A Study on the Fused Deposition Modeling Process of Graphene/Nano-Fe3O4 Composite Absorber and its Absorbing Properties of Electromagnetic Microwave

Abstract

Graphene/polylactic acid; nano-Fe3O4/polylactic acid; and graphene/nano-Fe3O4/polylactic acid composite absorbers are independently produced by fused deposition modeling technology. The effects of the content of graphene and nano-Fe3O4 on absorbing properties are investigated. After measuring the electromagnetic parameters using the waveguide method, the absorbing property is characterized according to the transmission line theory. The distribution of graphene and nano-Fe3O4 in the matrix is observed by scanning electronic microscopy (SEM). The results show that the graphene and nanometer ferroferric oxide multicomponent absorbing agent helps to form a synergistic absorbing effect. In the frequency range 8.2–18.0 GHz; the absorber has the greatest absorbing property when the content of graphene and nanosize Fe3O4 are 5 wt% and 20 wt%, respectively.

Additively manufactured frequency selective surface for gain enhancement of sub‐6 GHzmonopole antenna

“…Recently, it has gained prominence even in the microwave community for manufacturing dielectric layers for antennas and other components. Various components such as horn antennas, [2][3][4][5] transmission lines, [6][7][8] array antenna systems, [9][10][11] printed antennas, 12,13 waveguide components, 14,15 and periodic surfaces [16][17][18][19][20][21][22][23][24] have been designed and developed using AM. Initially, methods like electroplating 8 or wire-mesh embedding 10 have been used to realize the conductive parts.…”

“…Initially, methods like electroplating 8 or wire-mesh embedding 10 have been used to realize the conductive parts. However, with rapid advancement in AM, alternative methods like inkjet printing, aerosol printing, fused deposition modeling (FDM) with conductive filaments, [16][17][18][19][20][21] screen printing, 22,23 and selective deposition 25 have been used for conductive part prototyping. By choosing appropriate AM techniques, an entire chip module can also be prototyped.…”

Additively manufactured metastructure design for broadband radar absorption

“…It offers high efficiency, convenience, and a low-cost fabrication process that involves printing successive layers of a given material on top of each other. Lately, 3D printing systems have been utilized to manufacture metamaterial absorbers (MMAs) of different structural designs and material bases [11][12][13][14][15][16][17]. However, the main hindrance for the fabrication of broadband MMAs using 3D printing technology is the limited range of materials compatible with 3D printers [18,19].…”

“…To enhance the dielectric performance of the common 3D printing polymers, organic materials such as carbon, carbon black, carbon nanotubes, and graphite are loaded to the polymers as hitherto demonstrated in non-3D printing polymeric composites [20,21]. Nowadays, commercially available conductive filaments like conductive PLA, conductive ABS, and graphene are being explored for the development of EM absorbers and devices using 3D printing [11][12][13][14][15][16][17][18][19]22]. However, none of the existing reports reviewed have considered graphite SLS 3D printing material.…”

3-D Printed Radar Absorber with Meta-material Features for X-band Application

“…Recently, 3D printing systems have been utilized to manufacture MMAs of different structural designs and material base (Kronberger and Soboll 2016;D. Zhou, Huang, and Du 2016;Wu et al 2020;Jiang et al 2018). However, the main hindrance for the fabrication of broadband MMAs using 3D printing technology is the limited range of materials compatible with 3D printers.…”