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Aqueous Ionic Circuits
An ionic circuit developed by Woo‐Bin Jung, Donhee Ham, and co‐workers in article number 2205096 computes in water. It can execute a core of neural‐net computing in an analog manner fully based on electrochemical principles in an aqueous solution of quinone. This ionic circuit thus demonstrates a step toward sophisticated aqueous ionics.
Using ions in aqueous milieu for signal processing, like in biological circuits, may potentially lead to a bioinspired information processing platform. Studies, however, have focused on individual ionic diodes and transistors rather than circuits comprising many such devices. Here a 16 × 16 array of new ionic transistors is developed in an aqueous quinone solution. Each transistor features a concentric...