Towards an understanding of friction at electrodes on the atomic scale

在原子尺度上理解电极摩擦

• 批准号: 288879147
• 负责人: Professor Dr. Helmut Baltruschat
• 金额: --
• 依托单位: Abteilung Elektrochemie
• 依托单位国家: 德国
• 项目类别: Research Grants
• 财政年份: 2016
• 资助国家: 德国
• 起止时间: 2015-12-31 至 2022-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/288879147?language=en
• 关键词: Towards; understanding; friction; electrodes; atomic

Despite of the fact that in everyday life friction often occurs at wet surfaces, and therefore in the presence of an interfacial potential drop, the number of reports on fundamental studies of friction on the atomic scale is limited. For fundamental studies, friction measurements on electrode surfaces (which can be prepared similarly clean and well defined as in UHV) also offer the advantage that the surface can quickly and reversibly be modified with adsorbed monolayers or multilayers. In this project, further insight into the mechanism of friction shall be gained by examining the effect of different kinds of adsorbates (cations and anions, organic adsorbates, tensides) and also their orientation on friction as studied by atomically resolved friction force microscopy on the one hand. On the other hand, theoretical models of friction shall be developed; their results shall be compared to the measurements. Theory shall also help in designing appropriate experiments.

尽管在日常生活中摩擦经常发生在潮湿的表面，因此在存在界面电位下降的情况下，但关于原子尺度摩擦基础研究的报告数量仍然有限。对于基础研究，电极表面的摩擦测量（可以像 UHV 中一样干净且清晰地制备）还具有以下优点：可以用吸附的单层或多层快速且可逆地修改表面。在该项目中，应通过检查不同种类吸附物（阳离子和阴离子、有机吸附物、表面活性剂）的影响以及它们对摩擦的取向（通过原子分辨摩擦力显微镜研究）来进一步了解摩擦机制。手。另一方面，应开发摩擦理论模型；他们的结果应与测量结果进行比较。理论还应有助于设计适当的实验。