Directional enhancement of triangular holographic acoustic leaky-wave antennas with reflectors

International Journal of Mechanical Sciences, Год журнала: 2024, Номер 273, С. 109216 - 109216

Опубликована: Март 21, 2024

Язык: Английский

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Guiding near-source elastic waves in a semi-infinite medium

Philosophical Transactions of the Royal Society A Mathematical Physical and Engineering Sciences, Год журнала: 2024, Номер 382(2278)

Опубликована: Июль 29, 2024

In this work, we propose elastic metamaterials with phase discontinuities to steer the propagation of near-source bulk waves in a semi-infinite medium. Our design exploits an array embedded subwavelength resonators tailored masses attain complete shift spanning 0 − 2 π . This control allows for diverse wave functionalities, such as directional refraction and energy focusing. Through use dispersion diagrams generalized Snell’s law, along multiple scattering formulation, analytically demonstrate effectiveness our achieving desired wavefront manipulation. The proposed has potential advance field guiding using find practical applications areas isolating ground-borne vibrations densely urbanized regions harvesting. article is part theme issue ‘Current developments acoustic science (Part 1)’.

Язык: Английский

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Current developments in elastic and acoustic metamaterials science

Philosophical Transactions of the Royal Society A Mathematical Physical and Engineering Sciences, Год журнала: 2024, Номер 382(2278)

Опубликована: Июль 29, 2024

The concept of metamaterial recently emerged as a new frontier scientific research, encompassing physics, materials science and engineering. In broad sense, indicates an engineered material with exotic properties not found in nature, obtained by appropriate architecture either at macro-scale or micro-/nano-scales. metamaterials can be tailored to open unforeseen opportunities for mechanical acoustic applications, demonstrated impressive increasing number studies. Building on this knowledge, theme issue aims gather cutting-edge theoretical, computational experimental studies elastic metamaterials, the purpose offering wide perspective recent achievements future challenges. This article is part ‘Current developments (Part 1)’.

Язык: Английский

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Surface Wave Manipulation by Metasurfaces in Unsaturated Soil: Theoretical Study

International Journal of Mechanical Sciences, Год журнала: 2024, Номер unknown, С. 109857 - 109857

Опубликована: Ноя. 1, 2024

Язык: Английский

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