Format

Send to

Choose Destination
Phys Rev Lett. 2009 Dec 11;103(24):243901. Epub 2009 Dec 7.

Electromagnetic detection of a perfect invisibility cloak.

Author information

1
Research Laboratory of Electronics, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA.

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.

Supplemental Content

Full text links

Icon for American Physical Society
Loading ...
Support Center