Ionic gating of oxide thin films has emerged as a novel way of manipulating the properties of thin films. Most studies are carried out on single devices with a three-terminal configuration, but, by exploring the electrokinetics during the ionic gating, such a configuration with initially insulating films leads to a highly non-uniform gating response of individual devices within large arrays of the devices. It is shown that such an issue can be circumvented by the formation of a uniform charge potential by the use of a thin conducting underlayer. This synchronized local ionic gating allows for the simultaneous manipulation of the electrical, magnetic, and/or optical properties of large arrays of devices. Designer metasurfaces formed in this way from SrCoO_2.5 thin films display an anomalous optical reflection of light that relies on the uniform and coherent response of all the devices. Beyond oxides, almost any material whose properties can be controlled by the addition or removal of ions via gating can form novel metasurfaces using this technique. These findings provide insights into the electrokinetics of ionic gating and a wide range of applications using synchronized local ionic gating.

中文翻译：

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同步局部离子门控形成的全氧化物超表面


氧化物薄膜的离子门控已成为操纵薄膜特性的一种新方法。大多数研究都是在具有三端配置的单个器件上进行的，但是，通过探索离子门控过程中的动电学，这种具有初始绝缘膜的配置会导致大阵列内各个器件的高度不均匀的门控响应。设备。结果表明，可以通过使用薄导电底层形成均匀的电荷电势来避免这种问题。这种同步的局部离子门控允许同时操纵大型器件阵列的电、磁和/或光学特性。以这种方式由 SrCoO _2.5 薄膜形成的设计超表面显示出反常的光反射，这依赖于所有器件的均匀一致的响应。除了氧化物之外，几乎任何可以通过门控添加或去除离子来控制其特性的材料都可以使用这种技术形成新型超表面。这些发现提供了对离子门控的电动动力学以及使用同步局部离子门控的广泛应用的见解。