Hydrodynamic piezoelectric energy harvesting with topological strong vortex by forced separation

Shi, Guangwei; Tan, Ting; Hu, Shen; Yan, Zhimiao

doi:10.1016/j.ijmecsci.2022.107261

Cited by 22 publications

(3 citation statements)

References 37 publications

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“…A stochastic resonance due to stochastic loading/excitation (Gong et al, 2023; Zhang et al, 2022a). Frequency conversion techniques consist of a primary system (frequency converter) that will affect the frequency up or down of the secondary system by using a coupling mechanism (geared, tapping, magnetic and topological contact) (Rizal et al, 2022; Shi et al, 2022). The self-tuning mechanisms use proof mass and spring varying the mass or/and stiffness of the system (Yu et al, 2020; Zhao et al, 2019).…”

Section: Reviewmentioning

confidence: 99%

Recent advancements in piezoelectric energy harvesting for implantable medical devices

Upendra,

Panigrahi,

Singh

et al. 2023

Journal of Intelligent Material Systems and Structures

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Biomedical implantable devices like deep brain stimulators, implantable cardioverter-defibrillators and cardiac pacemakers are essential for treating the human heart and brain-related diseases. In the past few decades, a considerable amount of research has focused on improving bio-implant technologies. Conventional bio implant devices consist of an external generator like a battery to power the system, which requires replacement after a particular time. Therefore, in recent years, self-powered implants with various energy harvesting techniques have been proposed to avoid frequent surgery for battery replacement and to miniaturise the implant systems. However, the research communities have yet to explore all the limitations and possibilities of improvement on such energy-scavenging technologies, especially when the application is in vivo. Several aspects of recent developments in energy harvesting technologies feasible for biomedical implantable devices are reported systematically. A detailed review of piezoelectric energy harvester mechanism and miniaturisation, electric output and power management and biocompatibility of an energy harvester for implantable medical devices in vitro and in vivo environments. Furthermore, the piezoelectric energy harvester’s durability, packaging material, connection and evaluation criteria are discussed.

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Section: Reviewmentioning

confidence: 99%

Recent advancements in piezoelectric energy harvesting for implantable medical devices

Upendra,

Panigrahi,

Singh

et al. 2023

Journal of Intelligent Material Systems and Structures

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“…Salazar et al [12] researched the effects of the structural damping and motion type on the dynamic performance of a piezoelectric bionic fishtail. Shi et al [13] developed a bionic fishtail harvester driven by the macro fiber composites, and established a numerical model for the harvester by the Galerkin method. Lou et al [14,15] designed a piezoelectric bionic fishtail underwater thruster using the macro fiber composites.…”

Section: Introductionmentioning

confidence: 99%

Numerical analysis of functionally graded piezoelectric bionic fishtail based on Hermite element-free method

Ma,

Zhou,

et al. 2024

Funct. Compos. Struct.

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Piezoelectric bionic fishtails have good flexibility, response speed, anti-interference ability, and have great application prospects in ocean exploration. However, the inherent drawbacks of the mechanical properties of traditional homogeneous piezoelectric materials significantly affect the propulsion performance and reliability of the piezoelectric bionic fishtails. To fill this gap, this paper develops a functionally graded piezoelectric bionic fishtail (FGPBF) by imitating the tail characteristics of groupers. The geometric structure and working principle of the FGPBF are introduced in detail. Based on the first-order shear deformation theory and Hermite element-free method, an element-free model for the FGPBF is established. The effects of gradient factor, substrate material, substrate thickness and electrical load on the propulsion performance of the FGPBF are addressed. The results show that the current results are in good agreement with the finite element results. The deformation of the FGPBF is negatively correlated with the thickness and stiffness of the substrate and linearly positively correlated with the electrical load. As the gradient factor increases, the deflection of the FGPBF first increases and then decreases. When the gradient factor is 2, the potential is 200 V, the dimensionless aluminum substrate thickness is 1, the propulsion performance of the FGPBF is improved by 28% compared to the homogeneous piezoelectric bionic fishtail.

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“…In this regard, the conversion of vibration energy in the environment into electrical energy has gradually emerged as a hot research topic (Gong et al, 2020; Zhang et al, 2022a). Converting the vibration energy in the environment into electrical energy can be divided into piezoelectric (Fang et al, 2023b; Lu et al, 2020; Shan et al, 2019a; Shi et al, 2022; Wang et al, 2022), electromagnetic (Geisler et al, 2017; Li et al, 2021c; Miao et al, 2022), and electrostatic (Guo et al, 2020; Lu et al, 2022a, 2022b; Takhedmit et al, 2017) according to the energy conversion method. The electromagnetic energy harvester has a simple structure and a large output current value.…”

Section: Introductionmentioning

confidence: 99%

Experimental analysis of nonlinear piezo-electromagnetic composite human energy harvester

Zhao,

Liu,

Zhang

et al. 2023

Journal of Intelligent Material Systems and Structures

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To better harvest the kinetic energy of the human and broaden the energy harvest frequency band, a nonlinear piezo-electromagnetic composite human energy harvester (NPE-HEH) is proposed. A magnetic repulsion force between the two groups of magnets makes the energy harvester nonlinear. The excitation experiment and the actual experiment of the human are carried out for the harvester. The excitation experiment results show that there is an optimal resistance value of the harvester to maximize the output power value. When the excitation acceleration is 0.4 g and the excitation frequency is 9 Hz, the output voltage value and the output power of the electromagnetic part of the energy harvester are 0.86 V and 2.47 mW respectively, and the output performance is excellent. When the energy harvester is installed in a backpack with a moving speed of 9 km/h, it can generate 0.7 mW of power. When the energy harvester is placed on the leg, the output performance is good and the output power can reach 1.3 mW. The energy harvester can efficiently harvest energy at low frequencies. This harvester is efficient at low frequencies, compact in size, and easy to carry, making it highly suitable for human vibration energy harvesting applications.

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Hydrodynamic piezoelectric energy harvesting with topological strong vortex by forced separation

Cited by 22 publications

References 37 publications

Recent advancements in piezoelectric energy harvesting for implantable medical devices

Recent advancements in piezoelectric energy harvesting for implantable medical devices

Numerical analysis of functionally graded piezoelectric bionic fishtail based on Hermite element-free method

Experimental analysis of nonlinear piezo-electromagnetic composite human energy harvester

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