Figure 5
(a) Sketch of the microchannel constriction with six selected measurement positions. I–III are in the narrow part and IV–VI are in the wider part 50 µm downstream of the center of the constriction. (b) Two-dimensional correlation patterns of normalized g2 (τ = 10 ms) at positions I–III in the central most narrow part of the constriction and at positions IV–VI 50 µm downstream of the center of the constriction. The average flow velocity in the straight channel before the constriction was 6 µm s−1. |