Laboratory for Energy and Nanosciences, Masdar Institute of Science and Technology, Abu Dhabi, UAE.
Nanotechnology. 2011 Aug 26;22(34):345401. doi: 10.1088/0957-4484/22/34/345401. Epub 2011 Jul 29.
We describe fundamental energy dissipation in dynamic nanoscale processes in terms of the localization of the interactions. In this respect, the areal density of the energy dissipated per cycle and the effective area of interaction in which each process occurs are calculated for four elementary dissipative processes. It is the ratio between these two, which we term M, that provides information about how localized the interactions are. While our results are general, we use concepts from dynamic atomic force microscopy to describe the physical phenomenon. We show that neither the phase lag, nor the magnitude of the energy dissipated alone provide information about how dissipative processes are localized. Instead, M has to be considered.
我们根据相互作用的局域化来描述动态纳米尺度过程中的基本能量耗散。在这方面，我们为四个基本耗散过程计算了每个过程发生时每循环耗散的能量的面密度和相互作用的有效面积。我们将这两个量的比值称为 M，它提供了有关相互作用局域化程度的信息。虽然我们的结果是一般性的，但我们使用动态原子力显微镜的概念来描述物理现象。我们表明，无论是相位滞后还是耗散过程耗散的能量大小都不能提供有关耗散过程如何局域化的信息。相反，必须考虑 M。
