Revision as of 20:54, 19 October 2006 edit JCO312 (talk \| contribs) Extended confirmed users, Rollbackers 6,185 edits →Real world experimentation ← Previous edit		Revision as of 20:55, 19 October 2006 edit undo JCO312 (talk \| contribs) Extended confirmed users, Rollbackers 6,185 edits →Metamaterial research Next edit →
Line 96: Optical [[metamaterial]]s have featured in several recent proposals for invisibility schemes. "Metamaterials" refers to materials are a composite of two or more optical materials combined into a structure that effectively has new properties quite different from its constituents (most famously, a [[negative refractive index]] is possible). In February 14th, [[2005]], Andrea Alù and Nader Engheta at the [[University of Pennsylvania]] announced in a research paper that [[plasmon]]s could be used to cancel out visible light or radiation coming from an object. This 'plasmonic cover' would work by suppressing light scattering by resonating with illuminated light, which could render objects "nearly invisible to an observer"." The plasmonic screen would have to be tuned to the object being hidden, and would only suppress a specific wavelength: An object made invisible in red light would still be visible in multiwavelength daylight. A concept for a cloaking device was put forward by two mathematicians in one of the [[UK]]s [[Royal Society]] journals [http://news.bbc.co.uk/2/hi/science/nature/4968338.stm]. Shortly afterwards, blueprints for building a cloaking device were put forward in the journal [[Science (journal)\|Science]] by researchers in the US and UK [http://news.bbc.co.uk/1/hi/sci/tech/5016068.stm]. However, "Scientists not involved in the work said the plans appear feasible but that they would require more-advanced substances than currently exist" [http://www.boston.com/news/globe/health_science/articles/2006/05/29/scientists_shed_new_light_on_invisibility/].

Cloaking device: Difference between revisions