The color layers in the machines start as 3D printed molds, micro-channels are then created with silicon that allow colored liquids to be pumped in to match the robots surroundings.

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Other cash-generating businesses on the horizon for publishers include subscription fees and micro-transactions for small pieces of game content sold over online channels like Xbox Live and PlayStation Network.

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In 2003, Stanford University spin-out company Cooligy showed off its Active Micro-Channel Cooling (AMC) technology which allowed fluids to circulate through hundreds of tiny channels on the upper surface of a chip.

BBC: IBM aims to cool chips with water

Aleksander Popel and his colleagues at Johns Hopkins University in Baltimore are building a model of the micro-vasculature to get a better understanding of how molecules and cells interact in these narrow channels where physical experiments are hard to perform.

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