Acoustic energy harvesting by piezoelectric curved beams in the cavity of a sonic crystal

Wang, Wei Chung; Wu, Liang; Chen, Lien-Wen; Liu, Chia Ming

doi:10.1088/0964-1726/19/4/045016

Cited by 95 publications

(59 citation statements)

References 27 publications

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“…Acoustic energy is another potential source for power generation. The increasing research studies about acoustic energy harvesting have been reported [12][13][14][15][16][17][18]. The Helmholtz resonator is widely used in the acoustic energy harvester systems since it can largely amplify the acoustic pressure in its cavity [12][13][14][15].…”

Section: Introductionmentioning

confidence: 99%

“…The amplified cavity pressure drives the vibration of the piezoelectric plate mounted on the back plate or in the cavity of Helmholtz resonator, the electric energy is thus induced by the piezoelectric effect. On the other hand, the sonic crystal configuration has also been exploited in acoustic energy harvesting [16][17][18]. Owing to the acoustic wave localization effect inside the sonic crystal cavity, the cavity pressure is greatly magnified to deform the piezoelectric material.…”

Section: Introductionmentioning

confidence: 99%

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Tunable acoustic energy harvester using Helmholtz resonator and dual piezoelectric cantilever beams

Yang

Wen

et al. 2014

2014 IEEE International Ultrasonics Symposium

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A tunable acoustic energy harvester consisting of dual piezoelectric cantilever beams and a Helmholtz resonator with a perforated backplate is proposed. The tunability of the operation frequency band can be achieved not only via simply adjusting the radius (r) of the aperture due to the strong dependence of resonance frequencies of the Helmholtz resonator on the acoustic impedance affected by r, but also by changing the distance (d) between piezoelectric cantilever beams because of their magnetic force interaction. Experimental results show that as r (or d) increases from 0 (or 1.4) to 1.0 (or 3.4) cm, the frequency band is broadened and varies from 175.5~198 (or 175.5~213) Hz to 170.5~221 (or 161~203) Hz. The average ratio of the adjusted frequency bandwidth to r (or d) can reach 28 (or 2.25) Hz/cm over the range of 125~250 Hz.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Tunable acoustic energy harvester using Helmholtz resonator and dual piezoelectric cantilever beams

Yang

Wen

et al. 2014

2014 IEEE International Ultrasonics Symposium

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“…Yet, little effort has been given to exploit the energy of traveling waves in fluids and structures. Only a few research groups have studied this area with a focus on polarization-patterned piezoelectric solids [17], quarter-wavelength resonators [18], Helmholtz resonators [19][20] and phononic crystals [21][22][23][24]. In addition, Yang et al [25] combined the sonic crystal concept with the Helmholtz resonators to enhance the acoustic energy harvesting.…”

Section: Introductionmentioning

confidence: 99%

Modeling and enhancement of piezoelectric power extraction from one-dimensional bending waves

2014

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Vibration-based energy harvesting has been heavily researched over the last decade to enable self-powered small electronic components for wireless applications in various disciplines ranging from biomedical to civil engineering. The existing research efforts in this interdisciplinary field have mostly focused on the harvesting of deterministic or stochastic vibrational energy available at a fixed position in space. Such an approach is convenient to design and employ linear and nonlinear vibration-based energy harvesters, such as base-excited cantilevers with piezoelectric laminates. However, persistent vibrations at a fixed frequency and spatial point, or standing wave patterns, are rather simplified representations of ambient vibrational energy. As an alternative to energy harvesting from spatially localized vibrations and standing wave patterns, this work presents an investigation into the harvesting of one-dimensional bending waves in infinite beams. The focus is placed on the use of piezoelectric patches bonded to a thin and long beam and employed to transform the incoming wave energy into usable electricity while minimizing the traveling waves reflected and transmitted from the harvester domain. To this end, performance enhancement by wavelength matching, resistiveinductive circuits, and a localized obstacle are explored. Electroelastic model predictions and performance enhancement efforts are validated experimentally for various case studies.

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“…Printed batteries can be incorporated into the system, but have limited capacity in thin form factors, necessitating eventual replacement or recharging. To overcome this issue, energy harvesting approaches can be used, including using energy provided by thermal [14], [15], optical [16], mechanical [17], acoustic [18] or radiofrequency (RF) [19] sources. RF energy harvested from a dedicated source is of particular interest as it allows for a simplified system that can function in a wide range of environments, and can be addressed using readily available readout devices.…”

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confidence: 99%

Digital Fabrication and Integration of a Flexible Wireless Sensing Device

et al. 2017

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Abstract-In this paper, we combine high functionality c-Si CMOS and digitally printed components and interconnects to create an mostly printed integrated electronic system on a flexible substrate that can read and process multiple discrete sensors. Our approach is to create an integrated platform for the fabrication of mechanically flexible sensor tags that can be powered and interrogated wirelessly, precluding the need of a separate on-board power source. The high level system design is aimed at minimizing the number of non-printed components and reducing power consumption to enable energy harvesting from the RF field. Digital fabrication of these systems requires a range of materials, feature sizes, and electrical characteristics. In order to integrate the various printed components on a single substrate, we developed an integrated printer to accommodate a range of inks for printing the antenna, different types of sensors, chip interconnects, and wiring. For chip attachment to the flexible substrate, a method of integrating the die within the thickness of the substrate was developed. With proper system design and fabrication, a complete integrated tag for wireless sensing of temperature, strain, and touch was demonstrated. Our approach facilitates customization to a wide variety of sensors and user interfaces suitable for a broad range of applications including remote monitoring of health, structures, and the environment.

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Acoustic energy harvesting by piezoelectric curved beams in the cavity of a sonic crystal

Cited by 95 publications

References 27 publications

Tunable acoustic energy harvester using Helmholtz resonator and dual piezoelectric cantilever beams

Tunable acoustic energy harvester using Helmholtz resonator and dual piezoelectric cantilever beams

Modeling and enhancement of piezoelectric power extraction from one-dimensional bending waves

Digital Fabrication and Integration of a Flexible Wireless Sensing Device

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