Scientists at the University of California have developed a new display technology that uses a liquid filled with highly charged plastic-coated iron oxide particles, which by repelling one another form an ordered structure called colloidal photonic crystal. This substance can then be controlled with a magnet placed behind it. The microscopic spacing between the particles allows them to reflect light. Each particle is a pixel that represents a unique color. The scientists have managed to create a range of colors, and suppose this new technology could replace the LCD technology and make large displays much cheaper.
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