Unlike previous such "cloaks", the new work does not employ metals, which introduce losses of light and result in imperfect cloaking. Because the approach can be scaled down further in size, researchers say this is a major step towards a cloak that would work for visible light. One of the research teams describes its miniature "carpet cloak" in the journal Nature Materials. This "carpet" design was based on a theory first described by John Pendry, from Imperial College London, in 2008. (source: news.bbc.co.uk)
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