Colloid-liquid-crystal composites: An unusual soft solid

被引:209
作者
Meeker, SP
Poon, WCK
Crain, J
Terentjev, EM
机构
[1] Univ Edinburgh, Dept Phys & Astron, Edinburgh EH9 3JZ, Midlothian, Scotland
[2] Univ Cambridge, Cavendish Lab, Cambridge CB3 0HE, England
来源
PHYSICAL REVIEW E | 2000年 / 61卷 / 06期
关键词
D O I
10.1103/PhysRevE.61.R6083
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
Mixing model colloidal particles with a thermotropic nematic liquid crystal results in a soft solid with significant storage modulus (G' similar to 10(3) - 10(5) Pa). The soft solid comprises a network of particle aggregates, formed by the exclusion of particles from emergent nematic domains as the mixture is cooled below the isotropic-nematic transition. The unusually high storage modulus of the colloid-liquid-crystal composites may be due to the local frustration of nematic order within the particle aggregates. The birefringent soft solid is potentially important as a switchable electro-optical material that can be readily handled and processed.
引用
收藏
页码:R6083 / R6086
页数:4
相关论文
共 14 条
[1]  
ANDERSON V, UNPUB
[2]  
[Anonymous], 1991, NATURAL HIST SELECTI
[3]   RANDOMLY CONSTRAINED ORIENTATIONAL ORDER IN POROUS-GLASS [J].
IANNACCHIONE, GS ;
CRAWFORD, GP ;
ZUMER, S ;
DOANE, JW ;
FINOTELLO, D .
PHYSICAL REVIEW LETTERS, 1993, 71 (16) :2595-2598
[4]   DEFECTS IN LIQUID-CRYSTALS [J].
KLEMAN, M .
REPORTS ON PROGRESS IN PHYSICS, 1989, 52 (05) :555-654
[5]   Topological defects and interactions in nematic emulsions [J].
Lubensky, TC ;
Pettey, D ;
Currier, N ;
Stark, H .
PHYSICAL REVIEW E, 1998, 57 (01) :610-625
[6]  
POULIN P, 1994, J PHYS II, V4, P1557, DOI 10.1051/jp2:1994217
[7]   Novel colloidal interactions in anisotropic fluids [J].
Poulin, P ;
Stark, H ;
Lubensky, TC ;
Weitz, DA .
SCIENCE, 1997, 275 (5307) :1770-1773
[8]   Direct measurement of colloidal forces in an anisotropic solvent [J].
Poulin, P ;
Cabuil, V ;
Weitz, DA .
PHYSICAL REVIEW LETTERS, 1997, 79 (24) :4862-4865
[9]   Inverted and multiple nematic emulsions [J].
Poulin, P ;
Weitz, DA .
PHYSICAL REVIEW E, 1998, 57 (01) :626-637
[10]   Dispersion of latex particles in a nematic solution .2. Phase diagram and elastic properties [J].
Raghunathan, VA ;
Richetti, P ;
Roux, D .
LANGMUIR, 1996, 12 (16) :3789-3792