The simulation study was carried out using the finite element simulation software, COMSOL Multiphysics. The size of zoospores is expected to be around 8-12 µm. In this study, we use 10 µm for the sphere models and modelled the membrane as a 0.1 µm thick dielectric with relative permittivity 1. We started with a channel of 20 µm wide and 20 µm deep while the Z position of the sphere centre is at 10 µm, which is at the middle of the channel. The electric currents (EC), single phase flow (SPF) and transport of diluted species (TDS) modules were used in these simulations.