Separated by differing electrophoretic mobilities, analytes migrate toward the electrode of opposite charge. Thereby ions of different mobilities undergo different trajectories. Meijer also developed novel semiconducting polymers with high electron mobilities. Multiple analytes with sufficiently different ionic mobilities will form multiple plateau zones. These different rates of advancement (different "electrophoretic mobilities") separate into "bands" within each "lane". High charge carrier mobilities for holes and electrons were obtained. Both electron and hole mobilities are positive by definition. Hole and electron mobilities were expected to be nearly identical. This is a result of higher carrier mobilities and lower resistive device parasitics. Measured carrier mobilities for electrons and holes are shown in Figure 4. The latter problem can occur if electron and hole mobilities are not matched. Several typologies have been formulated to clarify the wide variety of mobilities. The carrier mobilities are much smaller than that of silicon. OFF switching ratio and carrier mobilities. This results in varying mobilities dependent on the direction of current flow.