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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Journal ArticleDOI
Review on Thermal Conductivity of the Graphene Reinforced Resin Matrix Composites
Haiyun Zhang,Wang Danyong,Juncong Liu,Wei Huazhen,Liu Fangbiao,Xu Jingli,Shuhu Li,Qin Zhenming,Guo Jianfen,Wang Ronghui,Jia Huamin,Zhang Jianqin,Yadong Liu +12 more
DissertationDOI
Performance enhancement of two-phase closed thermosyphon via carbon-based surface functionalization
TL;DR: In this article, a two-phase closed thermosyphon (TPCT) was investigated with the objective of enhancing the thermal performance of a TPCT by exploring various innovative techniques through surface functionalization.
Dissertation
Molecular-Level Modeling of Thermal Transport Mechanisms within Carbon Nanotube/Graphene-based Nanostructure-enhanced Phase Change Materials
TL;DR: In this article, the mechanisms of nanoscale thermal transport within nanoparticle suspensions (nanofluids) and nanostructure-enhanced phase change materials (NePCM) are investigated using molecular dynamics (MD) simulations.
Dissertation
Atomistic Simulation of Graphene-Polyurethane Nanocomposite for Use in Ballistic Applications
TL;DR: In this article, the authors propose a framework for computing the second and third order elasticity of polyurethane, which is based on the nonlinear elastic theory of graphite.
Journal ArticleDOI
Thermal conductivity and mechanical durability of graphene composite films containing polymer-filled connected multilayer graphene patterns
TL;DR: In this paper , a thermoplastic polymers were infiltrated into connected multilayer graphene (MLG) patterns, and the connected MLG patterns attained high inplane thermal conductivity (κx), while the polymers prevented tearing of the graphene.
References
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Journal ArticleDOI
Two-dimensional gas of massless Dirac fermions in graphene
Kostya S. Novoselov,A. K. Geim,Sergey V. Morozov,Da Jiang,Mikhail I. Katsnelson,Irina V. Grigorieva,S. V. Dubonos,A. A. Firsov +7 more
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.