Progress and perspectives on phononic crystals

Journal of Applied Physics, Journal Year: 2021, Volume and Issue: 129(16)

Published: April 22, 2021

Phononic crystals (PnCs) control the transport of sound and heat similar to electric currents by semiconductors metals or light photonic crystals. Basic applied research on PnCs spans entire phononic spectrum, from seismic waves audible gigahertz phononics for telecommunications thermal in terahertz range. Here, we review progress applications across their offer some perspectives view growing demand vibrational isolation, fast signal processing, miniaturization devices. Current macroscopic low-frequency offers complete solutions design optimization construction characterization, e.g., insulators, shields, ultrasonic imaging Hypersonic made novel low-dimensional nanomaterials can be used develop smaller microelectromechanical systems faster wireless networks. The operational frequency, compactness, efficiency communications also increase using principles optomechanics. In range, efficient removal electronic devices thermoelectrics. Finally, introduction topology condensed matter physics has provided revolutionary designs sub-gigahertz PnCs, which now transferred range with advanced nanofabrication techniques momentum-resolved spectroscopy acoustic phonons.

Language: Английский

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From Photonic Crystals to Seismic Metamaterials: A Review via Phononic Crystals and Acoustic Metamaterials

Archives of Computational Methods in Engineering, Journal Year: 2021, Volume and Issue: 29(2), P. 1137 - 1198

Published: June 15, 2021

Language: Английский

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A mechanical metamaterial with reprogrammable logical functions

Nature Communications, Journal Year: 2021, Volume and Issue: 12(1)

Published: Dec. 13, 2021

Abstract Embedding mechanical logic into soft robotics, microelectromechanical systems (MEMS), and robotic materials can greatly improve their functional capacity. However, such logical functions are usually pre-programmed hardly be altered during in-life service, limiting applications under varying working conditions. Here, we propose a reprogrammable mechanological metamaterial (ReMM). Logical computing is achieved by imposing sequential excitations. The system initialized reprogrammed via selectively releasing the Realization of universal combinatorial (memory) demonstrated experimentally numerically. fabrication scalability also discussed. We expect ReMM serve as platform for constructing reusable multifunctional with strong computation information processing capability.

Language: Английский

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Design of Acoustic/Elastic Phase Gradient Metasurfaces: Principles, Functional Elements, Tunability, and Coding

Applied Mechanics Reviews, Journal Year: 2022, Volume and Issue: 74(2)

Published: March 1, 2022

Abstract Acoustic/elastic metasurfaces as a kind of two-dimensional metamaterials are subwavelength thickness and show remarkable ability acoustic/elastic wave manipulation. They have potential applications in various fields such acoustic imaging, communications, cloaking, camouflage, vibration/noise control, energy harvesting, nondestructive testing. In this review, we mainly summarize recent developments phase gradient metasurfaces, including design principles, functional elements, field manipulation with applications, tunable well the emerging digital coding metasurfaces. At last, outline future research directions field.

Language: Английский

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Tailoring Structure‐Borne Sound through Bandgap Engineering in Phononic Crystals and Metamaterials: A Comprehensive Review

Advanced Functional Materials, Journal Year: 2022, Volume and Issue: 33(2)

Published: Nov. 18, 2022

In solid state physics, a bandgap (BG) refers to range of energies where no electronic states can exist. This concept was extended classical waves, spawning the entire fields photonic and phononic crystals BGs are frequency (or wavelength) intervals wave propagation is prohibited. For elastic found in periodically alternating mechanical properties (i.e., stiffness density). gives birth later metamaterials that have enabled unprecedented functionalities for wide applications. Planar built vibration shielding, while myriad works focus on integrating microsystems filtering, waveguiding, dynamical strain energy confinement optomechanical systems. Furthermore, past decade has witnessed rise topological insulators, which leads creation elastodynamic analogs insulators robust manipulation waves. Meanwhile, additive manufacturing realization 3D architected metamaterials, extends their functionalities. review aims comprehensively delineate rich physical background state-of-the art possess engineered different applications, provide roadmap future directions these manmade materials.

Language: Английский

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Flexural wave attenuation by metamaterial beam with compliant quasi-zero-stiffness resonators

Mechanical Systems and Signal Processing, Journal Year: 2022, Volume and Issue: 174, P. 109119 - 109119

Published: April 12, 2022

Language: Английский

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Hierarchical re-entrant honeycomb metamaterial for energy absorption and vibration insulation

International Journal of Mechanical Sciences, Journal Year: 2023, Volume and Issue: 250, P. 108307 - 108307

Published: March 21, 2023

Language: Английский

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Acoustic focusing and imaging via phononic crystal and acoustic metamaterials

Journal of Applied Physics, Journal Year: 2022, Volume and Issue: 131(1)

Published: Jan. 5, 2022

The effective operation of certain electronic, medical, industrial, and testing equipment relies on high-quality focusing imaging capability, which also plays a vital role in the field wave physics. Therefore, continuously improving resolution capacity is essential. However, homogeneous medium dominated by diffraction limit, best for could only reach half wavelength corresponding to lowest operating frequency, significantly hindering relevant application value. development phononic crystals (PCs) acoustic metamaterials (AMMs) has realized sub-wavelength super-resolution attracted increasing research attention physics, mechanics, engineering, biomedical science. This Tutorial explained basic principles traditional methods imaging. Then, implementation related progress based artificial devices, including but not limited PCs AMMs, were systematically discussed. Moreover, method was introduced realize or sub-diffraction integrating these devices into time-reversal procedure. Finally, potential trends practical prospects presented.

Language: Английский

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Seismic metamaterials: Generating low-frequency bandgaps induced by inertial amplification

International Journal of Mechanical Sciences, Journal Year: 2022, Volume and Issue: 221, P. 107224 - 107224

Published: March 23, 2022

Language: Английский

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Multifunctional 3D lattice metamaterials for vibration mitigation and energy absorption

International Journal of Mechanical Sciences, Journal Year: 2022, Volume and Issue: 233, P. 107678 - 107678

Published: Aug. 20, 2022

Language: Английский

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