Flexible metalized tubes for electromagnetic waveguiding

Filonov, Dmitry; Barhom, Hahi; Shmidt, A. A.; Sverdlov, Yelena; Shacham‐Diamand, Yosi; Boag, Amir; Ginzburg, Pavel

doi:10.1016/j.jqsrt.2019.05.008

Cited by 5 publications

(3 citation statements)

References 23 publications

(16 reference statements)

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“…Typically, several microns of copper is sufficient for the 1–10 GHz frequency range. It is worth noting that electroless plating can be used to cover non-conductive polymers, though this approach requires quite extensive chemical processing steps 31 , 32 . Another technique is electroplating, where electrochemical deposition is made on materials with a sufficient low-frequency conductivity.…”

Section: Resultsmentioning

confidence: 99%

Simple low-cost 3D metal printing via plastic skeleton burning

Burtsev

Vosheva

Khudykin

et al. 2022

Sci Rep

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Additive manufacturing of complex volumetric structures opened new frontiers in many technological fields, turning previously inconceivable designs into a practical reality. Electromagnetic components, including antenna and waveguiding elements, can benefit from exploring the third dimension. While fused deposition modeling (FDM) polymer printers become widely accessible, they manufacture structures with moderately low electromagnetic permittivities, compared to metals. However, metal 3D printers, being capable of producing complex volumetric constructions, remain extremely expensive and hard to maintain apparatus, suitable for high-end market applications. Here we develop a new metal printing technique, based on a low-cost and simple FDM device and subsequent electrochemical deposition. For testing the new method, we fabricated several antenna devices and compared their performances to standard printed FeCl3 etched board-based counterparts, demonstrating clear advantages of the new technique. Our new metal printing can be applied to manufacture electromagnetic devices as well as metallic structures for other applications.

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Section: Resultsmentioning

confidence: 99%

Simple low-cost 3D metal printing via plastic skeleton burning

Burtsev

Vosheva

Khudykin

et al. 2022

Sci Rep

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“…Continuous shape variation of the cavity configuration allows permittivity retrieval. Additive manufacturing techniques and selective surface metallization can allow creating complex geometries 6,22 and, as the result, can allow more accurate parametric retrieval on expense of computational and post-processing simplicity.…”

Section: Discussionmentioning

confidence: 99%

Broadband resonant calibration-free complex permittivity retrieval of liquid solutions

Filonov

Kretov

Kurdjumov

et al. 2019

Journal of Quantitative Spectroscopy and Radiative Transfer

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Material susceptibilities govern interactions between electromagnetic waves and matter. They are of a crucial importance for basic understanding of natural phenomena and for tailoring practical applications. Here we present a new calibration-free method for relative complex permittivity retrieval, which allows use of inexpensive and accessible equipment, and simplifies the measurement process. This method combines the advantages of resonant and non-resonant techniques, which allow the extraction of material parameters of liquids and solids in a broad frequency range, where material's loss tangent is less than 0.5. The essence of the method is based on excitation of magnetic dipole resonance in a spherical sample with variable dimensions. The size-dependent resonant frequencies and the quality factors of magnetic dipolar modes are mapped on real and imaginary parts of permittivity by employing Mie theory. Samples are comprised of liquid solutions, enclosed in stretchable covers, which allows changing the dimensions continuously. This approach enables the tuning of the magnetic dipolar resonance over a wide frequency range, effectively making resonance retrieval method broadband. The technique can be extended to powders and solid materials, depending on their physical parameters, such as granularity and processability.

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“…Electrodeposition of copper 29,30 was performed in a two-electrode cell consisting of a corona scatterer (PLA plastic skeleton was 3D-printed on a standard FLASHFORGE ADVENTURER 3 device) as a working electrode and a copper plate as a source of Cu 2+ ions. The sample was pre-washed in EtOH to improve wettability and remove impurities.…”

Section: Methodsmentioning

confidence: 99%

All-angle All Polarization Broadband ‘Corona’ Scatterer

Mikhailovskaya

Vovchuk²,

Grotov³

et al. 2022

Preprint

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Creeping waves traveling around a volumetric electromagnetic scatterer provide a significant contribution to its radar cross-section. While quite a few efforts were devoted to suppressing creeping waves as a part of radar countermeasures, here we utilize specially engineered creeping waves to our advantage to create broadband, all-angle, and polarization scatterers. Metalized spherical surfaces, patterned with corona virus-like spikes are designed to provide a broadband constructive interference between the specular reflection and creeping waves, elevating the scattering cross-section. The demonstrated miniature corona scatterers, utilizing both cascaded resonant phenomena and traveling wave interference to tailor electromagnetic interactions, outperform a resonant dipole in terms of amplitude and bandwidth quite significantly. Our experimental samples are fabricated with an additive manufacturing technique, where a 3D-printed plastic skeleton is subsequently metalized. Micron-thick layers are deposited with an electroless method and allow governing electromagnetic interactions as if the entire object was made of solid metal. Lightweight, all-angle, all-polarization, and broadband compact scatterers such as these have numerous applications, including radar deception, electromagnetic beckoning, and many others.

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Flexible metalized tubes for electromagnetic waveguiding

Cited by 5 publications

References 23 publications

Simple low-cost 3D metal printing via plastic skeleton burning

Simple low-cost 3D metal printing via plastic skeleton burning

Broadband resonant calibration-free complex permittivity retrieval of liquid solutions

All-angle All Polarization Broadband ‘Corona’ Scatterer

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