This is amazing. People used to make fun of sci-fi lovers. We are living in a exciting time. Harmony, Barbara
3-D printing has already triggered a revolution in manufacturing by allowing people to determine the length, width and depth of an object that they want to create. But thanks to research being conducted at the University of Colorado, Boulder, a fourth dimension can now be included – time. Might sounds like science fiction, until you realize that the new manufacturing process will make it possible to print objects that change their shape at a given time.
Led by Prof. H. Jerry Qi, the scientific team have developed a “4D printing” process in which shape-memory polymer fibers are deposited in key areas of a composite material item as it’s being printed. By carefully controlling factors such as the location and orientation of the fibers, those areas of the item will fold, stretch, curl or twist in a predictable fashion when exposed to a stimulus such as water, heat or mechanical pressure.
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