Microarray uses a very simple technique, ultrasound, to generate highly reproducible microelectrode arrays. Existing methods of making such devices use either photolithography techniques or laser ablation, too costly to allow the commercial exploitation of microelectrode array devices for many applications.

Typically devices can be made from low cost screen printing techniques with conductive carbon inks, or other materials such as gold can be used if required during development work.

The devices are then covered in a thin insulative polymer. Ultrasound is then used in solution, to blast tiny holes in the polymer as a result of the cavitation caused.

The process, although chaotic, can deliver very consistent results, simply by controlling the sonication energy and sonication time.