Viscosity and lubricity of aqueous NaCl solution confined between mica surfaces studied by shear resonance measurement
Viscosity and lubricity of aqueous NaCl solution confined between mica surfaces studied by shear resonance measurement
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DOI：
10.1103/physrevlett.96.046104
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发表时间：
2006-02-03
影响因子：
8.6
通讯作者：
Kurihara, K
中科院分区：
文献类型：
--
作者：
Sakuma, H;Otsuki, K;Kurihara, K
我们报道了用剪切共振仪测量的限制在云母表面之间的氯化钠水溶液薄膜的粘弹性。在间距小于约100 μ m处观察到剪切共振曲线。2 nm的润滑效果表明，该溶液在一定载荷下具有较好的润滑效果。从力学模型中获得的分离小于1 nm的有效粘度（0.1-10 Pa·s）比本体值大2-4个数量级。我们的研究采用了一种新的剪切测量提供了一个全面的图片的动态承压水薄于几个纳米。
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.