Mechanical metamaterials enable the creation of structural materials with unprecedented
mechanical properties. However, thus far, research on mechanical metamaterials has …

Mechanical metamaterials are a class of functional materials with designability and
extraordinary mechanical properties. Due to the manufacturing limitation of traditional …

Mechanical metamaterials are engineered materials with unconventional mechanical
behavior that originates from artificially programmed microstructures along with intrinsic …

Liquid crystal elastomers (LCEs) are renowned for their large, reversible, and anisotropic
shape change in response to various external stimuli due to their lightly cross‐linked …

Liquid crystal elastomers (LCE) are appealing candidates among active materials for 4D
printing, due to their reversible, programmable and rapid actuation capabilities. Recent …

Auxetic materials and structures have attracted increasing attention because of their
extraordinary mechanical properties. Various types of auxetic tubular structures have been …

Mechanical metamaterials and phononic crystals enable localizing, focusing, and guiding of
elastic or acoustic waves in various ways. Here, we describe the physical mechanisms …

Active mechanical metamaterials (AMMs)(or smart mechanical metamaterials) that combine
the configurations of mechanical metamaterials and the active control of stimuli‐responsive …

The rapid development of 3D printing has led to considerable progress in the field of
biomedical engineering. Notably, 4D printing provides a potential strategy to achieve a time …

Abstract 4D printing is an emerging field in additive manufacturing of time responsive
programmable materials. The combination of 3D printing technologies with materials that …