The 3DMark DirectX 11 tech demo brings this scene to life with intelligent tessellation and advanced volumetric lighting using real-time light scattering.

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Researchers at the University of Arizona and Nitto Denko Technical used a blend of electrically responsive light-scattering polymers to make a holographic videoconferencing system.

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As a result there is very little scattering of light as it passes from the air into the layer of nanotubes.

BBC: Carbon nanotubes experiment results