inst Fis, BR-57072970 Maceio, AL, Brazil
来源：
PHYSICAL REVIEW E | 2014年 / 89卷 / 05期
关键词：
THERMAL-CONDUCTIVITY; CRITICAL-BEHAVIOR; HEAT-TRANSPORT; DIFFUSIVITY; ANISOTROPY; RANGE;
D O I：
10.1103/PhysRevE.89.052511
中图分类号：
O35 [流体力学]; O53 [等离子体物理学];
学科分类号：
070204 ; 080103 ; 080704 ;
摘要：
The present work is devoted to the study of the thermo-optical properties of liquid crystals doped with traces of fullerene C-60 at the vicinity of the nematic-smectic-A phase transition. By using the time-resolved Z-scan technique, we measure the temperature dependence of the thermo-optical coefficient and the thermal diffusivity. Our results reveal that the critical behavior of the thermal diffusivity is strongly affected by the fullerene addition. We provide a detailed discussion under the light of the distinct mechanisms behind the thermal transport in liquid-crystal samples.
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页数：6
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