Tunable Materials
Materials whose properties can be tuned in situ.
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.
Optimal Design of an Acoustic Lens with Anisotropic Metamaterial
By optimizing the sizes of random rigid scatterers in an anisotropic acoustic metamaterial, the lens achieves subwavelength focusing beyond the diffraction limit.
Design and development of one-dimensional acoustic bundle ventilated metamaterial
A one-dimensional kink-fiber acoustic meta-structured blanket is proposed and validated to enable broadband sound absorption while permitting airflow through the structure.
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.
Overcoming dead zones in ultrasonic sensors with acoustic metamaterial
Helmholtz resonator-based acoustic metamaterials reduce ultrasonic group velocity near resonance, improving time resolution and enabling more accurate distance sensing within the sensor dead zone.
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.
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.
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.
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.
Photonic Chern insulators made of gyromagnetic hyperbolic metamaterials
Gyromagnetic hyperbolic metamaterials are shown (via theory and electromagnetic simulations) to form photonic Chern insulators with non-radiative, robust, magnetically switchable unidirectional edge waveguiding.
Topological bands and triply-degenerate points in non-Hermitian hyperbolic metamaterials
A non-Hermitian topological band description for continuous hyperbolic metamaterials reveals triply-degenerate points with quantized topological charges and supports bulk-edge correspondence via Maxwell-equation simulations.
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.
Acoustic higher-order topological insulator on a Kagome lattice
An acoustic metamaterial with a breathing Kagome lattice realizes a second-order topological insulator whose corner states are topologically protected yet reconfigurable by corner shape.
Metamaterial Superconductors
Engineered electromagnetic metamaterials (e.g., ENZ and hyperbolic) can enhance electron pairing and yield higher-Tc superconductivity than pure aluminium, with projections for other materials.
Retrieval of all effective susceptibilities in nonlinear metamaterials
A generalized nonlinear transfer-matrix method enables retrieval of all effective nonlinear susceptibility terms in anisotropic electromagnetic metamaterials, demonstrated via sum frequency generation.