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The Quest for Ultimate Electromagnetics using Spatial Transformations (QUEST)
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Community News - Metamaterials and particle physics
Spatial transformations have been used to design a metamaterial that controls Cherenkov radiation. This radiation is emitted when a charged particle passes through a medium faster than light propagates through that medium (i.e., not a vacuum), and forms a cone shape. Normally, high momentum (energy) particles have indistibuishable Cherenkov cones, but the shape of the cone and its angle with respect to the particle's direction can be controlled with the new metamaterial, potentially giving each particle a unique means of identification. The research is detailed in the article "Controlling Cherenkov Radiation with Transformation-Optical Metamaterials", in Physical Review Letters.