Cornell and Wieman were trying to cool a puff of rubidium gas to within a few billionths of a degree of absolute zero — colder than any place in nature, even the 2.73 kelvins of space. (sciencemag.org)
The slide is made of a «nanoplasmonic» material — its surface is coated in millions of gold nanostructures, each just a few billionths of a square meter in size. (sciencedaily.com)