表面プラズモン共鳴顕微鏡を利用したEHL油膜圧力の高時間分解能計測

抄録

This study newly developed a hybrid system based on surface plasmon resonance (SPR) and optical interference microscopy, and investigates its suitability and limitations for measuring oil film pressure under elastohydrodynamic lubrication (EHL) sliding conditions. Specific optical setting conditions such as the incident angle and thickness of each film layer for surface plasmon excitations and for oil film pressure measurements were designed based on numerical calculations and demonstration experiments. Through some experiments, the advantages of SPR microscopy, i.e., the high spatial and temporal resolution, were demonstrated. Furthermore, by clarifying the limitations of SPR microscopy, its potential applicability for optical EHL observation systems was verified.