Fig. 7. (a) and (b) are typical images of arrays of droplets in traps viewed under polarizing microscopy before and after Smp43 (4.8 μM) treatment, respectively. The images clearly show the switching from radial to bipolar states ((a) and (b) respectively). (c) Percentage of switched LC droplets, after two hours (black squares) and four hours (red dots) as a function of Smp43 treatment at different concentrations. The dashed lines are fits to these two sets of data using Sigmoid function. In this case, the concentrations that show full switching are 4.8 and 3.6 μM for the two-hour and four-hour treatment, respectively.