| In this study, a low-pressure control method for an arc-submerged nanoparticle synthesis system (ASNSS) was proposed and developed for CuO nanoparticle fabrication. This study investigates into the rheology of CuO nanofluid having different mean particle sizes. Experimental results indicate that the pH value of the CuO nanofluid fabricated in this study is 6.5, which is far smaller than isoelectric point (i.e.p) of pH 10. The CuO nanofluid with larger mean particle sizes has a larger shear stress when the shear rate of different mean particle sizes are the same. Moreover, the smaller the mean particle size of the CuO nanofluid, the higher its viscosity is because of the larger the specific surface area, and the electrostatic force between particles would also be increased. |
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