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Scientists progress toward 3-D printed items that 'remember' shape over time

from The Christian Science Monitor

3-D printing is a process by which objects are created by piling layer upon layer of some material to create an almost limitless range of shapes and designs. While the objects created by 3-D printing are extremely versatile, once printing is complete, they are generally limited to a single form. Now, however, researchers have made exciting new advances in "4-D printing," a method of 3-D printing that allows objects to change over the fourth dimension, time. more

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