Tunability of band gaps and energy harvesting based on the point defect in a magneto-elastic acoustic metamaterial plate

Deng, Tian; Zhang, Shunzu; Gao, Yuanwen

doi:10.7567/1882-0786/ab5836

Cited by 17 publications

(7 citation statements)

References 32 publications

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“…[123] If the cylindrical unit cell is processed with magnetostrictive material, the energy band structure of the defect mode metamaterial can be adjusted more conveniently according to the application requirements by changing the external magnetic field. [207] In Figure 9F, Jo et al [202] proved that two coupled defect bands can localize the elastic wave energy, thus leading to enhanced output electric power and widening the frequency bandwidth for energy harvesting. In addition, multiple cavity modes based on elastic metamaterials were designed for achieving multiple frequencies and wide bandwidth energy harvesting.…”

Section: Local Resonance Metamaterialsmentioning

confidence: 99%

Mechanical Intelligent Energy Harvesting: From Methodology to Applications

Zhao

Zou

Wei

et al. 2023

Advanced Energy Materials

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The Artificial Intelligence of Things (AIoT) connects everything with intelligence, while the increase in energy consumption generated by numerous electronic devices puts forward an impending demand on the power supply. Energy harvesting technology has emerged as a compelling innovation technology for the net zero emissions of the power supply for the AIoT. Although significant advances have been witnessed in energy harvesting, some issues such as poor electrical output, weak environmental adaptability, and low reliability are difficult to satisfactorily resolve. Mechanical intelligent energy harvesting can be defined as the system identifying the external excitation or its own state and reacting to it, rather than relying on electrical sensing elements or a central controller for certain adaptive or programmed functions. The adaptive and programmed functions exhibit great potential in solving the above‐mentioned issues that seriously restrict the development of the energy harvesting technology. Here, a generalized definition of mechanical intelligent energy harvesting is given critically and the design methodology is elaborated. The typical reported energy harvesting systems with the characteristics of mechanical intelligence are reviewed. The key research directions in mechanical intelligent energy harvesting are discussed. The mechanical intelligence is expected to revolutionize the development of the energy‐harvesting technology and pave the way for applications.

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Section: Local Resonance Metamaterialsmentioning

confidence: 99%

Mechanical Intelligent Energy Harvesting: From Methodology to Applications

Zhao

Zou

Wei

et al. 2023

Advanced Energy Materials

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“…The first approach, confinement, can be achieved by introducing a sub-wavelength defect into a two-dimensional lattice structure of meta-atoms [188,[198][199][200][201]. As shown in Figures 10(a) and 10(b), when an incident acoustic wave hits the AM, the sound energy can be confined into the sub-wavelength defect.…”

Section: Energy Harvestingmentioning

confidence: 99%

Recent progress in acoustic metamaterials and active piezoelectric acoustic metamaterials - A review

Huber

2022

Applied Materials Today

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“…Deng et al 60 presented a method where, based on the point defect of magneto-elastic acoustic metamaterial and with the effect of the piezoelectric element, the AEH practice is done.…”

Section: Acoustic Metamaterial-based Approachesmentioning

confidence: 99%

Recent acoustic energy harvesting methods and mechanisms: A review

Patil

Mandale²

2021

Noise & Vibration Worldwide

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This review article summarises the mechanism of the acoustic energy harvester or converter which includes the compact structure of the piezoelectric element, electromagnetic transducer and Helmholtz resonator; different shapes of Helmholtz resonators, piezoelectric cantilever, acoustic metamaterial-based approach, electrostatic transduction method, auxetic structure of material and other techniques. The recently established methods of acoustic energy harvesting and converting mechanisms; devices are carefully reviewed, and their results are compared and listed in the table. The technique of energy conversion by using acoustic metamaterial will tend to be more efficacious due to its complexity and the structure. Even in the few noise attenuation applications, more metamaterial is used, where, with the help of the conversion mechanism, the noise or sound energy can be converted into electrical energy for small electronic applications. It is demonstrated that the acoustic energy-conversion technique will become an essential part of the environmental energy harvesting research field.

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Tunability of band gaps and energy harvesting based on the point defect in a magneto-elastic acoustic metamaterial plate

Cited by 17 publications

References 32 publications

Mechanical Intelligent Energy Harvesting: From Methodology to Applications

Mechanical Intelligent Energy Harvesting: From Methodology to Applications

Recent progress in acoustic metamaterials and active piezoelectric acoustic metamaterials - A review

Recent acoustic energy harvesting methods and mechanisms: A review

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