Thermal boundary resistance at an epitaxially perfect interface of thin films

Thermal Boundary Resistance at an Epitaxially Perfect Interface of Thin Films

Abstract At the interfaces in an ideal epitaxial superlattice, it may be expected that there exists no thermal boundary resistance (TBR) due to thermal motions because the interfaces are atomically perfect. However, recent researches reported that the TBR still exists at the epitaxial interfaces of superlattices. Our previous study suggested the model, which was named as the C-M model, to predi...

Feasibility Study of a New Model for the Thermal Boundary Resistance at an Interface of Solid Thin Films

The thermal boundary resistance (TBR) is still a challengeable subject since its mechanism to explain quantitatively is not clear in spite of its importance. We performed non-equilibrium molecular dynamic (NEMD) simulation to evaluate TBR at an epitaxial solid interface composed of two different materials. Solid argon is selected as a simulation material since it is a non-conductor electrically...

Effective thermal boundary resistance from thermal decoupling of magnons and phonons in SrRuO3 thin films

Epitaxially influenced boundary layer model for size effect in thin metallic films

It is shown that the size effect recently observed by Espinosa et al., fJ. Mech. Phys. Solids 51, 47 s2003dg in pure tension tests on free thin metallic films can be explained by the existence of a boundary layer of fixed thickness, located at the surface of the film that was attached onto the substrate during deposition. The boundary layer is influenced by the epitaxial effects of crystal grow...

Thermal phonon boundary scattering in anisotropic thin films

Boundary scattering of thermal phonons in thin solid films is typically analyzed using FuchsSondheimer theory, which provides a simple equation to calculate the reduction of thermal conductivity as a function of the film thickness. However, this widely-used equation is not applicable to highly anisotropic solids like graphite because it assumes the phonon dispersion is isotropic. Here, we deriv...