Patent ID: 7316320
Filing Date: 2008-01-08
Classification: B03C

Abstract:
1. A method comprising: applying an electric field to a solution containing charged particles under conditions that will cause negatively and positively charged particles to focus along the length of a first channel formed in a device, the negatively charged particles to focus in the first channel in one direction, the positively charged particles to focus in the first channel in the opposite direction; and applying another electric field to cause at least some of the focused, negatively charged particles to migrate through a sieve disposed in one second channel in said device and at least some of the focused, positively charged particles to migrate through the sieve disposed in another second channel in said device, said one second channel and said another second channel situated proximate an area where at least some of said negatively and positively charged particles have focused respectively, both of said second channels transverse to said first channel and in communication therewith.