Quasiballistic Thermal Transport from Nanoscale Heaters and the Role of the Spatial Frequency

Engineering heat transport at the nanoscale is important for thermal management in modern technology, but precisely how thermal resistance is affected by geometry and length scale has been a topic of debate. This study identifies a key parameter, the spatial frequency of a heating pattern, that governs thermal transport at the nanoscale. This result provides a means to quantitatively manipulate thermal dissipation at the nanoscale, simply by considering the spatial frequencies of the heating pattern.