Abstract: A method of making a stretchable capacitor electrode-conductor structure is provided. An elastic substrate is pre-stretched in a first direction and a second direction, to obtain a pre-stretched elastic substrate. A carbon nanotube active material composite layer is laid on a surface of the pre-stretched elastic substrate. The pre-stretching the elastic substrate in the first direction and the second direction is removed to form a plurality of wrinkles on a surface of the carbon nanotube active material composite layer. The carbon nanotube active material composite layer is processed to obtain a capacitor electrode and a conductor structure.

Abstract: The disclosure relates to a nanotube film structure. The nanotube film structure includes at least one nanotube film. The at least one nanotube film includes a plurality of nanotubes orderly arranged and combined with each other by ionic bonds. The nanotube film is fabricated by using the template of carbon nanotube film. The carbon nanotube film is drawn from supper aligned carbon nanotube array and includes a plurality of carbon nanotubes joined end to end.

Abstract: A thermoacoustic device includes a substrate, at least two sound wave generators and at least two signal input devices. The substrate has at least two surfaces. Each of the at least two sound wave generators is located on each of the at least two surfaces. At least one of the at least two sound wave generator includes a carbon film. The carbon film includes at least one carbon nanotube layer and at least one graphene layer stacked with each other. The at least two signal input devices are configured to input signals to the at least two sound wave generator in a one by one manner.