Harvesting acoustic energy by coherence resonance of a bi-stable piezoelectric harvester

Zhou, Zhiyong; Zhu, Peizhi

doi:10.1016/j.energy.2017.03.062

Cited by 69 publications

(22 citation statements)

References 45 publications

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“…The achieved power output was 60.2 mW/m 2 and the maximal current density was 1.6 mA/m 2 . To scavenge noise energy a bistable acoustic energy harvester was reported by the Qin group [86]. Fabrication of harvester was based on a piezoelectric cantilever beam with a flat plate.…”

Section: Sound Energy Harvestingmentioning

confidence: 99%

Energy Harvesting towards Self-Powered IoT Devices

et al. 2020

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The internet of things (IoT) manages a large infrastructure of web-enabled smart devices, small devices that use embedded systems, such as processors, sensors, and communication hardware to collect, send, and elaborate on data acquired from their environment. Thus, from a practical point of view, such devices are composed of power-efficient storage, scalable, and lightweight nodes needing power and batteries to operate. From the above reason, it appears clear that energy harvesting plays an important role in increasing the efficiency and lifetime of IoT devices. Moreover, from acquiring energy by the surrounding operational environment, energy harvesting is important to make the IoT device network more sustainable from the environmental point of view. Different state-of-the-art energy harvesters based on mechanical, aeroelastic, wind, solar, radiofrequency, and pyroelectric mechanisms are discussed in this review article. To reduce the power consumption of the batteries, a vital role is played by power management integrated circuits (PMICs), which help to enhance the system’s life span. Moreover, PMICs from different manufacturers that provide power management to IoT devices have been discussed in this paper. Furthermore, the energy harvesting networks can expose themselves to prominent security issues putting the secrecy of the system to risk. These possible attacks are also discussed in this review article.

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Section: Sound Energy Harvestingmentioning

confidence: 99%

Energy Harvesting towards Self-Powered IoT Devices

et al. 2020

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“…Energy harvesting from sound is a relatively new technology [31,[111][112][113][114][115][116][117][118]. Acoustic noise is one of the most common pollution sources in cities, therefore it can be used as a source of energy to power electric devices with low consumption.…”

Section: Acoustic Noise Harvester's Technology and Devicesmentioning

confidence: 99%

Energy Harvesting Technologies and Equivalent Electronic Structural Models—Review

et al. 2019

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As worldwide awareness about global climate change spreads, green electronics are becoming increasingly popular as an alternative to diminish pollution. Thus, nowadays energy efficiency is a paramount characteristic in electronics systems to obtain such a goal. Harvesting wasted energy from human activities and world physical phenomena is an alternative to deal with the aforementioned problem. Energy harvesters constitute a feasible solution to harvesting part of the energy being spared. The present research work provides the tools for characterizing, designing and implementing such devices in electronic systems through their equivalent structural models.

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“…Thus, other than producing inhomogeneous, complex deformation of free standing MAE samples, itʼs also desirable to render materials with the ability of responding or deforming diversely in time. In previous works, a most famous and straightforward way to diversify the temporal responses of a system is to introduce nonlinear dynamics (Qian et al 2019, Kim and Seok 2014, Zhou and Zuo 2018, Zhou et al 2017. But, it often requires a complex structural design and usually works for certain frequencies.…”

Section: Introductionmentioning

confidence: 99%

Diversifying temporal responses of magnetoactive elastomers

Tan

Wen

Gong

et al. 2020

Mater. Res. Express

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Magnetoactive elastomers(MAEs) are able to deform significantly in response to the application of magnetic fields. Usually, a magnetic field which is harmonic in time usually results in a harmonic mechanical response of the MAEs. To render MAEs with the ability of responding or deforming diversely or anharmonically in time, in this work, we propose a hybrid MAE which is based on a rubber matrix embedded with both soft iron particles and hard NdFeB-alloy particles. Firstly, based on the principle of minimum free energy, we establish a theoretical model to study magnetomechanical behaviors of the proposed hybrid MAEs. Then, through both theoretical and experimental studies, we show that the response of a hybrid MAE sample to the applied magnetic field is usually complex, i.e. the deformation induced by a harmonic magnetic field in time is anharmonic. At last, the effect of two main factors, the state of magnetization and the amplitude of the applied magnetic field, is studied both experimentally and theoretically. This work provides a new idea of diversifying the temporal response of MAEs to the application of harmonic magnetic fields (harmonic in time). The hybrid MAEs may serve as a complement to the recently proposed 3D-printed hard MAEs which are able to deform inhomogeneously in space in response to a uniform magnetic field.

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Harvesting acoustic energy by coherence resonance of a bi-stable piezoelectric harvester

Cited by 69 publications

References 45 publications

Energy Harvesting towards Self-Powered IoT Devices

Energy Harvesting towards Self-Powered IoT Devices

Energy Harvesting Technologies and Equivalent Electronic Structural Models—Review

Diversifying temporal responses of magnetoactive elastomers

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