Energy
Heat breaks the rules at the nanoscale and scientists used it to their advantage
Nanoscale gold metamaterials can boost heat transfer across tiny gaps by up to 4×, enabling more efficient thermal management and precision heat engineering.
Anomalous thermal and elastic properties of an epitaxial NiTi film exhibiting R-phase
Transient grating spectroscopy tracks how an epitaxial NiTi film’s shear moduli and thermal diffusivity change across an austenite–R-phase–martensite cycle, suggesting R-phase-driven thermal switching.
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.
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.
4D Printing with Liquid Crystal Elastomers: Materials, Methods, and Emerging Applications
A review summarizes how 4D printing of liquid crystal elastomers enables programmable, reversible shape changes and surveys fabrication methods, integrations, and remaining challenges.
On Nonlinear Dynamics Of A Nonideal Magnetic System With Shape Memory Alloy To Energy Harvesting Using Uncertainty Exponent And Entropy Of Basin Of Attractions Approaches
A nonlinear, non-ideal magnetic energy-harvesting model incorporating a shape memory spring is analyzed via basin-of-attraction fractality and uncertainty/entropy measures to map chaotic/periodic regimes and power-output extremes.
Snap-Through Thermomechanical Metamaterials for High-Performance Thermal Rectification
A snap-through thermomechanical metamaterial thermal diode using SMA springs and bistable copper strips achieves strong, passive thermal rectification with validated experiments and scalable modular stacking.
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.
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.
Acoustic metamaterial in low-frequency underwater noise mitigation
A lightweight, 3-D-printed acoustic metamaterial is proposed and lab-tested to attenuate wide-band low-frequency underwater noise via sound insulation.
HGX: Un Material Cuántico Regenerativo Autorreparable y Multifuncional para una nueva era Tecnológica
HGX is presented as a multifunctional, self-healing quantum-regenerative material claimed to improve batteries, optical fibers, quantum chips, and HL-LHC technologies.
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.
Duct Metamaterial Muffler with Composite Acoustic Porous Media: Acoustic Optimization via Periodic Arrangement, Particle Swarm Optimization and Experimental Validation
A composite acoustic porous duct metamaterial muffler with periodic tortuous channels and optimized porous layers achieves improved broadband transmission loss validated by experiments.
Hydrogel-based flexible metamaterial for underwater acoustic carpet cloaking
A hydrogel-based flexible metamaterial is proposed for underwater acoustic carpet cloaking.
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.
Learning Electromagnetic Metamaterial Physics With ChatGPT
A fine-tuned LLM can predict absorptivity spectra of all-dielectric electromagnetic metamaterial metasurfaces from text geometry prompts and can be used for inverse geometry design.
Fundamental absorption bandwidth to thickness limit for transparent homogeneous layers
A universal bandwidth-to-thickness limit for transparent homogeneous absorber layers is derived via Kramers–Kronig relations and supported by simulations and metamaterial modeling.
Thin Acoustic-Composite Structures With Metamaterial Inclusions for Enhanced Low-Frequency Sound Absorption
Thin porous acoustic composites with tunable labyrinthine metamaterial inclusions achieve enhanced low-frequency absorption via multiresonant behavior confirmed by acoustic tests.
Optical non-Hermitian skin effect in two-dimensional uniform media
A theory shows optical non-Hermitian skin modes can localize in uniform anisotropic lossy media, with localization set by an effective gauge potential and implementable via subwavelength multilayer metamaterials.
Interpretable SHAP-bounded Bayesian optimization for underwater acoustic metamaterial coating design
An interpretability-informed Bayesian optimization method uses SHAP to refine design-space bounds and improve underwater acoustic metamaterial coating designs without extra simulations.
Toroidic and antitoroidic orders in hexagonal arrays of dielectric trimers: magnetic group approach
By breaking specific symmetries in hexagonal dielectric trimer arrays, the authors enable polarization-sensitive toroidal and antitoroidal dipole resonances with high-Q light-matter interaction.
Hybrid acousto-electromagnetic metamaterial superconductors
A hybrid acousto-electromagnetic hyperbolic metamaterial superconductor concept is proposed to enhance superconducting properties via engineered broadband electron-phonon spectral density.
Gear acoustic metamaterial bandgap sound insulation characteristics and optimized design
A gear acoustic metamaterial is optimized (via genetic algorithm) to widen its acoustic bandgap, yielding broadband noise reduction with experimentally reported ~29.6 dB insulation in the band.
Towards a Circular Economy via Intelligent Metamaterials
Software-commandable intelligent metasurfaces/metamaterials are proposed as a design enabler to tune electromagnetic/acoustic/mechanical behavior and reduce waste via circular economy principles.