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This Defense Intelligence Reference Document from the Defense Intelligence Agency, dated 6 April 2010, reviews electromagnetic and optical metamaterials for aerospace use. It was produced in FY 2009 under the Advanced Aerospace Weapon System Applications (AAWSA) Program. The report covers super-lenses and hyper-lenses for imaging objects smaller than the diffraction limit, slowing light to shrink components, energy-harvesting absorbers, and one-way chiral devices. It concludes that metamaterials matter for aerospace because they allow smaller, lighter components.
“The Advance”11 pages
UNCLASSIFIED/ /FOil 9PPll!!lllit 1!18& 0'11kY cyl. r s JJ.r I 0.260 1.654 0.003 2 0.254 1.677 0.023 3 0.245 1.718 0.052 4 0.230 1.771 0.085 5 0.208 1.825 0.120 6 0.190 1.886 0.154 7 0.173 l.951 0.188 8 0.148 2.027 0.220 9 0.129 2.110 0.250 10 0.116 2.199 0.279 r1yyre .a., a::xdmp1e ur t:t l"l~1c1mc:tl.~rttll .._.umpun-,n&.: 1n .... --•-:,•• .......... _,,, ............ ~ .............. _ ...... ~-• .... - ■ •••.1 ---·~··· ···- in-plane lattice paramete1·s are av= a,= 10/3 mm. The ring is square, with edge length I =3 mm and tracewidth w = 0.2 mm. The substrate is 381 μm-thick Duro1d 5870 (E = 2 33, td = 0.0012 at 10 GHz, where td is the loss tangent). The cu film, from which the SRRs are patterned, is 17 μm thick. The parameters rand s are given in the table together with the associated value of μ-. (Reference 6) Electric properties of metamaterials can be similarly controlled. An example of a planar electrically-active metamaterial is shown in Figure 2. 2 I l Figure 2. Example of Another Metamaterial Component: Electric Ring Resonator (ERR). This component provides tunable resonant electric response to the incident electromagnetic field, and can be utilized for engineering the frequency-dependent dielectric permittivity c(w) . Possible application: THz and microwave absorbers. (Reference 7) UNCLASSIFIEDJ;GFOlil 8FFl&l,1k Wlli IHHsl.f
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Report, from the dia collection. The PDF is mirrored here; the original link is above. 27 pages are in the text index: search them above, or from the library's search.