Nanoparticle-dispersed high-performance liquid fluid, production method and apparatus for the fluid, and leak detection method for the fluid

A production method to produce a nanoparticle-dispersed high-performance liquid fluid, comprising:

• vaporizing and mixing together material of a liquid fluid and material of nanoparticle under an inert gas atmosphere to form a vaporized mixture;
• separating a nanoparticle/fluid atom complex from other atomic constituents of the liquid fluid and the nanoparticles by means of issuing the vaporized mixture from a small hole under vacuum atmosphere depending on mass differences, the nanoparticle/fluid atom complex being in a form where constituting atoms of the material of the liquid fluid are adsorbed on the surfaces of the nanoparticles produced by the vaporization and mixing;
• and
• dispersing the separated nanoparticle/fluid atom complex in the liquid fluid, and the liquid fluid including a liquid fluid base material.