“Using a new technique known as 4-D printing, researchers can print out dynamic 3-D structures capable of changing their shapes over time.

Such 4-D-printed items could one day be used in everything from medical implants to home appliances, scientists added.”

Read the full article: http://www.nbcnews.com/tech/innovation/beyond-3-d-4-d-printing-makes-items-change-shape-n271901