Seo, Hyeon-Seok Lee, Sangyoup Lee, Jong-Chul 2024-01-20T08:33:01Z 2024-01-20T08:33:01Z 2021-09-02 2014-11 1533-4880 https://pubs.kist.re.kr/handle/201004/126194 In previous research, we studied the electrical breakdown characteristics of a transformer oil-based magnetic fluid; mailnly, those were carried out by the experimental measurements. The first study was aimed at enhancing the dielectric breakdown voltage of transformer oil by adding magnetic nanoparticles experimentally under the official testing condition of dielectric liquids. The next study was focused on explaining the reason why the dielectric characterisitics of the fluids were changed through optically visualizing the particles motion in a microchannel using an optical microscopic measurement and numerically calculating the dielectrophoretic force induced in the fluids with considering only the properties of magnetic nanoparticles. In this study, we developed a simplified unified model for calculating further the motion of magnetic nanoparticles suspended in the presence of electrohydrodynamic field using the COMSOL multiphysics finite element simulation suite and investigated the effects of magnetic nanoparticle dielectrophoretic activity aimed at enhancing the electrical breakdown characteristics of transformer oil. English AMER SCIENTIFIC PUBLISHERS DIELECTRIC-BREAKDOWN Simplified Unified Model for Estimating the Motion of Magnetic Nanoparticles Within Electrohydrodynamic Field Article 10.1166/jnn.2014.9976 1 JOURNAL OF NANOSCIENCE AND NANOTECHNOLOGY, v.14, no.11, pp.8641 - 8645 JOURNAL OF NANOSCIENCE AND NANOTECHNOLOGY 14 11 8641 8645 scie scopus 000344126500093 2-s2.0-84908409006 Chemistry, Multidisciplinary Nanoscience & Nanotechnology Materials Science, Multidisciplinary Physics, Applied Physics, Condensed Matter Chemistry Science & Technology - Other Topics Materials Science Physics Article DIELECTRIC-BREAKDOWN Magnetic Nanoparticle Magnetic Fluid Dielectrophoretic Activity Dielectric Breakdown Voltage Transformer Oil