Modeling and measurements of atomic surface roughness.
Modeling and measurements of atomic surface roughness.
复制标题
原子表面粗糙度的建模和测量。
DOI：
10.1364/ao.39.002705
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发表时间：
2000
期刊：
影响因子：
1.9
通讯作者：
K. Yamashita
中科院分区：
文献类型：
--
作者：
Y. Namba;J. Yu;J. Bennett;K. Yamashita
我们提出了一个原子形貌的几何模型，用它来获得表面粗糙度的定量评估。建立了一系列具有足够真实参数的二维和三维原子表面粗糙度方程，以便与扫描隧道显微镜和原子力显微镜（AFM）的实验结果进行定量比较。这个模型非常简单，人们可以很容易地用它来解释实验数据。根据原子表面粗糙度方程给出了纯金属晶体和离子晶体的二维和三维均方根原子表面粗糙度估计值。我们使用这些粗糙度方程来确定劈裂白云母的粗糙度[本质上是KAl(2)(OH)(2)Si(3)AlO(10)]；二维和三维粗糙度的计算值与我们的AFM测量结果一致。此外，我们从理论上和实验上证明了原子表面粗糙度永远不会为零。
We present a geometrical model of atomic topography with which to obtain a quantitative assessment of surface roughness. A series of two- and three-dimensional atomic surface roughness equations with sufficiently realistic parameters is developed to permit quantitative comparison with scanning-tunneling microscope and atomic-force microscope (AFM) experimental results. The model is sufficiently simple that one can easily use it to interpret experimental data. Tables are provided with estimated values for two- and three-dimensional rms atomic surface roughness in pure metal crystals and ionic crystals based on the atomic surface roughness equations. We use these roughness equations to determine the roughness of cleaved muscovite mica [essentially, KAl(2)(OH)(2)Si(3)AlO(10)]; the calculated values for both two- and three-dimensional roughness are consistent with those obtained in our AFM measurements. In addition, we demonstrate both theoretically and experimentally that atomic surface roughness is never zero.