Abstract The cause of electron transfer in contact electrification is one of the most hotly debated physical problems today. In this study, the electron transfer is hypothesized to be partly driven by the surface dipole induced potential during contact. This phenomena is demonstrated by a combination of atomistic field theory (AFT) and molecular dynamics (MD) simulation. A representative contact system of carbon and silicon dioxide was chosen for its excellent tribo-tunneling power output performance. The results reveal the existence of a nonlinear potential field as well as the existence of a separation dependent potential barrier at the contact interface. Possible scenarios of triboelectric charge transfer are discussed in light of these results. These results are critical to the fundamental understanding of contact electrification.

中文翻译：

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接触带电中的非线性势场

摘要 接触带电中电子转移的原因是当今争论最激烈的物理问题之一。在这项研究中，假设电子转移部分由接触过程中的表面偶极子感应电势驱动。这种现象通过原子场理论 (AFT) 和分子动力学 (MD) 模拟的结合来证明。选择具有代表性的碳和二氧化硅接触系统，因为它具有出色的摩擦隧道功率输出性能。结果揭示了非线性势场的存在以及接触界面处分离相关势垒的存在。根据这些结果讨论了摩擦电荷转移的可能情况。这些结果对于接触带电的基本理解至关重要。