Characteristics of Energy and Momentum Transfer at the Solid-Liquid Interfaces of an Ultra-Thin Liquid Water Film Sheared between Solid Surfaces

摘要

Analysis of solid-liquid interfaces to clarify their characteristics of thermal energy transfer and momentum transfer is important not only for basic research on nonequilibrium microscopic thermal and fluid phenomena, but also for practical applications, such as lubrication control under extreme conditions, fabrication of low friction surfaces, and the development of new lubricants. We have been working on molecular dynamics simulation of sheared liquid films confined by solid surfaces, where both energy and momentum transfer are present simultaneously. Monatomic and linear molecules were employed as liquid and various interesting findings were reported by the previous study. In the present report, liquid water film is analyzed and the characteristics of the energy and momentum transfer at the solid-liquid interfaces are examined by employing four different solid surfaces, whose configuration have been found to have great influences on those characteristics in cases of monatomic and diatomic liquid films.