Nano-level manufacturing by multifunction cavitation

Abstract

This work assessed the fundamental characteristics of multifunction cavitation (MFC), that was high-temperature and high-pressure cavitation, through both experimental investigations. The application of ultrasonication to the floating cavitation of a water jet was found to produce microjets containing hot spots. MFC exhibited the capacity to perform nano-level hot work at a material surface, modifying the surface morphology and the surface electrochemical condition by hot spot melting. Ultrasonic irradiation of a water jet during floating cavitation was used to generate microjets with hot spots and this MFC process was employed to perform hot work on titanium oxide (TiO 2) particles as well as an ITO (Indium Tin Oxide) film on soda-lime glass and CFRP (Carbon Fiber Reinforced Plastics).