Porcupic concentrators and bulbic cloaks in planar configuration

Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientificpeer-review


This contribution concerns anisotropic elliptic inclusions in a static and uniform excitation field. In particular, the discussion considers anisotropy which is axial in a way that is defined by the elliptic coordinate system. This type of axial anisotropy has been referred to as 'radial anisotropy', although other varieties of radial anisotropy do exist for other geometries. In case of an ellipse, there are at least two methods to create radial anisotropy, and the two methods lead to qualitatively different outcomes. The terms 'porcupic' and 'bulbic' have been used to refer to these two classes of radial anisotropy. The porcupic inclusions are found to exhibit field concentration and the bulbic ones are found to exhibit cloaking. The contribution discusses both types of inclusions first in isolation and then as layered structures.

Original languageEnglish
Title of host publicationProceedings of the 2016 URSI Commission B International Symposium on Electromagnetic Theory, EMTS 2016
Number of pages4
ISBN (Electronic)9781509025022
Publication statusPublished - 19 Sept 2016
MoE publication typeA4 Conference publication
EventURSI International Symposium on Electromagnetic Theory - Aalto University, Espoo, Finland
Duration: 14 Aug 201618 Aug 2016

Publication series

NameURSI International Symposium on Electromagnetic Theory
ISSN (Print)2163-405X


ConferenceURSI International Symposium on Electromagnetic Theory
Abbreviated titleEMTS
Internet address


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