Indeed, some believe the nanotubes are so black that they might make a new type of camouflage-one that conceals anything as a flat black blob.

事实上，有些人相信碳纳米管可以用于制造新型伪装——将任何东西伪装成平面的黑色块。

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It's a flat black slab with a touch screen, nearly indistinguishable at 15 feet from the iPhone 5 or a bevy of Android smartphones.

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Engineers from University of Michigan found they could be used to obscure objects so that they appeared to be nothing more than a flat black sheet.

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