摘要:
A device for making a carbon nanotube film includes a substrate having a surface, and two substantially parallel slits defined on the surface of the substrate. The two substantially parallel slits extend into the substrate from the surface of the substrate. A growing surface is defined by the two substantially parallel slits and located between the two substantially parallel slits.
摘要:
A device for making a carbon nanotube film includes a substrate and a catalyst layer on the substrate. The catalyst layer has two substantially parallel sides. The present disclosure also provides a method for making a carbon nanotube film. The catalyst layer is annealed at a high temperature in air. The annealed catalyst layer is heated up to a predetermined reaction temperature in a furnace with a protective gas therein. A carbonaceous gas is supplied into the furnace to grow a carbon nanotube array having two substantially parallel side faces. A carbon nanotube film is drawn from the carbon nanotube array. A drawing direction is substantially parallel to the two substantially parallel side faces of the carbon nanotube array.
摘要:
A carbon nanotube film includes a plurality of carbon nanotubes. The plurality of carbon nanotubes is arranged approximately along a same first direction. The plurality of carbon nanotubes are joined end to end by van der Waals attractive force therebetween. The carbon nanotube film has a uniform width. The carbon nanotube film has substantially the same density of the carbon nanotubes along a second direction perpendicular to the first direction. The change in density across the width is within 10 percent. The present application also relates to a carbon nanotube film precursor and a method for making the carbon nanotube film.
摘要:
A device for making a carbon nanotube film includes a substrate and a catalyst layer on the substrate. The catalyst layer has two substantially parallel sides. The present disclosure also provides a method for making a carbon nanotube film. The catalyst layer is annealed at a high temperature in air. The annealed catalyst layer is heated up to a predetermined reaction temperature in a furnace with a protective gas therein. A carbonaceous gas is supplied into the furnace to grow a carbon nanotube array having two substantially parallel side faces. A carbon nanotube film is drawn from the carbon nanotube array. A drawing direction is substantially parallel to the two substantially parallel side faces of the carbon nanotube array.
摘要:
A method for making a carbon nanotube film includes the steps of providing an array of carbon nanotubes, treating the array of carbon nanotubes by plasma, and pulling out a carbon nanotube film from the array of carbon nanotubes treated by the plasma.
摘要:
A method for making a carbon nanotube film includes the steps of providing an array of carbon nanotubes, treating the array of carbon nanotubes by plasma, and pulling out a carbon nanotube film from the array of carbon nanotubes treated by the plasma.
摘要:
A method for stretching a carbon nanotube film includes providing one or more carbon nanotube films and one or more elastic supporters, attaching at least one portion of the one or more carbon nanotube films to the one or more elastic supporters, and stretching the elastic supporters.
摘要:
The present disclosure relates to a method of producing sound waves. In the method, a carbon nanotube structure is provided. A signal is applied to the carbon nanotube structure and cause the carbon nanotube structure to produce heat. The heat is transferred to a medium in contact with the carbon nanotube structure to cause a thermoacoustic effect for producing sound waves.
摘要:
An apparatus includes an electromagnetic signal device, a medium, and a sound wave generator. The sound wave generator includes a carbon nanotube structure. The carbon nanotube structure includes one or more carbon nanotube films. Each carbon nanotube film includes a plurality of carbon nanotubes entangled with each other. The electromagnetic signal device transmits an electromagnetic signal to the carbon nanotube structure. The carbon nanotube structure converts the electromagnetic signal into heat. The heat transfers to the medium and causes a thermoacoustic effect.
摘要:
A sound wave generator includes one or more carbon nanotube films. The carbon nanotube film includes a plurality of carbon nanotubes substantially parallel to each other and joined side by side via van der Waals attractive force. The one or more carbon nanotube films produce sound by means of the thermoacoustic effect.