Electromagnetic properties of composites containing graphite nanoplatelets at radio frequency

Bellis, Giovanni De; Dinescu, Adrian; Santarelli, María Laura; Sarto, Maria Sabrina

doi:10.1016/j.carbon.2011.06.008

Cited by 78 publications

(43 citation statements)

References 23 publications

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“…The electrochemical measurements were carried out following the method reported in Ref. [27] with slight modification. Briefly, the electrode was fabricated by directly pressing the as-synthesized Co 3 C powders on a sheet of nickel foam at 50 MPa.…”

Section: Methodsmentioning

confidence: 99%

Mechanical alloying preparation of fullerene-like Co3C nanoparticles with high hydrogen storage ability

Gao

Wang

Yang

et al. 2012

International Journal of Hydrogen Energy

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Section: Methodsmentioning

confidence: 99%

Mechanical alloying preparation of fullerene-like Co3C nanoparticles with high hydrogen storage ability

Gao

Wang

Yang

et al. 2012

International Journal of Hydrogen Energy

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“…Graphene, a two-dimensional mono-atomic thick material with sp 2 hybridized carbon arrangement, has attracted extensive attention during the past decade. Its unique and outstanding electrical conductivity, mechanical properties, large surface area, low coefficient of thermal expansion, and very high aspect ratio make it very attractive for several potential applications in many different fields [10,11,12,13,14]. Moreover, graphene is biocompatible and it is a suitable substrate for biological/chemical functionalizations [15,16].…”

Section: Introductionmentioning

confidence: 99%

Zinc Oxide Nanorods-Decorated Graphene Nanoplatelets: A Promising Antimicrobial Agent against the Cariogenic Bacterium Streptococcus mutans

et al. 2016

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Nanomaterials are revolutionizing the field of medicine to improve the quality of life due to the myriad of applications stemming from their unique properties, including the antimicrobial activity against pathogens. In this study, the antimicrobial and antibiofilm properties of a novel nanomaterial composed by zinc oxide nanorods-decorated graphene nanoplatelets (ZNGs) are investigated. ZNGs were produced by hydrothermal method and characterized through field-emission scanning electron microscopy (FE-SEM), energy-dispersive X-ray spectroscopy (EDX) and X-ray diffraction (XRD) techniques. The antimicrobial activity of ZNGs was evaluated against Streptococcus mutans, the main bacteriological agent in the etiology of dental caries. Cell viability assay demonstrated that ZNGs exerted a strikingly high killing effect on S. mutans cells in a dose-dependent manner. Moreover, FE-SEM analysis revealed relevant mechanical damages exerted by ZNGs at the cell surface of this dental pathogen rather than reactive oxygen species (ROS) generation. In addition, inductively coupled plasma mass spectrometry (ICP-MS) measurements showed negligible zinc dissolution, demonstrating that zinc ion release in the suspension is not associated with the high cell mortality rate. Finally, our data indicated that also S. mutans biofilm formation was affected by the presence of graphene-zinc oxide (ZnO) based material, as witnessed by the safranin staining and growth curve analysis. Therefore, ZNGs can be a remarkable nanobactericide against one of the main dental pathogens. The potential applications in dental care and therapy are very promising.

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“…The results of these research studies show that the mechanical properties of graphene-epoxy nanocomposites enhanced when the graphene content reached a peak and then decreased [4,[11][12][13][14]. Also, the thermal, electrical and especially dielectric characteristics and electromagnetic shielding (EMS) of epoxy improved with graphene [3,[15][16][17]. Acceptable interface bonding and uniform dispersion were obtained by using appropriate functional and dispersing agents [4,[18][19][20].…”

Section: Introductionmentioning

confidence: 99%

“…Polymer nanocomposites have a unique combination of mechanical, thermal and electrical properties [1,2], which are dependent on the morphology, the homogenous dispersion, the types of fillers and matrices, and also the interface bonding between the matrix and the reinforcements [3,4]. These types of materials have been utilized in various fields of science and engineering such as photovoltaic cells, electronics, sensors, coatings and mechanical structures for many different applications such as aerospace industries, defense systems, medical equipment and even in daily life.…”

Section: Introductionmentioning

confidence: 99%

“…However, the high cross-link density makes these materials inherently brittle, leading to poor resistance to crack propagation [12][13][14]. Therefore, epoxy-graphene nanocomposites have attracted many researchers in recent years to improve their mechanical, thermal and electrical properties [3,4,[11][12][13][14][15][16][17]. In these studies, the uniform distribution of graphene in epoxy matrix and the improvement of its interface to achieve the effect of graphene filler have been investigated [4,[18][19][20].…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Mechanical properties and toughening mechanisms of epoxy/graphene nanocomposites

Eqra

Janghorban

Daneshmanesh

2014

Journal of Polymer Engineering

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Because of extraordinary physical, chemical and mechanical properties, graphene nanosheets (GNS) are suitable fillers for optimizing the properties of different polymers. In this research, the effect of GNS content (up to 1 wt.%) on tensile and flexural properties, morphology of fracture surface, and toughening mechanism of epoxy were investigated. Results of mechanical tests showed a peak for tensile and flexural strength of samples with 0.1 wt.% GNS such that the tensile and flexural strength improved by 13% and 3.3%, respectively. The Young's modulus and flexural modulus increased linearly with GNS content, although the behavior of the Young's modulus was more remarkable. Morphological investigations confirmed this behavior because the GNS dispersion in the epoxy matrix was uniform at lower contents and agglomerated at higher contents. Finally, microscopical observation showed that the major toughening mechanism of graphene-epoxy nanocomposites was crack path deflection, which changed the mirror fracture surface of the pure epoxy to rough surface.

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Electromagnetic properties of composites containing graphite nanoplatelets at radio frequency

Cited by 78 publications

References 23 publications

Mechanical alloying preparation of fullerene-like Co3C nanoparticles with high hydrogen storage ability

Mechanical alloying preparation of fullerene-like Co3C nanoparticles with high hydrogen storage ability

Zinc Oxide Nanorods-Decorated Graphene Nanoplatelets: A Promising Antimicrobial Agent against the Cariogenic Bacterium Streptococcus mutans

Mechanical properties and toughening mechanisms of epoxy/graphene nanocomposites

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