Fig. 6. Applications of the 4D programmable surface as an unusual type of dynamic 3D display system.

Schematic illustration (a) and optical image (b) of the programmable surface serving as a projection screen. c Schematic illustrations and selected frames from Supplementary Movie 10 of a moving ball projected onto the surface as the shape of the surface morphs to create an illusion of actual physical interactions due to surface modulation, gravity, and inertial effects. Scale bars, 5 mm.