Method of Forming a Liquid-Liquid Mixing Phase Channel Group, Method of Controlling the Formation and Extinguishment of a Liquid-Liquid Mixing Phase Channel Group, And Module Therefor

A method of controlling the formation and extinguishment of a liquid-liquid mixing phase channel group comprising the steps of:

• guiding the liquid-liquid mixing phase in which said liquid-liquid mixing phase channel group is formed to the narrow passage, which is arranged or formed vertically so as to move in the vertical direction at the point where the liquid-liquid mixing phase extends ahead, and
• extinguishing said channel group by further guiding said liquid-liquid mixing phase to the part where the cross-sectional area is increased than the narrow passage.
• said liquid-liquid mixing phase being formed by using the method of forming a liquid-liquid mixing phase channel group comprising the steps of ejecting the first liquid as droplets into the phase of the second liquid in a two-liquid phase system in which two immiscible liquids oppose each other at an interface;
• incorporating the droplets of the first liquid into the phase of the first liquid, accompanied by the second liquid around the first liquid by allowing to collide the jet of the droplets with the interface;
• and forming a continuously connected microfluidic channel group in which the space between the layered droplets of the first liquid are filled with the second liquid in the liquid-liquid mixing phase that grows from the interface as a starting point.

A module comprising a narrow passage having a smaller cross-sectional area than the other passages and a cross-sectional area expansion part larger than the narrow passage, wherein

• the liquid-liquid mixing phase in which a liquid-liquid mixing phase channel group is formed is guided to the narrow passage, which is arranged or formed vertically so as to move in the vertical direction at the point where the liquid-liquid mixing phase extends ahead, and
• said channel group is extinguished by further guiding the liquid-liquid mixing phase to the cross-sectional area expansion part,
• said liquid-liquid mixing phase being formed by using the method of forming a liquid-liquid mixing phase channel group comprising the steps of ejecting the first liquid as droplets into the phase of the second liquid in a two-liquid phase system in which two immiscible liquids oppose each other at an interface;
• incorporating the droplets of the first liquid into the phase of the first liquid, accompanied by the second liquid around the first liquid by allowing to collide the jet of the droplets with the interface;
• and forming a continuously connected microfluidic channel group in which the space between the layered droplets of the first liquid are filled with the second liquid in the liquid-liquid mixing phase that grows from the interface as a starting point.

A module comprising a cross-sectional area expansion part having a larger cross-sectional area than the other passages, wherein

• the liquid-liquid mixing phase in which a liquid-liquid mixing phase channel group is formed is guided to the narrow passage, which is arranged or formed vertically so as to move in the vertical direction at the point where the liquid-liquid mixing phase extends ahead, and
• said channel group is extinguished by further guiding the liquid-liquid mixing phase to the cross-sectional area expansion part,
• said liquid-liquid mixing phase being formed by using the method of forming a liquid-liquid mixing phase channel group comprising the steps of ejecting the first liquid as droplets into the phase of the second liquid in a two-liquid phase system in which two immiscible liquids oppose each other at an interface;
• incorporating the droplets of the first liquid into the phase of the first liquid, accompanied by the second liquid around the first liquid by allowing to collide the jet of the droplets with the interface;
• and forming a continuously connected microfluidic channel group in which the space between the layered droplets of the first liquid are filled with the second liquid in the liquid-liquid mixing phase that grows from the interface as a starting point.