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Defense Intelligence Reference Document Invisibilty Cloaking Theory And Experiments

Defense Intelligence Agency · 29 pages · text from the file's own layer

This Defense Intelligence Reference Document, dated 2 March 2010 and produced by the Defense Intelligence Agency under its Advanced Aerospace Weapon System Applications (AAWSA) Program, is a technical survey of invisibility. It covers camouflage, including stealth aircraft and optical camouflage, then transparency, cloaking by coordinate transformation, metamaterials and non-Euclidean broadband cloaking. It concludes that perfect cloaking is impossible but imperfect microwave cloaks are within reach of present technology. Whether cloaking will work at visible wavelengths remains unclear.

  • p. 14 …of about 3-mm size, so-called split- ring resonators. 9 UNCLASSIFIED/ ;«F81il 8FFI&I.«1k…
  • p. 15 …8FFll!l*L 1!1!11! t!IIU:!Y The split-ring resonators are electromagnetic circuits…
  • p. 16 …Instead of split-ring resonators, nano-scale metal wires are embedded in a transparent host material…
  • p. 17 …The thin wires will have lower electric losses than split-ring resonators, and their radiation losses…
  • p. 18 …data from structures based on the double split-ring resonator (SRR); green: data from U-shaped…
  • p. 26 …ground-plate cloak, thousands of cells with split-ring resonators with individual, tailor-made electromagnetic properties…
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21 J. Valentine, S. Zhang, T. Zentgraf, E. Ulin-Avila, D. A. Genov, G. Bartal, and X. Zhang, Three-dimensional
optical metamaterial with a negative refractive index, Nature 455, 376 (2008).
28 U. Leonhardt and T. G. Philbin, General relativity In electrical engineering, New Journal of Physics 8, 247 (2006).
29 U. Leonhardt and T. Tye, Broadband Invisibility by Non-Euclidean Cloaking, Science 323, 110 (2009).
30 U. Leonhardt and T. Tye, Broadband Invisibility by Non-Euclidean Cloaking, Science 323, 110 (2009).
'' H. Chen and C. T. Chan, Time delays and energy transport velocities in three dimensional ideal cloaking devices,
Journal of Applied Physics 104, 033113 (2008).
32 U. Leonhardt and T. Tye, Broadband Invisibility by Non-Euclidean Cloaking, Science 323, 110 (2009).
"M. Born and E. Wolf, Principles of Optics (Cambridge University Press, Cambridge, 1999).
30 U. Leonhardt and T. Tye, Broadband Invisibility by Non-Euclidean Cloaking, Science 323, 110 (2009).
35 U. Leonhardt and T. Tye, Broadband Invisibility by Non-Euclidean Cloaking, Science 323, 110 (2009).
36 D. Schurig, J. J. Mock, B. J. Justice, S. A. Cummer, J.B. Pendry, A. F. Starr, and D. R. Smith, Meta material
Electromagnetic Cloak at Microwave Frequencies, Science 314, 977 (2006).
37 R. Liu, C. Ji, J. J. Mock, J. Y. Chin, T. J. Cui, and D. R. Smith, Broadband Ground-Plane Cloak, Science 323,366
(2009).
38 R. Liu, C. Ji, J. J. Mock, J. Y. Chin, T. J. Cui, and D.R. Smith, Broadband Ground-Plane Cloak, Science 323,366
(2009).
39 C. M. SoukoulIs, S. Linden, and M. Wegener, Costas M. SoukoulIs, Stefan Linden, and Martin Wegener, Negative
Refractive Index at Optical Wavelengths, Science 315, 47 (2007).
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Report, from the dia collection. The PDF is mirrored here; the original link is under it. 29 pages are in the text index: search them above, or from the library's search.