Fig. 3
From: A multiplexed magnetic tweezer with precision particle tracking and bi-directional force control
a Resolution of 2.8 μm beads for different conditions using a 0.55 NA 40× objective. b Resolution using different sized beads when subtracting one reference bead using a 0.45 NA 20× objective and a 0.55 NA 40× objective. All error bars represent the standard error of the mean (SEM) of two separate data sets of 3–9 measurements obtained on different days