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

Abstract 4D bioprinting is the next-generation additive manufacturing-based fabrication
platform employed to construct intricate, adaptive, and dynamic soft and hard tissue …

An innovative Poisson's ratio (PR) sign-switching stiffness-changing mechanical
metamaterial with potential applicability in automotive and construction industries is …

There are a few shape memory polymers (SMPs) like polylactic acid (PLA) and polyurethane
(PU) that are 4D printable, and other SMPs must be synthesized with a complicated …

In this study, a three-dimensional (3D) beam lattice structure (BLS) with negative Poisson's
ratio (NPR) effect is proposed by applying sinusoid-shaped beams. The finite element model …

There is growing interest in additive manufacturing (AM) of ceramics due to the feasibility of
achieving geometrically complex shapes for various engineering applications. Polymer …

Abstract Four-dimensional (4D) printing is an advanced manufacturing technology that has
rapidly emerged as a transformative tool with the capacity to reshape various research …

Auxetic metamaterials and structures are characterized by their negative Poisson's ratio
meaning that they exhibit lateral expansion under tensile axial loads and densification under …

Compared with traditional energy dissipation structures, negative stiffness metamaterials
can repeatedly dissipate energy without incurring irreversible plastic deformation. The …

Due to the significant mortality rate associated with atherosclerosis-induced cardiovascular
disease, the utilization of advanced intravascular stents with superior mechanical …