FIG. 5.

(a) Weighting the pixels of the pre-concentration region to account for the spatial field non-uniformities for applying pixels in the ROI towards quantitative comparisons of relative polarizability differences between experiments. Blue curve shows the original normalized pixel light intensity over centerline. Red curve shows normalized weighted pixel intensity for DEP measurements. Green curve shows the normalized signal along centerline after applying the weighting function. Intensity distribution before (b) and after (c) the application of the weighting function is shown.