Figure 1
From: Active Printed Materials for Complex Self-Evolving Deformations
(A) Left: rendered illustration of the linear stretching primitive. It is an assembly of rigid disks with expanding materials in the middle. By adjusting the ratio of expanding materials to rigid disks, it is possible to control the length of stretching. Right: video frames of the fabricated primitive stretching in water over time. (B) Left: rendered illustration of the ring stretching primitive. This is based on expansion of the ring shape into a bar. We adjust the stretching length by controlling the radius of the ring. Right: video frames of the fabricated primitive stretching in water over time. (C) Left: rendered illustration of the folding primitive. This design is also composed of bars and disks. The disks in the center act as stoppers. By adjusting the distances between the stoppers it is possible to set the final folding angle. Right: video frames of the fabricated primitive folding in water over time.
