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

Over the last decade, extensive efforts have been made on utilizing advanced materials and
structures to improve the properties and functionalities of flexible electronics. While the …

Stretchable electronics, which can retain their functions under stretching, have attracted
great interest in recent decades. Elastic substrates, which bear the applied strain and …

The conductive hydrogels always suffered from high internal friction, large hysteresis, and
low capability of accurately predicting physical deformation, which seriously restricted their …

Wearable strain sensors that detect joint/muscle strain changes become prevalent at human–
machine interfaces for full-body motion monitoring. However, most wearable devices cannot …

Skin is the largest organ, with the functionalities of protection, regulation, and sensation. The
emulation of human skin via flexible and stretchable electronics gives rise to electronic skin …

Sensors are widely used in various fields, among which flexible strain sensors that can
sense minuscule mechanical signals and are easy to adapt to many irregular surfaces are …

In the past decade, mechanical metamaterials have garnered increasing attention owing to
its novel design principles which combine the concept of hierarchical architecture with …

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

Flexible and stretchable piezoresistive strain sensors which can translate mechanical stimuli
(strain changes) into electrical signals (resistance changes) provide a simple and feasible …