DOUBLE-WALLED CARBON NANOTUBE AND ITS MANUFACTURING AND APPLICATION METHOD

PROBLEM TO BE SOLVED: To provide a solid material composed of hollow carbon nanotubes having a wall consisting of graphene dual layers of a cocentric and nearly cylindrical shape and its manufacturing and application method. SOLUTION: The manufacturing and application method relates to fullerene car...

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Hauptverfasser:	MORAVSKY ALEXANDER P, LOUTFY RAOUF O
Format:	Patent
Sprache:	eng
Schlagworte:	APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBONFILAMENTS BASIC ELECTRIC ELEMENTS CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS,THREADS, FIBRES, BRISTLES OR RIBBONS CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY CHEMISTRY COMPOUNDS THEREOF ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS ELECTRICITY INORGANIC CHEMISTRY MANUFACTURE OR TREATMENT THEREOF METALLURGY NANOSTRUCTURES FORMED BY MANIPULATION OF INDIVIDUAL ATOMS,MOLECULES, OR LIMITED COLLECTIONS OF ATOMS OR MOLECULES ASDISCRETE UNITS NANOTECHNOLOGY NATURAL OR ARTIFICIAL THREADS OR FIBRES NON-METALLIC ELEMENTS PERFORMING OPERATIONS PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL SPINNING TEXTILES THEIR RELEVANT APPARATUS TRANSPORTING
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Beschreibung
Zusammenfassung:	PROBLEM TO BE SOLVED: To provide a solid material composed of hollow carbon nanotubes having a wall consisting of graphene dual layers of a cocentric and nearly cylindrical shape and its manufacturing and application method. SOLUTION: The manufacturing and application method relates to fullerene carbon nanotubes having a cylindrical wall comprising a double layer of carbon atoms (3), and its manufacturing and application comprising supplying a catalyst composed of a carbon supply source and a transition metal substantially belonging to an iron group of the periodic table of the elements and sulfur to a reacting zone having a DWNT formation atmosphere substantially consisting of a hydrogen-containing gas and applying heat to carbon and the catalyst in the reacting zone. Furthermore, the method relates to the nanotubes having the adjusted number of carbon layers and its large-scale manufacturing. Moreover, the method relates to the application as, for example, a low-temperature field electron emmission device consisting of a light emitting cathod ray tube (CRT). COPYRIGHT: (C)2006,JPO&NCIPI