NOVELTY - A coaxial-type vacuum-arc-vapor-deposition source (21) is provided in a vacuum chamber (11). The coaxial-type vacuum-arc-vapor-deposition source has a cathode (22) comprising noble metal, an insulation insulator (23), and an anode. A vacuum-arc-vapor deposition apparatus (1) has a vapor-deposited component which is used in the vacuum chamber. A capacitor is connected with direct current (DC) power supply between cathode and anode. A discharge voltage is applied, and discharging of noble metal is carried out. The nanoparticles of the noble metal are supported.    USE - Support of nanoparticles using coaxial-type vacuum-arc-vapor-deposition source is used for manufacturing catalyst layer in substrate used for manufacturing carbon nanotube, electrode catalyst for fuel cell, and catalyst for purification of exhaust gas of motor vehicle.    ADVANTAGE - The support method of nanoparticles is carried out efficiently using coaxial-type vacuum-arc-vapor-deposition source.    DETAILED DESCRIPTION - A coaxial-type vacuum-arc-vapor-deposition source is provided in a vacuum chamber. The coaxial-type vacuum-arc-vapor-deposition source has a column-shaped cathode comprising noble metal, a cylindrical insulation insulator provided in same axis in contact with the outer peripheral surface, a trigger electrode provided in same axis in contact with the outer peripheral surface of the insulation insulator, and an anode where one end side opened in the vacuum chamber in cylindrical form, provided in same axis, at predetermined intervals from the outer peripheral surface of the trigger electrode, and closed in the position where the other end side is isolated from the cathode. A vacuum-arc-vapor deposition apparatus has a vapor-deposited component arranged facing the opening side the coaxial-type vacuum-arc-vapor-deposition source and which is used in the vacuum chamber. A capacitor is connected with direct current (DC) power supply between the cathode and the anode. A discharge voltage is applied, and discharging, dissolving and evaporation of the noble metal is carried out. The nanoparticles of the noble metal are supported by forming the vapor-deposited component in surface of the particulate insulator.    DESCRIPTION OF DRAWING(S) - The drawing shows a sectional view of the vacuum-arc-vapor-deposition apparatus. (Drawing includes non-English language text)    Vacuum-arc-vapor-deposition apparatus (1)    Vacuum chamber (11)    Coaxial-type vacuum-arc-vapor-deposition source (21)    Cathode (22)    Insulation insulator (23)