Magnetoelectric response on Terfenol-D/ P(VDF-TrFE) two-phase composites

Brito‐Pereira, Ricardo; Ribeiro, Clarisse; Lanceros‐Méndez, S.; Martins, P.

doi:10.1016/j.compositesb.2017.03.055

Cited by 56 publications

(30 citation statements)

References 37 publications

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“…These materials can generate voltage upon magnetic stimulation through the coupling of the magnetostrictive effect (magnetic to mechanical) and piezoelectric effect (mechanical to electric) [19,20]. Magnetoelectric composites are thus achieved combining a piezoelectric polymer with magnetostrictive particles [21][22][23], and their potential for tissue engineering and enhancement of cellular differentiation processes has been demonstrated [24,25].In some tissue engineering applications, it is suitable that the used scaffolds degrade in a biological environment to be gradually replaced by the newly formed tissue [26]. In this context, the most used piezoelectric materials for tissue engineering applications belong to the poly(vinylidene fluoride) family [12] and do not possess biodegradability, which may hinder some applications [27].…”

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confidence: 99%

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confidence: 99%

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Morphology Dependence Degradation of Electro- and Magnetoactive Poly(3-hydroxybutyrate-co-hydroxyvalerate) for Tissue Engineering Applications

et al. 2020

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Poly(hydroxybutyrate-co-hydroxyvalerate) (PHBV) is a piezoelectric biodegradable and biocompatible polymer suitable for tissue engineering applications. The incorporation of magnetostrictive cobalt ferrites (CFO) into PHBV matrix enables the production of magnetically responsive composites, which proved to be effective in the differentiation of a variety of cells and tissues. In this work, PHBV and PHBV with CFO nanoparticles were produced in the form of films, fibers and porous scaffolds and subjected to an experimental program allowing to evaluate the degradation process under biological conditions for a period up to 8 weeks. The morphology, physical, chemical and thermal properties were evaluated, together with the weight loss of the samples during the in vitro degradation assays. No major changes in the mentioned properties were found, thus proving its applicability for tissue engineering applications. Degradation was apparent from week 4 and onwards, leading to the conclusion that the degradation ratio of the material is suitable for a large range of tissue engineering applications. Further, it was found that the degradation of the samples maintain the biocompatibility of the materials for the pristine polymer, but can lead to cytotoxic effects when the magnetic CFO nanoparticles are exposed, being therefore needed, for magnetoactive applications, to substitute them by biocompatible ferrites, such as an iron oxide (Fe 3 O 4 ).Polymers 2020, 12, 953 2 of 15In particular, smart polymers are gaining increasing attention as substrates and scaffolds for tissue engineering applications mainly as electroactive substrates-mostly piezoelectric ones-such as poly(l-lactic acid) (PLLA) [5,6], poly(hydroxybutyrate) (PHB) [7], poly(hydroxybutyrate-co-hydroxyvalerate) (PHBV) [8,9] and poly(vinylidene fluoride) (PVDF) [10,11], among others. The ability of those materials to actively enhance and stimulate cellular differentiation processes has been already proven [12,13], based on their mechano-transduction characteristics, generating voltage upon mechanical stimulation and vice-versa [14]. Piezoelectricity is a property that appears in a diversity of human tissues, including DNA, bones or tendons, emphasizing the relevance of electrical and mechano-electrical stimulation in physiological processes [15,16]. In a different approach to apply mechanical and/or mechano-electrical signals, magnetoelectric materials have also proven their aptness for tissue engineering applications, with the particularity of allowing electrical stimulation of the materials and, therefore, on the cells cultured on them, through magnetic solicitation [17,18]. These materials can generate voltage upon magnetic stimulation through the coupling of the magnetostrictive effect (magnetic to mechanical) and piezoelectric effect (mechanical to electric) [19,20]. Magnetoelectric composites are thus achieved combining a piezoelectric polymer with magnetostrictive particles [21][22][23], and their potential for tissue engineering and enhancement of cellular di...

