Ionic nanoarchitectonics for electronic information devices

Today's scientific and technological growth relies on rapid advances in electronic information technologies. Semiconductor devices such as transistors are essential to these technologies, and they are constantly being improved by being made smaller and more integrated. However, there is a concern that these improvements may slow down in the near future. Thus, creating new types of devices that can overcome the problems and/or enhance the capabilities of traditional semiconductor devices has become an important challenge. In particular, solid-state ionic devices can potentially meet this challenge. In this review, we describe the design of such devices using ionic nanoarchitectonics techniques that locally control ion conduction and electrochemical behavior in ion conductors and mixed conductors. In addition, we describe solid-state ionic devices developed for electronic information technology as well as the electrical, magnetic, optical, and brain-inspired neuromorphic functionalities of these devices. • Ionic nanoarchitectonics for control ion transport and electrochemical phenomena • Electronic information devices enhanced by ionic nanoarchitectonics. • Ionic devices enable performance unattainable with conventional semiconductor devices. • Quantized conductance atomic switch operating by atomic-scale ion transport. • Brain-mimicking neuromorphic ionic devices.