Fig. 6.

Time-lapse images of sorting in action. Circles track the trapped colloid, shifted across streamlines and sorted into exit 2. A reference 3-colloid aggregate is outlined that traverses the same streamline as the trapped colloid and takes exit 1. The vacant laser trap after colloid release is marked with an × . The attached schematic of the microfluidic device locates the field of view of the camera ( Media 3 ^{(647.1KB, MOV)} ).