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Dynamic mechanical control of local vacancies in NiO thin films

机译：NIO薄膜本地空位的动态机械控制

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The manipulation of local ionic behavior via external stimuli in oxide systems is of great interest because it can help in directly tuning material properties. Among external stimuli, mechanical force has attracted intriguing attention as novel stimulus for ionic modulation. Even though effectiveness of mechanical force on local ionic modulation has been validated in terms of static effect, its real-time i.e., dynamic, behavior under an application of the force is barely investigated in spite of its crucial impact on device performance such as force or pressure sensors. In this study, we explore dynamic ionic behavior modulated by mechanical force in NiO thin films using electrochemical strain microscopy (ESM). Ionically mediated ESM hysteresis loops were significantly varied under an application of mechanical force. Based on these results, we were able to investigate relative relationship between the force and voltage effects on ionic motion and, further, control effectively ionic behavior through combination of mechanical and electrical stimuli. Our results can provide comprehensive information on the effect of mechanical forces on ionic dynamics in ionic systems.
机译：通过氧化物系统中的外部刺激进行局部离子行为的操纵是非常兴趣的，因为它可以有助于直接调整材料性质。在外部刺激中，机械力引起了有趣的关注作为离子调制的新刺激。即使对当地离子调制机械力的有效性已在静电效果方面得到证实，它的实时即，动感，力量的应用下的行为，尽管对器件性能的至关重要的影响几乎没有研究，如力或压力传感器。在该研究中，我们使用电化学应变显微镜（ESM）探讨通过NiO薄膜的机械力调节的动态离子行为。在机械力的应用下，离子介导的ESM滞后环显着变化。基于这些结果，我们能够通过机械和电刺激的组合来研究对离子运动的力和电压效应之间的相对关系，进一步控制有效地控制离子行为。我们的结果可以提供有关机械力对离子系统中离子动力学影响的全面信息。

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