Method for making carbon nanotube array

A method for making an array of carbon nanotubes, comprising the steps of;

• providing a substrate with a film of a first catalyst thereon;
• disposing the substrate and a second catalyst on a tubular boat, the tubular boat having an open end configured for introducing of a carbon source gas thereinto and an opposite closed end configured for blocking and directing the introduced carbon source gas in the tubular boat to flow toward the substrate, the second catalyst being configured for reaction with the carbon source gas thereby producing a resultant for promoting catalytic activity of the first catalyst, the second catalyst being disposed on the tubular boat in a manner to enable the resultant associated with the second catalyst to forcedly flow toward the substrate;
• disposing the tubular boat in a reaction chamber having a gas inlet configured for introducing the carbon source gas and a carrier gas into the reaction chamber and a gas outlet;
• heating the reaction chamber to a predetermined temperature and introducing the carbon source gas into the reaction chamber;
• and
• growing an array of carbon nanotubes on the substrate;
• wherein the second catalyst is in the form of a powder or a netting, and the second catalyst is in direct contact with the quartz boat and beside the substrate.

A method for making an array of carbon nanotubes, comprising the steps of:

• providing a substrate with a first catalyst thereon;
• disposing the substrate and a second catalyst on the boat;
• wherein the second catalyst is adjacent to the first catalyst;
• placing the boat in a reaction chamber having a gas inlet configured for introducing a carbon source gas and a carrier gas into the reaction chamber and a gas outlet;
• heating the reaction chamber to a predetermined temperature and introducing the carbon source gas into the reaction chamber;
• reacting of second catalyst with the carbon source gas thereby producing a resultant;
• promoting catalytic activity of the first catalyst with the resultant;
• and
• growing an array of carbon nanotubes on the first catalyst;
• wherein the second catalyst is not located on the substrate.