Electromagnetic Detection of a Perfect Invisibility Cloak
Name
Zhang-2009-Electromagnetic Detection of a Perfect Invisibility Cloak.pdf
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1.26 MB
Format
Adobe PDF
Checksum (MD5)
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Author(s)
Zhang, Baile
Wu, Bae-Ian
Date Issued
December 2009
Journal
Physical Review Letters
Publisher
American Physical Society
Citation
Zhang, Baile , and Bae-Ian Wu. “Electromagnetic Detection of a Perfect Invisibility Cloak.” Physical Review Letters 103.24 (2009): 243901. © 2009 The American Physical Society
Version
Final published version
Abstract
A perfect invisibility cloak is commonly believed to be undetectable from electromagnetic (EM) detection because it is equivalent to a curved but empty EM space created from coordinate transformation. Based on the intrinsic asymmetry of coordinate transformation applied to motions of photons and charges, we propose a method to detect this curved EM space by shooting a fast-moving charged particle through it. A broadband radiation generated in this process makes a cloak visible. Our method is the only known EM mechanism so far to detect an ideal perfect cloak (curved EM space) within its working band.
MIT Department
Massachusetts Institute of Technology. Research Laboratory of Electronics
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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
http://dx.doi.org/10.1103/PhysRevLett.103.243901
