When the transistor switches, the change in voltage alters the electronicproperties of the material and determines whether or not electrons can flow through it.
Pulickel Ajayan and his colleagues chemically optimised the recipe for each of their five layers, using blends of chemicals common in lithium-ion batteries as well as novel materials including carbon nanotubes - tiny "straws" of carbon with incredible electronicproperties.
Such manufacturability implies that repeated fabrication of artefacts is possible to produce electronic, optical, magnetic or other properties with a high and highly reproducible yield within a tight tolerance of a pre-specified performance.
In HIS secret keys are extracted from the properties of chips like an 'electronic fingerprint' and used to offer a total protection of sensitive private and corporate data on mobile devices, embedded systems and in the cloud.
This combination has resulted in the rapid rise of social gaming properties like Zynga (now in registration for an IPO), Playfish (acquired by Electronic Arts), Playdom (acquired by Disney) and Crowdstar.