Transformation optics and metamaterials.

@article{Chen2010TransformationOA,
  title={Transformation optics and metamaterials.},
  author={Huanyang Chen and C. T. Chan and Ping Sheng},
  journal={Nature materials},
  year={2010},
  volume={9 5},
  pages={
          387-96
        }
}
Underpinned by the advent of metamaterials, transformation optics offers great versatility for controlling electromagnetic waves to create materials with specially designed properties. Here we review the potential of transformation optics to create functionalities in which the optical properties can be designed almost at will. This approach can be used to engineer various optical illusion effects, such as the invisibility cloak. 

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