Defected meta-lattice structures for the enhanced localized vibrational energy harvesting

Hosseinkhani, Ali; Ebrahimian, Fariba; Younesian, Davood; Moayedizadeh, Armin

doi:10.1016/j.nanoen.2022.107488

Cited by 22 publications

(5 citation statements)

References 61 publications

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“…To facilitate this investigation, the widely recognized software Comsol Multiphysics 6.1 is employed. Comsol Multiphysics is extensively utilized for predictive analysis in elastic wave propagation systems [52,53] and configurations incorporating intelligent materials [54,55]. The key configuration parameters utilized within the software are as follows: the analyses are conducted within a two-dimensional spatial domain under the plane-stress condition.…”

Section: Conflicts Of Interestmentioning

confidence: 99%

Defect-Band Splitting of a One-Dimensional Phononic Crystal with Double Defects for Bending-Wave Excitation

Jo,

Lee,

Youn

2023

Mathematics

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Extensive prior research has delved into the localization of elastic wave energy through defect modes within phononic crystals (PnCs). The amalgamation of defective PnCs with piezoelectric materials has opened new avenues for conceptual innovations catering to energy harvesters, wave filters, and ultrasonic receivers. A recent departure from this conventional paradigm involves designing an ultrasonic actuator that excites elastic waves. However, previous efforts have mostly focused on single-defect scenarios for bending-wave excitation. To push the boundaries, this research takes a step forward by extending PnC design to include double piezoelectric defects. This advancement allows ultrasonic actuators to effectively operate across multiple frequencies. An analytical model originally developed for a single-defect situation via Euler–Bernoulli beam theory is adapted to fit within the framework of a double-defect set-up, predicting wave-excitation performance. Furthermore, a comprehensive study is executed to analyze how changes in input voltage configurations impact the output responses. The ultimate goal is to create ultrasonic transducers that could have practical applications in nondestructive testing for monitoring structural health and in ultrasonic imaging for medical purposes.

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Section: Conflicts Of Interestmentioning

confidence: 99%

Defect-Band Splitting of a One-Dimensional Phononic Crystal with Double Defects for Bending-Wave Excitation

Jo,

Lee,

Youn

2023

Mathematics

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“…To date, energy-harvesting mechanisms using various energy sources, such as photoelectric, , piezoelectric, , thermal, , frictional, , pyroelectric, , vibrational, , EM, ,, and radio frequency energy , have been explored for harvesting and reutilizing waste energy to generate electricity. Among these, EM energy harvesting is a promising mechanism, owing to its sustainability and growing demand.…”

Section: Introductionmentioning

confidence: 99%

Soft and Stretchable Electromagnetic Energy-Harvesting Devices with Topographically Wrinkled Liquid-Metal Electrodes

Bae,

Wei,

Bhuyan

et al. 2024

ACS Appl. Polym. Mater.

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Electromagnetic (EM) energy harvesting is a promising mechanism because of its eco-friendliness and sustainability. Most electronic appliances undergo EM energy dissipation as dielectric losses from adjacent dielectrics (casting, coating, and supports) during operation. Previously, liquid-metalpatterned elastomeric devices have been utilized to harvest EM energy. Attaching devices to electronic appliances can effectively scavenge wasted EM energy and convert it into useful electrical energy. In this work, we also utilized liquid-metal-electrodepatterned silicone substrates to harvest the EM energy dissipated from electronic appliances; however, the electrodes used here have topographically wrinkled geometries formed on macroscopically large areas, resulting in improved performance. Liquid-metal electrodes were homogeneously spray-coated on a topographically wrinkled silicone substrate prepared by utilizing the interfacial instability between the mechanically heterogeneous silicone elastomer bilayer. These wrinkled electrodes demonstrate improved energy-harvesting performance owing to the larger surface area, and the densities of electric charges focused on topographic wrinkles increased as a function of the aspect ratio of the wrinkles. The practical usability of energy harvested using a liquid-metal energyharvesting device (LEHD) is ultimately demonstrated by powering small external devices. The LEHD developed in this study can be implemented in wearable energy storage devices, artificial skins, and soft robotics by integration into soft and stretchable electronics.

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“…There are two main streams of research: (a) the enhancement of output electrical responses (e.g. current, voltage, and electric power) that are generated by piezoelectric effects [32][33][34]; and (b) the achievement of a high Q-factor in frequency responses of elastic-wave energy transmitted through a PnC [35][36][37]. These topics commonly assume the circumstance where elastic waves are incident toward the PnC.…”

Section: Introductionmentioning

confidence: 99%

Double piezoelectric defects in phononic crystals for ultrasonic transducers

Jo¹,

Lee²,

Yoon³

et al. 2023

J. Phys. D: Appl. Phys.

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Significant prior research has explored elastic wave-energy localization via a defect mode of a phononic crystal (PnC). The integration of defect-introduced PnCs and piezoelectric materials has paved the path for the development of new conceptual products for applications in energy harvesters, wave filters, and ultrasonic sensors. Recently, an attempt has been made to deviate from this paradigm and design an ultrasonic transducer that generates elastic waves. Unfortunately, the previous works have been limited to a single-defect situation. Therefore, as an advanced approach, this work aims to expand the PnC design space into double defects, which will make the ultrasonic transducer useful at several frequencies. As a first step, this study targets longitudinal wave generation. To predict the wave-generation performance, a previous analytical model that was built for energy-harvesting purposes under a single-defect situation is modified to be suitable for the present wave-generation purpose under a double-defect situation. Moreover, two parametric studies are executed to analyze how the output responses change based on changes to the input voltage setting and the spacing between the double defects. We hope that these ultrasonic transducers can be potentially applicable for nondestructive testing in structural health monitoring and ultrasonic imaging in medical science.

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Defected meta-lattice structures for the enhanced localized vibrational energy harvesting

Cited by 22 publications

References 61 publications

Defect-Band Splitting of a One-Dimensional Phononic Crystal with Double Defects for Bending-Wave Excitation

Defect-Band Splitting of a One-Dimensional Phononic Crystal with Double Defects for Bending-Wave Excitation

Soft and Stretchable Electromagnetic Energy-Harvesting Devices with Topographically Wrinkled Liquid-Metal Electrodes

Double piezoelectric defects in phononic crystals for ultrasonic transducers

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