Cholesteric phase in virus suspensions

被引：220
|
作者：
Dogic, Z [1 ]
Fraden, S [1 ]
机构：
[1] Brandeis Univ, Martin Fisher Sch Phys, Complex Fluids Grp, Waltham, MA 02454 USA
来源：
LANGMUIR | 2000年 / 16卷 / 20期
关键词：
D O I：
10.1021/la000446t
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
We report measurements of the cholesteric pitch and twist elastic constant (K(22)) in monodisperse suspensions of the rodlike virus filamentous bacteriophage fd. Measurements were taken for concentrations spanning the entire cholesteric region at several ionic strengths and temperatures. In the limit of high ionic strength the cholesteric pitch (P(0)) scales with concentration (c) as P(0) proportional to c(-1.66). As the ionic strength decreases, the scaling exponent systematically changes to lower values.
引用
收藏
页码：7820 / 7824
页数：5
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