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Lin Xiao,§
Zhuo Chen,§
Chen Feng
Liang Liu
Zai-Qiao Bai
Yang Wang
Li Qian
Yuying Zhang
Qunqing Li
Kaili Jiang
Shoushan Fan

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Abstract

We found that very thin carbon nanotube films, once fed by sound frequency electric currents, could emit loud sounds. This phenomenon
could be attributed to a thermoacoustic effect. The ultra small heat capacity per unit area of carbon nanotube thin films leads to a wide
frequency response range and a high sound pressure level. On the basis of this finding, we made practical carbon nanotube thin film
loudspeakers, which possess the merits of nanometer thickness and are transparent, flexible, stretchable, and magnet-free. Such a singleelement
thin film loudspeaker can be tailored into any shape and size, freestanding or on any insulating surfaces, which could open up new
applications of and approaches to manufacturing loudspeakers and other acoustic devices.

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for more details, please visit
http://nanoqedresources/Nano%20Letter%20Paper.PDF

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