Figure 5
From: Phase holograms for the three-dimensional patterning of unconstrained microparticles
Normalized forces experienced by a single polyethylene microsphere located at the target pressure image location at different starting x positions for lenses 1 to 3 (a–c). The forces are normalized by the microsphere’s weight in a vacuum. The solid curve is the acoustic radiation force, lines with arrows are net force when the initial position is at stable (solid circle) or unstable (open circle) region before the acoustic exposure. Locations with zero x-component radiation acoustic force are marked by square that show stable (solid) or unstable (open) equilibrium.
