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Article
Materials Science, Multidisciplinary
Xiaoyong He et al.
Summary: Tunable Fano resonances in the THz regime were analyzed using three-dimensional Dirac semimetal (DSM)-strontium titanate (STO) elliptical hybrid metamaterials, considering the effects of asymmetric degrees, DSM Fermi levels, and operation frequencies. An obvious Fano peak was observed by introducing a displacement between STO and DSM resonators, with an amplitude modulation depth of 49.5% for the transmission peak and 86.65% for the reflection dip. Additionally, modifying the Fermi level of DSM layer resulted in an amplitude modulation depth of 32.86% for the transmission peak and 67.26% for the reflection dip. These findings provide insights into the tunable mechanisms of DSM metamaterials and have implications for the development of plasmonic devices.
OPTICAL MATERIALS EXPRESS
(2023)
Article
Chemistry, Multidisciplinary
Zhendong Li et al.
Summary: This study presents a decoupled approach to design acousto-mechanical multifunctional metamaterials. By leveraging the morphology of a Helmholtz resonator, the sound-absorbing and mechanical components are designed independently. Experimental results show remarkable broadband sound absorption and high deformation resilience and impact resistance.
MATERIALS HORIZONS
(2023)
Article
Chemistry, Multidisciplinary
Junzhe Zhang et al.
Summary: This study constructs a semi-empirical model to predict the sound absorption performance of composite structures consisting of open-cell foam and perforated plates. The optimized composite structure can lower the peak sound absorption frequency while broadening the sound absorption frequency band by using a genetic algorithm.
APPLIED SCIENCES-BASEL
(2023)
Article
Engineering, Manufacturing
Zhendong Li et al.
Summary: This study proposes a novel multifunctional microlattice metamaterial based on a hollow truss-plate hybrid design, which is realized by digital light processing 3D printing. Experimental results show that this material exhibits excellent sound absorption and mechanical properties, achieving quasi-perfect sound absorption and broadband half-absorption. The sound-absorbing capacity relies on the designed cascaded Helmholtz-like resonators, and the physical mechanisms behind the absorptive behaviors are revealed through numerical analyses. Additionally, this material displays superior modulus and strength compared to conventional cellular materials and modified microlattices, attributed to the near-membrane stress state of the plate architecture and the mechanically robust behavior of the hollow struts. This work presents an effective approach for designing and engineering multifunctional metamaterials through 3D printing.
VIRTUAL AND PHYSICAL PROTOTYPING
(2023)
Article
Engineering, Manufacturing
Zhonggang Wang et al.
Summary: This paper proposes a hierarchical metamaterial that can absorb both sound and mechanical energy by modulating its structural features. The material has an increasing absorption bandwidth and can absorb energy at different frequencies. The unique resonant responses of the material are demonstrated through analysis and experiments, and the enhancement mechanism is revealed. Compared to the original material, the hierarchical metamaterial shows significantly improved specific energy absorption.
VIRTUAL AND PHYSICAL PROTOTYPING
(2023)
Article
Nanoscience & Nanotechnology
Zhendong Li et al.
Summary: Although mutually independent, simultaneous sound absorption and superior mechanical properties are often sought after in a material. Herein, we propose a bamboo-inspired design strategy to overcome the aforementioned challenges. The concept is experimentally verified through samples fabricated using selective laser melting with the Inconel 718 alloy, and high sound absorption coefficients, damage-tolerant behavior, high specific strength, and high specific energy absorption have been realized in this design.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Chemistry, Multidisciplinary
Xinwei Li et al.
Summary: This study presents the design of a high-strength microlattice material with sound-absorbing and deformation-tolerant properties through modifying state-of-the-art bioinspired structures. By introducing dissipative pores and geometrical heterogeneities, the material exhibits enhanced sound absorption performance. The optimized microlattice achieves a high absorption coefficient across a broad frequency range with a low thickness, and it also demonstrates improved deformation tolerance and energy absorption capacity.
