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Twisted physics

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A group of UK scientists has light theory all tied up in a paper published in the February 2010 issue of Nature Physics. Using lasers under holographic control, Dr. Mark Dennis and fellow physicists at the universities of Bristol, Glasgow and Southampton have successfully twisted light into knots for the first time. Demonstrating such advanced control of light has important implications for laser technology and could be applied to future optical trapping schemes or superresolved fluorescence imaging. This image represents the theoretical construction of a trefoil knot. Tying...Read full article

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