Figure 6
(a) Birds-eye-view microscopy image of aspirated polystyrene beads (30 µm diameter). (b) Hologram of polystyrene beads sticking out of the water droplet. (c) Positions of the images (b, d) with respect to the droplet. (d) Hologram of the pipette with an aspirated bead; several beads accumulate at the air–water interface of the droplet. (e) Hologram of the pipette with a bead aspirated at the tip. (f) Water droplet suspended from a pipette (top view microscope). (g) Six successive holograms (added), showing the evaporation process. (h) Water–air interface profiles of the holograms, taken along the radial cross section of the magenta region in (g). Scale bars: 100 µm. |