Construction
A novel mechanical metamaterial with tunable mechanical and compression-torsion properties
A proposed mechanical metamaterial tunes Poisson’s ratio, elastic modulus, and compression–torsion properties by altering unit cell number and how unit cells are combined, aiming to reduce redesign and manufacturing cost.
Mechanical analysis of composite leaf springs made by 4D printing method
4DPC composite leaf springs curl from a flat layup into a curved beam, and residual stresses at the 90° layer surface reduce tensile loading enough to improve fatigue resistance.
4D printing for crack trapping and adaptive damage-tolerant structures
A review synthesizes how 4D printing can enable crack trapping and damage-tolerant behavior through smart, metamaterial-based self-sensing and time-dependent shape change.
Shape-morphing greenhouse: design of a thermally responsive transparent 4D-printed structure
A proof-of-concept transparent 4D-printed PLA greenhouse structure was tested for thermally driven shape-morphing ventilation using bio-inspired mechanisms, showing concept potential but material and structural limits.
4D printed hydromorph biocomposites with shape change and force generation properties: progress towards structural actuation
4D-printed flax/PLA hydromorph biocomposites can be tuned to deliver water-driven shape change with blocked force and energy density comparable to wood, supporting structural actuation design.
Rotary 4D Printing of Programmable Metamaterials on Sustainable 4D Mandrel
A rotary 4D printing workflow fabricates modular, multi-material programmable mechanical metamaterials on a shape-morphing mandrel, enabling programmable stiffness and multi-DOF shape recovery.
Design, modelling and experimental validation of bipenniform shape memory alloy-based linear actuator integrable with hydraulic stroke amplification mechanism
A bio-inspired bipenniform SMA coil linear actuator is modelled and experimentally validated, achieving 257 N at 15 V and reduced drive mechanism weight and energy versus a stepper motor benchmark.
Acoustic Metamaterial Nanogenerator for Multi-Band Sound Insulation and Acoustic–Electric Conversion
An acoustic metamaterial nanogenerator uses multi-local resonance to deliver tunable multi-band sound insulation (up to 40 dB) while converting low-frequency sound into electricity via a TENG.
Lactobacilli in Material Science: Sustainable Biopolymers and Self-Healing Technologies
Lactobacilli-based biofabrication is presented as a route to biodegradable biopolymers, self-repairing concrete, and antimicrobial coatings.
Tailored continuous flax fiber-reinforced shape memory polymer biocomposites: Enhanced thermomechanical and shape memory performance for sustainable structural applications
Continuous flax fiber-reinforced shape memory polymer biocomposites are tailored to improve thermomechanical behavior and shape-memory performance for sustainable structural use.
Cold sintering as an enabler for self-healing ceramics: A perspective on sustainable, damage-tolerant materials
A perspective argues that cold sintering can enable self-healing ceramic architectures and even in-field repair, potentially reducing energy-intensive processing while improving damage tolerance.
Quasi-static shape control of soft, morphing structures
A general quasi-static shape-control framework for soft morphing structures is developed, analyzing how large deformations and compliance affect equilibrium topology and stability, illustrated with a snap-through-prone Kirchhoff rod.
Integrated damage sensing and self-healing in polymers and composites: Progress and opportunities
The article reviews how integrated damage sensing and self-healing can be achieved in polymers and composites, contrasting living materials with synthetic strategies and outlining opportunities to expand beyond soft polymers.
Metamaterial acoustic barriers for traffic noise control in urban zones
Geometrically periodic acoustic metamaterial barriers, tested at 1:10 scale, can reduce traffic noise, with porous polyethylene layers improving absorption over a wide frequency range.
Inverse design of programmable shape-morphing kirigami structures
A two-stage inverse-design framework links kirigami geometry to mechanics to create shape-morphing structures that deploy from compact to target states under mechanical stimuli.
Mechanical Properties, Self-Healing Characteristics, and Chloride-Ion Penetration Resistance of Cement-Free Composites Incorporating Aluminosilicate Material-Based Capsules
Cement-free alkali-activated composites containing aluminosilicate capsules show improved self-healing-related strength recovery and substantially better chloride-ion penetration resistance.
Shape-retaining beam-like morphing structures via localized snap through
Bistable arch-on-compliant-base units can snap through to multiple stable shapes, and arrays can be inverse-designed to morph into target stable configurations.
Smart insulating material with UV-triggered self-healing and aggregation-induced emission-based damage visualization via microcapsules
A smart insulating material uses UV to trigger self-healing and employs microcapsules with aggregation-induced emission to visualize damage.
Exploring the Effect of a Cement-Based Self-Healing Additive (CS) on the Durability of Cementitious Materials
A cement-based self-healing additive (CS) improves concrete durability by refining pore structure and enabling hydration products to fill load-induced microcracks.
Inverse design and additive manufacturing of shape-morphing structures based on functionally graded composites
An inverse design method controls local bending stiffness in functionally graded composites to produce kirigami-like shape-morphing structures that match target 3D shapes in simulations and experiments.
Shape-morphing structures based on perforated kirigami
Perforated kirigami uses a designed porosity distribution (via tapered-width cuts with uniform thickness) to tune bending stiffness and achieve target axisymmetric 3D morphing shapes.
Origami Single-end Capacitive Sensing for Continuous Shape Estimation of Morphing Structures
A single-end origami-integrated capacitive sensing method (FxC) can track continuous morphing shape by correlating capacitive signals with geometry via deep learning.
Three-Dimensional Percolation Modeling of Self-Healing Composites
3D percolation simulations show that embedded glue-carrying cells delay fatigue and that conductance can track degradation, with strong competition between healing cells in three dimensions.
Inverse design of acoustic metamaterial sound barriers for road traffic noise control
An inverse-design framework links measured road-noise spectra to optimized nested-Helmholtz acoustic metamaterial unit cells, yielding broader bandgap attenuation confirmed by impedance-tube tests and field trials.