Scaling analysis of the concentration dependence on elasticity of agarose gel

被引：19

作者：

Fujii, T ^{[1
]}

Yano, T ^{[1
]}

Kumagai, H ^{[1
]}

Miyawaki, O ^{[1
]}

机构：

[1] Univ Tokyo, Dept Appl Biol Chem, Bunkyo Ku, Tokyo 1138657, Japan

来源：

BIOSCIENCE BIOTECHNOLOGY AND BIOCHEMISTRY | 2000年 / 64卷 / 08期

关键词：

agarose gel; percolation; correlation length; dynamic shear modulus; scaling law;

D O I：

10.1271/bbb.64.1618

中图分类号：

Q5 [生物化学]; Q7 [分子生物学];

学科分类号：

071010 ; 081704 ;

摘要：

Since the critical exponent of the elastic modulus is related to the spatial dimension and the critical exponent of the correlation length, depending on the characteristics of elasticity; we experimentally evaluated both the elastic modulus of a sol-gel transition system and also the correlation length. We could determine the correlation length of agarose gel by the dynamic light scattering method; it was well described by the power law as a function of the deviation from the sol-gel transition point. Three scaling laws between the critical exponent of the correlation length (v) and that of the elastic shear modulus (t) were compared, and the critical exponent of the elastic modulus was described by the equation of de Gennes expression (t=1+ v(d-2), where d is the spatial dimension). This result suggests that agarose fibers are stiff enough to show scalar elasticity.

引用

页码：1618 / 1622

页数：5

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