论文标题
分层媒体上的摩擦：声子到达多深？
Friction on layered media: How deep do phonons reach?
论文作者
论文摘要
从理论上讲，我们研究了涂层平面表面上小探头对象的摩擦阻尼，从而通过粘弹性理论分析了所得的声子模式。发现三种不同类型的激发以不同的方式导致摩擦：行进（3D）球形波，行进（2D）表面波和evaneScent波波。在行进波将能量从探针中运输（由远程弹性特性（波长）决定）时，evaneScent波将能量转化为近场范围内的热量，其特征是探针的大小。因此，根据涂料厚度和材料特性，可以预测从根本上进行不同的行为。
We theoretically study the frictional damping of a small probe object on a coated planar surface, analyzing the resulting phonon modes via a theory of viscoelasticity. Three different types of excitations are found to contribute to friction in distinct ways: traveling (3D) spherical waves, traveling (2D) surface waves, and evanescent waves. While traveling waves transport energy away from the probe, determined by long range elastic properties (wavelength), evanescent waves transform energy into heat in a near-field range, characterized by the size of the probe. Thus, fundamentally different behaviors are predicted, depending on coating thickness and material properties.
