Patent ID: 7708871
Filing Date: 2010-05-04
Classification: B01D,G01N

Abstract:
1. An apparatus comprising: a nanodevice for controlling the flow of charged particles, wherein the nanodevice comprises a polymeric foil and at least one preferentially asymmetric pore forming a via hole through said foil, wherein said pore provides a narrow opening of a diameter in the range of several nanometers down to about one nanometer on a front side of said foil and a wide opening in the range of several ten nanometers up to several hundred nanometers on a back side of said foil, and wherein an electrically conductive layer surrounds said narrow opening on said front side; an electrolytic bath container that is divided by said polymeric foil into a first and a second compartment, wherein each of the first and second compartment comprises an electrode connected to a direct current voltage (U a gate voltage (U