Nanopore arrays

A system for analyzing molecules using a chip comprising a nanopore array comprising a plurality of cells, comprising:

• a processor configured to:
• cause one nanopore to be formed in each of at least a portion of the plurality of the cells;
• receive a first electrical measurement from each of the plurality of the cells, wherein the first electrical measurement is sensed by an electrical circuit in the particular cell;
• and
• determine formation of one nanopore in each of at least a threshold number of cells based at least in part on the sensed first electrical measurements, wherein the threshold number of cells comprise a portion of the plurality of the cells, and in the event that formation of one nanopore in each of at least the threshold number of cells is determined within a fixed period, begin to cause the molecules to interact with the formed nanopores, comprising:
• disabling the cells that have been determined as not having one formed nanopore, comprising disabling each of the disabled cells from drawing a current to the particular disabled cell;
• causing the molecules to interact with the formed nanopores in the cells that are not disabled;
• and
• receiving from each of the cells that have been determined as having one formed nanopore a second electrical measurement, wherein the second electrical measurement is sensed by the electrical circuit in the particular cell, and determining a property of the molecules based at least in part on the second electrical measurement;
• and
• a memory coupled to the processor and configured to provide the processor with instructions.