Fig. 1: Vibration transformations of a steel bead (rigid-body), a hydrogel bead (soft-matter), and a droplet on a patterned stage.
From: Droplet-based mechanical transducers modulated by the symmetry of wettability patterns
a The scheme of the vibration test. The vibration stage is driven by a sinusoidal signal, with a frequency of 30 Hz and an amplitude of 350 μm. Here D is the displacement of the stage. b The no deformation response of the steel bead and the symmetric deformation response of the hydrogel bead to the stage vibration. c The height variation of the steel and hydrogel beads at different displacements of a vibrating cycle. d The asymmetric deformation response of the droplet. e The height variation of the droplet during the vibration. The insets are the pictures of droplet morphology during vibration.
