CoFe2O4-BaTiO3 Core-Shell-Embedded Flexible Polymer Composite as an Efficient Magnetoelectric Energy Harvester

Materials Today Physics, Год журнала: 2024, Номер 48, С. 101567 - 101567

Опубликована: Окт. 10, 2024

Язык: Английский

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Self-Powered Sensors Made with Fabric-Based Electrodes and a Conductive Coating

ACS Applied Materials & Interfaces, Год журнала: 2024, Номер 16(27), С. 35516 - 35524

Опубликована: Июнь 27, 2024

Amidst the growing challenge of meeting global energy demands with conventional sources, self-powered devices offer promising solution. Flexible and stretchable electronics are pivotal in wearable technology, enhancing scope functionality these devices. This study employs potassium sodium niobite-lithium antimonate (K

Язык: Английский

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A Flexible Photovoltaic Fatigue Factor for Quantification of Mechanical Device Performance

Advanced Functional Materials, Год журнала: 2025, Номер unknown

Опубликована: Янв. 5, 2025

Abstract Flexible emerging photovoltaic technologies, such as organic and perovskite photovoltaics, hold great potential for integration into tents, wearable electronics, other portable applications. Recently, Fukuda et al. (2024) propose a bending test protocol standardizing the mechanical performance characterization of flexible solar cells, focusing on 1% strain over 1 000 cycles. This marked an important step toward establishing consistency good practices in literature. However, even with this unified protocol, accurately comparing flexibility cells is hindered by variated influence parameters like thickness, radius, power conversion efficiency ( PCE ) evolution during testing. Herein, new figure merit introduced, fatigue factor F ), which integrates retention, strain, cycles cohesive framework. Guided detailed multilayer model, metric enables more accurate analysis promotes consistent reporting, paving way optimization photovoltaics.

Язык: Английский

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Omnidirectionally Stretchable Spin-Valve Sensor Array with Stable Giant Magnetoresistance Performance

ACS Nano, Год журнала: 2025, Номер unknown

Опубликована: Янв. 30, 2025

Flexible magnetic sensors, which have advantages such as deformability, vector field sensing, and noncontact detection, are an important branch of flexible electronics significant applications in fields magnetosensitive electronic skin. Human skin surfaces complicated deformations, pose a demand for sensors that can withstand omnidirectional strain while maintaining stable performance. However, existing sensor arrays only stretching along specific directions prone to failure under deformations. Here, we demonstrate omnidirectionally stretchable spin-valve array with high stretchability excellent By integrating the modulus-distributed structure liquid metal, maintain its performance complex enabling overall system stretchability. The fabricated exhibits nearly unchanged giant magnetoresistance ratio 8% maximum sensitivity 0.93%/Oe upon up 86% without fatigue over 1000 cycles. Furthermore, this is characterized by sensing deformations be applied Our results provide insights into development next-generation wearable magnetoelectronics.

Язык: Английский

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Magneto-mechanical effects in a flexible magnetic system studied through combined MOKE magnetometry and mechanical testing

Review of Scientific Instruments, Год журнала: 2025, Номер 96(2)

Опубликована: Фев. 1, 2025

We explore the magnetic properties of a thin Co film deposited on Kapton® substrates using magneto-optical Kerr effect in longitudinal configuration. developed magnetometer integrated with tensile testing machine to investigate magnetization reversal phenomena under applied strain. The machine, custom-designed fit experimental constraints, applies uniaxial stress samples, facilitating study magnetoelastic effects. Calibration digital image correlation ensures accurate strain measurements. Our findings demonstrate that application significantly influences curves, highlighting emergence anisotropies and changes coercive saturation fields.

Язык: Английский

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Polydopamine Assisted Electroless Deposition of Strongly Adhesive NiFe Films for Flexible Spintronics

ACS Applied Materials & Interfaces, Год журнала: 2025, Номер unknown

Опубликована: Фев. 13, 2025

Cost-effective techniques for depositing durable magnetic thin films are essential realizing flexible spintronic devices in wearable and soft robotics applications. Here, we introduce a highly scalable electroless deposition technique coating ferromagnetic Ni80Fe20 onto polyimide polyethylene terephthalate substrates via polydopamine intermediate layer. The resultant demonstrated very good adhesion strength, especially those on substrates, which attained the highest ASTM 3359 rating of 5B exhibited tensile pull-off strength greater than 5.82 MPa (ASTM D4541). With assistance XPS TEM results, this unusual adhesive NiFe polymers can be traced to formation primary bonds across entire coating: (i) covalent bonding between polymer substrate polydopamine, (ii) coordinate catechol groups palladium ions, (iii) metallic NiFe. By annealing NiFe-on-polyimide samples at 300 °C-400 °C, crystallinity material was found improve, increased saturation magnetization 1350 emu/cm3 decreased coercivity 20 Oe. Ferromagnetic resonance also showed ∼31% improvement film's Gilbert damping constant after °C. Application bending strain squareness ratio by 22% but annealed film 18%. These results suggest that were sufficient quality devices, although their properties could improved if surface roughness physically deposited films.

Язык: Английский

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Wet Spinning/UV Dual-Curing enabled 3D printable fiber for intelligent electronic devices

Chemical Engineering Journal, Год журнала: 2024, Номер 498, С. 155186 - 155186

Опубликована: Авг. 25, 2024

Язык: Английский

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Magnetoelectric and energy harvesting capabilities of PVDF-Na0.5Bi0.5TiO3-BaFe12O19 composites

Ceramics International, Год журнала: 2025, Номер unknown

Опубликована: Март 1, 2025

Язык: Английский

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High-performance graphene films for thermal management and electromagnetic shielding prepared through high-temperature annealing

Colloids and Surfaces A Physicochemical and Engineering Aspects, Год журнала: 2025, Номер unknown, С. 136692 - 136692

Опубликована: Март 1, 2025

Язык: Английский

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A liquid metal-based flexible magnetoelectric device with high-efficiency electromechanical conversion

Materials Today Energy, Год журнала: 2025, Номер unknown, С. 101879 - 101879

Опубликована: Апрель 1, 2025

Язык: Английский

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