Spray-printed magnetoelectric multifunctional composites

Martins, P.; Nunes, J. Serrado; Oliveira, Joana; Peřinka, Nikola; Lanceros‐Méndez, S.

doi:10.1016/j.compositesb.2020.107829

Cited by 38 publications

(25 citation statements)

References 45 publications

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“…Those facts are explained by the tailorable magnetic hysteresis, coercivity and high magnetostrictive coefficients (up to some dozens of ppms) of ferrites [295,297] and by the high magnetic permeability, piezomagnetic coefficient (2ppm.Oe -1 ) and stiffness of Metglas [298,299]. Such materials have offered optimized features that triggered new applications with easy production at low temperatures and additive manufacturing capability [300,301] (inkjet printing, screen printing, and spray-printing, among others), adjusted mechanical properties for flexible devices, large area devices, and biocompatible applications [294]. This will be discussed in the next chapter.…”

Section: Methodsmentioning

confidence: 99%

Roadmap on Magnetoelectric Materials and Devices

et al. 2021

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The possibility to tune the magnetic properties of materials with voltage (converse magnetoelectricity) or to generate electric voltage with magnetic fields (direct magnetoelectricity) has opened new avenues in a large variety of technological fields, ranging from information technologies to healthcare devices and including a great number of multifunctional integrated systems such as mechanical antennas, magnetometers, radiofrequency (RF) tunable inductors, etc., which have been realized due to the strong strainmediated magnetoelectric (ME) coupling found in ME composites. The development of singlephase multiferroic materials (which exhibit simultaneous ferroelectric and ferromagnetic or antiferromagnetic orders), multiferroic heterostructures, as well as progress in other ME mechanisms, such as electrostatic surface charging or magneto-ionics (voltage-driven ion migration) have a large potential to boost energy efficiency in spintronics and magnetic actuators. This paper focuses on existing ME materials and devices and reviews the state of the art in their

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Section: Methodsmentioning

confidence: 99%

Roadmap on Magnetoelectric Materials and Devices

et al. 2021

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“…The XPS profiles differ in the quantity of oxygenated groups in the surface and of sp 2 carbon. The lowest ratio of sp 2 /sp 3 was registered in the non-functionalized NDM composite (0.94), which shows that the functionalization treatments leads to an increase in the number of surface structural defects of NDs structure. The N1s XPS spectra of the ND samples (Figures 1c, f, i and l) can be deconvoluted in four components: the peak N6 is assigned to pyridinic-N groups (≈399 eV), the peak N5 correspond to pyrrolic-N groups (≈400 eV) and the peak NQ deals with quaternary nitrogen (≈401) 37 ; the peaks at ≈403 and ≈405 eV are linked to N oxides 38 .…”

Section: Resultsmentioning

confidence: 87%

“…Figure 1 shows the XPS results of the ND samples. The C1s peak around 286 eV (Figures 1a, d, g and j) is assigned to sp 3 bonded carbon (C-C) and the peak at ≈284.6 eV refers to sp 2 carbons (C=C) associated to specific defects in the surface of the NDs 34 . The peaks at around 287 eV (C-O) and 288 eV (C=O) deal with ND oxygenated surface groups.…”

Section: Resultsmentioning

confidence: 99%

“…Furthermore, new functional properties can be added otherwise not existing in the polymer matrix, such as magnetic 3 or photochromic 4 response, among others. Other properties that can be added and/or enhanced are those related to the applicability of the materials as coatings, such as tailored hydrophobicity 5 , self-cleaning 6 or antimicrobial features 7 .…”

Section: Introductionmentioning

confidence: 99%

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Antimicrobial and Antibiofilm Properties of Fluorinated Polymers with Embedded Functionalized Nanodiamonds

Nunes-Pereira

Fernandes

Carvalho

et al. 2020

ACS Appl. Polym. Mater.

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Environmentally resilient antimicrobial coatings are becoming increasingly required for a wide range of applications. For this purpose, nanocomposite thin films of poly(vinylidene fluoride) (PVDF) filled with several types of functionalized nanodiamonds (NDs) were processed by solvent casting. The effects of ND inclusion and functionalization in their morphological, structural, optical, thermal, and electrical properties were evaluated taking into account the type of the nanofiller and a concentration up to 2 wt %. The morphology, structure, and thermal features of the polymer matrix are governed by the processing conditions, and no noticeable changes occurred due to the presence of the ND fillers. The polymer crystallized mainly in the α phase with a crystallinity of ≈60%. In turn, the optical transmittance from 200 to 800 nm and the dielectric constant effectively depended on the ND type and content. The inclusion of the ND particles effectively provided antimicrobial properties to the films, which depended on the ND functionalization. This study thus shows that the incorporation of functionalized NDs into PVDF allows the development of antimicrobial coatings with tailorable optical and dielectric properties, which could be of great importance to face nowadays pandemic crisis scenario.

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“…Innovatively multifunctional ME composites of poly(vinylidene fluoride-co-trifluoroethylene) P(VDF-TrFE)/CoFe 2 O 4 were spray-printed [ 86 ], being observed a ME voltage coefficient of 21.2 mV·cm −1 ·Oe −1 , demonstrating the suitability of these materials for cost-effective and large-scale sensor/actuator applications, namely in aerospace, automotive and recreational products.…”

Section: Polymer-based Magnetoelectricsmentioning

confidence: 99%

Magnetoelectrics: Three Centuries of Research Heading Towards the 4.0 Industrial Revolution

et al. 2020

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Magnetoelectric (ME) materials composed of magnetostrictive and piezoelectric phases have been the subject of decades of research due to their versatility and unique capability to couple the magnetic and electric properties of the matter. While these materials are often studied from a fundamental point of view, the 4.0 revolution (automation of traditional manufacturing and industrial practices, using modern smart technology) and the Internet of Things (IoT) context allows the perfect conditions for this type of materials being effectively/finally implemented in a variety of advanced applications. This review starts in the era of Rontgen and Curie and ends up in the present day, highlighting challenges/directions for the time to come. The main materials, configurations, ME coefficients, and processing techniques are reported.

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Spray-printed magnetoelectric multifunctional composites

Cited by 38 publications

References 45 publications

Roadmap on Magnetoelectric Materials and Devices

Roadmap on Magnetoelectric Materials and Devices

Antimicrobial and Antibiofilm Properties of Fluorinated Polymers with Embedded Functionalized Nanodiamonds

Magnetoelectrics: Three Centuries of Research Heading Towards the 4.0 Industrial Revolution

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