Jian-sheng Wang

Jun 24, 2024 | link.aps.org | Tao Zhu |Yong-mei Zhang |Jian-sheng Wang

Using the nonequilibrium Green's function formalism, we propose a general microscopic framework to investigate the radiative heat transfer (RHT) between coplanar objects with a square lattice. We employ the obtained formulas to two-dimensional (2D) metal configurations with a tight-binding model and the Drude model. Our results reveal that the RHT between coplanar 2D metals is significantly larger than black-body radiation in both the near and far fields, leading to a global super-Planckian RHT.

Mar 4, 2024 | link.aps.org | Jian-sheng Wang |Laboratoire Charles Coulomb |Mauro Antezza

Based on a tight-binding model for the electron system, we investigate the transfer of energy, momentum, and angular momentum mediated by electromagnetic fields among buckminsterfullerene (C60) and graphene nanostrips. Our nonequilibrium Green's function approach enables calculations away from local thermal equilibrium where the fluctuation-dissipation theorem breaks down. For example, the forces between C60 and current-carrying nanostrips are predicted.