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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On the Multi-Functional Behavior of Graphene-Based Nano-Reinforced Polymers.
Konstantina Zafeiropoulou,C. Kostagiannakopoulou,Anna Geitona,Xenia Tsilimigkra,G. Sotiriadis,Vassilis Kostopoulos +5 more
TL;DR: In this article, the impact performance and the concluded thermal conductivity of epoxy resin reinforced by layered Graphene nano-platelets (GNPs) were evaluated by using the three-roll mill technique.
Journal Article
Viscoelastic and Nanohardness Behaviour of Nano Particles Filled Epoxy Resin Composites
TL;DR: In this paper, a polymer matrix has been modified by nanofillers for dynamic mechanical and nanohardness analysis, and the results showed that the elastic modulus of both nanocomposites increased with increase of nanocorrelations due to change of morphology.
Journal ArticleDOI
Hierarchical Hybrid of Few-Layer Graphene upon Tungsten Monocarbide Nanowires: Controlled Synthesis and Electrocatalytic Performance for Methanol Oxidation
Hongmei Zheng,Yanan Guo,Yong Zhang,Dongsheng Geng,Mohammad Norouzi Banis,Ruying Li,Mei Cai,Xueliang Sun,Jiaqin Liu,Yucheng Wu +9 more
TL;DR: In this article, a hierarchical hybrid of few-layer graphene (FLG)/tungsten monocarbide nanowires has been achieved by carbonization of metal tungsten nanowsires under atmospheric pressure chemical vapor deposition.
Journal ArticleDOI
A review: Impact of surface treatment of nanofillers for improvement in thermo mechanical properties of the epoxy based nanocomposites
TL;DR: In this article , a review of the discussion about epoxy composites using various nanofillers (modified) has been discussed and the effect of various parameters such as varying temperatures, concentrations, and treatment time of the modification of the nano-fillers were investigated.
Patent
Magnetothermal pump device and method of operation
David Gray,John Moore Coggin +1 more
TL;DR: In this article, a thermally induced switching between open and closed states of a magnetic switch is used to generate mechanical oscillations. But the authors do not consider the effect of temperature on the magnetic moment of the switch.
References
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Journal ArticleDOI
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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
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