A Magneto-Mechano-Electric Generator Based on Lead-Free Single-Crystal Fibers for Robust Scavenging of Ambient Magnetic Energy

Park, Sunghoon; Kumar, Ajeet; Kaarthik, J.; Annapureddy, Venkateswarlu; Ryu, Jungho

doi:10.1007/s13391-020-00215-2

Cited by 24 publications

(21 citation statements)

References 25 publications

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“…The lead-free structure with a magnetic energy harvesting function generated an open-circuit V pp of 11 V and a short-circuit current of 62 μA under a H ac of 10 Oe, presenting a dc power output of 504 μW cm −3 after rectification and powering commercial LEDs without the need for any external power supply. 192 Ryu et al 193 further investigated the size effect of the piezoelectric element on the output power of a cantilever energy harvester. Different cantilever beams with various aspect ratios (L/W of 0.59, 0.78, 1, 1.25, and 1.6) were fabricated by using PMN-PZT SFCs, Ni plates, and NdFeB magnets.…”

Section: Magnetic Energy Harvestingmentioning

confidence: 99%

“…A lead‐free ME energy harvester based on a <011>‐oriented SFC (82BaTiO 3 –10BaZrO 3 –8CaTiO 3 )/Ni composite structure was proposed, and it exhibited good ability and robustness to capture ambient magnetic energy. The lead‐free structure with a magnetic energy harvesting function generated an open‐circuit V pp of 11 V and a short‐circuit current of 62 μA under a H ac of 10 Oe, presenting a dc power output of 504 μW cm −3 after rectification and powering commercial LEDs without the need for any external power supply 192 . Ryu et al 193 further investigated the size effect of the piezoelectric element on the output power of a cantilever energy harvester.…”

Section: Sme Energy Harvestingmentioning

confidence: 99%

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Self‐biased magnetoelectric composite for energy harvesting

et al. 2023

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The wireless sensor network energy supply technology for the Internet of things has progressed substantially, but attempts to provide sustainable and environmentally friendly energy for sensor networks remain limited and considerably cumbersome for practical application. Energy harvesting devices based on the magnetoelectric (ME) coupling effect have promising prospects in the field of self‐powered devices due to their advantages of small size, fast response, and low power consumption. Driven by application requirements, the development of composite with a self‐biased magnetoelectric (SME) coupling effect provides effective strategies for the miniaturized and high‐precision design of energy harvesting devices. This review summarizes the work mechanism, research status, characteristics, and structures of SME composites, with emphasis on the application and development of SME devices for vibration and magnetic energy harvesting. The main challenges and future development directions for the design and implementation of energy harvesting devices based on the SME effect are presented.

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Section: Magnetic Energy Harvestingmentioning

confidence: 99%

Section: Sme Energy Harvestingmentioning

confidence: 99%

Self‐biased magnetoelectric composite for energy harvesting

et al. 2023

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“…Several devices with similar concepts, such as magneto-mechano-electric (MME) generators, [6][7][8] which can convert magnetic fields to electrical energy and power wireless internet of things (IoT) sensors or other low-power consumption electric devices, have been developed. [9][10][11] An MME generator typically Kirigami structured PDMS-ZnS:Cu mechanoluminescence (ML) composite and a MMV cantilever.…”

Section: Introductionmentioning

confidence: 99%

Magnetically Driven Powerless Lighting Device with Kirigami Structured Magneto–Mechanoluminescence Composite

et al. 2023

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The energy crisis and global shift toward sustainability drive the need for sustainable technologies that utilize often-wasted forms of energy. A multipurpose lighting device with a simplistic design that does not need electricity sources or conversions can be one such futuristic device. This study investigates the novel concept of a powerless lighting device driven by stray magnetic fields induced by power infrastructure for obstruction warning light systems. The device consists of mechanoluminescence (ML) composites of a Kirigami-shaped polydimethylsiloxane (PDMS) elastomer, ZnS:Cu particles, and a magneto-mechano-vibration (MMV) cantilever beam. Finite element analysis and luminescence characterization of the Kirigami structured ML composites are discussed, including the stress-strain distribution map and comparisons between different Kirigami structures based on stretchability and ML characteristic trade-offs. By coupling a Kirigami-structured ML material and an MMV cantilever structure, a device that can generate visible light as luminescence from a magnetic field can be created. Significant factors that contribute to luminescence generation and intensity are identified and optimized. Furthermore, the feasibility of the device is demonstrated by placing it in a practical environment. This further proves the functionality of the device in harvesting weak magnetic fields into luminescence or light, without complicated electrical energy conversion steps.

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“…The magneto–mechano–electric (MME) generator is a promising energy-harvesting device for the self-powering system of wireless sensor networks (WSNs). It converts ubiquitous low-frequency magnetic noise to usable electrical energy with a high efficiency exceeding 20%, and it can be integrated easily into diverse smart infrastructures. − A cantilever-structured MME generator is composed of a magnetoelectric (ME) composite comprising piezoelectric and magnetostrictive materials interfacially coupled to each other via an interfacial adhesive epoxy layer with a permanent magnetic proof tip mass, operated at its resonance frequency. − The mechanism of MME energy conversion can be explained by two effects: the ME effect (product properties of the piezoelectric and magnetostrictive effects) and the magnetic flexural torque originating from the magnetic proof tip mass, where the maximum power contributions are typically approximately 21 and 29%, respectively. Further, an additional ∼50% of the output power is induced by their synergistically combined interaction. ,, …”

Section: Introductionmentioning

confidence: 99%

Enhancement of Energy-Harvesting Performance of Magneto–Mechano–Electric Generators through Optimization of the Interfacial Layer

Kim

Thakre

Patil

et al. 2021

ACS Appl. Mater. Interfaces

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Among various energy harvester paradigms, the simple cantilever-structured magneto–mechano–electric (MME) energy generator comprises a piezoelectric material laminated on a magnetostrictive metal plate and permanent magnets as proof mass, exhibiting excellent magnetic energy-harvesting performance. The current challenge in using MME energy harvesters is the mechano–electric coupling at the interface between the piezoelectric material and magnetostrictive metal layer, which depends significantly on the mechanical properties of the interfacial adhesive layer. In this study, the effects of four types of adhesive interfacial layers on the output power and environmental and fatigue resistances of MME harvesters are systematically investigated. An optimized MME energy generator with an adhesive interfacial layer of 18.8 μm thickness and elastic modulus of 3.1 GPa achieves colossal enhancement (∼300%) with a maximum output power density of 0.92 mW/cm2, while a 10 Oe (=10 G = 1 mT in air; 60 Hz) magnetic field is applied. In addition, the generator exhibits a robust endurance of continuous 108 fatigue cycles and excellent temperature stability in the range of −30 to 70 °C. The presented MME generator, which harvests stray magnetic energy reliably, is promising as a low-cost and efficient autonomous power source for Internet of Things devices, wireless sensor networks, and so on.

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A Magneto-Mechano-Electric Generator Based on Lead-Free Single-Crystal Fibers for Robust Scavenging of Ambient Magnetic Energy

Cited by 24 publications

References 25 publications

Self‐biased magnetoelectric composite for energy harvesting

Self‐biased magnetoelectric composite for energy harvesting

Magnetically Driven Powerless Lighting Device with Kirigami Structured Magneto–Mechanoluminescence Composite

Enhancement of Energy-Harvesting Performance of Magneto–Mechano–Electric Generators through Optimization of the Interfacial Layer

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