ANALYSIS OF EXPERIMENTAL LOAD DEPENDENCE OF TWO-DIMENSIONAL ATOMIC-SCALE FRICTION
ANALYSIS OF EXPERIMENTAL LOAD DEPENDENCE OF TWO-DIMENSIONAL ATOMIC-SCALE FRICTION
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二维原子尺度摩擦实验载荷依赖性分析
DOI：
10.1103/physrevb.58.4909
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发表时间：
1998
影响因子：
3.7
通讯作者：
S. Morita
中科院分区：
文献类型：
--
作者：
S. Fujisawa;K. Yokoyama;Y. Sugawara;S. Morita
通过使用二维摩擦力显微镜，我们实验研究并分析了单个粗糙尖端和石墨原子平坦表面之间原子级摩擦的载荷依赖性。虽然尖端在较高负载区域中显示出具有晶格周期性的粘着域之间的二维离散跳跃，但在较低负载区域中尖端显示出相当平滑的运动。粘着区域的范围随着负载的增加而减小。此外，离散跳跃的之字形运动的出现频率随着负载的增加而降低。这些结果可以通过有效粘合区域的负载依赖性来解释。
By using a two-dimensional frictional force microscope, we experimentally investigated and analyzed load dependence of atomic-scale friction between a single asperity tip and an atomically flat surface of graphite. While the tip shows the two-dimensional discrete jump between the sticking domains with the lattice periodicity in the higher load region, in the lower load region the tip shows rather smooth motion. The extent of the sticking domain decreases by increasing the load. Further, the appearance frequency of the zigzag motion of the discrete jump decreases by increasing the load. These results are explained by the load dependence of the effective adhesive region.