Toward A New Generation Of Paper-thin Loudspeakers

 In research that may redefine ear buds, earphones, stereo loudspeakers, and other devices for producing sound, researchers in China are reporting development of flexible loudspeakers thinner than paper that might be inserted into the ears with an index finger or attached to clothing, walls, or windows. Their report on what may be the world's thinnest loudspeakers, made from transparent carbon nanotube films, is scheduled for the December 10 issue of Nano Letters.

http://www.sciencedaily.com/releases/2008/11/081117095032.htm