Figure 2.

(Top) Illustration of three adjacent gates within a hypothetical g-iDEP channel. One of two target analytes is selectively captured and concentrated at the center gate. The other target analyte is captured at the gate to the right. (Bottom) Since gate pitch decreases along the channel in a determinate manner, distance is used to relate the resolvability of two target species. Note capture zones are of finite width, indicating dispersive effects including diffusion, field inhomogeneity, electrothermal effects, diffusion and particle-particle interaction.