A first sensor (18) for electrically sensing a molecular binding event includes a receptor-supporting element (20) into which a reagent is diffusable, at least one molecular receptor (22) supported by the receptor-supporting element (20), and a first electrode (24) embedded in the receptor-supporting...http://www.google.de/patents/US6048692?utm_source=gb-gplus-sharePatent US6048692 - Sensors for electrically sensing binding events for supported molecular receptors