Heat transfer through metal-graphene interfaces

Wejrzanowski, Tomasz; Grybczuk, Mateusz; Wasiluk, M.; Kurzydłowski, Krzysztof J.

doi:10.1063/1.4927389

Cited by 22 publications

(11 citation statements)

References 58 publications

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“…Both Al and Au are expected to be physisorbed on the surface of graphene, which is theorized to results in a lower thermal boundary conductance compared to chemisorbed systems, such as Ni-and Ti-graphene. [5,6,10] From this, one can reasonably assume that the addition of functional groups that lead to a more hydrophilic surface, a typical indicator of improved adhesion between the metal film and graphene, should increase the thermal boundary conductance. The results of Fig.…”

Section: A Plasma Characterization and Processingmentioning

confidence: 99%

“…In other words, the thermal conductance (or resistance) across an interface depends on how easily free carriers pass through and/or vibrational modes couple across the interface of two materials. Not surprisingly then, the heat flow across graphene-metal interfaces is dependent upon the type of metal [5,6] and will be strongly affected by the interfacial roughness, [3,7] the presence of chemical defects, [8,9] the number of graphene layers [10], and the substrate on which graphene resides [11,12].…”

Section: Introductionmentioning

confidence: 99%

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Plasma-based chemical functionalization of graphene to control the thermal transport at graphene-metal interfaces

Walton

Foley

Hernández

et al. 2017

Surface and Coatings Technology

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The unique characteristics of graphene have generated much excitement due to its utility across a variety of applications. One of the principal issues inhibiting the development of graphene technologies pertains to difficulties in engineering high-quality metal contacts on graphene. In this regard, the thermal transport at the metal/graphene interface plays a significant role in the overall performance of devices. Here, we demonstrate the use of electron beam produced plasmas to chemically modify graphene and how these modifications can be used to tune the thermal transport s across metal-graphene interfaces. We show that the operating conditions of the plasma can be adjusted to control the character and quantity of chemical moieties at the interface. Typically, when changes in the surface chemistry favor an increase in adhesion between the graphene and metal, the thermal boundary conductance can be notably improved. Interestingly, the conventional approach of adding a titanium "wetting layer" to improve metal adhesion did not improve the thermal boundary conductance at gold contacts.

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Section: A Plasma Characterization and Processingmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Plasma-based chemical functionalization of graphene to control the thermal transport at graphene-metal interfaces

Walton

Foley

Hernández

et al. 2017

Surface and Coatings Technology

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“…Wejrzanowski et al. 57 showed that the thermal boundary conductance (TBC) of the metal graphene interface dropped significantly for the systems containing more than one layer of graphene. It was also concluded that the TBC for a single graphene layer was significantly higher for silver than for copper.…”

Section: Resultsmentioning

confidence: 99%

Mechanical and thermal properties of graphene–carbon nanotube-reinforced metal matrix composites: A molecular dynamics study

Sharma

Kumar

Chandra

2016

Journal of Composite Materials

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Single layer graphene sheets and carbon nanotubes have resulted in the development of new materials for a variety of applications. Though there are a large number of experimental and numerical studies related to these nanofillers, still there is a lack of understanding of the effect of geometrical characteristics of these nanofillers on their mechanical properties. In this study, molecular dynamics simulation has been used to assess this issue. Two different computational models, single layer graphene sheets–copper and carbon nanotube–copper composites have been examined to study the effect of nanofiller geometry on Young’s modulus and thermal conductivity of these nanocomposites. Effect of increase in temperature on Young’s modulus has also been predicted using molecular dynamics. The effect of nanofiller volume fraction ( Vf) on Young’s modulus and thermal conductivity has also been studied. Results of thermal conductivity obtained using molecular dynamics have been compared with theoretical models. Results show that with increase in Vf the Young’s modulus as well as thermal conductivity of single layer graphene sheets–Cu composites increases at a faster rate than that for carbon nanotube–Cu composite. For the same Vf, the Young’s modulus of single layer graphene sheets–Cu composite is higher than carbon nanotube–Cu composite.

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“…For example, TBC across Cu/single-layer graphene interfaces is about 10 MW m -2 K -1 [21] which is 1-3 order of magnitude lower than in pure metal [22], whereas the interfacial conducts between metal and c-axis for highly oriented pyrolytic graphite (HOPG) are similar to those of metals and diamond [23]. This fact is a huge obstacle in the production of composites based on metals with increased properties in which the effect of high in-plane conductivity of graphene can be used [24].…”

Section: Introductionmentioning

confidence: 98%

Thermal properties of multilayer graphene and hBN reinforced copper matrix composites

Kostecki

Cygan

Petrus

et al. 2019

J Therm Anal Calorim

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The unique properties of graphene make it a very attractive application, although there are still no commercial products in which graphene would play a key role. Good thermal conductivity is undoubtedly one of the attributes which can be easily used both in materials involving large monoatomic layers, that are very difficult to obtain, as well as multilayer graphene flakes, which have been commercially available on the market for several years. The article presents the results of tests on the characteristic thermal properties of composites with the addition of 2-15% of multilayer graphene (MLG) crystals. The motivation of the study was literature reports showing the possibility of increasing the thermal conductivity of composites with MLG participation in the copper matrix. Since the production of composites with increased properties is associated with obtaining a strong orientation of the flakes in the structure, composites with hBN flakes exhibiting significantly worse but also directional thermal properties were produced for comparison. The paper showed a strong influence of flake morphology on the possibility of creating a directional structure. The obtained Cu/MLG composites with the addition of only 2% MLG were characterized by an increase in the thermal conductivity coefficient of about 30% in relation to sinters without the participation of MLG.

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Heat transfer through metal-graphene interfaces

Cited by 22 publications

References 58 publications

Plasma-based chemical functionalization of graphene to control the thermal transport at graphene-metal interfaces

Plasma-based chemical functionalization of graphene to control the thermal transport at graphene-metal interfaces

Mechanical and thermal properties of graphene–carbon nanotube-reinforced metal matrix composites: A molecular dynamics study

Thermal properties of multilayer graphene and hBN reinforced copper matrix composites

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