Daytime radiative cooling multilayer films designed by a machine learning method and genetic algorithm.

Recently, there has been growing interest and attention towards daytime radiative cooling. This cooling technology is considered a potentially significant alternative to traditional cooling methods because of its neither energy consumption nor harmful gas emission during operation. In this paper, a daytime radiative cooling emitter (DRCE) consisting of polydimethylsiloxane, silicon dioxide, and aluminum nitride from top to bottom on a silver-silicon substrate was designed by a machine learning method (MLM) and genetic algorithm to achieve daytime radiative cooling.

Mechanisms for enhancing interfacial phonon thermal transport by large-size nanostructures.

Employing nanostructures has been experimentally demonstrated to be an effective way of enhancing the phonon thermal transport across solid-solid interfaces, whereas the strengthening mechanism by large-size nanostructures is still unclear. In this paper, a novel theoretical method for simulating the heat transfer characteristics of the solid-solid contact interface containing large-size nanostructures is developed by combining the lattice Boltzmann method and molecular dynamics. The phonon transport features of the planar interface and the nanostructured ones are compared.