Experimental Demonstration of Miniaturized Magnetoelectric Wireless Power Transfer System For Implantable Medical Devices

Mukherjee, Dibyajyoti; Mallick, Dhiman

doi:10.1109/mems51670.2022.9699779

Cited by 9 publications

(3 citation statements)

References 6 publications

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“…further demonstrations of biological compatibility 45 establish MENPs as injectable agents for in vivo preparations allowing for both acute and chronic studies. Further development on magnetoelectric transistors 46 , biocompatible implantable devices 47 , and integrated brain-computer interfaces 39,48 could serve as powerful new platforms for studying and managing a wide set of pathologies.…”

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confidence: 99%

In silico assessment of electrophysiological neuronal recordings mediated by magnetoelectric nanoparticles

Bok

Haber

et al. 2022

Sci Rep

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Magnetoelectric materials hold untapped potential to revolutionize biomedical technologies. Sensing of biophysical processes in the brain is a particularly attractive application, with the prospect of using magnetoelectric nanoparticles (MENPs) as injectable agents for rapid brain-wide modulation and recording. Recent studies have demonstrated wireless brain stimulation in vivo using MENPs synthesized from cobalt ferrite (CFO) cores coated with piezoelectric barium titanate (BTO) shells. CFO–BTO core–shell MENPs have a relatively high magnetoelectric coefficient and have been proposed for direct magnetic particle imaging (MPI) of brain electrophysiology. However, the feasibility of acquiring such readouts has not been demonstrated or methodically quantified. Here we present the results of implementing a strain-based finite element magnetoelectric model of CFO–BTO core–shell MENPs and apply the model to quantify magnetization in response to neural electric fields. We use the model to determine optimal MENPs-mediated electrophysiological readouts both at the single neuron level and for MENPs diffusing in bulk neural tissue for in vivo scenarios. Our results lay the groundwork for MENP recording of electrophysiological signals and provide a broad analytical infrastructure to validate MENPs for biomedical applications.

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confidence: 99%

In silico assessment of electrophysiological neuronal recordings mediated by magnetoelectric nanoparticles

Bok

Haber

et al. 2022

Sci Rep

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“…This necessitates deployment of renewable, local energy sources that continually generate electrical power to fuel IoT devices. Energy harvesting [3] involves capturing energy from natural sources of energy (solar, wind, geothermal) and storing it for future use or wirelessly transmitting [4] it to power devices. Among the various available natural resources, mechanical vibration energy [5,6] is ubiquitous and has a comparatively high power density.…”

Section: Introductionmentioning

confidence: 99%

Direct current triboelectric nanogenerators: a review

Naval¹,

Jain²,

Mallick³

2022

J. Micromech. Microeng.

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Rapid advancements in the Internet of Things (IoT) have revolutionized the world by creating a proliferation of low-power wireless devices and sensor nodes. The issue of powering these devices remains a challenge as they require regulated direct current (DC) supply for their operation. Mechanical energy scavenging mechanisms are viewed and promoted as renewable powering solutions for low-power electronics. However, such energy harvesting mechanisms generate alternating current (AC). Converting AC to DC is a critical issue as it involves using a rectifier, which is not a preferred option considering additional circuitry, power requirements along with the significant threshold voltage of even the most state-of-the-art diodes. DC Triboelectric Nanogenerators (DC-TENG) have emerged as a direct powering solution based on the triboelectric effect, similar to the conventional AC-TENG devices. Such devices incorporate specific strategies like electrostatic breakdown, mechanical switching, and dynamic Schottky junction to generate a unidirectional current. Based on these strategies, different topologies for DC-TENG devices have been developed by researchers over time. Since its inception in 2014, the study on DC-TENG has rapidly emerged and expanded. This article reviews the progress made in association with DC-TENG mechanisms and topologies, theoretical analysis, comparative study, and applications. This article also examines the challenges, recent advancements, and future research prospects in this domain.

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“…This stress leads to the generation of electric energy through the piezoelectric effect. [46][47][48][49][50][51][52] Researchers have also reported flexible patches of ME energy harvesters for biomedical applications such as a poly(vinylidene fluoride-trifluoroethylene) (PVDF-TrFE)-and CoFe 2 O 4 (CFO)-based nanofiber flexible patch proposed by Chaeyoung et al [53] which has produced a voltage of 540 mV, 6.61 μW power, and magneto electric coefficient of (α ME ) of 330 mV cm À1 Oe À1 . Another work by Levent et al [54] reported a piezoelectric-and magnetoelectric-based flexible nanogenerator which has produced the voltage and power of 17.5 mV and 0.4 μW, respectively.…”

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confidence: 99%

Magnetoelectric Core–Shell Nanoparticle–Based Wearable Hybrid Energy Harvesters for Biomedical Applications

Murali,

Mukherjee,

Das

et al. 2023

Adv Eng Mater

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In this work, a novel barium titanate–coated cobalt ferrite core–shell magnetoelectric nanoparticle and poly(3,4‐ethylenedioxythiophene): polystyrene sulfonate–based wearable energy‐harvesting patch for wireless power‐transfer applications are proposed. The developed flexible patch has unique ease of fabrication and high‐efficiency energy conversion capability from the magnetic field and mechanical motion to the electric field as compared to bulk or thin‐film‐based devices. This unique power‐transfer capability of this device is achieved due to the crystalline nature of fabricated nanoparticles, which is confirmed using X‐ray diffraction and high‐resolution transmission electron microscopy. This wearable patch can generate a high voltage of 560 mV when exposed to a 40 μT alternating magnetic field at the resonance frequency of 48.6 kHz. The hybrid mode of electric power generation is achieved by coupling bodily motion with the remotely applied alternating magnetic field (40 μT), which results in the generation of a higher electric potential of 860 mV and maximum power density of 0.458 mW cm−3 across a 10 kΩ load. The maximum magnetoelectric coefficient is recorded as 1300 mV cm−1 Oe−1. The flexible nature and hybrid operation of the proposed device make it an efficient alternative for powering a wide range of wearable medical electronic devices.

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Experimental Demonstration of Miniaturized Magnetoelectric Wireless Power Transfer System For Implantable Medical Devices

Cited by 9 publications

References 6 publications

In silico assessment of electrophysiological neuronal recordings mediated by magnetoelectric nanoparticles

In silico assessment of electrophysiological neuronal recordings mediated by magnetoelectric nanoparticles

Direct current triboelectric nanogenerators: a review

Magnetoelectric Core–Shell Nanoparticle–Based Wearable Hybrid Energy Harvesters for Biomedical Applications

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