Mitigating Inaudible Ultrasound Attacks on Voice Assistants With Acoustic Metamaterials by Joshua S. Lloyd, Cole G. Ludwikowski, Cyrus Malik, Chen Shen

Subjects: “…Acoustic metamaterials…”
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Bioinspired acoustic metamaterials: From natural designs to optimized structures by Vinícius F. Dal Poggetto

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Various topological phases and their abnormal effects of topological acoustic metamaterials by Yan‐Feng Chen, Ze‐Guo Chen, Hao Ge, Cheng He, Xin Li, Ming‐Hui Lu, Xiao‐Chen Sun, Si‐Yuan Yu, Xiujuan Zhang

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A review of underwater acoustic metamaterials for underwater acoustic equipment by Zhenjing Zhu, Zhenjing Zhu, Ning Hu, Ning Hu, Junyi Wu, Wenxin Li, Wenxin Li, Jiabao Zhao, Jiabao Zhao, Maofa Wang, Maofa Wang, Maofa Wang, Fanzong Zeng, Fanzong Zeng, Huajie Dai, Huajie Dai, Yongju Zheng, Yongju Zheng

“…In recent years, with the development of acoustic metamaterials technology, all kinds of underwater acoustic metamaterials have also been proposed. …”
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Anisotropic Complementary Acoustic Metamaterial for Canceling out Aberrating Layers by Chen Shen, Jun Xu, Nicholas X. Fang, Yun Jing

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Acoustic metamaterials characterization via laser plasma sound sources by Konstantinos Kaleris, Emmanouil Kaniolakis-Kaloudis, Nikolaos Aravantinos-Zafiris, Dionysios. T. G. Katerelos, Vassilis M. Dimitriou, Makis Bakarezos, Michael Tatarakis, John Mourjopoulos, Michail M. Sigalas, Nektarios A. Papadogiannis

“…Abstract Phononic crystals and acoustic metamaterials are expected to become an important enabling technology for science and industry. …”
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Performing mathematical operations using high-index acoustic metamaterials by Farzad Zangeneh-Nejad, Romain Fleury

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A Novel Approach to Density Near-Zero Acoustic Metamaterials by Milan Sečujski, Norbert Cselyuszka, Vesna Crnojević-Bengin

“…The study demonstrates the possibility of achieving near-zero propagation of sound waves in acoustic metamaterials based on a membrane-based metamaterial unit cell which exhibits effective mass density of Lorentzian type. …”
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Theoretical Optimization of Trapped-Bubble-Based Acoustic Metamaterial Performance by Dmitry Gritsenko, Roberto Paoli

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Transcranial Acoustic Metamaterial Parameters Inverse Designed by Neural Networks by Yuming Yang, Dong Jiang, Qiongwen Zhang, Xiaoxia Le, Tao Chen, Huilong Duan, Yinfei Zheng

“…Impact Statement: Our study provides insights into inverse design methods and opens the route to guide the preparation of transcranial acoustic metamaterials. Introduction: The development of acoustic metamaterials has enabled the exploration of cranial ultrasound, and it has been found that the influence of the skull distortion layer on acoustic waves can be effectively eliminated by adjusting the parameters of the acoustic metamaterial. …”
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Time-domain imaging of gigahertz surface waves on an acoustic metamaterial by Paul H Otsuka, Sylvain Mezil, Osamu Matsuda, Motonobu Tomoda, Alexei A Maznev, Tian Gan, Nicholas Fang, Nicholas Boechler, Vitalyi E Gusev, Oliver B Wright

“…We extend time-domain imaging in acoustic metamaterials to gigahertz frequencies. Using a sample consisting of a regular array of ∼1 μ m diameter silica microspheres forming a two-dimensional triangular lattice on a substrate, we implement an ultrafast technique to probe surface acoustic wave propagation inside the metamaterial area and incident on the metamaterial from a region containing no microspheres, which reveals the acoustic metamaterial dispersion, the presence of band gaps and the acoustic transmission properties of the interface. …”
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Efficient Modelling of Acoustic Metamaterials for the Performance Enhancement of an Automotive Silencer by Daniel Deery, Lara Flanagan, Gordon O’Brien, Henry J. Rice, John Kennedy

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Integration of Acoustic Metamaterials Made of Plastic to Improve Building Acoustics by Naimušin Andrej, Januševičius Tomas

“…Two types of plastic, PLA and recycled PET-G, were used in acoustic metamaterial 3D printing process. For sound insulation, combined resonator systems were used to control symmetrical wall sound resonance. …”
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Review on the applied research of mechanical and acoustic metamaterials in ship engineering by Liming ZHANG, Deqing YANG

“…Starting with applied research, this paper summarizes the theoretical and application research status of metamaterials in ship engineering over the past ten years, focusing on such aspects of mechanical metamaterials and acoustic metamaterials (AMMs）as their lightweight, vibration and noise reduction, and anti-blast and anti-shock properties, as well as research progress on design methods and applications. …”
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Optimization design of the acoustic metamaterial based on the co-simulation method by Bingfei Liu, Fuxing Chen

“…Due to the application of the algorithms in ISIGHT, different design requirements can be met, such as designing the bandgap frequency of the acoustic metamaterial in a specific range, reducing the frequency of the bandgap, and improving the overall performance of the STL (sound transmission loss) without manual tuning. …”
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Negative refraction imaging of acoustic metamaterial lens in the supersonic range by Jianning Han, Tingdun Wen, Peng Yang, Lu Zhang

“…Acoustic metamaterials with negative refraction index is the most promising method to overcome the diffraction limit of acoustic imaging to achieve ultrahigh resolution. …”
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Ultra-low and ultra-broad-band nonlinear acoustic metamaterials by Xin Fang, Jihong Wen, Bernard Bonello, Jianfei Yin, Dianlong Yu

“…Linear acoustic metamaterials based on resonances are generally tunable but limited by their narrow bands. …”
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Research on the Sound Insulation Properties of Membrane-type Acoustic Metamaterials by Hao Jinyu, Guo Sheng, Cheng Jian, Hu Zhaopin, Cui Hongyu

“…A novel membrane-type acoustic metamaterial is proposed in this paper with light weight and good sound insulation performance at low frequencies. …”
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Numerical Study of a near-Zero-Index Acoustic Metamaterial by Jing, Yun, Xu, Jun, Fang, Xuanlai

“…This Letter studies a two-dimensional, membrane-based acoustic metamaterial with a near-zero refractive index. …”
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Time-domain imaging of gigahertz surface waves on an acoustic metamaterial by Otsuka, Paul H, Mezil, Sylvain, Matsuda, Osamu, Tomoda, Motonobu, Boechler, Nicholas, Gusev, Vitalyi E, Wright, Oliver B, Maznev, Alexei, Gan, Tian, Fang, Xuanlai

“…We extend time-domain imaging in acoustic metamaterials to gigahertz frequencies. Using a sample consisting of a regular array of ~1 μm diameter silica microspheres forming a two-dimensional triangular lattice on a substrate, we implement an ultrafast technique to probe surface acoustic wave propagation inside the metamaterial area and incident on the metamaterial from a region containing no microspheres, which reveals the acoustic metamaterial dispersion, the presence of band gaps and the acoustic transmission properties of the interface. …”
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