Ultra-low-power transistors

Devices based on a new ultra-low-power thin-film transistor design by University of Cambridge engineers could function for months or even years without a battery, by operating on scavenged energy from their environment — ideal for the Internet of Things and for wearable or implantable electronics.
The transistors can be produced at low temperatures and can be printed on almost any material, such as glass, plastic, polyester fabrics, and paper.