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Rectifying ionic current with ionoelastomers
Science ( IF 56.9 ) Pub Date : 2020-02-13 , DOI: 10.1126/science.aba6270
Dace Gao 1 , Pooi See Lee 1
Affiliation  

A solvent-free polyanion-polycation heterojunction creates ionic diodes and transistors The formation of junctions between p- and n-type semiconductors is the elementary building block of solid-state electronics. The unidirectional transportation of electrons across the junction interface, known as rectification, is the functional basis of electronic diodes, transistors, and integrated logic circuits. By contrast, biological systems use ions as signal carriers for sensing, signal transduction, and information processing. For example, ion-selective proteins embedded in the neuronal membrane transport sodium and potassium ions asymmetrically to propagate nerve impulses (1). Although the pursuit of dimensional shrinkage in modern electronics is reaching its physical limitation, the development of an ionic analogy to p-n junctions is expected to bring about unconventional circuits that simulate the nervous system (2) and has the potential to deliver intrinsically deformable processing units. On page 773 of this issue, Kim et al. (3) report the fabrication of ionic diodes and transistors using solvent-free ionoelastomers, thereby establishing a basis for stretchable ionotronic devices.

中文翻译:

用离子弹性体整流离子电流

无溶剂聚阴离子-聚阳离子异质结形成离子二极管和晶体管 p 型和 n 型半导体之间的结的形成是固态电子产品的基本构建块。电子通过结界面的单向传输,称为整流,是电子二极管、晶体管和集成逻辑电路的功能基础。相比之下,生物系统使用离子作为信号载体进行传感、信号转导和信息处理。例如,嵌入神经元膜中的离子选择性蛋白质不对称地运输钠离子和钾离子以传播神经冲动 (1)。虽然现代电子产品对尺寸收缩的追求正在达到其物理极限,pn 结的离子类比的发展有望带来模拟神经系统 (2) 的非常规电路,并有可能提供本质上可变形的处理单元。在本期第 773 页,Kim 等人。(3) 报道了使用无溶剂离子弹性体制造离子二极管和晶体管,从而为可拉伸的离子电子器件奠定了基础。
更新日期:2020-02-13
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