Patent ID: 7566418
Filing Date: 2009-07-28
Classification: G01N

Abstract:
1. A biochemical concentrator apparatus comprising: a solution containing a target species, one or more electric field generators for generating electric fields and for effecting movement of the target species within the solution and changing species flux within regions of the solution, a sensor having receptors for the target species, one or more voltage sources connected to the one or more electric field generators, and further comprising a ground connected to the sensor and to the one or more sources, wherein the one or more electric field generators can concentrate the target species in the region of the solution nearest the sensor and remove the target species from that region and from the vicinity of the one or more electric field generators, without necessarily applying an electric field in the area around the sensor during operation, wherein the one or more electric field generators comprise one or more electrodes spaced from the sensor, wherein the one or more electrodes comprise one or more grids surrounding the sensor and spaced between the sensor and each respective electrode's voltage source.