ADVANCED FUNCTIONAL MATERIALS
(2023)
Article
Acoustics
Junzhe Zhu et al.
Summary: This study designed a multi-layer overlapping structure acoustic absorber, and through numerical simulation and experimental verification, confirmed its good sound absorption performance within continuous broadband at lower frequencies.
Article
Materials Science, Multidisciplinary
Xiaoyong He et al.
Summary: This study investigates the tunable propagation properties of Dirac semimetals modified hybrid plasmonic waveguides in the THz region. The effects of structural parameters, the shape of dielectric fiber, and Fermi levels of DSM layers are systematically studied using the finite element method. The results show that these parameters significantly affect the propagation properties and have potential applications in the design of plasmonic devices.
OPTICAL MATERIALS EXPRESS
(2022)
Article
Chemistry, Multidisciplinary
Sangryun Lee et al.
Summary: The design of lattice structures involves a trade-off between density and mechanical properties. This study introduces a deep learning approach using high-order Bezier curves to explore the optimized shape of beam elements in lattice structures. The optimized design smartly distributes material towards the weakest location, achieving the highest modulus and strength. Experimental validation shows that the optimized design outperforms benchmark ones in terms of modulus and strength.
MATERIALS HORIZONS
(2022)
Article
Chemistry, Multidisciplinary
Fuyin Ma et al.
Summary: This paper proposed a metamaterial design method that uses soft matter to improve broadband sound absorption performance. By attaching a flexible PVC gel layer to a cavity-type sound-absorbing metamaterial structure, it significantly enhanced the absorption performance and achieved resonance absorption effect.
MATERIALS HORIZONS
(2022)
Review
Materials Science, Multidisciplinary
Nansha Gao et al.
Summary: Noise pollution is a significant global problem, and conventional acoustic materials are ineffective in reducing noise. However, acoustic metamaterials offer new solutions for controlling sound waves and have great potential in mitigating noise propagation. This review discusses the development, classification, physical mechanisms, applications, and future trends of acoustic metamaterials for noise reduction.
ADVANCED MATERIALS TECHNOLOGIES
(2022)
Article
Materials Science, Multidisciplinary
Zhiwen Ren et al.
Summary: In this study, a novel compact multifunctional metastructure was proposed for low-frequency broadband sound absorption and crash energy dissipation. The metastructure, consisting of cavity resonators with internally extended tubes with a hexagonal honeycomb configuration, was optimized to improve sound absorption performance. Experimental results showed that the designed metastructure achieved quasi-perfect broadband sound absorption and exhibited the same crash energy dissipation performance as an intact honeycomb structure. This study provides inspiration and methods for the compact and multifunctional design of broadband sound absorption structures.
MATERIALS & DESIGN
(2022)
Article
Engineering, Manufacturing
Zhendong Li et al.
Summary: This study proposes a plate-reinforced dual-functional microlattice metamaterial that exhibits elastic isotropy, dual crushing stages, and ultra-broadband sound absorption. By controlling the structural local strength and modulating the parallel coupling and cascade resonance effects, various application requirements can be met.
VIRTUAL AND PHYSICAL PROTOTYPING
(2022)
Article
Chemistry, Multidisciplinary
Xinwei Li et al.
Summary: Micro-lattice metamaterials have attracted increasing research interest as sound absorbers due to their lightweight nature and high design freedom. However, the current micro-lattices are limited to one sound dissipation mechanism, which hinders their broadband absorption capabilities. In this study, a dissipation mechanism is introduced by hollowing out the struts of the micro-lattice, resulting in a new hollow-truss metamaterial (HTM) that harnesses dual concurrent dissipation mechanisms from its complex truss interconnectivity and hollow interior. Experimental measurements show that HTMs exhibit superior and customizable absorption properties compared to their solid-truss counterparts. An optimal HTM achieves a high average broadband coefficient of 0.72 at a thickness of only 24 mm. The study also proposes a dissipation theorem based on the superimposed acoustic impedance of the outer-solid and inner-hollow phases in the HTM. Mechanical property studies reveal improved compressive toughness in the HTMs. This work highlights the potential of hollow-trusses in achieving dissipative mechanisms and excellent acoustic properties.
