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DOE OSTI · 2563342

Scalable phononic metamaterials: Tunable bandgap design and multi-scale experimental validation

Meier, Timon [University of California, Berkeley, CA (United States)] (ORCID:000900096572680X)·Korakis, Vasileios [University of California, Berkeley, CA (United States)]·Blankenship, Brian W. [University of California, Berkeley, CA (United States)]·Lu, Haotian [University of California, Berkeley, CA (United States)] (ORCID:0000000195942436)·Kyriakou, Eudokia [Foundation for Research & Technology-Hellas, Heraklion (Greece); University of Crete, Heraklion (Greece)]·Papamakarios, Savvas [Foundation for Research & Technology-Hellas, Heraklion (Greece); National and Kapodistrian University of Athens (Greece)] (ORCID:0009000284881193)·Vangelatos, Zacharias [University of California, Berkeley, CA (United States)] (ORCID:0000000195133671)·Yildizdag, M. Erden [Istanbul Technical University (Turkey)] (ORCID:000000033041133X)·Zyla, Gordon [Foundation for Research & Technology-Hellas, Heraklion (Greece)]·Xia, Xiaoxing [Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States)] (ORCID:0000000312553289)·Zheng, Xiaoyu [University of California, Berkeley, CA (United States)]·Rho, Yoonsoo [University of California, Berkeley, CA (United States); Ulsan National Institute of Science and Technology (UNIST), Ulsan (Korea, Republic of)] (ORCID:0000000328705064)·Farsari, Maria [Foundation for Research & Technology-Hellas, Heraklion (Greece)]·Grigoropoulos, Costas P. [University of California, Berkeley, CA (United States)] (ORCID:0000000285054037)
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Abstract

Phononic metamaterials offer unprecedented control over wave propagation, making them essential for applications such as vibration isolation, waveguiding, and acoustic filtering. However, achieving scalable and precisely tunable bandgap properties across different length scales remains challenging. This study presents a user-friendly design framework for phononic metamaterials, enabling ultra-wide bandgap tunability (B/ω c ratios up to 172 %) across multiple frequency ranges and scales. Using finite element simulations of a Yablonovite-inspired unit cell, we establish a comprehensive parametric design space that illustrates how geometric parameters, such as sphere size and beam diameter, controls bandgap width and frequency. The scalability and robustness of the framework are validated through experimental testing on additively manufactured structures at both macro (10 mm) and micro (80 µm) scales, fabricated using Stereolithography and Two-Photon Polymerization. Transmission loss measurements, conducted with piezoelectric transducers and laser vibrometry, closely match simulations in the kHz and MHz frequency ranges, confirming the reliability and consistency of the bandgap behavior across scales. This work bridges theory and experiments at multiple scales, offering a practical methodology for the rapid design of phononic metamaterials and expanding their potential for diverse applications across a broad range of frequencies.

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36 MATERIALS SCIENCE42 ENGINEERINGBand StructureMulti-Scale Experimental ValidationPhononic MetamaterialsTailored Design FrameworkTunable Bandgap DesignTwo-Photon Polymerization

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Meier, Timon [University of California, Berkeley, CA (United States)] (ORCID:000900096572680X), Korakis, Vasileios [University of California, Berkeley, CA (United States)], Blankenship, Brian W. [University of California, Berkeley, CA (United States)], Lu, Haotian [University of California, Berkeley, CA (United States)] (ORCID:0000000195942436), Kyriakou, Eudokia [Foundation for Research & Technology-Hellas, Heraklion (Greece); University of Crete, Heraklion (Greece)], Papamakarios, Savvas [Foundation for Research & Technology-Hellas, Heraklion (Greece); National and Kapodistrian University of Athens (Greece)] (ORCID:0009000284881193), Vangelatos, Zacharias [University of California, Berkeley, CA (United States)] (ORCID:0000000195133671), Yildizdag, M. Erden [Istanbul Technical University (Turkey)] (ORCID:000000033041133X), Zyla, Gordon [Foundation for Research & Technology-Hellas, Heraklion (Greece)], Xia, Xiaoxing [Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States)] (ORCID:0000000312553289), Zheng, Xiaoyu [University of California, Berkeley, CA (United States)], Rho, Yoonsoo [University of California, Berkeley, CA (United States); Ulsan National Institute of Science and Technology (UNIST), Ulsan (Korea, Republic of)] (ORCID:0000000328705064), Farsari, Maria [Foundation for Research & Technology-Hellas, Heraklion (Greece)], Grigoropoulos, Costas P. [University of California, Berkeley, CA (United States)] (ORCID:0000000285054037). 2025-03-02. Scalable phononic metamaterials: Tunable bandgap design and multi-scale experimental validation. https://doi.org/10.1016/j.matdes.2025.113778

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