Viscosity and lubricity of aqueous NaCl solution confined between mica surfaces studied by shear resonance measurement

被引：127

作者：

Sakuma, H

Otsuki, K

Kurihara, K

机构：

[1] Tohoku Univ, Inst Multidisciplinary Res Adv Mat, Aoba Ku, Sendai, Miyagi 9808577, Japan

[2] JST, CREST, Aoba Ku, Sendai, Miyagi 9808577, Japan

[3] Tohoku Univ, Grad Sch Sci, Inst Geol & Palaeontol, Aoba Ku, Sendai, Miyagi 9808578, Japan

来源：

PHYSICAL REVIEW LETTERS | 2006年 / 96卷 / 04期

关键词：

D O I：

10.1103/PhysRevLett.96.046104

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We report the viscoelasticity of the thin film of aqueous NaCl solution confined between mica surfaces measured by shear resonance apparatus. The observed shear resonance curves at separations less than ca. 2 nm indicated that the solution exhibits the high lubrication effects under some loads. The effective viscosity (0.1-10 Pa s) obtained for the separations less than 1 nm from a mechanical model was 2-4 orders of magnitude larger than the bulk value. Our study employing a novel shear measurement provided a comprehensive picture for the dynamics of confined water thinner than a few nanometers.

引用

页数：4