Abstract:
An object of the present invention is to provide a nanotube-nanohorn complex having a high aspect ratio, also having high dispersibility, having controlled diameter, and having high durability at a low cost. According to the present invention, a carbon target containing a catalyst is evaporated with a laser ablation method to synthesize a structure including both of a carbon nanohorn aggregate and a carbon nanotube.
Abstract:
Compositions of carbon nanoflakes are coated with a low Z compound, where an effective electron emission of the carbon nanoflakes coated with the low Z compound is improved compared to an effective electron emission of the same carbon nanoflakes that are not coated with the low Z compound or of the low Z compound that is not coated onto the carbon nanoflakes. Compositions of chromium oxide and molybdenum carbide-coated carbon nanoflakes are also described, as well as applications of these compositions. Carbon nanoflakes are formed and a low Z compound coating, such as a chromium oxide or molybdenum carbide coating, is formed on the surfaces of carbon nanoflakes. The coated carbon nanoflakes have excellent field emission properties.
Abstract:
A manufacturing method of an electron-emitting device including the steps of: preparing a base substrate provided with an insulating or semi-conducting layer in advance and exposing the layer to an atmosphere which contains neutral radical containing hydrogen. It is preferable that the insulating or semi-conducting layer contains metal particles; the insulating or semi-conducting layer is a film containing carbon as a main component; the neutral radical containing hydrogen contains any of H., CH3., C2H5., and C2H. or mixture gas thereof; compared with a density of a charged particle in the atmosphere, a density of the neutral radical containing hydrogen in the atmosphere is more than 1,000 times; and a step of exposing the insulating or semi-conducting layer to the atmosphere is a step of making a hydrogen termination by using a plasma apparatus provided with a bias grid.
Abstract:
A manufacturing method of an electron-emitting device including the steps of: preparing a base substrate provided with an insulating or semi-conducting layer in advance and exposing the layer to an atmosphere which contains neutral radical containing hydrogen. It is preferable that the insulating or semi-conducting layer contains metal particles; the insulating or semi-conducting layer is a film containing carbon as a main component; the neutral radical containing hydrogen contains any of H., CH3., C2H5., and C2H. or mixture gas thereof; compared with a density of a charged particle in the atmosphere, a density of the neutral radical containing hydrogen in the atmosphere is more than 1,000 times; and a step of exposing the insulating or semi-conducting layer to the atmosphere is a step of making a hydrogen termination by using a plasma apparatus provided with a bias grid.
Abstract:
A method of manufacturing a field emission electrode includes humidification processing to absorb water at a surface of an electron emission film emitting electrons as a result of application of a voltage, and voltage application processing to apply an aging voltage between the humidified electron emission film and an electrode provided facing the electron emission film.
Abstract:
A method is provided for fabricating an electron emission source which can attain improved electron emission efficiency and has simplified manufacturing processes. Also provided are an electron emission display device and an electron emission display device fabricated using the method of fabricating an electron emission source. The method includes forming an electrode, forming a carbide compound thin film on the electrode and forming a carbide-induced carbon thin film layer from the carbide compound thin film using an etching gas. The electron emission device and the electron emission display device each include a first electrode, a second electrode disposed to face the first electrode, and a carbide-induced carbon thin film layer formed to be electrically connected to f the first electrode or the second electrode.
Abstract:
An object of the present invention is to provide a nanotube-nanohorn complex having a high aspect ratio, also having high dispersibility, having controlled diameter, and having high durability at a low cost. According to the present invention, a carbon target containing a catalyst is evaporated with a laser ablation method to synthesize a structure including both of a carbon nanohorn aggregate and a carbon nanotube.
Abstract:
Methods of forming a metal nanoparticle-graphene composite are provided. The methods include providing a functionalized hydrogen exfoliated wrinkled graphene (f-HEG) substrate and dispersing metal nanoparticles on a first major surface of the f-HEG substrate to form the metal nanoparticle-graphene composite.
Abstract:
Electron emission devices include first electrodes on a substrate extending in a first direction and spaced apart from each other. Second electrodes are on the substrate alternating between the first electrodes and extending in a second direction opposing the first direction. First electron emitters and second electron emitters are on side surfaces of the first electrodes and the second electrodes, respectively. Gaps are formed between the first electron emitters and second electron emitters.
Abstract:
A method of manufacturing a field emission electrode includes humidification processing to absorb water at a surface of an electron emission film emitting electrons as a result of application of a voltage, and voltage application processing to apply an aging voltage between the humidified electron emission film and an electrode provided facing the electron emission film.