Active control of near-field radiative heat transfer by coating-twisting method

Mingjian He, Hong Qi, Yatao Ren, zhao yijun, Mauro Antezza
2020 Optics Letters  
In this Letter, active control of near-field radiative heat transfer (NFRHT) between two isotropic materials is realized by a coating-twisting method. The two slabs are coated with graphene gratings, and then the NFRHT can be not only enhanced but also weakened, by tuning the twisted angle between the two gratings. The physical mechanism is attributed to the modes coupled by the graphene gratings and the isotropic material, which can vary with the twisted angle. The proposed method is also
more » ... method is also applicable for other kinds of anisotropic films and may provide a way to realize high-precision nanoscale thermal management, nimble thermal communications, and thermal switch.
doi:10.1364/ol.392371 pmid:32412500 fatcat:ie7thp7exfcnnky5isusivklgu