Vibration‐Energy‐Harvesting System: Transduction Mechanisms, Frequency Tuning Techniques, and Biomechanical Applications

Dong, Lin; Closson, Andrew B.; Jin, Congran; Trase, Ian; Chen, Zi; Zhang, John X. J.

doi:10.1002/admt.201900177

Cited by 73 publications

(44 citation statements)

References 213 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Because of this, a lot of research has been conducted on the matter, and many reviews have already been completed. [33][34][35] In this section, we re-categorized the manual resonance-tuning methods into mechanical, magnetic, and piezoelectrical stiffness and geometric change methods and discussed these as preliminary steps to SRT.…”

Section: Manual Resonance-tuning Mechanismmentioning

confidence: 99%

“…[94] Copyright 2019, Elsevier. d) Variations of the d 33 × g 33 values and the open-circuit voltage of the PEHs with respect to the number of BT2 nanorods and e) output power of the PEHs produced by the pure PVDF and the PVDF with 5 vol% BT2 nanorods measured at different external resistances. d,e) Reproduced with permission.…”

Section: (25 Of 34)mentioning

confidence: 99%

“…[100] The output powers of the PEH fabricated by the PVDF with 5 vol% BT2 are larger than those of the PEH produced by pure PVDF because the d 33 × g 33 value of the PVDF with 5 vol% BT2 is larger than that of the pure PVDF. [100] Therefore, the FOM on of the 31-mode type-II PEHs fabricated using the PVDF can be suggested as the d 33 s E values because very few BT2 nanorods were added to the PVDF. Hence, it is considered that the 2 k ij is a FOM on of the 31-mode type-II PEHs, which are produced using polymer materials.…”

Section: (25 Of 34)mentioning

confidence: 99%

See 2 more Smart Citations

Piezoelectric Energy Harvesting Design Principles for Materials and Structures: Material Figure‐of‐Merit and Self‐Resonance Tuning

et al. 2020

View full text Add to dashboard Cite

Piezoelectric energy harvesters (PEHs) aim to generate sufficient power to operate targeting device from the limited ambient energy. PEH includes mechanical-to-mechanical, mechanical-to-electrical, and electrical-to-electrical energy conversions, which are related to PEH structures, materials, and circuits, respectively; these should be efficient for increasing the total power. This critical review focuses on PEH structures and materials associated with the two major energy conversions to improve PEH performance. First, the resonance tuning mechanisms for PEH structures maintaining continuous resonance, regardless of a change in the vibration frequency, are presented. Based on the manual tuning technique, the electrically-and mechanicallydriven self-resonance tuning (SRT) techniques are introduced in detail. The representative SRT harvesters are summarized in terms of tunability, power consumption, and net power. Second, the figure-of-merits of the piezoelectric materials for output power are summarized based on the operating conditions, and optimal piezoelectric materials are suggested. Piezoelectric materials with large k ij , d ij , and g ij values are suitable for most PEHs, whereas those with large k ij and Q m values should be used for on-resonance conditions, wherein the mechanical energy is directly supplied to the piezoelectric material. This comprehensive review provides insights for designing efficient structures and selection of proper piezoelectric materials for PEHs.

show abstract

Section: Manual Resonance-tuning Mechanismmentioning

confidence: 99%

Section: (25 Of 34)mentioning

confidence: 99%

Section: (25 Of 34)mentioning

confidence: 99%

See 1 more Smart Citation

Piezoelectric Energy Harvesting Design Principles for Materials and Structures: Material Figure‐of‐Merit and Self‐Resonance Tuning

et al. 2020

View full text Add to dashboard Cite

show abstract

“…Presently, many kinds of equipment designed to collect body energy have been reported . This study is divided into electromagnetic generator, friction generator, and composite generator.…”

