Handedness in shearing auxetics creates rigid and compliant structures

Author:

Lipton Jeffrey Ian1ORCID,MacCurdy Robert1ORCID,Manchester Zachary2,Chin Lillian1,Cellucci Daniel3,Rus Daniela1ORCID

Affiliation:

1. MIT Computer Science and Artificial Intelligence Lab, Cambridge, MA 02139, USA.

2. School of Engineering and Applied Science, Harvard University, Cambridge, MA 02138, USA.

3. NASA Ames Research Center, Moffett Field, CA 94035, USA.

Abstract

Giving a hand to metamaterials Auxetic materials expand in an unusual way: perpendicular to the direction in which they are stretched. Lipton et al. engineered a type of auxetic material that also has handedness. When this material is sheared, it twists either to the right or the left. By tiling the underlying patterns onto spheres and cylinders, rigid or compliant structures can be made. Linear and 4-degree-of-freedom actuators can thus be made from hollow tubes, which could be valuable for a variety of engineering and medical applications. Science , this issue p. 632

Funder

National Science Foundation

National Aeronautics and Space Administration

Publisher

American Association for the Advancement of Science (AAAS)

Subject

Multidisciplinary

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