A reaction chamber for manufacturing a carbon nanotube, comprising:
- a reaction furnace having a box structure for receiving a substrate, the reaction furnace providing a space for forming the carbon nanotube on the substrate;
- a gas inlet having a through-hole structure formed at a first portion of the reaction chamber, the gas inlet providing a passage for an inflow of a source gas for forming the carbon nanotube into the reaction chamber;
- a gas outlet having a through-hole structure formed at a second portion of the reaction chamber, the gas outlet providing a passage for an outflow of the source gas from the reaction chamber;
- and
- a heat transfer member having at least one rectangular through-hole structure formed at a third portion of the reaction chamber along a direction substantially in parallel to the substrate, the heat transfer member providing a passage for transferring a heat to heat up the reaction chamber.