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Letter
Nature Materials 5, 93–96 (1 February 2006) | doi:10.1038/nmat1568
Achieving centimetre-scale supercollimation in a large-area two-dimensional photonic crystal
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Abstract
Diffraction, a fundamental process in wave physics, leads to spreading of the optical beams as they propagate. However, new photonic crystal (PhC) meta-materials can be nano-engineered to generate extreme anisotropy, resulting in apparent propagation of light without diffraction.
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