Electrowetting is not just what a robo-baby does in his cyber-diaper. It’s a method of e-ink-like display technology under development, and a recent discovery by a University of Cincinatti engineering researcher could eventually lead to e-paper screens constructed out of e-ink on ordinary paper, rather than glass—reducing the price of e-reader displays considerably. Given that the screen is usually the most expensive part of any tablet or e-book reader, this could lead to e-ink readers that are literally disposable—while at the same time looking better than e-ink displays today. “Nothing looks better than paper for...

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