Electronics gets inked up

A new approach to making transistors will involve depositing sequentially their components in the form of liquid nanocrystal “inks” say researchers at the University of Pennsylvania. The research could lead to flexible electrical components that might be used in wearable devices and other applications. The lower-temperature process makes the possibility of embedding such components in a wide variety of materials as well as making large area devices. According to Cherie Kagan and colleagues the nanocrystal-based field effect transistors were patterned on to flexible plastic supports using spin coating but could be amenable to additive manufacturing systems, such as 3D printing.