Some kind of organic metallic alloy stronger than titanium or carbon steel, harder than diamonds.

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Helium-cooled superconducting coils, typically made of an alloy of niobium and titanium encased in copper cladding, create magnetic fields ten times stronger than similar-size permanent magnets can muster.

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It's encased in aluminum alloy but has a similar metallic look to the Titanium Powerbooks that have proven so popular for Apple Computer (nasdaq: APPL - news - people ) over the last few years.

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