Programmable materials: Hydrogels capable of complex movement created

Researchers have developed a process by which 2-D hydrogels can be programmed to expand and shrink in a space- and time-controlled way that applies force to their surfaces, enabling the formation of complex 3-D shapes and motions.

from Engineering and Construction News – ScienceDaily https://www.sciencedaily.com/releases/2018/09/180913134554.htm

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