Ultra‐Wideband, Polarization‐Independent, Wide‐Angle Multilayer Swastika‐Shaped Metamaterial Solar Energy Absorber with Absorption Prediction using Machine Learning

• DOI: 10.1002/adts.202100604
• Publication Date: 2022-02-23T14:37:23Z
• Authors: Shobhit K. Patel; Jaymit Surve; Rajendrasinh Jadeja; Vijay Katkar; Juveriya Parmar; Kawsar Ahmed
• Keywords: Absorptance; Wideband

Abstract This paper proposes a double layer of gold multipattern swastika (DLMP) resonator based on SiO 2 substrate. The average absorption 95% is achieved for the DLMP metasurface‐based solar absorber in spectrum (0.1–3 μm) covering ultraviolet, visible, near‐infrared (NIR), and some range mid‐infrared regions which makes proposed energy ultra‐wideband. absorptance rate more than 90% bandwidth 2516 nm, 0.314 to 2.830 μm. Shape analysis also carried out structure with simulations five variations comparative terms response under radiation presented check effect shape variation absorption. Furthermore, influence several structural parameters spectra investigated. It observed that angle insensitive 0° 70° polarization insensitive. General regression neural network used build models can learn predict behavior absorbers assorted conditions. Experimental results prove these high accuracy reduce simulation time, resource requirements by 80%.