Results 121 to 130 of about 13,339 (215)
Effective Parameters of Acoustic Metamaterials
Russian Physics Journal, 2018 Analytical expressions are presented for the wave number, the characteristic wave impedance, and the refractive index of homogeneous longitudinal plane waves propagating in an acoustic metamaterial with dissipative losses. The metamaterial is characterized by the effective scalar material parameters: the complex density and the compressibility.
openaire +2 more sources
Skyrmionic Polarization Textures in Structured Dielectric Planar Media
Nanophotonics, Volume 15, Issue 3, 12 February 2026.Topological skyrmionic textures are typically associated with the structure of optical fields. This work demonstrates that they can also emerge from the optical response of structured metasurfaces. Through engineered light–matter interaction, polarization eigenstates acquire nontrivial topology, which can be mapped into the Chern‐insulator physics ...
Francesco Di Colandrea +2 more
wiley +1 more source
Fabrication‐Directed Entanglement for Designing Chiral and Anisotropic Metamaterial Foams
Advanced Engineering Materials, Volume 28, Issue 2, January 21, 2026.This work introduces fabrication‐directed entanglement (FDE), combining viscous thread printing and topology optimization to program entangled foams with spatially patterned stiffness. By tuning coil density, FDE enables anisotropy, programmable Poisson's ratio, and chirality in foams.
Daniel Revier +3 more
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Multi-Order Asymmetric Acoustic Metamaterials with Broad Bandgaps at Subwavelength Scales. [PDF]
Materials (Basel), 2023 Wang X, Chen W, Li S.
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International Journal for Numerical Methods in Engineering, Volume 127, Issue 1, 15 January 2026.ABSTRACT Steering a system towards a desired target in a very short amount of time is a challenging task from a computational standpoint. Indeed, the intrinsically iterative nature of optimal control problems requires multiple simulations of the state of the physical system to be controlled. Moreover, the control action needs to be updated whenever the
Matteo Tomasetto +2 more
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International Journal for Numerical Methods in Engineering, Volume 127, Issue 1, 15 January 2026.ABSTRACT This paper proposes a novel adaptive topology optimization framework that integrates the Virtual Element Method (VEM) with the Material‐Field Series Expansion (MFSE). Within the VEM‐MFSE framework, we propose a material gradient‐driven adaptive strategy, in which elements are refined in regions with higher material density gradients as the ...
Siqi Zhang, Kai Yang, Bing‐Bing Xu
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An adjustable acoustic metamaterial cell using a magnetic membrane for tunable resonance
Scientific ReportsAcoustic metamaterials are growing in popularity for sound applications including noise control. Despite this, there remain significant challenges associated with the fabrication of these materials for the sub-100 Hz regime, because acoustic ...
Alicia Gardiner +3 more
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Phonon Engineering of Micro- and Nanophononic Crystals and Acoustic Metamaterials: A Review. [PDF]
Small Sci, 2023 Ma J.
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Synthetic Pseudo-Spin-Hall effect in acoustic metamaterials. [PDF]
Nat Commun, 2022 Weiner M, Ni X, Alù A, Khanikaev AB.
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Acoustic metamaterials-driven transdermal drug delivery for rapid and on-demand management of acute disease. [PDF]
Nat Commun, 2023 Xu J +14 more
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