Conservative and Dissipative Interactions of Ionic Liquids in Nanoconfinement

被引：16
|
作者：
Seddon, James R. T. [1 ]
机构：
[1] Univ Twente, MESA Inst Nanotechnol, NL-7500 AE Enschede, Netherlands
来源：
JOURNAL OF PHYSICAL CHEMISTRY C | 2014年 / 118卷 / 38期
关键词：
DOUBLE-LAYER; VISCOUS FLUIDS; INTERFACE; SURFACE; CAPACITORS; AU(111);
D O I：
10.1021/jp508336e
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
By applying a small-amplitude (similar to 200 pm) oscillation to an atomic force microscopy probe during force-distance spectroscopy we are able to separate the "resistance to squeeze" of an ionic liquid nanoconfined between the probe and a mica sheet into its conservative and dissipative components. The interaction stiffness of the ionic liquid increases to a solid-like value as the mica is approached, while the "effective local viscosity" dramatically increases above the bulk value due to adjacent layers of ion-pairs interlocking as they slide over each other.
引用
收藏
页码：22197 / 22201
页数：5
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