The present work was conducted to estimate the effects of the electric field on H2O/Fe(3)O(4)inanofluid dynamical behavior in an atomic microchannel. The physical attributes of these structures were simulated using the LAMMPS package. Certain physical parameters were recorded, such as kinetic energy, polentiallatom energy, radial distribution function, density, temperature, and velocity profiles of nanofluid in various microchannels structure. Enhancing, the outer electric field resulted in boiling phenomena in H2O/FeO4 nanofluid in a shorter time. Furthermore, our findings revealed that the strength of the outer electric: field is an essential factor in nanofluid atomic behavior. Numerically, by external electric field strength enhancing, the highest values of velocity, density, and temperature reach lo 0.038 g/cm(3), 0.083 kps, and 714 K. Also, the boiling phenomena in nanofluid structure occurred after 05 ns, 025 ns, and 021 ns. (C) 2020 Elsevier B.V. All rights resented.