Patent ID: 7347921

Claim:
An apparatus for threading a biopolymer through a nanopore, comprising: (a) a first microfluidic channel having at least two electrodes for creating an electric field for creating electrophoretic movement of the biopolymer in a first direction; (b) a nanopore in the wall of the first microfluidic channel; and (c) a second microfluidic channel communicating with the first microfluidic channel by way of the nanopore in the wall of the first microfluidic channel, the second microfluidic channel having a second set of electrodes for creating electrophoretic movement of the bipolymer in a second direction; wherein at least one of the electrodes of the second set of electrodes is located in the second microfluidic channel on the opposite side of the nanopore with respect to at least one other of the electrodes of the second set of electrodes.