Inkjet Hologram Printing Now Possible

Vivid holographic images and text can now be produced by means of an ordinary inkjet printer. This new method, developed by a team of scientists from ITMO University, is expected to significantly reduce the cost and time needed to create the so-called rainbow holograms, commonly used for security purposes, to protect valuable items, such as credit cards and paper currency, from piracy and falsification. The results of the study were published in Advanced Functional Materials scientific journal o...
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Old laptop batteries could power slums.

Old laptop batteries still have enough life in them to power homes in slums, researchers have said. An IBM study analyzed a sample of discarded batteries and found 70% had enough power to keep an LED light on more than four hours a day for a year. Researchers said using discarded batteries is cheaper than existing power options, and also helps deal with the mounting e-waste problem. The IBM team created what they called an UrJar, a device that uses lithium-ion cells from the old batteries to ...
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New graphene based inks for high-speed manufacturing of printed electronics.

Developed by researchers at the University of Cambridge in collaboration with Cambridge-based Technology Company Novalia, the method allows graphene and other electrically conducting materials to be added to conventional water-based inks and printed using typical commercial equipment. This is the first time that graphene has been used for printing on a large-scale commercial printing press at high speed. A low-cost, high-speed method for printing graphene inks using a conventional roll-to-roll p...
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