From blackness to invisibility – Carbon nanotubes role in the attenuation of and shielding from radio waves for stealth technology

Kolanowska, Anna; Janas, Dawid; Herman, Artur P.; Jędrysiak, Rafał G.; Giżewski, Tomasz; Boncel, Sławomir

doi:10.1016/j.carbon.2017.09.078

Cited by 119 publications

(48 citation statements)

References 106 publications

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“…The composite has a conductivity of 6100 S/m, which is similar to that of the original GN (6300 S/m), indicating the 3D graphene network was intact during the infiltration and subsequent solidification treatment of PDMS. This superior conductivity is much higher than those of previous reported CPCs with higher carbon loading levels (Table 1) [35]. This result indicates the enormous potentiality of this composite in the application of EMI shielding.…”

Section: Resultsmentioning

confidence: 55%

“…The EMI SE is an evaluation criterion of material's ability to attenuate the power of electromagnetic waves during the electromagnetic waves transmitted through. The EMI SE of PDMS/GN composites and pristine PDMS in X-band (8-12 GHz) can be extracted from the measured the S-parameter of the composite according the following equation [32][33][34][35][36][37][38][39]:…”

Section: Resultsmentioning

confidence: 99%

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Highly Conductive PDMS Composite Mechanically Enhanced with 3D-Graphene Network for High-Performance EMI Shielding Application

Tang

et al. 2020

Nanomaterials

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A highly conductive three-dimensional (3D) graphene network (GN) was fabricated by chemical vapor deposition on a 3D nickel fiber network and subsequent etching process. Then a lightweight and flexible polydimethylsiloxane (PDMS)/GN composite was prepared by a vacuum infiltration method by using the graphene network as a template. The composite showed the superior electrical conductivity of 6100 S/m even at a very low loading level of graphene (1.2 wt %). As a result, an outstanding electromagnetic interference (EMI) shielding effectiveness (SE) of around 40 and 90 dB can be achieved in the X-band at thicknesses of 0.25 and 0.75 mm, respectively, which are much higher than most of the conductive polymers filled with carbon. The 3D graphene network can also act as a mechanical enhancer for PDMS. With a loading level of 1.2 wt %, the composite shows a significant increase by 256% in tensile strength.

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Section: Resultsmentioning

confidence: 55%

Section: Resultsmentioning

confidence: 99%

Highly Conductive PDMS Composite Mechanically Enhanced with 3D-Graphene Network for High-Performance EMI Shielding Application

Tang

et al. 2020

Nanomaterials

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“…62 CNTs of low density and higher electrical and thermal conductivity are suitable for developing radar-absorbing materials (RAMs) and electromagnetic shielding materials. 63 The EMI shielding increases with increase in the conductivity of CNTs.…”

Section: Electromagnetic Compatibilitymentioning

confidence: 99%

Applications of Microwave Materials: A Review

Raveendran

Sebastian

Raman

2019

Journal of Elec Materi

127

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The performance of microwave devices mainly depends on the properties of materials used in the fabrication. Knowledge of material properties at microwave frequencies is a prerequisite to select suitable materials for various microwave applications and vice versa. In this review, seven categories of materials and their applications in a microwave regime are elaborately discussed. The categories include magnetic materials, carbon-based materials, flexible or stretchable materials, biomaterials, phantoms, tunable materials and metamaterials. A brief overview of other important microwave materials such as low-loss ceramic dielectric materials, low-loss polymer ceramic composites, glass ceramics and multilayer ceramics is also given. The objective of this review is to expose the world of materials for wide microwave applications and thereby properly assisting the material selection for specific applications. Moreover, this review has dual significance. It helps material scientists to develop new materials and modify the properties of the available materials with respect to the application requirements. It also assists microwave engineers to select and use appropriate materials for different microwave applications.

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“…Kolanowoska et al . have extensively explored all possibilities of using CNT as radar absorbing materials for stealth and shielding.…”

Section: Summary Of Research Developments On Rasmentioning

confidence: 99%

Polymer matrix composites as broadband radar absorbing structures for stealth aircrafts

Jayalakshmi

Inamdar

Anand

et al. 2018

J of Applied Polymer Sci

124

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Stealth or low observable technology has been one of the most critical requirements for military aviation sector to counter the ever‐advancing target detection technologies worldwide. Among many, Radar, which operates in the broadband spectrum, is one of the principal threats, which measures the radar cross section (RCS) of the aircraft. Hence, researchers are putting immense efforts to develop low RCS materials based on polymer matrix composites (PMCs) called as radar absorbing structures (RAS), to replace highly reflective conventional metallic aircraft structures. Though many researchers have been successful in RAS realization using radar absorbing materials (RAMs) as fillers, this review article reckons the state‐of‐the‐art advanced research on the realization of RAS using a combination of RAMs and multilayered grid devices such as, frequency selective surfaces, circuit analog absorbers, metamaterials, and so on, and their effect on mechanical properties to deliver superior performance RAS for stealth aircrafts. © 2018 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2019, 136, 47241.

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From blackness to invisibility – Carbon nanotubes role in the attenuation of and shielding from radio waves for stealth technology

Cited by 119 publications

References 106 publications

Highly Conductive PDMS Composite Mechanically Enhanced with 3D-Graphene Network for High-Performance EMI Shielding Application

Highly Conductive PDMS Composite Mechanically Enhanced with 3D-Graphene Network for High-Performance EMI Shielding Application

Applications of Microwave Materials: A Review

Polymer matrix composites as broadband radar absorbing structures for stealth aircrafts

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