Patent ID: 8530088

Claim:
A method of producing nanoparticles, the method comprising: providing an apparatus to produce nanoparticles, wherein the apparatus comprises: a reaction chamber comprising: a gas inlet, a nanoparticle housing device, and a division member that is grounded and divides the reaction chamber into a nanoparticle forming region and a nanoparticle housing region; a gas supply unit that supplies a first process gas, a second process gas and an atmospheric gas into the reaction chamber; a power source unit that generates plasma in the reaction chamber; and a flow control unit that evacuates the reaction chamber to form a vacuum state therein and that controls a flow of gas; evacuating the reaction chamber to form a vacuum state therein; supplying the first process gas and the atmospheric gas into the reaction chamber that is in the vacuum state; fixing the pressure of the reaction chamber so that the supplied first process gas and atmospheric gas are continuously present in a steady state in the reaction chamber; forming nanoparticles by generating a plasma in the reaction chamber and supplying a second process gas in a pulsed manner; and collecting the formed nanoparticles in the nanoparticle housing region of the reaction chamber, wherein the pulsed manner has a time period in which the second process gas is not supplied.