In this article, we report the generation of alternating current by the application of constant and ramping DC voltages across oil–water interfaces. The work reported here can be broadly divided into two parts depending on the shapes of oil–water interfaces, i.e., flattened and curved. In the first part, an alternating current of ∼100 nA (amplitude) was generated by applying a constant DC voltage of −3 V and above across a freestanding and flattened oil–water interface. In another part, an alternating current of ∼150 nA (amplitude) was generated by applying a ramping up DC voltage starting from −5 V to 5 V, then again ramping back down to −5 V for the freestanding and curved interface. The suggested qualitative mechanism that engenders such a phenomenon includes the oil–water interface acting like a membrane. This membrane oscillates due to the electrophoretic movement of ions present in the aqueous phase by the application of a DC voltage across the interface. This electrophoretic movement of ions across oil–water interfaces causes Faraday instabilities leading to oscillations of the said interface. This method could also be used to study the stress levels in the interfacial films between two immiscible liquids. It explores the more-than-Moore’s paradigm by finding a substitute to a conventional alternator/inverter that generates alternating current upon applying a DC voltage input. This work would be of substantial interest to researchers exploring alternatives to conventional AC generators that can be used in liquid environments and in the design of novel integrated circuits that could be used for unconventional computing applications.

中文翻译：

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在独立的油水界面上施加直流电压时，法拉第不稳定性会导致电化学生成亚A AC

在本文中，我们报告了在油水界面上施加恒定且逐渐增加的直流电压会产生交流电的情况。根据油水界面的形状，此处报告的工作大致可分为两部分，即变平和弯曲。在第一部分中，通过在独立的平坦的油水界面上施加−3 V及以上的恒定DC电压，产生了约100 nA（振幅）的交流电。在另一部分中，通过施加从-5 V到5 V的上升直流电压，然后再次下降到-5 V以获得独立的弯曲界面，产生了约150 nA（振幅）的交流电。引起这种现象的定性机制包括油水界面的作用就像膜一样。由于在界面上施加DC电压，水相中存在的离子进行电泳运动，导致该膜振荡。离子在油水界面上的电泳运动导致法拉第不稳定性，导致所述界面发生振荡。该方法也可用于研究两种不混溶液体之间界面膜的应力水平。它通过寻找传统交流发电机/逆变器的替代品来探索比摩尔的范例，后者在施加直流电压输入时会产生交流电。研究人员对于探索可在液体环境中使用的常规交流发电机的替代方案以及在可用于非常规计算应用的新型集成电路的设计中探索这项工作非常感兴趣。