Experimentally determined SPB steady state velocity as a function of the driving frequency of the trapezoidal external magnetic field sequence with A/m and A/m for a SPB diameter of 2 µm. In this series of experiments, the magnetically stripe patterned EB layer system was covered by a 700 nm photo resist layer. The theoretically predicted SPB velocity was obtained at a SPB surface to resist distance of 320 nm. The uncertainty of the numerical simulation, and , respectively, was estimated by changing the Co70Fe30 layer thickness in the range of nm in the calculation of the substrate’s MFL by using the analytical approach. Note that above the critical frequency of Hz no directed transport of SPBs was observed (reprinted with permission from Holzinger et al. [27]).