Enhancing the Piezoelectric Sensing of CFO@PDA/P(VDF-TrFE) Composite Films through Magnetic Field Orientation

Zhou, Zhenji; Chen, You; Li, Zhong; Xia, Weimin; Tian, Na

doi:10.1021/acsami.2c12861

Cited by 11 publications

(2 citation statements)

References 33 publications

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“…The results given in Figure b–d reveal how the electrical poling leads to better pyroelectric properties than those recently reported in such polymer composite films. The obtained pyroelectric sensitivity, − power density, − and pyroelectric coefficients − are comparable (or better) to most of the recently published reports (Figure d–f). Despite no significantly enhanced magnetic moment (Figure a), both FE (Figure a) and ME (Figure b) properties are improved markedly.…”

Section: Resultssupporting

confidence: 90%

“…(b) The temperature profile, corresponding pyroelectric current, and (c) output voltage from the unpoled (self-poled) and electrically poled 30 FT over thermal fluctuations at a 0.1 Hz frequency. (d) Comparison of pyroelectric sensitivity ( S ), − (e) power density ( P d ), − and (f) pyroelectric coefficients of ferrite-doped P(VDF-TrFE) composite and neat P(VDF-TrFE) films. − …”

Section: Resultsmentioning

confidence: 99%

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A Spin-Charge-Regulated Self-Powered Nanogenerator for Simultaneous Pyro-Magneto-Electric Energy Harvesting

Saini,

Sengupta,

Mondal

et al. 2024

ACS Nano

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In view of the depletion of natural energy resources, harvesting energy from waste is a revolution to simultaneously capture, unite, and recycle various types of waste energies in flexible devices. Thus, in this work, a spin-charge-regulated pyro-magnetoelectric nanogenerator is devised at a well-known ferroelectric P(VDF-TrFE) copolymer. It promptly stores thermal-magnetic energies in a "capacitor" that generates electricity at room temperature. The ferroelectric domains are regulated to slip at the interfaces (also twins) of duly promoting polarization and other properties. An excellent pyroelectric coefficient p ∼ 615 nC•m −2 •K −1 is obtained, with duly enhanced stimuli of a thermal sensitivity ∼1.05 V•K −1 , a magnetoelectric coefficient α me ∼8.8 mV•cm −1 •Oe −1 at 180 Hz (resonance frequency), and a magnetosensitivity ∼473 V/T. It is noteworthy that a strategy of further improving p (up to 41.2 μC•m −2 •K −1 ) and α me (up to 23.6 mV•cm −1 •Oe −1 ) is realized in the electrically poled dipoles. In a model hybrid structure, the spins lead to switch up the electric dipoles parallel at the polymer chains in a cohesive charged layer. It is an innovative approach for efficiently scavenging waste energies from electric vehicles, homes, and industries, where abundant thermal and magnetic energies are accessible. This sustainable strategy could be useful in next-generation self-powered electronics.

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Section: Resultssupporting

confidence: 90%

Section: Resultsmentioning

confidence: 99%

A Spin-Charge-Regulated Self-Powered Nanogenerator for Simultaneous Pyro-Magneto-Electric Energy Harvesting

Saini,

Sengupta,

Mondal

et al. 2024

ACS Nano

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Magneto‐Mechano‐Electric Cascade Stimulation System Accelerates Wound Healing Constructed by Biodegradable Magnetoelectric Nanofibers

Zhang,

Zhu,

Liu

et al. 2023

Adv Funct Materials

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Reconstructing the intricate biophysical microenvironment to provide multiple biologically beneficial stimulation is deemed a promising therapeutic strategy. However, developing multi‐biophysical stimuli with wireless integration and accurate management remains a formidable challenge. Herein, a novel design of a magneto‐mechano‐electric (MME) cascade stimulation system based on aligned magnetoelectric nanofibrous membranes (PLLA/CFO) is reported. Simply regulating the loading amount of CFO nanoparticles endows the PLLA/CFO membranes with excellent magnetism, enhanced crystallization, and resultant piezoelectric responsiveness, thus providing built‐in topographical guidance and nanoscale magnetic field as well as manageably remote stimulation. Specifically, assisted by an external magnetic field (EMF), the magnetic response in PLLA/CFO can be amplified to offer an apparent deformation, which then induces the output of mechanical and electrical cues. Benefiting from the slow degradability of PLLA and continuous EMF triggering, such a performance can be well modulated to match the practical wound healing process, demonstrated by the repair of a rat full‐thickness skin defect. More importantly, this work offers a new strategy to reconstruct the complex biophysical microenvironment in a wireless remote manner.

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Modulating Lineage Specification in Stem Cell Differentiation via Bioelectrical Stimulation Intensity Matching

Zhang,

Yan,

et al. 2023

Adv Materials Inter

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Development and regeneration in biological tissues are fundamentally affected by stem‐cell‐fate commitment. Bioelectricity is heterogeneous between different tissues and crucially regulates cell behaviors, including cell differentiation. However, the effects of heterogeneous bioelectricity on stem‐cell differentiation remain poorly understood. Herein, it is shown that providing stem cells with electrical stimulation matching the endogenous membrane potentials of cells derived from different tissues (osteogenic‐related: −55.05 ± 4.22 mV, neurogenic‐related: −84.8 ± 7.48 mV) can induce their osteogenic or neurogenic lineage commitment. Molecular dynamics simulations indicated that the osteogenic‐related surface potential favors the adsorption of fibronectin, while the neurogenic‐related surface potential enhances the adsorption of FGF‐2. These different protein adsorptions trigger either downstream Wnt or Erk signaling, which direct stem‐cell differentiation. Surface‐potential‐mediated lineage‐specification of stem cells using bioelectrical intensity has enormous potential application value in tissue regenerative therapy.

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Enhancing the Piezoelectric Sensing of CFO@PDA/P(VDF-TrFE) Composite Films through Magnetic Field Orientation

Cited by 11 publications

References 33 publications

A Spin-Charge-Regulated Self-Powered Nanogenerator for Simultaneous Pyro-Magneto-Electric Energy Harvesting

A Spin-Charge-Regulated Self-Powered Nanogenerator for Simultaneous Pyro-Magneto-Electric Energy Harvesting

Magneto‐Mechano‐Electric Cascade Stimulation System Accelerates Wound Healing Constructed by Biodegradable Magnetoelectric Nanofibers

Modulating Lineage Specification in Stem Cell Differentiation via Bioelectrical Stimulation Intensity Matching

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