The quarter-inch thick device, built by the publisher Hearst, features electronic ink mounted on a flexible microfoil and an 11.5-inch screen, making it the biggest, thinnest e-reader yet.

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E-Ink (an MIT spinoff) and Gyricon (a Xerox Palo Alto Research Center spinoff) are making similar products but with a less efficient process.

FORBES: Nanotechnology: A New World Is Born