Ballistic heat conduction in semiconductor nanowires

Ballistic thermal transport is a remarkable nanoscale phenomenon with possible applications in microelectronics. In the past decade, research on ballistic focused measurements of length-dependent conductivity semiconductor nanowires. this Perspective article, we review experimental demonstrations nanowires various materials and sizes at different temperatures. Our literature analysis reveals controversy between works reporting two distinct pictures conduction: perfectly conduction even room temperature weak quasi-ballistic mainly below temperature. Simulations seem to support weaker version effect. Thus, future experiments are expected resolve controversy.