With funding from the NASA Institute for Advanced Concepts, in Atlanta, a team of researchers have been investigating for the past seven years a flapping-wing plane that is ultraslim, unmanned, solar-powered and made of strong, lightweight materials. The plane's body and wings would consist of a plasticlike material called an ionic polymer-metal composite that deform when exposed to an electric field. On top of the composite wings would be paper-thin sheets of photovoltaic material and lithium-ion batteries layered on by thin-film deposition. The solid-state aircraft's potential uses include gathering scientific data, relaying communications and surveying terrain to name a few.