Finite-element modeling of piezoelectric energy harvesters using lead-based and lead-free materials for voltage generation

Asthana, Prateek; Khanna, Gargi

doi:10.1080/21870764.2018.1542968

Cited by 10 publications

(2 citation statements)

References 24 publications

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“…Aspect ratio is the structure thickness ratio, and the finger spacing distance. Energy harvesting methodologies may be utilised to provide the power requirements for the proposed device [26][27][28][29].…”

Section: Resultsmentioning

confidence: 99%

Variation of Sensitivity of a MEMS Capacitive Accelerometer Based Microphone with Suspension System Topology

Dwivedi¹,

Asthana²,

Khanna³

et al. 2021

Hearing Loss - From Multidisciplinary Teamwork to Public Health

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The present research seeks to improve a highly sensitive MEMS capacitive accelerometer as a probable completely implantable hearing aid microphone. The research analyses the effect of different suspension system topologies on accelerometer efficiency. The topology of folded beam suspension is considered to be the most suitable for the proposed system. The design factors such as weight, height and resonant frequency are considered to make the accelerometer an effective biomedical system which can be completely implanted with COMSOL MULTIPHYSICS 4.2 the optimized system is simulated and validated. The accelerometer occupies 1mm2 of sensing area and achieves a nominal capacitance of 5.30 pF and an optimized capacitive sensitivity of 6.89fF.

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Section: Resultsmentioning

confidence: 99%

Variation of Sensitivity of a MEMS Capacitive Accelerometer Based Microphone with Suspension System Topology

Dwivedi¹,

Asthana²,

Khanna³

et al. 2021

Hearing Loss - From Multidisciplinary Teamwork to Public Health

Self Cite

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show abstract

“…Modifications to cantilever by slotting its length have been carried out showing that basic cantilever has the best performance [6,7]. A broadband piezoelectric energy harvester able to capture ambient vibrations has been designed based on a seesaw cantilever structure [8,9].…”

Section: Device Designmentioning

confidence: 99%

Development of Vibration Piezoelectric Harvesters by the Optimum Design of Cantilever Structures

Asthana¹,

Khanna²

2020

Nanogenerators

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Piezoelectric energy harvesting is a way of converting waste mechanical energy into usable electrical form. The selection of mechanical devices for conversion of mechanical to electrical energy is a significant part of vibration energy harvesting. The articles provide designing and optimization of a cantilever piezoelectric energy harvester. At first, is the selection of best mechanical device for energy harvesting application. A cantilever without proof mass is then analyzed for the selection of substrate, and piezoelectric material also plays a key role in the performance of the device. Aluminum is selected as a substrate, while zinc oxide acts as the piezoelectric layer. Addition of proof mass reduces the resonant frequency of the device to about 51 Hz as compared to 900 Hz for an aluminum cantilever beam. An electromechanical study shows an active conversion of mechanical input energy to electrical output energy. Power frequency response functions of the resultant structure are able to generate 0.47 mW power having 6.8 μA current at 1 g input acceleration.

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Introduction and Literature Review

Mokhtari

2022

Springer Theses

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Finite-element modeling of piezoelectric energy harvesters using lead-based and lead-free materials for voltage generation

Abstract: To cite this article: Prateek Asthana & Gargi Khanna (2018) Finite-element modeling of piezoelectric energy harvesters using lead-based and lead-free materials for voltage generation,

Cited by 10 publications

References 24 publications

Variation of Sensitivity of a MEMS Capacitive Accelerometer Based Microphone with Suspension System Topology

Variation of Sensitivity of a MEMS Capacitive Accelerometer Based Microphone with Suspension System Topology

Development of Vibration Piezoelectric Harvesters by the Optimum Design of Cantilever Structures

Introduction and Literature Review

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