Article
Nanoscience & Nanotechnology
Xiaoyong He et al.
Summary: Based on 3D Dirac semimetals, the tunable propagation properties of quasi-bound in continuum resonance have been investigated. The results show that by altering the rotation angle of elliptical resonator, a sharp BIC transmission dip is observed. The DSM Fermi level and the configuration of resonators also affect the BIC resonance, with the Fermi level significantly influencing the resonance and modifying the configuration causing additional transmission dips.
Article
Materials Science, Multidisciplinary
Xiang Yu et al.
Summary: Metallic foams with partially-open window morphology between interconnected pores demonstrate significantly increased flow resistivity and sound absorption coefficient. A new microstructural model for permeability simulation has been developed to account for the increased specific surface area. This study explores a generic approach for designing microstructure-specific foams with increased flow resistance and fully open-celled microstructure.
Review
Materials Science, Multidisciplinary
Guangxin Liao et al.
Summary: Acoustic metamaterials composed of subwavelength periodic artificial structures with specific designs have exceptional abilities to manipulate acoustic waves compared to traditional materials. This review comprehensively investigates and summarizes current advances in acoustic metamaterial research, including theories, structural classifications, manufacturing methods, and applications, with the aim of promoting further development in the field.
ADVANCED MATERIALS TECHNOLOGIES
(2021)
Article
Chemistry, Multidisciplinary
Xinwei Li et al.
Summary: The advancement of 3D printing technology has led to the development of microlattice metamaterials with excellent sound and mechanical energy absorption capabilities. High sound absorption coefficients and specific energy absorption have been measured, with absorption mechanisms and limitations being proposed.
Article
Chemistry, Multidisciplinary
Xinwei Li et al.
Summary: This study develops a novel microlattice-based sound absorber by combining traditional concepts with additive manufacturing, which shows excellent absorption properties and impact resistance. The microlattice material has multiple absorption mechanisms, a broad frequency range, and high deformation recovery capability.
ADVANCED MATERIALS
(2021)
Article
Chemistry, Multidisciplinary
Biwei Deng et al.
Summary: Researchers have generated a series of mechanically isotropic ISO-CMC structures by imitating the natural occupation of periodic volume by inflated soap films, exhibiting bulk moduli over 94% of the theoretical limit. These phenomena are found to be in close relation to the curvature-driven design of their metamaterial structures.
MATERIALS HORIZONS
(2021)
Article
Nanoscience & Nanotechnology
Jun Peng et al.
PHYSICA E-LOW-DIMENSIONAL SYSTEMS & NANOSTRUCTURES
(2020)
Article
Physics, Multidisciplinary
Jung-San Chen et al.
Article
Acoustics
Xiaocui Yang et al.
Article
Acoustics
Ahmed Abbad et al.
JOURNAL OF SOUND AND VIBRATION
(2019)
Article
Acoustics
Takeshi Okuzono et al.
ACOUSTICAL SCIENCE AND TECHNOLOGY
(2019)
Article
Chemistry, Multidisciplinary
Thomas Tancogne-Dejean et al.
ADVANCED MATERIALS
(2018)
Article
Acoustics
Honggang Zhao et al.
Article
Chemistry, Multidisciplinary
Min Yang et al.
MATERIALS HORIZONS
(2017)
Article
Materials Science, Multidisciplinary
Yufan Tang et al.
MATERIALS & DESIGN
(2017)
Article
Multidisciplinary Sciences
Yufan Tang et al.
SCIENTIFIC REPORTS
(2017)
Article
Nanoscience & Nanotechnology
X. H. Zhang et al.
Article
Engineering, Mechanical
Y. Y. Lee et al.
INTERNATIONAL JOURNAL OF MECHANICAL SCIENCES
(2007)
