Patents by Inventor Chun-Xiang Luo
Chun-Xiang Luo has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 9394625Abstract: 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.Type: GrantFiled: March 25, 2014Date of Patent: July 19, 2016Assignees: Tsinghua University, HON HAI PRECISION INDUSTRY CO., LTD.Inventors: Chun-Xiang Luo, Kai-Li Jiang, Shou-Shan Fan
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Patent number: 9023477Abstract: 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/cm3 to 2.2 g/cm3. The array of carbon nanotubes is incorporated in the polymer matrix by way of polymerization of a pre-polymer of the polymer matrix in situ. Moreover, the method for producing the thermally conductive pad is also included.Type: GrantFiled: December 20, 2007Date of Patent: May 5, 2015Assignees: Tsinghua University, Hon Hai Precision Industry Co., Ltd.Inventors: Chun-Xiang Luo, Liang Liu, Kai-Li Jiang, Chang-Hong Liu, Shou-Shan Fan
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Patent number: 8926934Abstract: 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.Type: GrantFiled: November 2, 2007Date of Patent: January 6, 2015Assignees: Tsinghua University, Hon Hai Precision Industry Co., Ltd.Inventors: Kai-Li Jiang, Zhuo Chen, Chun-Xiang Luo, Shou-Shan Fan
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Publication number: 20140363586Abstract: 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.Type: ApplicationFiled: November 2, 2007Publication date: December 11, 2014Applicants: HON HAI Precision Industry CO., LTD., Tsinghua UniversityInventors: Kai-Li Jiang, Zhuo Chen, Chun-Xiang Luo, Shou-Shan Fan
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Patent number: 8821975Abstract: 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%.Type: GrantFiled: October 26, 2007Date of Patent: September 2, 2014Assignees: Tsinghua University, Hon Hai Precision Industry Co., Ltd.Inventors: Chun-Xiang Luo, Liang Liu, Kai-Li Jiang, Shou-Shan Fan
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Publication number: 20140205765Abstract: 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.Type: ApplicationFiled: March 25, 2014Publication date: July 24, 2014Applicants: HON HAI PRECISION INDUSTRY CO., LTD., TSINGHUA UNIVERSITYInventors: CHUN-XIANG LUO, KAI-LI JIANG, SHOU-SHAN FAN
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Patent number: 8481128Abstract: 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.Type: GrantFiled: November 2, 2007Date of Patent: July 9, 2013Assignees: Tsinghua University, Hon Hai Precision Industry Co., Ltd.Inventors: Zhuo Chen, Chun-Xiang Luo, Kai-Li Jiang, Shou-Shan Fan
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Publication number: 20120064258Abstract: 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.Type: ApplicationFiled: November 17, 2011Publication date: March 15, 2012Applicants: HON HAI PRECISION INDUSTRY CO., LTD., TSINGHUA UNIVERSITYInventors: CHUN-XIANG LUO, KAI-LI JIANG, SHOU-SHAN FAN
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Patent number: 8088454Abstract: 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.Type: GrantFiled: November 2, 2007Date of Patent: January 3, 2012Assignees: Tsinghua University, Hon Hai Precision Industry Co., Ltd.Inventors: Zhuo Chen, Chun-Xiang Luo, Kai-Li Jiang, Shou-Shan Fan
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Patent number: 8077318Abstract: 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.Type: GrantFiled: November 12, 2007Date of Patent: December 13, 2011Assignees: Tsinghua University, Hon Hai Precision Industry Co., Ltd.Inventors: Chun-Xiang Luo, Kai-Li Jiang, Shou-Shan Fan
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Patent number: 8048397Abstract: 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.Type: GrantFiled: November 2, 2007Date of Patent: November 1, 2011Assignees: Tsinghua University, Hon Hai Precision Industry Co., Ltd.Inventors: Zhuo Chen, Chun-Xiang Luo, Kai-Li Jiang, Shou-Shan Fan
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Publication number: 20100277735Abstract: 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.Type: ApplicationFiled: November 12, 2007Publication date: November 4, 2010Applicants: TSINGHUA UNIVERSITY, HON HAI PRECISION INDUSTRY CO., LTD.Inventors: CHUN-XIANG LUO, KAI-LI JIANG, SHOU-SHAN FAN
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Patent number: 7820133Abstract: 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.Type: GrantFiled: November 2, 2007Date of Patent: October 26, 2010Assignees: Tsinghua University, Hon Hai Precision Industry Co., Ltd.Inventors: Zhuo Chen, Chun-Xiang Luo, Kai-Li Jiang, Shou-Shan Fan
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Patent number: 7780940Abstract: A method for making 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) generating a laser beam using a galvanometric scanning system, directing the laser beam toward/on one of the first surface and the second surface to locally heat the catalyst film to a predetermined temperature; and (e) growing an array of the carbon nanotubes from the substrate.Type: GrantFiled: November 2, 2007Date of Patent: August 24, 2010Assignees: Tsinghua University, Hon Hai Precision Industry Co., Ltd.Inventors: Zhuo Chen, Chun-Xiang Luo, Kai-Li Jiang, Shou-Shan Fan
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Publication number: 20090053515Abstract: 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/cm3 to 2.2 g/cm3. The array of carbon nanotubes is incorporated in the polymer matrix by way of polymerization of a pre-polymer of the polymer matrix in situ. Moreover, the method for producing the thermally conductive pad is also included.Type: ApplicationFiled: December 20, 2007Publication date: February 26, 2009Applicants: Tsinghua University, HON HAI Precision Industry CO., LTD.Inventors: Chun-Xiang Luo, Liang Liu, Kai-Li Jiang, Chang-Hong Liu, Shou-Shan Fan
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Publication number: 20090029052Abstract: 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/cm3 to 2.2 g/cm3; and (d) polymerizing the liquid polymer precursor to form a composite material comprising a polymer matrix with the high-density array of carbon nanotubes incorporated therein.Type: ApplicationFiled: December 20, 2007Publication date: January 29, 2009Applicants: Tsinghua University, HON HAI Precision Industry CO., LTD.Inventors: Chun-Xiang Luo, Liang Liu, Kai-Li Jiang, Chang-Hong Liu, Shou-Shan Fan
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Publication number: 20080299308Abstract: 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%.Type: ApplicationFiled: October 26, 2007Publication date: December 4, 2008Applicants: Tsinghua University, HON HAI Precision Industry CO., LTD.Inventors: Chun-Xiang Luo, Liang Liu, Kai-Li Jiang, Shou-Shan Fan
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Publication number: 20080268739Abstract: 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.Type: ApplicationFiled: November 2, 2007Publication date: October 30, 2008Applicants: Tsinghua University, HON HAI Precision Industry CO., LTD.Inventors: Zhuo Chen, Chun-Xiang Luo, Kai-Li Jiang, Shou-Shan Fan
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Publication number: 20080220686Abstract: 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.Type: ApplicationFiled: November 2, 2007Publication date: September 11, 2008Applicants: Tsinghua University, HON HAI Precision Industry CO., LTD.Inventors: Zhuo Chen, Chun-Xiang Luo, Kai-Li Jiang, Shou-Shan Fan
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Publication number: 20080220182Abstract: 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.Type: ApplicationFiled: November 2, 2007Publication date: September 11, 2008Applicants: Tsinghua University, HON HAI Precision Industry CO., LTD.Inventors: Zhuo Chen, Chun-Xiang Luo, Kai-Li Jiang Jiang, Shou-Shan Fan