1. A method for electronically controlling nucleic acid hybridization, comprising the steps of: connecting multiple locations to an electrical source; contacting a plurality of specific nucleic acids with target nucleic acids, wherein said specific nucleic acids are attached to said locations; and placing at least one of said locations at a negative potential for a sufficient time, wherein a non-specific nucleic acid sequence to said target nucleic acid but not a specific nucleic acid sequence from said plurality of nucleic acids is removed from said target nucleic acid.