Patent application number | Description | Published |
20080220182 | Laser-based method for growing array of carbon nanotubes - 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. | 09-11-2008 |
20080220686 | Laser-based method for making field emission cathode - A method for making a field emission cathode 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 conductive film on the first substrate surface; (c) forming a light absorption layer on the conductive film; (d) forming a catalyst film on the light absorption layer; (e) flowing a mixture of a carrier gas and a carbon source gas over the catalyst film; (f) focusing a laser beam on the catalyst film and/or on the second substrate surface to locally heat the catalyst to a predetermined reaction temperature; and (g) growing an array of the carbon nanotubes via the catalyst film to form a field emission cathode. | 09-11-2008 |
20080268739 | Laser-based method for making field emission cathode - A method for making a field emission cathode 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 conductive film on the first substrate surface; (c) forming a catalyst film on the conductive film, the catalyst film including carbonaceous material; (d) flowing a mixture of a carrier gas and a carbon source gas over the catalyst film; (e) focusing a laser beam on the catalyst film and/or on the second substrate surface to locally heat the catalyst to a predetermined reaction temperature; and (f) growing an array of the carbon nanotubes via the catalyst film to form a field emission cathode. | 10-30-2008 |
20080299308 | Method for making branched carbon nanotubes - A method for making a branched carbon nanotube structure includes steps, as follows: providing a substrate and forming a buffer layer on a surface of the substrate; depositing a catalyst layer on the surface of the buffer layer; putting the substrate into a reactive device; and forming the branched carbon nanotubes on the surface of the buffer layer and along the surface of the buffer layer by a chemical vapor deposition method. The material of the catalyst layer is non-wetting with the material of the buffer layer at a temperature that the branched carbon nanotube are formed. A yield of the branched carbon nanotubes in the structure can reach about 50%. | 12-04-2008 |
20090029052 | Method for making composite material with a high-density array of carbon nanotubes - A method for producing a composite material with high-density array of carbon nanotubes, includes the steps of: (a) providing a substrate with an array of carbon nanotubes formed thereon; (b) applying a liquid polymer precursor to the array of carbon nanotubes such that the liquid polymer precursor infuses into the array of carbon nanotubes; (c) compressing the array of carbon nanotubes in directions parallel to a first axis parallel to a surface of the substrate to form a high-density array of carbon nanotubes with a density in the approximate range from 0.1 g/cm | 01-29-2009 |
20090053515 | Thermally conductive pad with an array of carbon nanotubes and method for making the same - The present invention relates to a thermally conductive pad and a method for producing the same. The thermally conductive pad includes an array of carbon nanotubes and a polymer matrix. The array of carbon nanotubes has a density in the approximate range from 0.1 g/cm | 02-26-2009 |
20100277735 | APPARATUS FOR MANUFACTURING CARBON NANOTUBES - An apparatus for manufacturing carbon nanotubes includes an observation device, a work stage, a laser device, and a lighting device. The observation device includes an observation tube, an observation window arranged on the top of the observation tube, a first half-reflecting, pellicle mirror installed with an angle 45° in the observation tube, and a second half-reflecting, pellicle mirror installed parallel to the first half-reflecting, pellicle mirror. The work stage is disposed under and separated from the observation tube with a certain distance. The laser device is arranged perpendicular to the observation device and corresponding to the first half-reflecting, pellicle mirror. The lighting device is arranged perpendicular to the observation device and corresponding to the second half-reflecting, pellicle mirror. The observation device, the laser device and the lighting device are optically conjugated/linked with one another. | 11-04-2010 |
20120064258 | METHOD FOR MANUFACTURING CARBON NANOTUBES - A method for manufacturing carbon nanotubes includes providing a substrate having a first surface and a second surface opposite to the first surface, forming a catalyst film on the first surface of the substrate, wherein the catalyst film comprises a carbonaceous material, flowing a mixture of a carrier gas and a carbon source gas across the catalyst film, and irradiating a focused laser beam on the substrate to grow a carbon nanotube array from the substrate. | 03-15-2012 |
20140205765 | METHOD FOR MANUFACTURING CARBON NANOTUBES - A method for manufacturing carbon nanotubes is provided. First, a substrate having a first surface and a second surface opposite to the first surface is provided. Second, a catalyst film is formed on the first surface of the substrate, wherein the catalyst film comprises a carbonaceous material. Third, a mixture of a carrier gas and a carbon source gas is flew across the catalyst film. Forth, a focused laser beam is irradiated on the substrate to grow a carbon nanotube array from the substrate. | 07-24-2014 |
20140363586 | Laser-based method for growing an array of carbon nanotubes - A method for growing an array of carbon nanotubes includes the steps of: (a) providing a substrate; (b) forming a catalyst film on the substrate, the catalyst film including carbonaceous material; (c) introducing a mixture of a carrier gas and a carbon source gas flowing across the catalyst film; (d) focusing a laser beam on the catalyst film to locally heat the catalyst to a predetermined reaction temperature; and (e) growing an array of the carbon nanotubes from the substrate. | 12-11-2014 |