Section: Introductionmentioning

confidence: 99%

Bioinspired Helical Triboelectric Nanogenerators for Energy Conversion of Motion

et al. 2020

Adv Materials Technologies

View full text Add to dashboard Cite

lithium-ion batteries, such as low life, serious pollution, and low safety, have always plagued the development of intelligent wearable devices and intelligent devices. If the energy module of smart wearable devices explodes, the apparent harm is conceivable. [10][11][12] Therefore, the development of a safe and lightweight energy source is urgently necessary. Given the rapid development of the integrated circuits (IC) and low power sensors, the power requirement of smart wearable electronic devices has been reduced from mW to µW. [13][14][15] To solve this problem, it is feasible and effective to collect body movement energy and convert it into electric energy to supply power for smart wearable devices. [16,17] Presently, many kinds of equipment designed to collect body energy have been reported. [18][19][20][21] This study is divided into electromagnetic generator, friction generator, and composite generator. The friction generator provides energy for external electrical appliances under the principle of friction charge effect and electrostatic balance effect, where the relative position change of different electronegative materials will produce the change of electric potential. [22] The electromagnetic generator generates power through the induction of current by the change of magnetic field in closed coil. The composite generator is an effective combination of these two kinds of generator. The friction nanogenerator is obviously more suitable to supply power for intelligent wearable equipment because of its safety and lightweight compared with magnetoelectricity and composite generator. The main direction of this research is to improve the output performance of the proposed nanogenerator. This can be achieved by changing the characteristics of materials through mixing, microprocessing, and other methods. [23][24][25][26] Another method is to improve the collection efficiency of environmental energy by changing the structure of devices.Nature has rich scientific principles such as DNA, which is tightly and steadily aligned with base pairs containing genetic information in the form of helical twists. The combination of the corresponding base pairs can form an effective genetic expression. This allows the arrangement of more genetic information and match more genetic information accurately in a smaller space in the nucleus. It guarantees the richness and security of information. The relative friction layer and electrode Collecting energy from body movements to supply power for equipment is an important method to rapidly develop wearable intelligent equipment. This method places high requirements, such as being lightweight and stable, on a nanogenerator. Herein, a bioinspired helical triboelectric nanogenerator (BH-TENG) that realizes energy acquisition through the intensity and frequency of body movement is designed based on the helical structure of DNA. The helical structure facilitates more contact areas and provides increased stability to complete the power generation process than the simple structure with pl...

show abstract

“…The research on energy harvesters has always been one of the hot topics in the literature, and a large number of researchers have made extensive research in this field. The energy harvester based on vibration has attracted widespread attention because mechanical vibration can make energy in many places where thermal or light energy is not suitable [1]. For example, it can provide power for electromechanical systems and actuators, and can also be applied to environmental monitoring equipment, medical transplantation, and wireless sensors.…”

Section: Introductionmentioning

confidence: 99%

Optimization of Galloping Piezoelectric Energy Harvester with V-Shaped Groove in Low Wind Speed

2019

View full text Add to dashboard Cite

A square cylinder with a V-shaped groove on the windward side in the piezoelectric cantilever flow-induced vibration energy harvester (FIVEH) is presented to improve the output power of the energy harvester and reduce the critical velocity of the system, aiming at the self-powered supply of low energy consumption devices in the natural environment with low wind speed. Seven groups of galloping piezoelectric energy harvesters (GPEHs) were designed and tested in a wind tunnel by gradually changing the angle of two symmetrical sharp angles of the V-groove. The GPEH with a sharp angle of 45° was selected as the optimal energy harvester. Its output power was 61% more than the GPEH without the V-shaped groove. The more accurate mathematical model was made by using the sparse identification method to calculate the empirical parameters of fluid based on the experimental data and the theoretical model. The critical velocity of the galloping system was calculated by analyzing the local Hopf bifurcation of the model. The minimum critical velocity was 2.53 m/s smaller than the maximum critical velocity at 4.69 m/s. These results make the GPEH with a V-shaped groove (GPEH-V) more suitable to harvest wind energy efficiently in a low wind speed environment.

show abstract

Vibration‐Energy‐Harvesting System: Transduction Mechanisms, Frequency Tuning Techniques, and Biomechanical Applications

Cited by 73 publications

References 213 publications

Piezoelectric Energy Harvesting Design Principles for Materials and Structures: Material Figure‐of‐Merit and Self‐Resonance Tuning

Piezoelectric Energy Harvesting Design Principles for Materials and Structures: Material Figure‐of‐Merit and Self‐Resonance Tuning

Bioinspired Helical Triboelectric Nanogenerators for Energy Conversion of Motion

Optimization of Galloping Piezoelectric Energy Harvester with V-Shaped Groove in Low Wind Speed

Contact Info

Product

Resources

About