Micro/nano energy transport

Diffusive-electronic & ballistic-polaritonic energy transfer model in multi-layer metal thin film

We suggest a hybrid diffusive-electronic & ballistic-polaritonic energy transfer model that can simulate multi energy carrier transfer. In nanoscale metal film, electron has diffusive behavior, and surface plasmon polariton (SPP) generated by resonance has ballistic behavior for energy transfer. The multi energy carrier model start with the use of Boltzmann transport equation (BTE).

We calculate the effective thermal conductivity according to the thickness of thin dielectric film. At the interface of the dielectric film, surface phonon polaritons (SPhPs) becomes an energy carrier in the in-plane direction, improving total thermal conductivity. The thermal conductivity of phonon is based on the bulk property of silica, and the in-plane thermal conductivity of SPhPs is the predicted value from Boltzmann transport equation (BTE).