Confinement Induced Splay-to-Bend Transition of Colloidal Rods

被引：44
|
作者：
Dammone, Oliver J. [1 ]
Zacharoudiou, Ioannis [2 ]
Dullens, Roel P. A. [1 ]
Yeomans, Julia M. [2 ]
Lettinga, M. P. [3 ]
Aarts, Dirk G. A. L. [1 ]
机构：
[1] Univ Oxford, Dept Chem, Phys & Theoret Chem Lab, Oxford OX1 3QZ, England
[2] Univ Oxford, Rudolf Peierls Ctr Theoret Phys, Oxford OX1 3NP, England
[3] Forschungszentrum Julich, Inst Festkorperforsch, D-52425 Julich, Germany
来源：
PHYSICAL REVIEW LETTERS | 2012年 / 109卷 / 10期
关键词：
Viruses;
D O I：
10.1103/PhysRevLett.109.108303
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
We study the nematic phase of rodlike fd-virus particles confined to channels with wedge-structured walls. Using laser scanning confocal microscopy we observe a splay-to-bend transition at the single particle level as a function of the wedge opening angle. Lattice Boltzmann simulations reveal the underlying origin of the transition and its dependence on nematic elasticity and wedge geometry. Our combined work provides a simple method to estimate the splay-to-bend elasticity ratios of the virus and offers a way to control the position of defects through the confining boundary conditions.
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页数：5
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