	US 7,341,653 B2
	Method and device for separating particle
Koichi Hishida, Yokohama (Japan); Yohei Sato, Yokohama (Japan); Takahiro Yamamoto, Yokohama (Japan); and Shankar Devasenathipathy, Yokohama (Japan)
Assigned to Keio University, Tokyo (Japan)
Filed on Sep. 13, 2004, as Appl. No. 10/938,551.
Claims priority of application No. 2003-324601 (JP), filed on Sep. 17, 2003.
Prior Publication US 2005/0092692 A1, May 05, 2005
Int. Cl. G01N 27/447 (2006.01); G01N 27/453 (2006.01)

U.S. Cl. 204—451 [204/601]

4 Claims

1. A method for separating submicron particles mixed in liquid, the method comprising the steps of:

providing a micro channel which has channels disposed in the shape of any one of the letter T, the letter Y, and a cross, and is structured so that the liquid flows into a single outlet channel from a plurality of intake channels, and flowing a plurality of types of liquid having a same or different concentration of the submicron particles respectively from the respective intake channels and different electrical conductivity respectively into the respective intake channels of the micro channel; and

applying an electric field to the micro channel to attract at least one of the submicron particles from the plurality of intake channels to one side within the outlet channel by an electrokinetic driving flow in the micro channel.