Electromagnetic interference shielding with laser induced molybdenum carbide-graphene paper

Zang, Xining; Xing, Di; Tang, Weijin; Lu, Longsheng; Xie, Yingxi; Teh, Kwok Siong; Sanghadasa, Mohan; Liu, Lin

doi:10.1016/j.matlet.2020.127784

Cited by 14 publications

(10 citation statements)

References 6 publications

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“…For instance, the values of SE T , SE A , and SE R of MC‐10 paper are 29.4, 26.5, and 2.9 dB, while those of MC‐4 paper are 7.4, 6.2, and 1.2 dB, respectively. Actually, SE A is larger than SE R , implying the absorption‐dominated shielding mechanism of MC papers, which is in accordance with reports for other EM shielding materials 18,32,33 . However, according to the power coefficients, as shown in Figure 7(c), for the MC‐10 paper, the actual amount of power shielded by reflection is similar to that due to absorption.…”

Section: Resultssupporting

confidence: 88%

“…Actually, SE A is larger than SE R , implying the absorption-dominated shielding mechanism of MC papers, which is in accordance with reports for other EM shielding materials. 18,32,33 However, according to the power coefficients, as shown in Figure 7(c), for the MC-10 paper, the actual amount of power shielded by reflection is similar to that due to absorption. This is ascribed to the SE A being calculated using A eff , as shown in Equation (8).…”

Section: Emi Shielding Performance Of MC Papersmentioning

confidence: 95%

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Simple approach to fabricate MXene/cellulose paper for electromagnetic interference shielding applications

Zhan

Yang

2021

J of Applied Polymer Sci

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A simple approach was developed to fabricate high-performance MXene/cellulose (MC)-based electromagnetic interference (EMI) shielding papers. The oriented MXene sheets located on one side of cellulose filter paper construct a continuous conductive layer, endowing the MC paper with high electrical conductivity (240.1 S/m) and excellent EMI shielding effectiveness (29.3 dB for 0.192-mm thickness) at an MXene content of 0.72 vol%. Moreover, the EMI shielding effectiveness of four stacked MC papers reached 40.5 dB. This result means that 99.9911% of the microwave radiation is attenuated, and 0.0089% is transmitted, through the four-piece MXene/cellulose filter papers. Therefore, MC paper has promising properties for excellent EMI shielding materials in current electronic devices.

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Section: Resultssupporting

confidence: 88%

Section: Emi Shielding Performance Of MC Papersmentioning

confidence: 95%

Simple approach to fabricate MXene/cellulose paper for electromagnetic interference shielding applications

Zhan

Yang

2021

J of Applied Polymer Sci

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“…Significantly, the radiation property of the serpentine dipole antenna is independent of deformation (e.g., bending and twisting in Figure 11C) [153] , which is important for wearable radiofrequency antennas. LIGbased antennas with large fracture strain and simple fabrication procedures show similar performance to traditional metal-based antennas [154] , thus greatly facilitating the great development of wearable radiofrequency antennas. 11D], thus enabling LIG to be an excellent electromagnetic shielding material.…”

Section: Electromagnetic Devicesmentioning

confidence: 99%

Laser-induced direct graphene patterning: from formation mechanism to flexible applications

2023

Soft Sci

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Laser-induced graphene (LIG), which is directly fabricated by laser carbonization of polymers, has gained much attention in recent years since its first discovery in 2014. Specifically, featuring native porosity, good mechanical properties, and excellent electrical/electrochemical properties, it is considered a promising material for flexible electronic devices. Meantime, LIG can be processed in the atmosphere within a few seconds, thereby significantly reducing the fabrication cost of graphene. Facilitated by these features, this methodology has received great development with worldwide efforts in the following years, including the formation mechanism of LIG, the diversity of laser sources (from infrared laser to ultraviolet laser), the diversity of carbon sources (thermoset polymers, thermoplastic polymers, and natural polymers), and property modulation of LIG (porosity, electrical property, hydrophilic/hydrophobic property, electrochemical property), along with the broad applications of LIG in various flexible electronic devices. Here, the recent advances in the mechanism studies and preparation methods of LIG are comprehensively summarized. The various technologies for the modification of LIG are reviewed. A thorough overview of typical LIG-based flexible electronic devices is presented. Finally, the current challenges and future directions are discussed.

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“…Similar results on MCG/LIG were obtained on fiber paper by various groups. 85,99 An isolated example was cardboard scribed with a 532 nm continuous wave laser with no pretreatment nor defocusing or multiple lasing, and indeed the result was not as good as the others reported in the literature. 100 Nanocellulose is an emerging bionanomaterial that comes in two primary forms: cellulose nanocrystals (CNC) and cellulose nanofibers (CNF).…”

Section: Bioderived Precursorsmentioning

confidence: 99%

“…Several types of water-soluble polymers, including gelatin, poly(ethylene oxide) (PEO), and poly(vinylpyrrolidone) (PVP) were mixed with the Mo ions for tests, and gelatin-based ink led to a much lower sheet resistance. Similar results on MCG/LIG were obtained on fiber paper by various groups. , …”

Section: Bioderived Precursorsmentioning

confidence: 99%

Bioderived Laser-Induced Graphene for Sensors and Supercapacitors

Bressi,

Dallinger,

Steksova

et al. 2023

ACS Appl. Mater. Interfaces

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The maskless and chemical-free conversion and patterning of synthetic polymer precursors into laser-induced graphene (LIG) via laser-induced pyrolysis is a relatively new but growing field. Bioderived precursors from lignocellulosic materials can also be converted to LIG, opening a path to sustainable and environmentally friendly applications. This review is designed as a starting point for researchers who are not familiar with LIG and/or who wish to switch to sustainable bioderived precursors for their applications. Bioderived precursors are described, and their performances (mainly crystallinity and sheet resistance of the obtained LIG) are compared. The three main fields of application are reviewed: supercapacitors and electrochemical and physical sensors. The key advantages and disadvantages of each precursor for each application are discussed and compared to those of a benchmark of polymer-derived LIG. LIG from bioderived precursors can match, or even outperform, its synthetic analogue and represents a viable and sometimes better alternative, also considering its low cost and biodegradability.

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Electromagnetic interference shielding with laser induced molybdenum carbide-graphene paper

Cited by 14 publications

References 6 publications

Simple approach to fabricate MXene/cellulose paper for electromagnetic interference shielding applications

Simple approach to fabricate MXene/cellulose paper for electromagnetic interference shielding applications

Laser-induced direct graphene patterning: from formation mechanism to flexible applications

Bioderived Laser-Induced Graphene for Sensors and Supercapacitors

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