Host: The Japan Society of Mechanical Engineers
Name : [in Japanese]
Date : September 05, 2021 - September 08, 2021
A magnetic fluid is a fluid with magnetic properties. The magnetic fluid is made by mixing a dispersant with a base liquid and dispersing a ferromagnetic material to the nanoparticle level in the liquid. These magnetic fluids are widely used in the fields of engineering and medicine. However, conventional magnetic fluid production methods are complicated and take a long time. Therefore, a simpler method of dispersing particles in liquid is required. In this study, we clarified the condition to generate plasma in liquid. Moreover, we developed a production method of liquid with dispersed particles by using the characteristics of nanoparticle generation in liquid plasma. The results showed that the breakdown voltage was decreased slightly as the distance between the electrodes increased. The breakdown voltage tended to decrease as the pulse width increased. Small black particles were dispersed in the upper liquid. We have concluded that these particles are ferromagnetic nickel particles.
