A robust approach to the design of an electromagnetic shield based on pyrolitic carbon

Patrizia Lamberti,Vincenzo Tucci,Polina Kuzhir

doi:10.1063/1.4958298

Patrizia Lamberti, Vincenzo Tucci + Show 1 more

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https://doi.org/10.1063/1.4958298

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Journal: AIP Advances	Publication Date: Jul 1, 2016
Citations: 5	License type: CC BY 4.0

Affiliation: University of Salerno, Belarusian State University

Abstract

A robust approach to the design of an electromagnetic shield based on ultra-thin pyrolytic carbon (PyC, 5 ÷ 110 nm) films is proposed. Finite Element Method (FEM) simulations and Monte Carlo based tolerance analysis are used to show that even a deviation of 15 ÷ 20% from the nominal values of the most important design parameters of the PyC film, i.e. its thickness and sheet resistance, does not significantly affect the wanted level of electromagnetic interference shielding efficiency (EMI SE). The ranges of the SE show that EMI shield based on PyC film is characterized by a robust behavior with respect to the variation of such parameters due to the production processes. Therefore, since the PyC can be produced on a scalable basis, is chemically inert, significantly transparent in the visible range and can be deposited onto both metal and dielectric substrates, including flexible polymers, it may be appropriate for the highly demanding technological needs associated to the graphene revolution and can be developed from laboratory to mass production applications.

Highlights

As the microwave spectrum becomes more and more crowded and electromagnetic compatibility problems become more stressful, one needs new functional materials with high electromagnetic (EM) interference shielding efficiency (EMI SE) for EM coatings, shields and filters working in the microwave frequency bands.Carbon is an attractive material for electromagnetic shielding because of its low density and high electrical conductivity of the carbon allotropes with dominated sp[2] bonds.[1]
Finite Element Method (FEM) simulations and Monte Carlo based tolerance analysis are used to show that even a deviation of 15÷20% from the nominal values of the most important design parameters of the Pyrolytic Carbon (PyC) film, i.e. its thickness and sheet resistance, does not significantly affect the wanted level of electromagnetic interference shielding efficiency (EMI SE)
The ranges of the SE show that EMI shield based on PyC film is characterized by a robust behavior with respect to the variation of such parameters due to the production processes

Summary

Introduction

As the microwave spectrum becomes more and more crowded and electromagnetic compatibility problems become more stressful, one needs new functional materials with high electromagnetic (EM) interference shielding efficiency (EMI SE) for EM coatings, shields and filters working in the microwave frequency bands.Carbon is an attractive material for electromagnetic shielding because of its low density and high electrical conductivity of the carbon allotropes with dominated sp[2] bonds.[1]. As the microwave spectrum becomes more and more crowded and electromagnetic compatibility problems become more stressful, one needs new functional materials with high electromagnetic (EM) interference shielding efficiency (EMI SE) for EM coatings, shields and filters working in the microwave frequency bands. By combining high optical transparency[20] and small sheet electrical resistance, flexibility

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