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Lookup NU author(s): Dr Xinwei LiORCiD
This work is licensed under a Creative Commons Attribution 4.0 International License (CC BY 4.0).
© 2025 authors. Published by the American Physical Society. This paper is a contribution to the Physical Review Applied collection titledPhononics and Metamaterials. Airborne sound insulation is vital for noise reduction across various engineering fields. Traditional mass-based soundproofing methods, while effective, are often hindered by their bulkiness and limited ventilation capability. In contrast, lattice metamaterials provide a lightweight architected alternative with high tunability, enabling the use of periodic geometries to manipulate sound through mechanisms such as Bragg scattering and local resonance. This perspective explores the acoustic capabilities of various lattice morphologies, offers preliminary recommendations on geometry selection for effective sound insulation, and presents a generalized analytical model for predicting sound transmission loss. We also present a forward-looking discussion on the unbounded design potential of lattice topologies, highlighting opportunities for multifunctionality and outlining future directions in smart design, adaptive lattice structures, and data-driven optimization to enable advanced noise control and the development of multifunctional metamaterials.
Author(s): Li X, Wang X, Zhao M, Li Z
Publication type: Article
Publication status: Published
Journal: Physical Review Applied
Year: 2025
Volume: 24
Issue: 6
Online publication date: 11/12/2025
Acceptance date: 21/09/2025
Date deposited: 22/12/2025
ISSN (electronic): 2331-7019
Publisher: American Physical Society
URL: https://doi.org/10.1103/2w5x-vh9f
DOI: 10.1103/2w5x-vh9f
Data Access Statement: The data that support the findings of this article are openly available: https://doi.org/10.17632/2dd82j8sf9.1
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