nanocardboard that acts as thermal insulator

Engineers from the University of Pennsylvania demonstrated aluminum oxide film that is only tens of nanometers thick and is 10,000 times as stiff as a solid plate of the same mass. According to a report from the university, a square centimeter of the nanocardboard, as the engineers termed it, weighs less than a thousandth of a gram. [COOLINGZONE] via [Frostytech.com]