论文标题
广义动态连接理论，以解决液体固定界面中直流电的机理
Generalized Dynamic Junction Theory to Resolve the Mechanism of Direct Current Generation in Liquid-Solid Interfaces
论文作者
论文摘要
尽管从表面上液体的连续流动从液体的连续流中产生了不安的机制，但电荷分离理论已被广泛接受，用于从移动的液滴中交流电（AC）产生。最近，它扩展到了在两种不同材料之间移动的液滴中合理化直流电（DC）的生成。通过设计金属线和在石墨烯上移动的水滴之间的可重构接触，我们表明电荷分离理论无法解释当水 - 金属接口从动态转换为静态时电流的逆转。在将动态与静态界面区分开并将光伏状效应概括为所有动态连接之后，都可以描述所有实验：移动界面中的激发电子和孔将在内置电场下分离并扫描，从而导致DC响应。这种广义理论将基于界面电荷转移，导致对有效发电的理解和设计。
Despite the unsettled mechanism of electricity generation from the continuous flow of liquids on a surface, the charge-discharge theory has been widely accepted for alternating current (AC) generation from a moving droplet. It has been recently extended to rationalize direct current (DC) generation across a droplet moving between two different materials. By designing a reconfigurable contact between a metal wire and a water droplet moving on graphene, we show that the charge-discharge theory cannot explain the reversal of current when water-metal interfaces switch from dynamic to static. All experiments can be described after we distinguish a dynamic from a static interface and generalize the photovoltaic-like effect to all dynamic junctions: excited electrons and holes in a moving interface will be separated and swept under the built-in electrical field, leading to a DC response. This generalized theory will lead to an understanding and the design of efficient electricity generation based on interfacial charge transfer.
