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Computational design of composite EMI shields through the control of pore morphology

Published online by Cambridge University Press:  24 August 2018

Avi Bregman Open the ORCID record for Avi Bregman [Opens in a new window] ,
Alan Taub  and
Eric Michielssen
Avi Bregman*
Affiliation:
Materials Science and Engineering, University of Michigan, Ann Arbor, MI 48109, USA
Alan Taub
Affiliation:
Materials Science and Engineering, University of Michigan, Ann Arbor, MI 48109, USA
Eric Michielssen
Affiliation:
Electrical Engineering and Computer Science, University of Michigan, Ann Arbor, MI 48109, USA
*
Address all correspondence to Avi Bregman at avibreg@umich.edu
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Abstract

A model-guided design methodology for polymer composite electromagnetic (EM) interference shields is presented. The approach utilizes measurement of intrinsic complex EM parameters, predictive modeling of absorbing geometries in the COMSOL environment, and subsequent fabrication using 3D printing and compression molding. The viability of the first two steps in the approach was confirmed using a commercially available conductive nano-filled polymer composite filament, as well as a model system from the literature. Initial results suggest that the addition of periodically placed air-filled pores within the conductive polymer composite can lead to lower reflection loss and higher absorption bandwidths.

Type
Research Letters
Information
MRS Communications , Volume 8 , Issue 3 , September 2018 , pp. 1153 - 1157
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Copyright
Copyright © Materials Research Society 2018 

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