Journal ArticleDOI
Graphite Nanoplatelet−Epoxy Composite Thermal Interface Materials
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TLDR
In this article, the performance of a few graphene layer n ∼ 4, with a thickness of ∼ 2 nm, was investigated for epoxy composites and it was shown that the G4 GNPs provide a thermal conductivity enhancement of more than 3000% (loading of ∼25 vol %).Abstract:
Natural graphite was intercalated, thermally exfoliated, and dispersed in acetone to prepare graphite nanoplatelets (GNPs, Gn) of controlled aspect ratio. Thermal conductivity measurements indicate that few graphene layer Gn, where n ∼ 4, with a thickness of ∼2 nm function as a very efficient filler for epoxy composites. When embedded in an epoxy matrix, the G4 GNPs provide a thermal conductivity enhancement of more than 3000% (loading of ∼25 vol %), and a thermal conductivity κ = 6.44 W/mK, which surpasses the performance of conventional fillers that require a loading of ∼70 vol % to achieve these values. We attribute the outstanding thermal properties of this material to a favorable combination of the high aspect ratio, two-dimensional geometry, stiffness, and low thermal interface resistance of the GNPs.read more
Citations
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Book ChapterDOI
Structure-property relationship in polymer-graphene composites
TL;DR: In this article , the basic properties of polymer/graphene composites are discussed and the effect of these properties on the final properties of composite is thoroughly explained citing examples from literature.
Book ChapterDOI
Graphene-Based Advanced Materials: Properties and Their Key Applications
TL;DR: In this paper, some novel discoveries and innovations closely related to the graphene-based advanced nanomaterials for the real-time applications have been reviewed in detail, especially in contest of high-performance polymer blends, nanocomposites for catalysis, water splitting and 3D printings.
Book ChapterDOI
Synthesis and Electrical Conducting Behavior of Graphite Nanoplatelet/Polymer Nanocomposites
Yan Geng,J. Li,Jang Kyo Kim +2 more
TL;DR: In this article, the synthesis of graphite nanoplatelets (GNPs) and the corresponding polymer-based composites containing GNPs are discussed. And the electrical conducting behavior of GNP polymer nanocomposites is discussed, as well as the important factors determining the percolation threshold and conducting mechanisms.
Journal ArticleDOI
Enhanced thermal diffusion in the vertical direction of flexible polyimide composite films with magnetically alignable h-BN platelets via ferrofluids hybridization
TL;DR: In this article , a facile approach is proposed to improve the anisotropic heat conduction of polyimide composite films containing hexagonal boron nitride (h -BN), thermally conductive filler with high anisotropy, via surface hybridization with ferrofluids as magnetic carrier source.
Journal ArticleDOI
Assessment of graphene-based polymers for sustainable wastewater treatment: Development of a soft computing approach.
Jun Cao,Jialing Li,Hasan Sh. Majdi,Binh Nguyen,Mohamed Amine Khadimallah,H. Elhosiny Ali,Hamid Assilzadeh +6 more
TL;DR: In this paper , the advantages and current limits of graphene-based composites are compared with those of other nanomaterials utilized for barrier purposes in order to emphasize difficult challenges for future study and prospective applications.
References
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TL;DR: This study reports an experimental study of a condensed-matter system (graphene, a single atomic layer of carbon) in which electron transport is essentially governed by Dirac's (relativistic) equation and reveals a variety of unusual phenomena that are characteristic of two-dimensional Dirac fermions.
Journal ArticleDOI
Graphene-based composite materials
Sasha Stankovich,Dmitriy A. Dikin,Geoffrey Dommett,K. Kohlhaas,Eric Zimney,Eric A. Stach,Richard D. Piner,SonBinh T. Nguyen,Rodney S. Ruoff +8 more
TL;DR: The bottom-up chemical approach of tuning the graphene sheet properties provides a path to a broad new class of graphene-based materials and their use in a variety of applications.
Journal ArticleDOI
Experimental observation of the quantum Hall effect and Berry's phase in graphene
TL;DR: In this paper, an experimental investigation of magneto-transport in a high-mobility single layer of Graphene is presented, where an unusual half-integer quantum Hall effect for both electron and hole carriers in graphene is observed.
Journal Article
Experimental Observation of Quantum Hall Effect and Berry's Phase in Graphene
TL;DR: An experimental investigation of magneto-transport in a high-mobility single layer of graphene observes an unusual half-integer quantum Hall effect for both electron and hole carriers in graphene.
Journal ArticleDOI
Electronic Confinement and Coherence in Patterned Epitaxial Graphene
Claire Berger,Claire Berger,Zhimin Song,Xuebin Li,Xiaosong Wu,Nate Brown,Cécile Naud,Didier Mayou,Tianbo Li,J. Hass,Alexei Marchenkov,Edward H. Conrad,Phillip N. First,Walt A. de Heer,Walt A. de Heer +14 more
TL;DR: In this paper, a single epitaxial graphene layer at the silicon carbide interface is shown to reveal the Dirac nature of the charge carriers, and all-graphene electronically coherent devices and device architectures are envisaged.