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Ionotronics

Judith Driscoll

Recent discoveries of non-negligible nanoionic memristive signals have sparked off many research activities, towards a universal device involving terabit memories, logic operators, neuristors and nanobatteries. A key question is how to create and tune nanionic channels. To this end, we have created new kinds of ordered nanostructured thin films by a one-step process. These films have highly controlled nanionic pathways along vertical interfaces. Using these structures, we have demonstrated electroforming-free nanoscaffold memristors with extreme uniformity, tunability and high density.

a) Nanocolumnar ionotronic thin films. b) I-V curve showing memristor behaviour. c) Strong retention of resistive switching behaviour of composite film. Plain films, by comparison do not show switching because nanoionic channels are not present.

Advanced Materials 26, 6284 (2014) DOI: 10.1002/adma.201401917

 

Part of research conducted in the Driscoll Group