Abstract: A kind of photosensitive carbon nanotube slurry is disclosed. The photosensitive carbon nanotube slurry includes a first mixture and a second mixture. The first mixture includes carbon nanotubes, conducting particles, and a first organic carrier. The second mixture includes a photo polymerization monomer, a photo initiator, and a second organic carrier. The weight percentage of the first mixture and the second mixture ranges from about 50% to about 80% and about 20% to about 50%, respectively. Methods for making the photosensitive carbon nanotube slurry and methods for making cathode emitters using the photosensitive carbon nanotube slurry are also disclosed.

Abstract: A kind of photosensitive carbon nanotube slurry is disclosed. The photosensitive carbon nanotube slurry includes a first mixture and a second mixture. The first mixture includes carbon nanotubes, conducting particles, and a first organic carrier. The second mixture includes a photo polymerization monomer, a photo initiator, and a second organic carrier. The weight percentage of the first mixture and the second mixture ranges from about 50% to about 80% and about 20% to about 50%, respectively. Methods for making the photosensitive carbon nanotube slurry and methods for making cathode emitters using the photosensitive carbon nanotube slurry are also disclosed.

Abstract: An X-ray tube includes a vacuum tube. A field emission cathode structure and an anode spaced from each other are located in the vacuum tube. The field emission cathode structure includes a first metal plate, a second metal plate, and an electron emitter. The electron emitter is fixed between the first metal plate and the second metal plate. One end of the electron emitter extends out of the first metal plate and the second metal plate to act as an electron emission end.

Abstract: A field emission cathode device includes a cathode electrode. An electron emitter is electrically connected to the cathode electrode, wherein the electron emitter includes a number of sub-electron emitters. An electron extracting electrode is spaced from the cathode electrode by a dielectric layer, wherein the electron extracting electrode defines a through-hole. The distances between an end of each of the sub-electron emitters away from the cathode electrode and a sidewall of the through-hole are substantially equal.

Abstract: An inkjet ink includes carbon nanotubes, flake graphites, an organic carrier, a binder, a surfactant, a film enhancer and a solvent. A method for making an inkjet ink includes dispersing the plurality of carbon nanotubes in the surfactant solvent to form a first mixture, dispersing the plurality of flake graphites in the organic carrier solvent to form a second mixture, adding the film enhancer into the second mixture to form a third mixture, and mixing the first mixture and the third mixture.

Abstract: A method for making carbon nanotube field emitter includes providing a carbon nanotube array formed on a surface of a substrate. A plurality of carbon nanotubes of the carbon nanotube array is selected and pulled out a carbon nanotube film by a drawing tool, wherein the carbon nanotube film includes a plurality of carbon nanotubes oriented along a fixed direction. The carbon nanotube film is cut to a plurality of uniform carbon nanotube sub-films along the fixed direction. The plurality of carbon nanotube sub-films is treated to a plurality of carbon nanotube yarns. The plurality of carbon nanotube yarns is fixed on a surface of a conductive base, and cutting off the plurality of carbon nanotube yarns by a laser beam, to form a carbon nanotube field emitter.

Abstract: A kind of photosensitive carbon nanotube slurry is disclosed. The photosensitive carbon nanotube slurry includes a first mixture and a second mixture. The first mixture includes carbon nanotubes, conducting particles, and a first organic carrier. The second mixture includes a photo polymerization monomer, a photo initiator, and a second organic carrier. The weight percentage of the first mixture and the second mixture ranges from about 50% to about 80% and about 20% to about 50%, respectively. Methods for making the photosensitive carbon nanotube slurry and methods for making cathode emitters using the photosensitive carbon nanotube slurry are also disclosed.

Abstract: An ionization vacuum gauge includes a cathode, an anode and an ion collector. The ion collector component is located at one side of the anode component and spaced from the anode component. The cathode component is located at another side of the anode component and includes an electron emitter, which extends toward the anode component from the cathode component. The electron emitter includes at least one carbon nanotube wire.

Abstract: An inkjet ink includes carbon nanotubes, flake graphites, an organic carrier, a binder, a surfactant, a film enhancer and a solvent. A method for making an inkjet ink includes dispersing the plurality of carbon nanotubes in the surfactant solvent to form a first mixture, dispersing the plurality of flake graphites in the organic carrier solvent to form a second mixture, adding the film enhancer into the second mixture to form a third mixture, and mixing the first mixture and the third mixture.