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Among the van der Waals heterostructures, graphene/h-BN heterostructure is an appropriate candidate for 2D nanoelectronic devices. In this paper, using non-equilibrium molecular dynamics simulation approach, heat transport in bilayer…

材料科学 · 物理学 2022-05-31 M. Sadegh Alborzi , Ali Rajabpour

We present the results of molecular dynamics (MD) studies of hexane physisorbed onto graphite for eight coverages in the range $0.875 \le \rho \le 1.05$ (in units of monolayers). At low temperatures the adsorbate molecules form a uniaxially…

软凝聚态物质 · 物理学 2015-06-25 Cary L. Pint , M. W. Roth , Carlos Wexler

Graphene-based nanostructured systems and van-der-Waals heterostructures comprise a material class of growing technological and scientific importance. Joining materials with vastly different properties, polymer-graphene heterosystems…

Combining both vertical and in-plane two-dimensional (2D) heterostructures opens up the possibility to create an unprecedented architecture using 2D atomic layer building blocks. The thermal transport properties of such mixed…

材料科学 · 物理学 2020-07-16 Ting Liang , Ping Zhang , Man Zhou , Peng Yuan , Daoguo Yang

Conformational phases of a semiflexible off-lattice homopolymer model near an attractive substrate are investigated by means of multicanonical computer simulations. In our polymer-substrate model, nonbonded pairs of monomers as well as…

计算物理 · 物理学 2009-07-20 Monika Möddel , Michael Bachmann , Wolfhard Janke

The adsorption of fluorine, chlorine, bromine, and iodine diatomic molecules on graphene has been investigated using density functional theory with taking into account nonlocal correlation effects by means of vdW-DF approach. It is shown…

介观与纳米尺度物理 · 物理学 2010-09-15 A. N. Rudenko , F. J. Keil , M. I. Katsnelson , A. I. Lichtenstein

The key to achieve high-quality van der Waals heterostructure devices made of stacking various two-dimensional (2D) layered materials lies in the clean interface without bubbles and wrinkles. Although polymethylmethacrylate (PMMA) is…

材料科学 · 物理学 2015-11-25 T. Uwanno , Y. Hattori , T. Taniguchi , K. Watanabe , K. Nagashio

We demonstrate the temperature-mediated and completely reversible process of desorption-readsorption of water on a few layers of epitaxial graphene on a 4H-SiC(0001) substrate. We show that under ambient conditions water forms solid…

介观与纳米尺度物理 · 物理学 2012-04-17 Tim L. Burnett , Jack Patten , Olga Kazakova

We investigated the electronic and optoelectronic properties of vertical van der Waals heterostructure photodetectors using layered p type GaSe and n type InSe, with graphene as the transparent electrodes. Not only the photocurrent peaks…

介观与纳米尺度物理 · 物理学 2016-12-07 Faguang Yan , Dong Zhang , Wengang Luo , PingAn Hu , Qi Feng , Chao Shen , Xia Wei , Kai Chang , Kaiyou Wang

Understanding the adsorption and physical characteristics of supported lipid membranes is crucial for their effective use as model cell membranes. Their morphological and thermodynamic properties at the nanoscale have traditionally been…

软凝聚态物质 · 物理学 2024-03-28 H. Read , S. Benaglia , L. Fumagalli

The use of a novel three-dimensional graphene structure allows circumventing the limitations of the two-dimensional nature of graphene and its application in hydrogen absorption. Here we investigate hydrogen-bonding on monolayer graphene…

We calculate the properties of a graphene monolayer on the Ir(111) surface, using the model in which the periodicities of the two structures are assumed equal, instead of the observed slight mismatch which leads to a large superperiodic…

介观与纳米尺度物理 · 物理学 2015-05-19 R. Brako , D. Sokcevic , P. Lazic , N. Atodiresei

We present a structural analysis of the multi-layer graphene-4HSiC(000-1}) system using Surface X-Ray Reflectivity. We show for the first time that graphene films grown on the C-terminated (000-1}) surface have a graphene-substrate bond…

材料科学 · 物理学 2009-11-13 J. Hass , R. Feng , J. E. Millan-Otoya , X. Li , M. Sprinkle , P. N. First , C. Berger , W. A. de Heer , E. H. Conrad

The adsorption of an adenine molecule on graphene is studied using a first-principles van der Waals functional (vdW-DF) [Dion et al., Phys. Rev. Lett. 92, 246401 (2004)]. The cohesive energy of an ordered adenine overlayer is also…

This paper is an expanded edition of the rapid communication published several years ago by the author (Phys. Rev. B, v76, 041402(R), 2007) on the simulation of wetting transition of water on graphite, aiming to provide more details on the…

软凝聚态物质 · 物理学 2012-09-21 Xiongce Zhao

The absorption energy of atomic hydrogen at rotated graphene bilayers is studied using ab initio methods based on the density functional theory including van der Waals interactions. We find that, due to the surface corrugation induced by…

介观与纳米尺度物理 · 物理学 2017-10-06 Ivan Brihuega , Felix Yndurain

We report the results of molecular dynamics (MD) simulations of a complete monolayer of hexane physisorbed onto the basal plane of graphite. At low temperatures the system forms a herringbone solid. With increasing temperature, a solid to…

软凝聚态物质 · 物理学 2009-11-10 M. W. Roth , C. L. Pint , Carlos Wexler

Research on two-dimensional materials has expanded over the past two decades to become a central theme in condensed matter research today. Significant advances have been made in the synthesis and subsequent reassembly of these materials…

We report on the mechanism of energy transfer in van der Waals heterostructures of the two-dimensional semiconductor WS$_2$ and graphene with varying interlayer distances, achieved through spacer layers of hexagonal boron nitride (hBN). We…

介观与纳米尺度物理 · 物理学 2024-06-13 David Tebbe , Marc Schütte , K. Watanabe , T. Taniguchi , Christoph Stampfer , Bernd Beschoten , Lutz Waldecker

Van der Waals heterostructures obtained by artificially stacking two-dimensional crystals represent the frontier of material engineering, demonstrating properties superior to those of the starting materials. Fine control of the interlayer…

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