Harvard doctoral student have shown that treated diamond coatings can keep water frozen at body temperature. This discovery will have could be used in future medical implants. Gadget makers have been thinking of using diamond coatings in medical implants because of their hardness. However concerns have been raised as diamond might have a higher chance of causing blood clots than other materials because coatings are difficult to get absolutely smooth, abrasion of the tissue surrounding the implant. But Wissner-Gross found out that a two-nanometer layer of ice would just fill the pits in the diamond surface, smoothing it out and upsetting clotting proteins from attaching to the surface.

Wissner-Gross said the research grew out of an interest in the physical interaction of nanostructured surfaces with molecules that are biologically relevant, such as water. Diamond films are growing cheaper, and as their cost declines the array of possible uses of the material grows wider.
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