Nanotechnology of transparent metals for radio frequency electromagnetic shielding

Sarto, Maria Sabrina; Sarto, F.; Larciprete, Maria Cristina; Scalora, Michael; D’Amore, M.; Sibilia, C.; Bertolotti, M.

doi:10.1109/temc.2003.819057

Cited by 56 publications

(34 citation statements)

References 16 publications

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“…Currently, one of the most extensively developing field of applications of composite materials, is engineering of materials used for shielding from electromagnetic fields [1][2][3][4][5]. The increasing interest in many fields of technology are recorded in the application of textiles with intentionally modified surface properties [6,7].…”

Section: Introductionmentioning

confidence: 99%

“…Materials used in the technique of shielding EM fields must have a sufficiently high value of shielding effectiveness factor (SE), defined as: SE = 10 log P 0 P t = 20 log E 0 E t = 20 log H 0 H t (1) where: P 0 , P t -surface power density of the incident EM wave P 0 and transmitted through screen P t ; E 0 , E t -the electric field of the incident wave and transmitted through the screen, respectively; H 0 , H t -the magnetic field of Contribution to the Topical Issue "Materials for Dielectric Applications", edited by Maciej Jaroszewski and Sabu Thomas.…”

Section: Introductionmentioning

confidence: 99%

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Flexible barrier materials for protection against electromagnetic fields and their characterization

Jaroszewski

2015

Eur. Phys. J. B

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Abstract.Composite materials for electromagnetic shielding can be manufactured as textiles using conductive yarns and textiles with conductivity obtained by various finishing processes on textile surfaces. The EM shielding effectiveness of fabrics are improved by lowering its conductivity using different methods and materials. An alternative is the usage of new light shielding materials in the form of metallized nonwoven fabrics or textiles. Their advantages are: a general availability on the market, a low price, good mechanical properties (strength, elasticity) and resistance to the environmental conditions. The composite anisotropic materials with a sandwich structure constituting of materials with different spatial orientations of fibers allow one to achieve relatively high and constant values of the shielding effectiveness which, together with the materials' mechanical properties, leads to a wide range of applicability in various disciplines of modern technology. This article is devoted to innovative flexible materials shielding electromagnetic field. The results of the PEM shielding effectiveness obtained for the polypropylene (PP) nonwoven fabrics metallized by pulsed magnetron sputtering are presented.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Flexible barrier materials for protection against electromagnetic fields and their characterization

Jaroszewski

2015

Eur. Phys. J. B

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“…Ulrich [6], Whitbourn and Compton [7], and Ciddor and Whitbourn [8] used an empirical resistance formula based on waveguide theory to analyze a mesh interference filter, but DC sheet resistance calculated using their formula is zero and inconsistent with the facts of no-zero DC resistance characteristics. Sarto et al [9], D'Amore et al [10], and Jacoby et al [11] proposed a DC resistance model independent of frequency, but did not give a frequency dependent model of sheet resistance. So the above evaluation models are not suitable to describe the sheet resistance and EMI shielding of transparent conductive mesh coating.…”

Section: Introductionmentioning

confidence: 99%

Frequency Dependent Model of Sheet Resistance and Effect Analysis on Shielding Effectiveness of Transparent Conductive Mesh Coatings

Liu¹,

Tan²

2013

PIER

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Abstract-A frequency dependent model of sheet resistance of transparent conductive mesh coatings is proposed based on transmission line theory and vilified by experiments. And the effect on shielding effectiveness of frequency dependent sheet resistance is analyzed. Simulation results of shielding effectiveness are compared with the experimental data of a mesh-coated window sample with equivalent parameters fabricated and measured by Exotic Electro-Optics. The agreement between experiment and simulated proves the validity of the proposed sheet resistance model. So it can be therefore concluded that the frequency dependent model can be used to reasonably evaluate sheet resistance and shielding effectiveness of transparent conductive mesh coated windows.

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“…Transparent EM screens can be realized also by exploiting the thermal control films, which are based on metals and thus can also offer interesting shielding properties at RF [2]. In the last years, innovative multilayer nanometric transparent coatings for the EM shielding (one-dimensional photonic crystals) have been proposed: the nanostructured screens consisting of silver layers provide EM shielding of 40 dB at RF and OT of 70% in the visible range [3]. Application of this technology was proposed for hardening of aircraft windows against high intensity radiation field (HIRF) penetration [4].…”

Section: Introductionmentioning

confidence: 99%

Optimal design of multifunctional transparent shields against radio frequency electromagnetic fields

D’Amore

Lampasi

Sarto

et al. 2009

2009 Electromagnetic Compatibility Symposium Adelaide

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An integrated tool for the optimal design and characterization of multilayer transparent coatings is developed. The coatings consist of thermal control films or nanometric metallo-dielectric layers. Electromagnetic shielding, optical transmittance, heat control, and thermal de-icing are the multifunctional performances of the proposed coatings. A circuit approach is developed for the prediction of the shielding effectiveness of electrically small apertures loaded with the transparent coating. The hypotheses of electrically short planar structure and large cavity are assumed. Applications of the proposed procedure are carried out to the window of a building and of a transportation aircraft. Measured and computed spectra of the shielding effectiveness and optical transmittance are presented in the radio frequency range.

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Nanotechnology of transparent metals for radio frequency electromagnetic shielding

Cited by 56 publications

References 16 publications

Flexible barrier materials for protection against electromagnetic fields and their characterization

Flexible barrier materials for protection against electromagnetic fields and their characterization

Frequency Dependent Model of Sheet Resistance and Effect Analysis on Shielding Effectiveness of Transparent Conductive Mesh Coatings

Optimal design of multifunctional transparent shields against radio frequency electromagnetic fields

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