Patent ID: 8721992

Claim:
A micro fluidic device, for use with a plurality of fluids, comprising: a substrate; a plurality of thin film pattern members formed on the substrate, the thin film pattern members comprising nickel, an alloy including nickel as a main component, copper or an alloy including copper as a main component; a plurality of inlet ports; a plurality of introduce channels to which the inlet ports are connected; and a micro channel, formed on the substrate, to which the introduce channels are joined so as to form a division between the introduce channels perpendicular to a plane on which the substrate extends, and defining an inner wall of the micro channel, the micro channel including: a curved portion having a first end, a second end, and a center disposed between the first and second ends; a plurality of protruding parts connected to the inner wall of the micro channel extending beyond the inner wall in a direction substantially parallel to the plane on which the substrate extends, each extending from the first end of the curved portion to the second end of the curved portion on a plane substantially parallel to the plane on which the substrate extends, and protruding in a direction substantially parallel to the plane on which the substrate extends, wherein the heights of the plurality of protruding parts increase as the plurality of protruding parts extend from the first end of the curved portion to the center of the curved portion; the plurality of protruding parts are provided only in the inner wall of an outer peripheral side of the curved portion of the micro channel; the heights of the plurality of protruding parts decrease as the plurality of protruding parts extend from the center of the curved portion to the second end of the curved portion; the heights of the plurality of protruding parts at the center of the curved portion are greater than the heights of the plurality of protruding parts at the first and second ends of the curved portion; and the heights of the plurality of protruding parts are 50% or smaller than a width of the micro channel.