Suntimes and News-Gazette have a story about two U of I professors who created a proof to build a invisibility cloak
http://www.suntimes.com/news/metro/1030085,CST-NWS-invis29.article
Harley Johnson, an associate professor of mechanical science and engineering, and research associate Dong Xiao offered mathematical proof that coating a container with multiple concentric rings -- made of silicon and separated by air -- could, in fact, cloak an object from human sight.
The U. of I. scientists' simulation demonstrated that those wavelengths can be bent around a container coated with the rings so you wouldn't notice the container or its contents. Another layer of rings blocks the light from penetrating the container, further cloaking it from view.
The next step in the cloaking research is to re-create the experiment in a lab -- which Johnson says he hopes will be done within the next several months with the help of colleague John Rogers, another professor on the Urbana-Champaign campus.
"It wouldn't be hard to scale up to some extent,'' Johnson says.
http://www.news-gazette.com/news/u_of_i/2008/07/06/science_fiction_might_soon_evolve_into
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