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Visible-mid Infrared Ultra-broadband and Wide-angle Metamaterial Perfect Absorber Based on Cermet Films with Nano-cone Structure by Fan Yang; Rui-Hao Li; Shi-Long Tan; Jian-Wen Dong; Shao-Ji Jiang is a Engineering article available to read on EtoBox.

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Metamaterial absorbers over a broadband spectrum with high absorption, good angular tolerance, and easy configurations have essential importance for optical and optoelectronic devices. In this study, a hybrid metamaterial absorber comprising multilayered cermet thin films (multi-cermet) with tapered structure is designed and experimentally demonstrated. Combining optical interference of multi-cermet films and optical field localization of nano-cone structures, the average absorbance of both simulation and measurement are more than 98% in an ultrabroad bandwidth (300-3000 nm), and the proposed absorber shows a good angular tolerance as well. The composite process of two easy-operated and efficient methods, colloidal lithography, and magnetron sputtering, is employed for large-area fabrication. In addition, owing to flexible polyimide substrate, the proposed absorber also shows good bending and heating resistance, which reflects its potential in engineering application.

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Author

Fan Yang; Rui-Hao Li; Shi-Long Tan; Jian-Wen Dong; Shao-Ji Jiang

Publisher

Walter de Gruyter GmbH

Published

2023

Language

EN

Field

Engineering (Physical Sciences)