Large-scale printing and lithography for flexible electronics

Printed electronics has been emerging for next generation flexible electronics with advantages of simple steps, fast speed, low equipment cost, low material consumption, eco-friendly features and roll-to-roll mass production using electronic inks. During last decades, many kinds of printing methods have been developed and currently are at the level of producing simple elements of devices and prototypes of complicated applications such as a display, a touch screen panel and a solar cell. In the near future, printed electronics is expected to be a key technology of all fields of future electronics such as flexible and stretchable devices, wearable applications and smart healthcare electronics. In this seminar, I will introduce a novel printing system, electrohydrodynamic nanowire printing (e-nanowire printing), which is close to meet those necessities. High-speed, large-scale direct printing of highly-aligned nanowires allows to make uniformly designed semiconductor, dielectric, and metallic electrode nano-patterns. Moreover, the use of nanoscale wires in a controlled manner enables sophisticated nanowire lithography for nano-electronics. This approach will take one of the important roles to realize printed electronics.