抄録
Recently, the micro/nano devices in the research area of life science, e.g. development of DNA chips or μ-TAS, have received considerable attention. The nanoscale fluids engineering research is very important to develop the industrial products, which must be designed from the microscopic viewpoint, because the fluid phenomena in such small devices are governed by the molecular force, coulomb force and so on. The behavior of nanodroplet provides the basic interests in nanoscale fluid engineering. There are a huge number of classical studies based on Navier-Stokes equations on the drop formation mechanism, mass transfer characteristics and interfacial phenomena, e.g. oscillation or breakdown. The comparison of the microscopic research with the classical results must be very important and interesting. In the present paper, the interfacial phenomena of nanodroplet in vacuum, in the vapor, and in different gas are numerically analyzed by the molecular dynamics simulation. The molecular diffusion and the formation of so-called the interfacial layer at the interface are quantitatively investigated as the basic knowledge in nanoscale fluids engineering.
