摘要:
A sound wave generator includes one or more carbon nanotube wire structures. The one or more carbon nanotube wire structures produce sound by means of the thermoacoustic effect.
摘要:
A method for growing an array of carbon nanotubes includes the steps of: (a) providing a substrate having a first surface and a second surface opposite to the first surface; (b) forming a catalyst film on the first surface of the substrate; (c) flowing a mixture of a carrier gas and a carbon source gas over the catalyst film; (d) providing a semiconductor laser system to generate a focused laser beam; and (e) irradiating the focused laser beam on the substrate to grow an array of carbon nanotubes on the substrate.
摘要:
This apparatus and method facilitate the synthesis of a single-wall carbon nanotube array. The apparatus includes a reactor, a local heating device, a gaseous carbon supplier, and a reactant gas supplier. The reactor is configured for receiving a catalyst in a reaction zone thereof. The local heating device is configured for selectively heating the reaction zone and/or the catalyst received thereat. The gaseous carbon supplier is configured for introducing gaseous carbon into the reactor from an upstream position of the reaction zone. The reactant gas supplier is configured for introducing a reactant gas containing a carbon source gas into the reactor. A densely aligned, single-wall carbon nanotube array can be achieved due to the proximity to the catalyst of the heating device and due to the gaseous carbon supplier.
摘要:
A method of making a transparent conductive film includes providing a carbon nanotube array and a substrate. At least one carbon nanotube film is extracted from the carbon nanotube array, and stacked on the substrate to form a carbon nanotube film structure. The carbon nanotube film structure is irradiated by a laser beam along a predetermined path to obtain a predetermined pattern. The predetermined pattern is separated from the other portions of the carbon nanotube film, thereby forming the transparent conductive film from the predetermined pattern of the carbon nanotube film.
摘要:
An elastic device includes a first elastic supporter; a second elastic supporter and a carbon nanotube film. The second elastic supporter is spaced from the first elastic supporter. The carbon nanotube film has a first side fixed on the first elastic supporter and a second side opposite to the first side and fixed on the second elastic supporter. The carbon nanotube film includes a plurality of first carbon nanotubes orientated primarily along a first direction and a plurality of second carbon nanotubes having orientations different from the first direction. At least one portion of each of the second carbon nanotubes contacts with at least two adjacent first carbon nanotubes. The carbon nanotube film is capable of elastic deformation along a second direction that is substantially perpendicular to the first direction.
摘要:
A carbon nanotube film includes a plurality of carbon nanotube strings and one or more carbon nanotubes. The plurality of carbon nanotube strings are separately arranged and located side by side. Distances between adjacent carbon nanotube strings are changed when a force is applied. One or more carbon nanotubes are located between adjacent carbon nanotube strings.
摘要:
A method for growing an array of carbon nanotubes includes the steps of: (a) providing a substrate having a first substrate surface and a second substrate surface opposite to the first substrate surface; (b) forming a catalyst film on the first substrate surface; (c) flowing a mixture of a carrier gas and a first carbon source gas over the catalyst film on the first substrate surface; (d) focusing a laser beam on the second substrate surface to locally heat the substrate to a predetermined reaction temperature; and (e) growing an array of the carbon nanotubes on the first substrate surface via the catalyst film.
摘要:
A flexible thermoacoustic device includes a soft supporter and a sound wave generator. The sound wave generator is located on a surface of the softer supporter. The sound wave generator includes a carbon nanotube structure. The carbon nanotube structure includes a plurality of carbon nanotubes combined by van der Waals attractive force.
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:
The present invention relates to a method for making a thermoacoustic device. The method includes the following steps. A substrate with a surface is provided. A plurality of microspaces is formed on the surface of the substrate. A sacrifice layer is fabricated to fill the microspaces. A metal film is deposited on the sacrifice layer, and the sacrifice layer is removed. A signal input device is provided to electrically connect with the metal film.