Thermal Transport across Solid Interfaces with Nanoscale Imperfections: Effects of Roughness, Disorder, Dislocations, and Bonding on Thermal Boundary Conductance

Figure 7

Predicted and measured values of Kapitza conductance at Al/Si interfaces plotted as a function of temperature. The open circles are the measured values at oxide-free Al/Si interfaces from [89], and the filled symbols are the data measured in our previous work [21]. It is evident that both the presence of a native oxide layer and interface roughness can have a significant effect on Kapitza conductance. Not only does roughness decrease Kapitza conductance, but also it suppresses the temperature dependence. The agreement between the dash/dot lines and the data suggests that the DMM can be adjusted to take into account both the presence of an oxide layer and interface roughness.