Phonon weak couplings in nanoscale thermophysics

With the development of nanoscale thermophysics, a vast number novel phenomena have emerged, which closely relate to phonon weak couplings. The causes couplings mechanism and related physical discoveries are discussed in this article, including size effect low-dimensional systems, multi-temperature model, van der Waals cross interfaces. Corresponding frontier researches also summarized. current problems couplings, such as how add wave-like behaviors into theoretical briefly prospected.