Patent ID: 9737889
Date: 2017-08-22
CPC Classifications: B01L

Claim:
1. A microfluidic apparatus for inducing a fluid to flow due to a centrifugal force, the apparatus comprising: a target chamber that houses a first fluid; a first chamber that houses a second fluid and is disposed closer to a rotation center of the microfluidic apparatus in a radial direction than the target chamber, the first chamber being connected to the target chamber by a first channel; a first valve that controls a flow of the second fluid through the first channel; and a second chamber disposed closer to the rotation center in radial radius direction than the target chamber and connected to the target chamber by a second channel, wherein the first channel is connected to the target chamber at a first location and the second channel is connected to the target chamber at a second location other than the first location, in an initial state, the second fluid in the first chamber has a first fluid level which is higher than a second fluid level of the first fluid in the target chamber from a perspective of the rotation center of the microfluidic device, and when the second fluid in the first chamber is supplied to the target chamber from the first chamber by the centrifugal force, the first fluid is pushed by the second fluid and is transported from the target chamber to the second chamber until the first and second fluids in the first and second chambers, the target chamber, and the first and second channels reach an equilibrium state, wherein fluid levels of fluids in the first chamber and the second chamber are at a third fluid level lower than the first fluid level.