Multifunctional magneto-polymer matrix composites for electromagnetic interference suppression, sensors and actuators

Charles, Andrew D.M.; Rider, Andrew N.; Brown, Suzanne; Wang, Chun H.

doi:10.1016/j.pmatsci.2020.100705

Cited by 75 publications

(25 citation statements)

References 453 publications

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“…In order to attenuate undesirable electromagnetic (EM) wave, it is imperative and urgent to exploit high-performance EMI shielding materials [5][6][7][8]. Traditionally, metal-based materials are widely used in efficient EMI shielding because of the high conductivity and/or permeability, but intrinsic high density, easy corrosion, nonflexibility, and difficult processing make them less desirable for smart and subtle electronics [9][10][11]. As a consequence, it has created a crucial demand for developing new lightweight flexible EMI shielding materials with favorable mechanical properties.…”

Section: Introductionmentioning

confidence: 99%

Directional Electromagnetic Interference Shielding Based on Step-Wise Asymmetric Conductive Networks

Xue

Cheng

et al. 2021

Nano-Micro Lett.

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Some precision electronics such as signal transmitters need to not only emit effective signal but also be protected from the external electromagnetic (EM) waves. Thus, directional electromagnetic interference (EMI) shielding materials (i.e., when the EM wave is incident from different sides of the sample, the EMI shielding effectiveness (SE) is rather different) are strongly required; unfortunately, no comprehensive literature report is available on this research field. Herein, Ni-coated melamine foams (Ni@MF) were obtained by a facile electroless plating process, and multiwalled carbon nanotube (CNT) papers were prepared via a simple vacuum-assisted self-assembly approach. Then, step-wise asymmetric poly(butylene adipate-co-terephthalate) (PBAT) composites consisting of loose Ni@MF layer and compact CNT layer were successfully fabricated via a facile solution encapsulation approach. The step-wise asymmetric structures and electrical conductivity endow the Ni@MF/CNT/PBAT composites with unprecedented directional EMI shielding performances. When the EM wave is incident from Ni@MF layer or CNT layer, Ni@MF-5/CNT-75/PBAT exhibits the total EMI SE (SET) of 38.3 and 29.5 dB, respectively, which illustrates the ΔSET of 8.8 dB. This work opens a new research window for directional EMI shielding composites with step-wise asymmetric structures, which has promising applications in portable electronics and next-generation communication technologies.

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Section: Introductionmentioning

confidence: 99%

Directional Electromagnetic Interference Shielding Based on Step-Wise Asymmetric Conductive Networks

Xue

Cheng

et al. 2021

Nano-Micro Lett.

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“…Композиты зачастую используют не только как конструкционные, но также и как мультифункциональные материалы [231,232], которые диагностируют похожими методами. В [233,234] методами NI исследовали механические свойства границ фаз и разнофазных сварных швов, полученных сваркой трением.…”

Section: разрушение в микро- субмикрои наношкалеunclassified

Наноиндентирование И Механические Свойства Материалов В Субмикро- И Наношкале. Недавние Результаты И Достижения (О Б З О Р)

Головин¹

2021

Физика Твердого Тела

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The review discusses the details of various materials mechanical behavior in submicro- and nanoscale. Significant advances in this scope result from the development of wide family of load based precise nanotesting techniques called nanoindentation. But nowadays, nanomechanical properties are studied not only by nanoindentation techniques in narrow sense, i.e. local loading of macro, micro and nanoscale objects. Nanomechanical load testing is discussed here within a wider scope employing precise deformation measurement with nanometer scale resolution caused by various types of low load application to the object under study including uniaxial compression or extension, shearing, bending or twisting, optionally accompanied by in situ monitoring sample microstructure using scanning and transmission electron microscopy and Laue microdiffraction technique. The main courses of experimental techniques development in recent ten years along with the results obtained using them in single, poly and nano crystalline materials, composites, films and coatings, amorphous solids and such biomaterials as tissues, living cells and macromolecules are described. Special attention is paid to deformation size effects and atomic mechanisms in nanoscale. This review is a natural continuation and development of the review published at Fiz.Tverd.Tela vol.50, issue 12, 2008 of the same author that discusses details of nanomechanical properties of solids. Current review includes wider range of nanomechanical testing concepts and recent achievements in the scope. The work was supported by RFBR grant for project #19-12-50235.

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“…Permittivity and permeability are two basic physical parameters of materials, which characterize the response of materials in electric, magnetic, or electromagnetic fields [1][2][3]. According to the sign of permittivity and permeability, materials are classified into four quadrants, including common materials, double-negative materials, mu-negative materials, and epsilon-negative materials, as shown in Figure 1 [4,5].…”

Section: Introductionmentioning

confidence: 99%

Epsilon-negative media from the viewpoint of materials science

et al. 2021

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A comprehensive review of the fundamentals and applications of epsilon-negative materials is presented in this paper. Percolative composites, as well as homogeneous ceramics or polymers, have been investigated to obtain the tailorable epsilon-negative properties. It's confirmed the anomalous epsilon-negative property can be realized in conventional materials. Meanwhile, from the perspective of materials science, the relationship between the negative permittivity and the composition and microstructure of materials has been clarified. It's demonstrated that the epsilon-negative performance is attributed to the plasmonic response of delocalized electrons within the materials and can be modulated by it. Moreover, the potential applications of epsilon-negative materials in electromagnetic interference shielding, laminated composites for multilayered capacitance, coil-less electric inductors, and epsilon-near-zero metamaterials are reviewed. The development of epsilon-negative materials has enriched the connotation of metamaterials and advanced functional materials, and has accelerated the integration of metamaterials and natural materials.

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Multifunctional magneto-polymer matrix composites for electromagnetic interference suppression, sensors and actuators

Cited by 75 publications

References 453 publications

Directional Electromagnetic Interference Shielding Based on Step-Wise Asymmetric Conductive Networks

Directional Electromagnetic Interference Shielding Based on Step-Wise Asymmetric Conductive Networks

Наноиндентирование И Механические Свойства Материалов В Субмикро- И Наношкале. Недавние Результаты И Достижения (О Б З О Р)

Epsilon-negative media from the viewpoint of materials science

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