Solvation and squeeze out of hexadecane on graphite.
Solvation and squeeze out of hexadecane on graphite.
复制标题
溶剂化并挤出十六烷在石墨上。
DOI：
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发表时间：
2007
影响因子：
4.4
通讯作者：
Sean J. O’Shea
中科院分区：
文献类型：
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作者：
N. Gosvami;S. Sinha;W. Hofbauer;Sean J. O’Shea
我们进行了同时的力和电导率测量十六烷液体之间的导电原子力显微镜针尖和石墨表面。电流和力的数据都揭示了表面附近的十六烷的离散溶剂化分层。我们通常观察到，电流不以简单的方式随负载变化，因为最接近表面的层被压缩，但是在材料从尖端-样品间隙排出之前显著增加。我们推断，即使是纳米级的粗糙有构象变化的限制十六烷下的尖端顶点之前挤出的分子。
We have performed simultaneous force and conductivity measurement of hexadecane liquid confined between a conducting atomic force microscope tip and a graphite surface. Both the current and the force data reveal discrete solvation layering of the hexadecane near the surface. We typically observe that the current does not vary with load in a simple way as the layer closest to the surface is compressed, but increases markedly prior to the expulsion of material from the tip-sample gap. We infer that even for a nanoscale asperity there is conformation change of the confined hexadecane under the tip apex prior to squeeze out of the molecules.