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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.
Numerical Study on Shape Recovery Behaviors of Shape Memory Polymer Composite Hinges Considering Hysteresis Effect
A hysteresis-inclusive constitutive model for SMPC hinges enables finite element prediction of recovered configurations and identifies design factors to improve shape recovery ratio.
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.
Hydrogel-based flexible metamaterial for underwater acoustic carpet cloaking
A hydrogel-based flexible metamaterial is proposed for underwater acoustic carpet cloaking.
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.
Invisible design and acoustic scattering of metamaterial plates with active feedback control
Active feedback-controlled metamaterial plates are designed to reduce low-frequency acoustic scattering by tuning dynamic effective density, enabling “invisible” behavior for underwater vehicles.
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.
Compliant morphing structures from twisted bulk metallic glass ribbons
Pre-twisted bulk metallic glass ribbons thermoformed into helicoidal stress-free states act as compliant joints, enabling deployable morphing configurations and multi-ribbon systems.
A metamaterial with applications in broad band antennas used in radio astronomy and satellite communications
A laboratory-fabricated meta-horn antenna built from manufacturable meta-rings demonstrates an excellent octave-bandwidth feature with improved cross-polarization for radio astronomy and satellite communications.
A Three-dimensional Constitutive Model for Polycrystalline Shape Memory Alloys Under Large Strains Combined With Large Rotations
A finite-deformation 3D constitutive model for polycrystalline SMAs is proposed to capture large transformation strains and large rotations using logarithmic strain and internal state variables.
Manufacturing of 3D-metallic electromagnetic metamaterials for feedhorns used in radioastronomy and satellite communications
A new metallic meta-ring electromagnetic metamaterial is theoretically justified and fabricated, enabling a compact prototype microwave antenna with a 2:1 bandwidth for radioastronomy and satellite communications.
Optical left-handed metamaterials made of arrays of upright split-ring pairs
Simulations suggest an optical left-handed metamaterial made from upright split-ring pairs can achieve strong double-negative behavior and negative refraction in the near-IR.
Inhomogeneous All-Dielectric Magnetic Metamaterials
An experimentally tested inhomogeneous all-dielectric magnetic metamaterial with permeability varying from positive to negative enables localized electromagnetic field enhancement and resonant absorption under oblique incidence.