Previously, we demonstrated sperm-microcarrier guidance in a 2D channel using a hand-held permanent magnet, which is adequate for in situ or in-vitro experiments. When in vivo applications become reality, electromagnetic devices will be preferred to control the locomotion and direction of sperm-hybrid microcarriers in three dimensions. For this purpose, we conducted a series of experiments utilizing a set of electromagnetic coils and an optical-based feedback control algorithm. In Figure we depicted a rotating magnetic field of 5 mT m -1 and 0.5 Hz, in which microcarriers followed the magnetic field direction with relative ease. We attempted to steer a microcarrier along an 8-shaped trajectory using closed-loop feedback control in this experiment. Ultimately, sperm cells were added to the channel. We observed that the sperm-microcarrier systems tracked the rotating magnetic field without losing their motile cargo.