Konstantin G. Nikolaev, Sergey Grebenchuk, Zhao Jinpei, Kou Yang, Yixin Zhang, Ong Mei Shan, Vitaly Sorokin, Siyu Chen, Qian Wang, Jia Hui Bong, Kostya S. Novoselov, Daria V. Andreeva
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引用次数: 0
Abstract
Chemical oscillators—such as the Belousov-Zhabotinsky reaction—have long served as model systems for studying non-equilibrium chemical dynamics and as analogues of biological oscillations. However, many biological processes rely on out-of-equilibrium, often oscillatory, ionic fluxes that do not involve chemical reactions. Examples include action potentials in neurons, muscle contraction, cardiac rhythmicity, intracellular calcium signaling, and calcium wave oscillations. Despite these parallels, the development of biomimetic systems compatible with neuromorphic interfaces remains a significant challenge. Here, a strategy is demonstrated to organize oscillating ionic currents by developing ionic transistors composed of graphene oxide and polyelectrolyte, and assembling them into all-ionic integrated circuits. By driving these systems out of equilibrium using external voltages, periodic motion of various ions across defined interfaces is achieved. This behavior, governed by local electric fields arising from unbalanced ionic concentrations, closely mimics biological excitability, such as that observed in neuronal and cardiac systems. These ionic transistors serve as a foundational building block for neuromorphic interfaces, offering a universal platform to emulate complex biological ionic processes with high fidelity.
期刊介绍:
Advanced Electronic Materials is an interdisciplinary forum for peer-reviewed, high-quality, high-impact research in the fields of materials science, physics, and engineering of electronic and magnetic materials. It includes research on physics and physical properties of electronic and magnetic materials, spintronics, electronics, device physics and engineering, micro- and nano-electromechanical systems, and organic electronics, in addition to fundamental research.