Ultra‐broadband and wide‐angle metamaterial absorber with carbon black/carbonyl iron composites fabricated by direct‐ink‐write 3D printing

Zhang, Z., Wang, F., Zhang, J., Li, P. and Jiang, K. (2023) Ultra‐broadband and wide‐angle metamaterial absorber with carbon black/carbonyl iron composites fabricated by direct‐ink‐write 3D printing. Advanced Engineering Materials, 25(6), 2201236. (doi: 10.1002/adem.202201236)

Abstract

This study proposes the fabrication of an asymmetric woodpile metamaterial absorber using direct-ink-writing 3D printing technology. The prepared inks are compounded using two loss fillers: carbon black and carbonyl iron powder. The synergistic effect enhances the electromagnetic loss performance and the synergistic mechanism is analyzed. The designed asymmetric woodpile absorber has a wider bandwidth than a simple tetragonal woodpile, and the advantage presented by the asymmetric woodpile arrangement overcomes the local impedance mismatch. A simulation is then performed, which demonstrates that the designed asymmetric woodpile metamaterial with a thickness of 8.6 mm can achieve a −10 dB absorbing bandwidth in the frequency range of 3.9–18 GHz, and the maximum reflection loss reaches up to −39 dB. Additionally, the absorber exhibits excellent angular performance and the absorption bandwidth of the transverse electric polarization or transverse magnetic polarization waves can reach more than 10 GHz with incident angles from 0° to 50°. Furthermore, the manufacturing process of the absorber is simple, efficient, and inexpensive, which presents considerable potential for its widespread implementation in practical engineering applications.

• Item Type: Articles
• Additional Information: This work was supported by National Natural Science Foundation of China (51475174) and FuJian Provincial Science and Technology Plan Pilot Project (grant no. 2019H0014).
• Status: Published
• Refereed: Yes
• Glasgow Author(s) Enlighten ID: Li, Dr Peifeng
• Authors: Zhang, Z., Wang, F., Zhang, J., Li, P., and Jiang, K.
• College/School: College of Science and Engineering > School of Engineering > Systems Power and Energy
• Journal Name: Advanced Engineering Materials
• Publisher: Wiley
• ISSN: 1438-1656
• ISSN (Online): 1527-2648
• Published Online: 14 December 2022
• Copyright Holders: Copyright © 2022 John Wiley & Sons
• First Published: First published in Advanced Engineering Materials 25(6): 2201236
• Publisher Policy: Reproduced in accordance with the copyright policy of the publisher