2020/06/30 by Minggang Luo, Junming Zhao, Mauro Antezza
Chemistry · Engineering · Environmental Science · Physics and Astronomy · #Chemistry #Computational physics #Condensed matter physics #Dielectric #Heat flux #Heat transfer #Materials science #Mechanics #Optics #Optoelectronics #Oscillation (cell signaling) #Physics #Quantum Electrodynamics and Casimir Effect #Radiant energy #Radiation #Radiative flux #Radiative transfer #Thermal #Thermal Radiation and Cooling Technologies #Thermal radiation #Thermodynamics #Urban Heat Island Mitigation #cond-mat.mes-hall
paper · pdf · doi:10.1063/5.0018329
published as Appl. Phys. Lett. 117, 053901 (2020) · 4 pages, 4 figures
openalex publication_date 2020/08/03 · arxiv created 2020/08/08 · arxiv updated 2020/08/11 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
We study the near-field radiative heat transfer between two twisted finite-size polar dielectric nanoparticle gratings. Different from previous studies of the same configuration, we do not rely on any approximated effective medium theory to describe the gratings. By the full many-body radiative heat transfer theory, we are able to investigate how the size, distance, and relative orientation between the gratings influence the radiative heat flux. By changing the twisting angle θ, we show a significant oscillation of the thermal conductance G(θ), due to the size effect for gratings of both square and circular shapes. The distance- and twisting-dependent coupling between the gratings accounts for a strong and characteristic modulation of radiative thermal conductance with implications for the energy management, sensing, and the micro-electromechanical system (MEMS) and nano-electromechanical system (NEMS) devices.