Patent ID: 7332127

Claim:
Apparatus comprising: a substrate including a plurality of target locations, a plurality of reservoirs, each reservoir containing one of a plurality of DNA base materials and including at least four reservoirs, each of said four reservoirs having a different DNA base material therein, a plurality respective groups of ejectors for each respective target location, each respective group plurality of ejectors operating to eject one of said plurality of DNA base materials when electrically actuated toward one of said respective target locations, each said ejector comprising a Self Focusing Acoustic Transducer (SFAT) which focuses waves using constructive interference, and a plurality of channels, wherein each channel connects one of the respective groups of ejectors to a respective corresponding reservoir, and each said channel receives one of said base materials from said corresponding reservoir when said respective group of ejectors is actuated, thus coupling said one of said base materials from said respective reservoir to said respective group of ejectors.