Manipulation of effective thermal conductivity of multilayer thin film by varying thickness ratio of layers using Monte Carlo simulation

Publication date: Available online 11 September 2018Source: Physics Letters AAuthor(s): Xin Ran, Moran WangAbstractUsing the kinetic-type Monte Carlo method, we have simulated the effective thermal conductivity of multilayer thin film with spectral diffuse mismatch model for interface treatment. The results show a monotonously increasing relationship between the thermal conductivity and the material thickness closer to isothermal boundary with a varied size ratio whereas the fixed material amount in two four-layer thin films. This is explained by relatively more significant size effect of the layer closer to the isothermal boundary than that of the layer apart from the isothermal boundary. The finding in the present work guides a new way for optimization and design of interface structures at micro- and nano-scale.

Source: Physics Letters A - September 12, 2018 Category: Physics Source Type: research