Presentation Information
[3F14]Development of FM-AFM/LFM system to investigate frictional property of the solid-liquid interfacial structure
*Yuya Yamaguchi1, Kaisei Sato2, Akinori Kogure3, Hiroshi Arai3, Masahiro Ota3, Shinya Sasaki2 (1. Graduate School of Tokyo University of Science, 2. Tokyo University of Science, 3. Shimadzu Corporation)
Oiliness agents with polar groups form adsorption film that reduces friction and wear on sliding surfaces. Previous studies suggested that the friction reduction effect of the oiliness agents involves not only the adsorption film but also the solvation layer at the friction interface. Therefore, to understand the friction reduction effect of oiliness agents, it is necessary to consider the role of the solvation layer. In this study, we developed a new atomic force microscopy (AFM) system combining FM-AFM and LFM, which measures repulsive force and lateral force simultaneously, to investigate the friction reduction mechanism of n-hexadecane with stearic acid. This report presents the results of simultaneous measurements of solid-liquid interfacial structure and frictional properties using the developed FM-AFM/LFM system. We successfully made it possible to simultaneously measure the solid-liquid interface structure and lateral force. The friction coefficient and phase difference against the Z axis provided new insights into the low-friction area.