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Morphology Dependence Degradation of Electro- and Magnetoactive Poly(3-hydroxybutyrate-co-hydroxyvalerate) for Tissue Engineering Applications

et al. 2020

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“…The trilayered composite configuration (magnetostrictive/piezoelectric/magnetostrictive laminate) showed more pronounced ME behavior (75 V/cmOe) than the bilayer configuration (66 V/cmOe). [39][40][41][42] Brito-Pereira et al [43] developed ME particulate composite films composed of Terfenol-D particles embedded in P(VDF-TrFE) (70/30). Tang and Lu [38] proposed a self-biased miniature homogenous ME structure consisting of hard-processed Ni foils and a tape-cast multilayer high capacitance PZT plate.…”

Section: Magnetoelectric Materialsmentioning

confidence: 99%

“…The obtained ME charge was higher than that of most conventional ME composites in a zero-bias magnetic field. [39][40][41][42] Brito-Pereira et al [43] developed ME particulate composite films composed of Terfenol-D particles embedded in P(VDF-TrFE) (70/30). They concluded that a high magnetoelectric voltage coupling (38 mV/cmOe) allows the development of flexible ME devices.…”

Section: Magnetoelectric Materialsmentioning

confidence: 99%

A Review on Piezoelectric, Magnetostrictive, and Magnetoelectric Materials and Device Technologies for Energy Harvesting Applications

2017

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In the coming era of the internet of things (IoT), wireless sensor networks that monitor, detect, and gather data will play a crucial role in advancements in public safety, human healthcare, industrial automation, and energy management. Batteries are currently the power source of choice for operating wireless network devices due to their ease of installation; however, they require periodic replacement due to capacity limitations. Within the scope of the IoT, battery maintenance of the trillion sensor nodes that may be implemented will be practically infeasible from environmental, resource, and labor cost perspectives. In considering individual self-powered sensor nodes, the idea of harvesting energy from ambient vibrations, heat, and electromagnetic waves has recently triggered noticeable research interest in the academic community. This paper gives an overview of energy harvesting materials and systems. Three main categories are presented: piezoelectric ceramics/polymers, magnetostrictive alloys, and magnetoelectric (ME) multiferroic composites. State-of-the-art harvesting materials and structures are presented with a focus on characterization, fabrication, modeling and simulation, and durability and reliability. Some perspectives and challenges for the future development of energy harvesting materials are also highlighted.

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“…From the different types of magnetoactive materials that can be used for magnetoactive proximity sensors, magnetoelectric (ME) [15,16] composites and related devices represent a growing field over the last decade, due to the magnetic to electric energy conversion capability [17], the magnetic control of polarization and also the possibility of obtaining self-powered devices [18]. These ME composites have emerged as a solution to overcome the limitations of single-phase ME materials, namely, low-temperature coupling and low-ME effect [19,20], allowing innovative functionalities to develop ultra-fast, multifunctional and miniaturized devices [17,21,22].…”

Section: Introductionmentioning

confidence: 99%

Magnetic Proximity Sensor Based on Magnetoelectric Composites and Printed Coils

et al. 2020

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Magnetic sensors are mandatory in a broad range of applications nowadays, being the increasing interest on such sensors mainly driven by the growing demand of materials required by Industry 4.0 and the Internet of Things concept. Optimized power consumption, reliability, flexibility, versatility, lightweight and low-temperature fabrication are some of the technological requirements in which the scientific community is focusing efforts. Aiming to positively respond to those challenges, this work reports magnetic proximity sensors based on magnetoelectric (ME) polyvinylidene fluoride (PVDF)/Metglas composites and an excitation-printed coil. The proposed magnetic proximity sensor shows a maximum resonant ME coefficient (α) of 50.2 Vcm −1 Oe −1 , an AC linear response (R 2 = 0.997) and a maximum voltage output of 362 mV, which suggests suitability for proximity-sensing applications in the areas of aerospace, automotive, positioning, machine safety, recreation and advertising panels, among others.

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Magnetoelectric response on Terfenol-D/ P(VDF-TrFE) two-phase composites

Cited by 56 publications

References 37 publications

Morphology Dependence Degradation of Electro- and Magnetoactive Poly(3-hydroxybutyrate-co-hydroxyvalerate) for Tissue Engineering Applications

Morphology Dependence Degradation of Electro- and Magnetoactive Poly(3-hydroxybutyrate-co-hydroxyvalerate) for Tissue Engineering Applications

A Review on Piezoelectric, Magnetostrictive, and Magnetoelectric Materials and Device Technologies for Energy Harvesting Applications

Magnetic Proximity Sensor Based on Magnetoelectric Composites and Printed Coils

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