摘要:
A method for making a hollow heater is provided. The method includes providing a hollow supporter and, the hollow supporter defines a hollow space. A carbon nanotube structure is made and then fixed on a surface of the hollow supporter. A first electrode and a second electrode is provided and electrically connected to the carbon nanotube structure.
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.
摘要:
An apparatus includes a hollow heater. The hollow heater includes a hollow supporter, a heating element and at least two electrodes. The hollow supporter has an inner surface and an outer surface. The heating element is attached on one of the inner and the outer surfaces of the hollow supporter. The heat element comprises of a carbon nanotube film comprising of carbon nanotubes arranged along a same direction. The at least two electrodes are electrically connected to the heating element.
摘要:
A method for making zinc aluminate nano-material, the method comprises the following steps. Firstly, providing a growing substrate and a growing device, and the growing device comprising a heating apparatus and a reacting room. Secondly, placing the growing substrate and a quantity of reacting materials into the reaction room, and the reacting materials comprising zinc and aluminum. Thirdly, introducing an oxygen-containing gas into the reaction room. Lastly, heating the reaction room to a temperature of 660˜1100° C.
摘要:
A method for making a thin film transistor, the method includes the steps of: providing a plurality of carbon nanotubes and an insulating substrate; flocculating the carbon nanotubes to acquire a carbon nanotube structure, applying the carbon nanotube structure on the insulating substrate; forming a source electrode, a drain electrode, and a gate electrode; and covering the carbon nanotube structure with an insulating layer. The source electrode and the drain electrode are connected to the carbon nanotube structure, the gate electrode is electrically insulated from the carbon nanotube structure by the insulating layer.
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 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:
An exemplary electron emission device includes an electron emitter, an anode opposite to and spaced apart from the electron emitter, a first power supply circuit, and a second power supply circuit. The first power supply circuit is configured for electrically connecting the electron emitter and the anode with a power supply to generate an electric field between the electron emitter and the anode. The second power supply circuit is configured for electrically connecting the electron emitter with a power supply to supply a heating current for heating the electron emitter whereby electrons emit therefrom. Methods for generating an emission current with a relatively higher stability also are provided.
摘要:
A method for making a thin film transistor, the method comprising the steps of: providing a growing substrate; applying a catalyst layer on the growing substrate; heating the growing substrate with the catalyst layer in a furnace with a protective gas therein, supplying a carbon source gas and a carrier gas at a ratio ranging from 100:1 to 100:10, and growing a carbon nanotube layer on the growing substrate; forming a source electrode, a drain electrode, and a gate electrode; and covering the carbon nanotube layer with an insulating layer, wherein the source electrode and the drain electrode are electrically connected to the single-walled carbon nanotube layer, the gate electrode is opposite to and electrically insulated from the single-walled carbon nanotube layer.
摘要:
A method for manufacturing open-ended carbon nanotubes is described. The method includes steps of: providing a substrate having a catalyst layer formed thereon; placing the substrate in a reaction chamber; introducing a carbon source gas containing carbon element into the reaction chamber for growing carbon nanotubes form the catalyst layer; promptly reducing a concentration of the carbon source gas when the growth of carbon nanotubes in process, thereby ceasing the growth of the carbon nanotubes instantly; and separating the carbon nanotubes from the catalyst layer.
摘要:
A method for making a liquid crystal display screen includes the following steps. Firstly, providing a base including a surface. Secondly, forming carbon nanotube structure on the surface of the base to obtain a first electrode plate preform, the carbon nanotubes of each carbon nanotube structure being oriented along the extending direction thereof. Thirdly, forming a fixing layer to cover the carbon nanotube structure, thereby obtaining a first electrode plate. Fourthly, repeating the above-described steps, thereby obtaining a second electrode plate. Lastly, forming a liquid crystal layer between the fixing layers of the first electrode plate and the second electrode plate, the carbon nanotubes of the first electrode plate being perpendicular to that of the second electrode plate, thereby forming the liquid crystal display screen.