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Strain Sensing Based on Multiscale Composite Materials Reinforced with Graphene Nanoplatelets

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Published on: November 7, 2016

Robust electromagnetic absorption by graphene/polymer heterostructures.

Michaël Lobet¹, Nicolas Reckinger, Luc Henrard

¹Department of Physics & Research Group on Carbon Nanostructures (CARBONNAGe), University of Namur, 61 rue de Bruxelles, 5000 Namur, Belgium.

|June 27, 2015

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Polymer/graphene multilayers offer robust shielding against GHz electromagnetic waves. Optimal designs maintain high absorption efficiency even with common graphene defects, ensuring reliable performance.

Area of Science:

Materials Science
Condensed Matter Physics
Electromagnetism

Background:

Polymer/graphene heterostructures show promise for electromagnetic shielding.
Previous work identified an optimal number of graphene layers for millimeter wave absorption.

Purpose of the Study:

To investigate the electromagnetic shielding efficiency of polymer/graphene multilayers.
To analyze the impact of graphene defects on shielding performance.

Main Methods:

Continued-fraction formalism for ideal multilayer electrodynamics.
Rigorous coupled wave analysis (RCWA) for defect analysis.
Simulation of defects like holes, dots, and grain boundaries in graphene.

Main Results:

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Electrodynamics of ideal polymer/graphene multilayers modeled using continued fractions.
RCWA used to analyze the effect of chemical vapor deposition (CVD) graphene defects.
Optimal absorbance of multilayers shows resilience to first-order defect concentrations.

Conclusions:

Polymer/graphene multilayers provide effective shielding against GHz electromagnetic perturbations.
The shielding efficiency is robust against common graphene defects, indicating practical applicability.
These findings support the development of reliable electromagnetic absorption devices.