General scaling limitations of ground-plane and isolated-object cloaks
Name
Hashemi-2011-General scaling limitations.pdf
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Author(s)
Hashemi, Hila
Oskooi, Ardavan
Joannopoulos, John
Johnson, Steven G
Date Issued
August 2011
Journal
Physical Review A
Publisher
American Physical Society
Citation
Hashemi, Hila et al. “General scaling limitations of ground-plane and isolated-object cloaks.” Physical Review A 84 (2011): n. pag. Web. 17 Nov. 2011. © 2011 American Physical Society
Version
Final published version
Abstract
We prove that, for arbitrary three-dimensional transformation-based invisibility cloaking of an object above a ground plane or of isolated objects, there are practical constraints that increase with the object size. In particular, we show that the cloak thickness must scale proportionally to the thickness of the object being cloaked, assuming bounded refractive indices, and that absorption discrepancies and other imperfections must scale inversely with the object thickness. For isolated objects, we also show that bounded refractive indices imply a lower bound on the effective cross section.
MIT Department
Massachusetts Institute of Technology. Institute for Soldier Nanotechnologies
Massachusetts Institute of Technology. Department of Mathematics
Massachusetts Institute of Technology. Department of Physics
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Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use.
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DOI of Published Version
https://doi.org/10.1103/PhysRevA.84.023815
