Multifunctional architectured materials for electromagnetic absorption

Bollen, Pierre; Quiévy, Nicolas; Huynen, Isabelle; Bailly, Christian; Detrembleur, Christophe; Thomassin, Jean‐Michel; Pardoen, Thomas

doi:10.1016/j.scriptamat.2012.05.011

Cited by 55 publications

(23 citation statements)

References 16 publications

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“…From the Debye theory of dielectrics, it is known that the permittivity of a dielectric material increases with increasing electrical conductivity. 17,18 The relationship between the imaginary part of permittivity and electrical conductivity was very consistent with the theory in this study. The imaginary part of permittivity represents the dielectric loss ability of materials.…”

Section: Effect Of Concentration On Electrical Conductivitysupporting

confidence: 88%

Concentration-related microwave heating processes: electromagnetic interference of Maillard reaction substrates (glucose and lysine)

et al. 2017

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a Glucose and lysine are important substrates involved in the Maillard reaction. The lack of studies on their electromagnetic properties has made it impossible to understand the influence of electromagnetic properties on the microwave heating process, and has hindered the application of the Maillard reaction in the microwave field. In this study, the electromagnetic properties of glucose, lysine solution and their 1 : 1 mixture were determined at frequencies of 1.7-2.6 GHz. The results show that the dielectric loss factors gradually increased. Reflection loss gradually decreased with concentration in the order of glucose > mixture > lysine. The heating rates gradually increased at low concentrations (#5%) and slowly changed at high concentrations ($10%). These results indicate that the effect of electromagnetic properties on the heating rate is related to concentration. The heating rates depended on the dielectric properties at low concentrations (#5%), whereas microwave-absorption properties dominated at high concentrations ($10%).

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Section: Effect Of Concentration On Electrical Conductivitysupporting

confidence: 88%

Concentration-related microwave heating processes: electromagnetic interference of Maillard reaction substrates (glucose and lysine)

et al. 2017

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“…To obtain improved EM absorption property, a low real part of permittivity and an appropriately high electrical conductivity (around 1 S/m) are needed. 11,12 EM absorbing materials usually consist of an electrically insulating matrix combined with electrically lossy phase. [13][14][15][16] Hybrid structure naturally emerges as the solution when seemingly antagonist properties must be combined.…”

Section: Introductionmentioning

confidence: 99%

High‐Temperature Electromagnetic Wave Absorption Properties of ZnO/ZrSiO₄ Composite Ceramics

Kong

Yin

et al. 2013

J. Am. Ceram. Soc.

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Owing to the widespread presence of electromagnetic interferences, it is necessary to develop new materials with excellent high‐temperature electromagnetic wave (EM) absorption properties. In the present work, ZnO is infiltrated into porous ZrSiO4 substrates to form ZnO/ZrSiO4 composite ceramics using sol‐gel process. The doping of aluminum results in the improvement of electrical conductivity and the significant change in the morphology of ZnO. With the increase in environment temperature during measurement, the permittivity of the composite ceramics increases first and then decreases dramatically, which is attributed to the change in conductive loss. The electrical conductivity increases with increasing measurement temperature. However, the concentration of oxygen vacancies decreases under air atmosphere when the measurement temperature increases continuously, which results in the reduction in conductivity. Therefore, permittivities of the undoped and doped ceramics measured at 673 K are higher than the ones at the other temperatures. The composite ceramics maintain a relatively high EM absorption coefficient, low reflection coefficient (RC), and wide effective absorption bandwidth at environment temperatures up to 773 K. As a result, we conclude that the ZnO/ZrSiO4 composite ceramics exhibit a promising prospect as a kind of high‐temperature EM absorbing material.

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“…A sandwich structure with a honeycomb core filled with a carbon‐nanotube (CNT) reinforced polymer foam, and with skin made of a glass‐fiber‐reinforced composite (GFRC), was developed by Bollen et al to enhance the electromagnetic absorption of a honeycomb sandwich with good mechanical properties. Several routes can be followed to process the CNT‐filled‐foam‐in‐a‐honeycomb core, as shown in Figure .…”

Section: Modern Honeycombsmentioning

confidence: 99%

“…a) The schematic of process for manufacturing architectured sandwich panels from left to right. b) The corresponding micrographs for the materials and structures at each stage . (Reproduced with permission .…”

Section: Modern Honeycombsmentioning

confidence: 99%

Sandwich Structures with Prismatic and Foam Cores: A Review

Xiong

Mousanezhad³

et al. 2018

Adv Eng Mater

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This article provides a comprehensive review of recent research efforts on the development and characterization of sandwich structures with corrugated, honeycomb, and foam cores. The topics discussed in this review article include aspects of core-face bonding and reinforcement, enhancement of core mechanical properties and panel performance (including the role of structural hierarchy), and multifunctional advantages offered by different core constructions. In addition, the review discusses potential applications, including in morphing wing design, impact resistance, and ultralightweight applications. Future research directions are discussed.

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Multifunctional architectured materials for electromagnetic absorption

Cited by 55 publications

References 16 publications

Concentration-related microwave heating processes: electromagnetic interference of Maillard reaction substrates (glucose and lysine)

Concentration-related microwave heating processes: electromagnetic interference of Maillard reaction substrates (glucose and lysine)

High‐Temperature Electromagnetic Wave Absorption Properties of ZnO/ZrSiO₄ Composite Ceramics

Sandwich Structures with Prismatic and Foam Cores: A Review

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Multifunctional architectured materials for electromagnetic absorption

Cited by 55 publications

References 16 publications

Concentration-related microwave heating processes: electromagnetic interference of Maillard reaction substrates (glucose and lysine)

Concentration-related microwave heating processes: electromagnetic interference of Maillard reaction substrates (glucose and lysine)

High‐Temperature Electromagnetic Wave Absorption Properties of ZnO/ZrSiO4 Composite Ceramics

Sandwich Structures with Prismatic and Foam Cores: A Review

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Product

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High‐Temperature Electromagnetic Wave Absorption Properties of ZnO/ZrSiO₄ Composite Ceramics