Wideband Metamaterial Absorbers Based on Conductive Plastic with Additive Manufacturing Technology

Lu, Yujiao; Chi, Baihong; Liu, Dayong; Gao, Sheng; Gao, Peng; Huang, Yao; Yang, Jun; Yin, Zhiping; Deng, Guangsheng

doi:10.1021/acsomega.8b01223

Cited by 39 publications

(12 citation statements)

References 35 publications

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“…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].…”

Section: Introductionmentioning

confidence: 99%

Additively manufactured metastructure design for broadband radar absorption

Abdullahi

Ali

2021

Beni-Suef Univ J Basic Appl Sci

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Background Recent advances in material science and electronics led to the rapid development of communication devices and radar detection techniques resulting in an ever-increasing demand for improved stealth performance of air vehicles during scouts. Absorber design employing metastructure concept has recently become a popular approach to improving radar stealth performance. Metastructure permits the realization of desired absorption characteristics by careful design of geometrical structures and material compositions. In this study, a metastructure designed based on graphite SLS composite for radar absorption has been demonstrated. The unit cell of the proposed structure is simulated by COMSOL Multiphysics to determine the frequency-dependent absorption characteristic of the structure. It is fabricated by using a low-cost selective laser sintering technique of additive manufacturing technology. Results The prototype, while measured, shows effective absorption bandwidth of 1.04 GHz that is in reasonable agreement with the simulated response of 2.08 GHz. The optimized structure exhibits ≤ − 10 dB reflectivity within a broad frequency range extending from 7.60 GHz to 18.00 GHz under normal incidence in both TE and TM polarizations. Furthermore, the absorption performance under different polarizations and incident angles has been investigated. Results indicate that the absorber displays polarization indifference and exhibits a wide-angle of incidence tolerance of up to 45° in TE polarization and 30° in TM polarizations. Conclusion In this paper, the feasibility of using graphite SLS material to design and 3D print a metastructure design for radar absorbing has been established as confirmed by the simulation and the measurement results. The advantages of low cost, ultra-broad operating band, wide-angle of incidence feature, and polarization insensitivity qualifies the proposed absorber for stealth and electromagnetic shielding applications.

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Section: Introductionmentioning

confidence: 99%

Additively manufactured metastructure design for broadband radar absorption

Abdullahi

Ali

2021

Beni-Suef Univ J Basic Appl Sci

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“…Electromagnetic (EM) wave absorber, as an invaluable component which has been widely used in energy harvesting and stealth systems, has attracted intense scientific attention. 1 –3 Recently, several artificial structures, including frequency selective surfaces (FSSs) and metasurfaces, have been used to fabricate EM wave absorbers. 4 –6 Due to the artificial surface-based EM absorber has the advantages of flexible design 7,8 and adjustable response, various structures have been designed.…”

Section: Introductionmentioning

confidence: 99%

Wideband absorber based on conductive ink frequency selective surface with polarization insensitivity and wide-incident-angle stability

Deng

Sun

et al. 2020

Nanomaterials and Nanotechnology

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In this article, a wideband, polarization-insensitive, and wide-incident-angle stable absorber based on conductive ink frequency selective surface is presented. The presented absorber is compatible with screen printing technology. The design and absorption principle of the proposed absorber is presented, and simulation analysis is conducted. The simulation results show that in the frequency range 6.58–16.38 GHz, the absorptivity of the proposed absorber is greater than 90%, while the relative absorption bandwidth is 85.4%. The whole absorber structure is relatively thin, having a total thickness of 3.3 mm, corresponding to 0.126λ0 at its center frequency. In addition, for both transverse electric and transverse magnetic incident waves, the proposed absorber achieves the absorptivity of more than 80% at the incident angle of up to 45°. A prototype of the proposed absorber is fabricated and used in experimental verification. The obtained experimental results show a good agreement with the numerical simulations. This absorber has great potential applications in the field of microwave sensing and absorbing.

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“…Recently, the 3D printing technology [25] has experienced significant development and paved a way for the design and fabrication of 3D structures. One of the advantages of the 3D design scheme is that it can improve the design flexibility of the MA by providing additional freedom in structure design.…”

Section: Introductionmentioning

confidence: 99%

Stereo Perfect Metamaterial Absorber Based on Standing Gear-Shaped Resonant Structure With Wide-Incident-Angle Stability

Deng

Sun

et al. 2020

Front. Phys.

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In this work, a single-band metamaterial absorber (MA) based on a three dimensional (3D) resonant structure is presented. The unit cell is composed of a standing gear-shaped resonator, which is embedded in the dielectric substrate. The proposed 3D MA is ultrathin with a total thickness of 2.3 mm, corresponding 0.077λ0 at its center frequency. The simulation results demonstrate a high absorption peak at 10.1 GHz with absorptivity of 99.9%. The proposed 3D MA is insensitive to the polarization of the incident wave due to its rotationally symmetric structure. Moreover, the proposed 3D MA exhibits a wide-incident-angle stability, as absorptivity of more than 85% can be achieved for both TE and TM incidences with incident angle up to 60°. Most importantly, multiband electromagnetic wave absorption of the stereo MA can be enabled by adjusting the structural parameters of the standing gear. The proposed structure is compatible with 3D printing technology and has potential applications in electromagnetic shielding.

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Wideband Metamaterial Absorbers Based on Conductive Plastic with Additive Manufacturing Technology

Cited by 39 publications

References 35 publications

Additively manufactured metastructure design for broadband radar absorption

Additively manufactured metastructure design for broadband radar absorption

Wideband absorber based on conductive ink frequency selective surface with polarization insensitivity and wide-incident-angle stability

Stereo Perfect Metamaterial Absorber Based on Standing Gear-Shaped Resonant Structure With Wide-Incident-Angle Stability

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