Analysis of Solid-Liquid Interface by Frequency Modulation Atomic Force Microscopy

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  • 周波数変調原子間力顕微鏡による固液界面構造解析
  • シュウハスウ ヘンチョウ ゲンシ カンリョク ケンビキョウ ニ ヨル コエキ カイメン コウゾウ カイセキ

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Abstract

<p>It is known that some additives contained in lubricants form an adsorbed layer on the solid surface, and an adsorbed layer reduces friction and wear by preventing direct contacts between solids. Stearic acid and oleic acid are representative additives for forming an adsorbed layer, which often can contribute to lubricating performance of lubricants. The property of an adsorbed additive layer is closely related to the practical performance, and the solution of its formation mechanism improves the practical performance. However, it is difficult to analyze an adsorbed additive layer in-situ. Frequency Modulation Atomic Force Microscopy (FM-AFM) can observe not only topography but also structured liquid at interfaces. Hence FM-AFM can be expected as a new method for in-situ analysis of adsorbed additive layers.</p>

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