A molecular detection device including a support member (36) and a plurality of molecular receptors (34) arranged at a plurality of sites of the support member (36). In a first aspect, the molecular receptors (34) are arranged in accordance with a mapping selected from the group consisting of a random...http://www.google.co.uk/patents/US5968728?utm_source=gb-gplus-sharePatent US5968728 - Molecular detection devices and methods of forming same