Digital Light Processing 3D-Printed Ceramic Metamaterials for Electromagnetic Wave Absorption.

ABSTRACT: Combining 3D printing with precursor-derived ceramic for fabricating electromagnetic (EM) wave-absorbing metamaterials has attracted great attention. This study presents a novel ultraviolet-curable polysiloxane precursor for digital light processing (DLP) 3D printing to fabricate ceramic parts with complex geometry, no cracks and linear shrinkage. Guiding with the principles of impedance matching, attenuation, and effective-medium theory, we design a cross-helix-array metamaterial model based on the complex permittivity constant of precursor-derived ceramics. The corresponding ceramic metamaterials can be successfully prepared by DLP printing and subsequent pyrolysis process, achieving a low reflection coefficient and a wide effective absorption bandwidth in the X-band even under high temp

SUBMITTER: Zhou R 

PROVIDER: S-EPMC9072614 | biostudies-literature | 2022 May

REPOSITORIES: biostudies-literature