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Step junctions are often present in layered materials, i.e. where single-layer regions meet multi-layer regions, yet their effect on thermal transport is not understood to date. Here, we measure heat flow across graphene junctions (GJs)…

The morphology and the chemical characteristics of graphene nanoplatelets are important parameters to define the potential of these particles in various applications. In this paper we firstly conducted a market analysis to identify…

Titanium (Ti) is an adhesion and contact metal commonly used in nanoelectronics and two-dimensional (2D) materials research. However, when Ti is deposited on graphene (Gr), we obtain dramatically different film morphology depending on the…

Thermoelectric materials, which can convert waste heat to electricity or be utilized as solid-state coolers, hold promise for sustainable energy applications. However, optimizing thermoelectric performance remains a significant challenge…

Mesoscale and Nanoscale Physics · Physics 2025-04-25 Yang Xiao , Yuqi Liu , Zihan Tan Bohan Zhang , Ke Xu , Zheyong Fan , Shunda Chen , Shiyun Xiong , Haikuan Dong

Two-dimensional materials are characterised by a number of unique physical properties which can potentially make them useful to a wide diversity of applications. In particular, the large thermal conductivity of graphene and hexagonal boron…

We theoretically show how structural modifications and controlling quantum coherency can enhance linear and nonlinear thermoelectric performance in graphene nanostructure heat engines. Although graphene has emerged as a promising material…

Mesoscale and Nanoscale Physics · Physics 2024-05-24 Yuga Kodama , Nobuhiko Taniguchi

We propose a type of thermal interface materials incorporating insulating nanowires with partially metallic coating in insulating polymer matrix.Large thermal conductivity can be obtained due to thermal percolation while the electrical…

Applied Physics · Physics 2024-06-19 Jinxin Zhong , Qing Xi , Jixiong He , Jun Liu , Jun Zhou

We investigated the influence of thickness reduction on the transport properties of graphite microflakes. Using oxygen plasma etching we decreased the thickness of highly oriented pyrolytic graphite (HOPG) microflakes from $\sim 100$~nm to…

Cross-sectional transmission electron microscopy (TEM) is used to characterize an amorphous layer observed at the interface in graphite and graphene films grown via thermal decomposition of C-face 4H-SiC. The amorphous layer does not to…

Materials Science · Physics 2015-05-28 R. Colby , M. L. Bolen , M. A. Capano , E. A. Stach

We report the results of an experimental study of thermal and magnetic properties of nanostructured ferrimagnetic iron oxide composites with graphene and graphite fillers synthesized via the current activated pressure assisted…

Materials Science · Physics 2017-10-19 S. Ramirez , K. Chan , R. Hernandez , E. Recinos , E. Hernandez , R. Salgado , A. G. Khitun , J. E. Garay , A. A. Balandin

In the quest for better energy storage solutions, the role of designing effective electrodes is crucial. Previous research has shown that using materials like single-side fluorinated graphene can improve the stability of ion insertion in…

Materials Science · Physics 2024-08-28 Yu-Hsiu Lin , Jose L. Mendoza-Cortes

The allegedly unconventional superconducting phase of magic-angle twisted bilayer graphene (MATBG)1 has been predicted to possess extraordinary thermal properties, as it is formed from a highly diluted electron ensemble with both a…

Superconductivity · Physics 2022-09-07 G. Di Battista , P. Seifert , K. Watanabe , T. Taniguchi , K. C. Fong , A. Principi , D. K. Efetov

The thermal properties of an epoxy-based binary composites comprised of graphene and copper nanoparticles are reported. It is found that the "synergistic" filler effect, revealed as a strong enhancement of the thermal conductivity of…

We report on the fabrication and electrical characterization of few-layer graphene (FLG) devices coated with a ferroelectric polymer layer of poly(vinylidene fluoride/trifluoroethylene) [P(VDF/TrFE)]. Highly stable and reliable resistance…

Materials Science · Physics 2009-04-16 Yong-Joo Doh , Gyu-Chul Yi

The poor performance of copper interconnects at the nanometer scale calls for new material solutions for continued scaling of integrated circuits. We propose the use of three dimensional time-reversal-invariant topological insulators (TIs),…

Mesoscale and Nanoscale Physics · Physics 2018-06-14 Timothy M. Philip , Mark R. Hirsbrunner , Moon Jip Park , Matthew J. Gilbert

Thermal properties of graphene display peculiar characteristics associated to the two-dimensional nature of this crystalline membrane. These properties can be changed and tuned in the presence of applied stresses, both tensile and…

Materials Science · Physics 2018-06-07 Carlos P. Herrero , Rafael Ramirez

We present two different techniques for achieving low resistance ($<$20 n$\rm \Omega$) contacts between copper and aluminium at cryogenic temperatures. The best method is based on gold plating of the surfaces in an e-beam evaporator…

We present thermal conductivity measurements performed in three short-period (GaAs)_9(AlAs)_5 superlattices. The samples were grown at different temperatures, leading to different small scale roughness and broadening of the interfaces. The…

Materials Science · Physics 2009-10-08 J. -Y. Duquesne

We have observed periodically repeated steps in the resistance vs. temperature characteristics of doped Highly Oriented Pyrolytic Graphite and exfoliated doped multi-layer graphene. The observations consist of a series of regularly spaced…

Superconductivity · Physics 2013-07-03 Grover Larkins , Yuriy Vlasov , Kiar Holland

In low-dimensional systems, the combination of reduced dimensionality, strong interactions, and topology has led to a growing number of many-body quantum phenomena. Thermal transport, which is sensitive to all energy-carrying degrees of…

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