The development of dual-polarization irreversible radiators that can operate without external magnetic field is an arduous task. To avoid the need of strong magnetic field, a dual-polarization nonreciprocal thermal radiator with the introduction of Weyl semimetal is demonstrated. It consists of cross-shaped silicon nanopores, Weyl semimetal, and Ag reflective layer. The simulation results show that the proposed radiator offers both TE- and TM-polarized strong irreversible radiation with an incident angle of 1.6°. The TE-polarized absorptivity and TM-polarized emissivity are 98.8% and 97.6%, respectively. The dual-polarization nonreciprocity exceeds 80%. The physical principle is explained by the electric field energy distribution and impedance matching theory. The demonstrated scheme and radiator have potential application in dual-polarization multi-band irreversible radiation and thermal management.

中文翻译：

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韦尔半金属双极化小角度强不可逆热辐射体

开发无需外部磁场即可工作的双极化不可逆辐射器是一项艰巨的任务。为了避免强磁场的需要，提出了一种引入Weyl半金属的双极化不可逆热辐射器。它由十字形硅纳米孔、Weyl半金属和Ag反射层组成。仿真结果表明，所提出的辐射器提供 TE 偏振和 TM 偏振强不可逆辐射，入射角为 1.6°。 TE偏振吸收率和TM偏振发射率分别为98.8%和97.6%。双极化非互易性超过80%。其物理原理是通过电场能量分布和阻抗匹配理论来解释的。所展示的方案和散热器在双偏振多频带不可逆辐射和热管理方面具有潜在的应用。