Methods and apparatus for the preparation of a substrate having an array of diverse materials in predefined regions thereon. A substrate having an array of diverse materials thereon is generally prepared by depositing components of target materials to predefined regions on the substrate, and, in some...http://www.google.co.uk/patents/US6045671?utm_source=gb-gplus-sharePatent US6045671 - Systems and methods for the combinatorial synthesis of novel materials