Microparticle producing system which comprises carrying fluid, and a controlling method thereof

A method of controlling a microparticle producing system, the method comprising:

• supplying a carrier fluid to a transport channel;
• supplying one material comprising at least a first material and a second material to a droplet producing microfluidic chip to form a discharge fluid discharging to the transport channel through an outlet channel of the chip,
• wherein the discharge fluid comprises a material fluid comprising the first material and a droplet comprising the second material, and
• wherein the droplet is produced from the one material in the droplet producing chip;
• generating a combined fluid by combining the carrier fluid with the discharge fluid in the transport channel,
• wherein the supplying the carrier fluid to the transport channel causes a flow rate of the combined fluid to be larger than that of the discharge fluid;
• and
• producing a microparticle from the droplet by controlling whether the droplet comes into contact with air before the discharge fluid and the carrier fluid are combined,
• wherein the controlling whether the droplet comes into contact with air is achieved through a carrier fluid controller configured to control one or more selected from an inflow time point, an inflow stop time point, an inflow time, an inflow stop time, an inflow amount, and a flow rate of the carrier fluid, a flow velocity of the carrier fluid in the transport channel, and an inflow location of the carrier fluid.