The nanofluidic diode device was a significant ionic transistor. Its multiple cascades could realize diversified ion transport behaviors and information processing functions. Different cascade modes of channel units will affect the response current properties of multichannel systems. Inspired by independent and synergistic effects in semiconductor transistors, artificial conical nanoporous bichannel systems were investigated in separation and stacking cascade modes to discuss their different ion transport behaviors. The dynamic resistance fitting method was adopted to discuss the properties of each circuit components in the bichannel system for analyzing the circuit properties in different cascade modes. In the stacking mode, electric field interactions at the heterojunctions between channel units dominated the ionic transport properties, and response current of the bichannel system was influenced by the channel unit cascade sequence. In the separation mode, channel units transport ions independently, and the cascade sequence had little effect on response current properties of the system. These promising results provide a new strategy to design and build a series of artificial composite nanochannels with multifunction and intelligence.

中文翻译：

---

独立和协同级联模式下的纳米流体二极管双通道系统的离子输运行为。

纳米流体二极管器件是重要的离子晶体管。它的多个级联可以实现多种离子传输行为和信息处理功能。通道单元的不同级联模式将影响多通道系统的响应电流属性。受半导体晶体管中独立和协同效应的启发，以分离和堆叠级联模式研究了人工圆锥形纳米多孔双通道系统，以讨论其不同的离子传输行为。采用动态电阻拟合的方法讨论了双通道系统中每个电路元件的特性，以分析不同级联模式下的电路特性。在堆叠模式下，通道单元之间异质结处的电场相互作用支配着离子的传输特性，双通道系统的响应电流受通道单元级联序列的影响。在分离模式下，通道单元独立地传输离子，并且级联序列对系统的响应电流特性影响很小。这些有希望的结果为设计和构建一系列具有多功能和智能的人造复合纳米通道提供了新的策略。