David Kirkpatrick

November 14, 2008

Nanotube speakers

Filed under: Arts, Media, Science, Technology — Tags: , , , , , — David Kirkpatrick @ 2:32 am

Just wow.

From the Technology Review link:

Made by researchers at Tsinghua University in Beijing, the carbon nanotube speakers can play music just as loud and just as high quality as conventional loudspeakers do, even while being flexed and stretched.

Conventional loudspeakers use magnets and moving parts to produce sound-pressure waves. The nanospeakers work by the thermoacoustic effect. Alternating electrical current running through the thin films of nanotubes heats the surrounding air, causing it to expand and contract, creating sound waves.

These transparent thin-film speakers could be mounted on displays, eliminating the need for separate speakers. But one of the coolest things about the loudspeakers is that they’re flexible and stretchable, allowing the researchers to imagine singing jackets.

The research was published online in the journal Nano Letters.