High temperature infrared-radar compatible stealthy metamaterial based on an ultrathin high-entropy alloy

• DOI: 10.1364/oe.475355
• Publication Date: 2022-10-21T12:00:31Z
• Authors: Boheng Gui; Jun Wang; Ying Zhu; Lei Zhang; Mingde Feng; Jiafu Wang; Hua Ma; Shaobo Qu
• Keywords: Thermophotovoltaic

In this work, a high temperature infrared (IR) and radar compatible stealthy metamaterial based on ultrathin high-entropy alloy are proposed. From room to 600°C, the fabricated absorption layer (RAL) can have wideband in X-band (8.2-12.4 GHz) with average 78% owing magnetic resonance ohmic loss. The film is further design as shielding (ISL) due low-emissivity property. ISL RAL consist of IR-microwave stealth metamaterial. It give rise strong reduction both wave reflection thermal emission. Its bandwidth (absorption over 90%) 2.15 GHz. atmosphere window, it suppress half radiation. This realized by subtle combination between specifically designed that control emission microwave absorption. These results show they practically very promising for application radar-infrared bi-stealth technology environment.