Yes and there's a company that makes "nanofluid" for use as coolant in liquid-cooled PCs: http://www.icedragoncooling.com/index.asp?pagename=Technology_Backgrou

Yes and there's a company that makes "nanofluid" for use as coolant in liquid-cooled PCs: http://www.icedragoncooling.com/index.asp?pagename=Technology_Background http://www.icedragoncooling.com/index.asp?pagename=Technolog... they claim 20% improvement over distilled water.