PARTICLE SEPARATION DEVICE AND METHOD

摘要

Micropillars are arranged a first row up to an nth row, the micropillars in one row are disposed at the same interval “a” from each other, and each of the rows is disposed in a position shifted by a distance “b” with respect to an immediately preceding upstream row, in a row direction. A liquid that contains particles flows through between the micropillars. A voltage is applied from a power supply to electrodes, thereby generating an electric field in a flow channel. The micropillars are electrical insulating structures, so in regions of narrow intervals between the micropillars, electrical lines of force are dense and strength of the electric field is high, and in regions of wide intervals between the micropillars, electrical lines of force are sparse and the strength of the electric field is low.

主权项

1. A particle separation device, comprising:
a particle inflow section that draws in a suspension containing a plurality of dielectric particles suspended therein; a particle separating section including
a flow channel to which the particle suspension is supplied from the particle inflow section and into which the particle suspension flows,a plurality of micropillars each formed from an electrical insulating material and disposed in the flow channel, anda voltage source that generates an electric field in the flow channel having the micropillars disposed therein, the plurality of micropillars being placed in such a position that the micropillars form electrically sparse and dense regions of the electric field generated by the voltage source to deflect the particles in a definite direction in the suspension; a particle concentrated liquid outflow channel that draws out a particle concentrated liquid containing concentrated particles separated by the particle separating section; and a particle-free liquid outflow channel that draws out a particle-free liquid from which the particles have been removed by the particle separating section.