4D printing

3D printing that changes shape according to certain stimuli.

4-dimensional printing uses the same techniques of 3D printing through computer-programmed deposition of material in successive layers to create a three-dimensional object. However, in 4D printing, the resulting 3D shape is able to morph into different forms in response to environmental stimulus, with the 4th dimension being the time-dependent shape change after the printing. It is therefore a type of programmable matter, wherein after the fabrication process, the printed product reacts with parameters within the environment and changes its form accordingly.

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