Nonlinear Dynamics, Journal Year: 2024, Volume and Issue: 112(8), P. 5825 - 5845
Published: Feb. 24, 2024
Language: Английский
International Journal of Mechanical Sciences, Journal Year: 2025, Volume and Issue: unknown, P. 110136 - 110136
Published: March 1, 2025
Language: Английский
Citations
1
Engineering Structures, Journal Year: 2022, Volume and Issue: 275, P. 115288 - 115288
Published: Nov. 18, 2022
Language: Английский
Citations
34
Reports on Progress in Physics, Journal Year: 2023, Volume and Issue: 86(11), P. 116501 - 116501
Published: Sept. 21, 2023
Abstract Acoustic metasurfaces are at the frontier of acoustic functional material research owing to their advanced capabilities wave manipulation an acoustically vanishing size. Despite significant progress in last decade, conventional still fundamentally limited by underlying physics and design principles. First, assume that unit cells decoupled therefore treat them individually during process. Owing diffraction, however, non-locality field could strongly affect efficiency even alter behavior metasurfaces. Additionally, operate modulating phase typically treated as lossless systems. Due narrow regions metasurfaces’ subwavelength cells, losses naturally present compromise performance While wisdom is minimize these effects, a counter-intuitive way thinking has emerged, which harness well loss for enhanced metasurface functionality. This led new generation paradigm empowered non-Hermicity, providing routes controlling sound using version 2D materials. review details non-local non-Hermitian metasurfaces, overview recent designs discussing critical role We further outline synergy between non-Hermiticity, delineate potential platform investigating exceptional points, hallmark physics. Finally, current challenges future outlook this burgeoning discussed.
Language: Английский
Citations
21
Applied Acoustics, Journal Year: 2023, Volume and Issue: 204, P. 109247 - 109247
Published: Feb. 4, 2023
Language: Английский
Citations
17
International Journal of Mechanical Sciences, Journal Year: 2023, Volume and Issue: 255, P. 108475 - 108475
Published: May 18, 2023
Language: Английский
Citations
17
International Journal of Mechanical Sciences, Journal Year: 2024, Volume and Issue: 278, P. 109452 - 109452
Published: June 5, 2024
Language: Английский
Citations
8
APL Materials, Journal Year: 2024, Volume and Issue: 12(2)
Published: Feb. 1, 2024
Sound absorbing materials capable of working in harsh environments (e.g., fire resistance, moisture and pressure resistance) while having excellent low-frequency sound absorption properties are highly desirable for many practical applications. Recently, a new class acoustic absorbers based on space coiling folding metamaterials (SCFMs) has emerged. The SCFMs could be comprised rigid plastics, ceramics, metals good candidate developing sound-absorbing devices environments. also enable flexible control with subwavelength structures, addressing the problem poor noise encountered by conventional materials. However, current geometries SCFM meta-atoms do not take full advantage configuration three-dimensional space, limiting their ability properties. Here, we propose an absorber stacked side openings, which effectively absorb line-spectrum as well broadband noise. effects associated geometry resonance modes shown to significantly influence To understand sound-metamaterial interaction, analytical model is obtained study response SCFMs, further validated numerical simulations. Further experiments have demonstrated our proposed metamaterial structure confirmed capability spectrum. This work provides possibilities development novel
Language: Английский
Citations
7
Advanced Functional Materials, Journal Year: 2024, Volume and Issue: 34(37)
Published: May 25, 2024
Abstract Exceptional point (EP), a special degeneracy in non‐Hermitian systems, has exhibited various distinctive wave characteristics. However, the conventional synthesis of scattering EPs acoustics is confined to rather limited methods for breaking Hermiticity, typically requiring intrinsic losses or open interfaces. Here, concept synthesizing theoretically and experimentally demonstrated by leveraging metasurface with fluid‐solid interaction (FSI) water. The incorporation FSI offers novel mechanism customize natural radiation losses. Simulations experiments consistently confirm that synthesized result extremely asymmetric patterns, even case spatially impenetrable metasurfaces. This enhanced spatial symmetry benefits from on interface nonlocal between unit cells. proposed framework, involving interplay sound fluids solids, expected up new possibilities exploring unique physics underwater acoustic applications.
Language: Английский
Citations
7
Advanced Functional Materials, Journal Year: 2024, Volume and Issue: unknown
Published: July 29, 2024
Abstract Bidirectional controllable propagation of waterborne sound holds significant importance in developing multifunctional underwater acoustic and mechanical devices. However, the existing metasurfaces have rarely explored bidirectional modulations. Here, a class Janus metasurface, enabling two‐faced arbitrarily asymmetric wavefront manipulations is reported. A three‐degree‐of‐freedom system facilitated by acoustic‐structure interaction proposed to introduce bianisotropic responses unit cells. Monolayer ultrathin metasurface inversely designed utilizing function‐structure integrated topology optimization framework. Distinct functionalities, including axial oblique focusing, beam splitting, diffusion, are successfully demonstrated. Underwater experiments further conducted validate concept metasurface. The good consistency between experimental simulated results confirms excellent focusing performance. opens up new dimension for designing advanced devices with manipulations.
Language: Английский
Citations
6
Mechanical Systems and Signal Processing, Journal Year: 2023, Volume and Issue: 200, P. 110578 - 110578
Published: July 5, 2023
Language: Английский
Citations
16