Abstract:
PROBLEM TO BE SOLVED: To solve a problem occurring in aspect of durability and the possibility of a long period use, resulting from damage and deterioration caused by a high temperature chemical reaction on a junction face between a rare-earth hexaboride single crystal nanofiber and a heat-resistant support metal needle, which is generated in a high temperature use process, when joining the rare-earth hexaboride single crystal nanofiber of lanthanum hexaboride or the like to the heat-resistant metal support needle, to be used as a hot-cathode electron emission source.SOLUTION: This hot-cathode electron emission source is constituted to form at least a junction portion of the heat-resistant metal support needle contacting with the rare-earth hexaboride single crystal nanofiber, of a heat resistant material not reacting chemically with the nanofiber even at a high temperature.
Abstract:
PROBLEM TO BE SOLVED: To provide a handling device of a nanofiber capable of picking up the nanofiber easily, and hardly influenced by a hardly controllable electrostatic force. SOLUTION: The nanofiber handling device includes an optical microscope for confirming a nanofiber position, a holding part for holding the nanofiber by van der Waals attraction, and a position-direction control means for moving and tilting the holding part three-dimensionally. The device has a function of picking up and moving the nanofiber, controlling its direction, and eliminating and arranging the nanofiber on a target position, and also has a smooth surface with roughness equal to or below the maximum roughness Rz=2n of a nanofiber holding surface of the holding part holding by the van der Waals attraction. The position-direction control means adopts: a three-dimensional stage moving in the horizontal two directions and the vertical one direction to a base; and a horizontal angle stage rotating around the Z-direction and a vertical angle stage rotating around the X-direction or the Y-direction, with respect to the three-dimensional stage. COPYRIGHT: (C)2011,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To form a high emission current density thermion emitter by using a rare earths hexaboride nanowire as an electron emitting unit. SOLUTION: There are two kinds of rare earths hexaboride nanowire thermion emitters. The first type is a surface emitter, and can be formed by depositing the thin-film rare earths hexaboride nanowire on a surface of a material to function as a heater. The second type is a point emitter, and can be formed by mounting one piece of the rare earths hexaboride nanowire on the heater main body. COPYRIGHT: (C)2009,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide a method for manufacturing a separated graphene film, capable of isolating a large amount of graphene films high in quality from graphite at low cost in a single process without a complicated oxidation process.SOLUTION: By applying voltage to graphite electrodes immersed in an electrolyte solution containing an alkali metal salt or an alkaline earth metal salt, such as a potassium salt, or a chloride as an electrolyte to be electrolyzed, graphene films are separated from the graphite electrode. Especially, the applied voltage is a rectangular wave AC.
Abstract:
PROBLEM TO BE SOLVED: To enhance the performance of a conductive polymer actuator material by carrying out a new method for dispersing carbon nanotubes although an actuator function is developed by adsorption/desorption of ion accompanying an oxidation-reduction reaction in a conductive polymer actuator function. SOLUTION: The conductive polymer actuator material includes a conductive polymer chemically bonded to the surfaces of carbon nanotubes dispersed in the conductive polymer. The conductive polymer actuator material is obtained by adopting a means for electrolytic polymerization using a carbon nanotube dispersion containing a conductive polymer monomer and an ion doping agent. In the conductive polymer actuator material, the carbon nanotubes are bound with the conductive polymer through a carboxy group. A means in which the carbon nanotubes are multilayer carbon nanotubes and a polypyrrole is used as the conductive polymer is adopted. COPYRIGHT: (C)2011,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide a bioreactive carbon nanotube functionalized by bonding with redox proteins by noncovalent bonding by using no polymer bonding material and to provide a method for preparing the bioreactive carbon nanotube functionalized by bonding with redox proteins by noncovalent bonding. SOLUTION: The bioreactive carbon nanotube functionalized by bonding with redox proteins by noncovalent bonding by using no polymer bonding material can be prepared by a method including the following processes. (i) A carbon nanotube is oxidized in concentrated nitric acid under a high-temperature condition. (ii) A yielded oxidized carbon nanotube is dispersed in purified water to have a prescribed concentration. (iii) A prescribed concentration of redox protein is added and mixed. (iv) A yielded bioreactive carbon nanotube (solid) is separated. COPYRIGHT: (C)2009,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide a long-length fiber formed only of nanotube simple substances which has high purity, and has extremely high alignment properties in such a manner that the nanotube simple substances are parallelly arranged in one direction. SOLUTION: The long-length fiber is formed only of nanotube simple substances. The nanotube simple substances are parallelly arranged in one direction, and are coupled by van der Waals Force so as to be directly adhered without inserting inclusions therebetween, thus the long-length fiber is formed. COPYRIGHT: (C)2008,JPO&INPIT