Molecular-Scale Imaging of Water Near Charged Surfaces
Molecular-Scale Imaging of Water Near Charged Surfaces
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DOI：
10.1002/celc.201300063
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发表时间：
2014-02-11
期刊：
影响因子：
4
通讯作者：
Morgenstern, Karina
中科院分区：
文献类型：
--
作者：
Mehlhorn, Michael;Schnur, Sebastian;Morgenstern, Karina
采用扫描隧道显微镜和密度泛函理论相结合的方法研究了Cu（111）表面水分子在水双分子层上的取向。理论预测，电场的应用使吸附的水分子在离表面近一纳米的距离上重新定向。实验证明了这一预测。此外，在两层和三层有序层上的吸附过程有很大的不同。我们认为这些结果可以深入了解靠近电极的扩散层的行为。
The orientation of water molecules on water bilayers is investigated on Cu(111) by a combination of scanning tunneling microscopy and density functional theory. Theory predicts that the application of a field reorients the adsorbed water molecules at a distance of close to a nanometer from the surface. Experimental evidence is presented for this prediction. Furthermore, the process differs strongly between adsorption on two and on three ordered layers. We propose that these results give insight into the behavior of the diffusive layer close to electrodes.