Terahertz time domain spectroscopy of graphene and <scp>MXene</scp> polymer composites

Żerańska-Chudek, Klaudia; Łapińska, Anna; Siemion, Agnieszka; Jastrzębska, Agnieszka; Zdrojek, Mariusz

doi:10.1002/app.49962

Cited by 13 publications

(8 citation statements)

References 32 publications

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“…In polymer composites, high EMI shielding is usually related to electrical conductivity and the dominant reflection component [ 26 , 27 ]. However, in our previous works, we have already shown a selection of polymer composites with absorption as the main EMI SE component in the terahertz range [ 28 , 29 , 30 ]. The main shielding mechanism can change with the nanocarbon loading in the composite.…”

Section: Resultsmentioning

confidence: 99%

Graphene Infused Ecological Polymer Composites for Electromagnetic Interference Shielding and Heat Management Applications

et al. 2021

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In the age of mobile electronics and increased aerospace interest, multifunctional materials such as the polymer composites reported here are interesting alternatives to conventional materials, offering reduced cost and size of an electrical device packaging. We report a detailed study of an ecological and dual-functional polymer composite for electromagnetic interference (EMI) shielding and heat management applications. We studied a series of polylactic acid/graphene nanoplatelet composites with six graphene nanoplatelet loadings, up to 15 wt%, and three different flake lateral sizes (0.2, 5 and 25 μm). The multifunctionality of the composites is realized via high EMI shielding efficiency exceeding 40 dB per 1 mm thick sample and thermal conductivity of 1.72 W/mK at 15 wt% nanofiller loading. The EMI shielding efficiency measurements were conducted in the microwave range between 0.2 to 12 GHz, consisting of the highly relevant X-band (8–12 GHz). Additionally, we investigate the influence of the nanofiller lateral size on the studied physical properties to optimize the studied functionalities per given nanofiller loading.

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Section: Resultsmentioning

confidence: 99%

Graphene Infused Ecological Polymer Composites for Electromagnetic Interference Shielding and Heat Management Applications

et al. 2021

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“…Carbonized cellulose microsphere@void@MXene composite films, [163] MXene-decorated polymer foam beads, [164] PDMS/MXene, [165] PVA/MXene, [166] carbon foams/trans-1,4-polyisoprene/MXene layer, [167] and graphene/MXene phases/polymer [168] have been reported, which showed the use of MXene phases as a filler in the polymer matrix. Apart from MXene, ternary composites with graphene, silicon carbide nanowires, a PVDF matrix with an EMI shielding effectiveness of 32.5 dB at 1.2 mm thickness in the X-band [113] and a SiCincorporated composite of mesocarbon microbeads (MCMB) and MWCNTs with polyacrylonitrile (PAN) have been reported to have an EMI shielding effectiveness of 67 dB at a frequency of 10.3 GHz, as well as high thermal stability and conductivity, [169] and 3D hybridized carbon nanostructure CNT/CNF/ERG hybrid foams fabricated using the chemical vapor deposition (CVD) method had an EMI shielding effectiveness of 55.4 dB in the X-band.…”

Section: Miscellaneous Compositesmentioning

confidence: 99%

Electromagnetic interference cognizance and potential of advanced polymer composites toward electromagnetic interference shielding: A review

Devi

Ray

2022

Polymer Engineering & Sci

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The exigency of electromagnetic shielding is derived from the electromagnetic pollution caused by the widespread use of electronic devices. Electromagnetic waves from innumerable electrical sources radiate in the atmosphere and generate electromagnetic interference (EMI). Such EMI can interrupt other instruments and threaten human health. Therefore, future designs of electronic devices, regardless of their size and use, necessitate advanced electromagnetic shielding materials and techniques that can limit or completely block the transmission of electromagnetic waves in the atmosphere. The purpose of this review is to investigate the use of polymer-based composites for EMI shielding and study their configurations. The objectives of this study and the societal and environmental impacts of electromagnetic waves are discussed in detail.The available reports, the worldwide contribution by researchers in the field, the limitations of the available materials, and the inventions required have directed our interest toward this area of research. The review summarizes EMI shielding cognizance, current research gaps, and future recommendations.

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“…The extremely delocalized nature of terahertz surface plasmonic waves has previously been a source of concern. Although recent discoveries have shown that the confinement of plasmonic waves and their propagating mechanism in the terahertz band can be manipulated by designing surface structures with different material shapes [3].…”

Section: Introductionmentioning

confidence: 99%

2D MXene Ti3C2Tx Enhanced Plasmonic Absorption in Metasurface for Terahertz Shielding

Ullah¹,

Al‐Hasan²,

Mabrouk³

et al. 2023

Computers, Materials &Amp; Continua

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With the advancement of technology, shielding for terahertz (THz) electronic and communication equipment is increasingly important. The metamaterial absorption technique is mostly used to shield electromagnetic interference (EMI) in THz sensing technologies. The most widely used THz metamaterial absorbers suffer from their narrowband properties and the involvement of complex fabrication techniques. Materials with multifunctional properties, such as adjustable conductivity, broad bandwidth, high flexibility, and robustness, are driving future development to meet THz shielding applications. In this article, a theoretical simulation approach based on finite difference time domain (FDTD) is utilized to study the absorption and shielding characteristics of a two-dimensional (2D) MXene Ti 3 C 2 T x metasurface absorber in the THz band. The proposed metamaterial structure is made up of a square-shaped array of MXene that is 50 nm thick and is placed on top of a silicon substrate. The bottom surface of the silicon is metalized with gold to reduce the transmission and ultimately enhance the absorption at 1-3 THz. The symmetric adjacent space between the MXene array results in a widening of bandwidth. The proposed metasurface achieves 96% absorption under normal illumination of the incident source and acquires an average of 25 dB shielding at 1 THz bandwidth, with the peak shielding reaching 65 dB. The results show that 2D MXene-based stacked metasurfaces can be proven in the realization of low-cost devices for THz shielding and sensing applications.

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Terahertz time domain spectroscopy of graphene and MXene polymer composites

Cited by 13 publications

References 32 publications

Graphene Infused Ecological Polymer Composites for Electromagnetic Interference Shielding and Heat Management Applications

Graphene Infused Ecological Polymer Composites for Electromagnetic Interference Shielding and Heat Management Applications

Electromagnetic interference cognizance and potential of advanced polymer composites toward electromagnetic interference shielding: A review

2D MXene Ti3C2Tx Enhanced Plasmonic Absorption in Metasurface for Terahertz Shielding

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