A cup-sized device using silicon nanotechnology may eventually replace life-constraining dialysis for patients with failing kidneys. The device, developed by researchers at the University of California, San Francisco, is small enough to be implanted. The key is the nanotech that allows "a dialysis filter that would be one-twentieth the size of what's commercially available and would require so little power that we could drive it just off blood pressure alone," said Shuvo Roy, a UCSF associate professor of bioengineering and therapeutic sciences.

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