中文
相关论文

相关论文: Graphene/Au(111) interaction studied by scanning t…

200 篇论文

Li metal has been deposited on the surface of a Ru(0001) single crystal containing patches of monolayer-thick epitaxial graphene islands. The use of low-energy electron microscopy and diffraction allowed us to {\em in situ} monitor the…

Graphene films grown by vapor deposition tend to be polycrystalline due to the nucleation and growth of islands with different in-plane orientations. Here, using low-energy electron microscopy, we find that micron-sized graphene islands on…

The structure of a graphene monolayer on Ir(111) has been investigated {\it in situ} in the growth chamber by surface x-ray diffraction including the specular rod, which allows disentangling the effect of the sample roughness from that of…

材料科学 · 物理学 2015-06-25 Fabien Jean , Tao Zhou , Nils Blanc , Roberto Felici , Johann Coraux , Gilles Renaud

Low-energy ion beam modification was proposed to create graphene on the top of the insulated diamond-like carbon films. In such low-temperature fabrication process the surface of the amorphous carbon could crystallize to graphene as a…

材料科学 · 物理学 2015-05-27 Savcho Tinchev

We have used low-energy electron microscopy and diffraction to examine the significance of lattice orientation in graphene growth on Cu(001). Individual graphene domains undergo anisotropic growth on the Cu surface, and develop into lens…

材料科学 · 物理学 2014-11-12 Joseph M. Wofford , Shu Nie , Konrad Thürmer , Kevin F. McCarty , Oscar D. Dubon

We use low-energy electron microscopy to investigate how graphene is removed from Ru(0001) and Ir(111) by reaction with oxygen. We find two mechanisms on Ru(0001). At short times, oxygen reacts with carbon monomers on the surrounding Ru…

材料科学 · 物理学 2010-12-14 Elena Starodub , Norman C. Bartelt , Kevin F. McCarty

We present a scanning tunneling microscopy (STM) study of native defects in graphene islands grown by ultra-high vacuum (UHV) decomposition of ethylene on Cu(111). We characterize these defects through a survey of their apparent heights,…

介观与纳米尺度物理 · 物理学 2016-01-20 S. M. Hollen , S. J. Tjung , K. R. Mattioli , G. A. Gambrel , N. M. Santagata , E. Johnston-Halperin , J. A. Gupta

Low-energy electron microscopy (LEEM) reveals a new mode of graphene growth on Ru(0001) in which Ru atoms are etched from a step edge and injected under a growing graphene sheet. Based on density functional calculations, we propose a model…

材料科学 · 物理学 2010-12-14 E. Loginova , S. Maier , I. Stass , N. C. Bartelt , P. J. Feibelman , M. Salmeron , K. F. McCarty

Graphene, a hexagonal sheet of $sp^2$-bonded carbon atoms, has extraordinary properties which hold immense promise for future nanoelectronic applications. Unfortunately, the popular preparation methods of micromechanical cleavage and…

介观与纳米尺度物理 · 物理学 2015-05-20 Andrew Zangwill , Dimitri D. Vvedensky

The rapid development of fabrication of functional high-quality graphene-like nanoribbons has increasingly reliant on integration of diverse nanofabrication platforms. The demand for innovative techniques to enable the exploration and…

介观与纳米尺度物理 · 物理学 2025-02-11 Yu Yao , Yu Wang , Shuangxiang Wu , Qiang Zhang , Yifan Wang , Hui Zhang

Graphene grown by chemical vapor deposition and supported on SiO2 and sapphire substrates was studied following controlled introduction of defects induced by 35 keV carbon ion irradiation. Changes in Raman spectra following fluences ranging…

We examine the aggregation behavior of AuNPs of different sizes on graphene as function of temperature using molecular dynamic simulations with Reax Force Field (ReaxFF). In addition, the consequences of such aggregation on the morphology…

应用物理 · 物理学 2023-08-29 J. Hingies Monisha , V. Vasumathi , Prabal K Maiti

Low energy alkali ion scattering is used to investigate the deposition of Au onto a single layer of graphene grown onto Ni(111) by chemical vapor deposition. The yield of 3.0 keV Na$^+$ singly scattered from Au as a function of coverage…

介观与纳米尺度物理 · 物理学 2018-12-26 Jory A. Yarmoff , Christopher Salvo

Graphene grown by chemical vapour deposition is transferred on top of flat gold nanoislands and characterized by scanning tunnelling microscopy (STM) and atomic force microscopy (AFM). Graphene bubbles are formed with lateral dimensions…

介观与纳米尺度物理 · 物理学 2016-09-15 András Pálinkás , György Molnár , Chanyong Hwang , László Péter Biró , Zoltán Osváth

We have carried out an ab initio study of the structural, electronic and magnetic properties of zigzag graphene nanoribbons on Cu(111), Ag(111) and Au(111). Both, H-free and H-terminated nanoribbons are considered revealing that the…

介观与纳米尺度物理 · 物理学 2013-05-29 Yan Li , Wei Zhang , Markus Morgenstern , Riccardo Mazzarello

We aim to understand how the van der Waals force between neutral adatoms and a graphene layer is modified by uniaxial strain and electron correlation effects. A detailed analysis is presented for three atoms (He, H, and Na) and graphene…

介观与纳米尺度物理 · 物理学 2016-05-11 Nathan S. Nichols , Adrian Del Maestro , Carlos Wexler , Valeri N. Kotov

Linear chains of about 10-13 carbon atoms were predicted to be the most favorable phase on different metal surfaces prior to graphene nucleation. However, unlike the graphene that widely studied both theoretically and experimentally, carbon…

介观与纳米尺度物理 · 物理学 2017-12-15 T. V. Pavlova , S. L. Kovalenko , K. N. Eltsov

With the help of the quantum chemistry methods we have investigated the nature of interlayer interactions between graphene fragments in different stacking arrangements (AA and AB). We found that the AB stacking pattern as the ground state…

介观与纳米尺度物理 · 物理学 2011-07-27 Julia Berashevich , Tapash Chakraborty

Graphene in spintronics has so far primarily meant spin current leads of high performance because the intrinsic spin-orbit coupling of its pi-electrons is very weak. If a large spin-orbit coupling could be created by a proximity effect, the…

材料科学 · 物理学 2013-05-14 D. Marchenko , A. Varykhalov , M. R. Scholz , G. Bihlmayer , E. I. Rashba , A. Rybkin , A. M. Shikin , O. Rader

We investigate the fine structure of graphene on iridium, which is a model for graphene weakly interacting with a transition metal substrate. Even the highest quality epitaxial graphene displays tiny imperfections, i.e. small biaxial…

材料科学 · 物理学 2013-02-25 Nils Blanc , Johann Coraux , Chi Vo-Van , Alpha T. N'Diaye , Olivier Geaymond , Gilles Renaud