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Diffraction of atoms from surfaces provides detailed insights into structures, interactions, and dynamical processes. However, currently the method is limited to measurements in reflection - diffraction through materials has only been…

The interlayer gallery between two adjacent sheets of van der Waals materials is expected to modify properties of atoms and molecules confined at the atomic interfaces. Here, we directly image individual hydrogen atom intercalated between…

Mesoscale and Nanoscale Physics · Physics 2018-02-14 Wen-Xiao Wang , Yi-Wen Wei , Si-Yu Li , Xinqi Li , Xiaosong Wu , Ji Feng , Lin He

We propose a mechanism to control the interaction between adsorbates on graphene. The interaction between a pair of adsorbates---the change in adsorption energy of one adsorbate in the presence of another---is dominated by the interaction…

Mesoscale and Nanoscale Physics · Physics 2013-09-13 Dmitry Solenov , Chad Junkermeier , Thomas L. Reinecke , Kirill A. Velizhanin

Compressed hydrogen passes through a series of layered structures in which the layers can be viewed as distorted graphene sheets. The electronic structures of these layered structures can be understood by studying simple model systems- an…

Materials Science · Physics 2013-05-22 Ivan I. Naumov , R. E. Cohen , Russell J. Hemley

An electrodynamic response of graphene to a strong electromagnetic radiation is considered. A hot electron model (HEM) is introduced and a corresponding system of nonlinear equations is formulated. Solutions of this system are found and…

Mesoscale and Nanoscale Physics · Physics 2019-09-18 S. A. Mikhailov

Chemical adsorption of atomic hydrogen on a negatively charged single layer graphene sheet has been analyzed with ab-initio Density Functional Theory calculations. We have simulated both finite clusters and infinite periodic systems to…

Materials Science · Physics 2015-05-18 J. A. Verges , P. L. de Andres

Diffusion of atomic and molecular hydrogen in the interstitial space between graphite sheets has been studied by molecular dynamics simulations. Interatomic interactions were modeled by a tight-binding potential fitted to density-functional…

Materials Science · Physics 2011-08-12 Carlos P. Herrero , Rafael Ramirez

This study deals with the understanding of hydrogen atom scattering from graphene, a process critical for exploring C-H bond formation and energy transfer during the atom surface collision. In our previous work (J.Chem.Phys \textbf{159},…

Graphene modifications with oxygen or hydrogen are well known in contrast to carbon attachment to the graphene lattice. The chemical modification of graphene sheets with aromatic diazonium ions (carbon attachment) is analyzed by confocal…

Materials Science · Physics 2010-06-23 Fabian M. Koehler , Arnhild Jacobsen , Klaus Ensslin , Christoph Stampfer , Wendelin J. Stark

We calculate the interaction energy and force between atoms and molecules and single-walled carbon nanotubes described by the Dirac model of graphene. For this purpose the Lifshitz-type formulas adapted for the case of cylindrical geometry…

Materials Science · Physics 2015-05-30 Yu. V. Churkin , G. L. Klimchitskaya , A. B. Fedortsov , V. A. Yurova

The process of hydrogen desorption from graphane (graphene sheet saturated by hydrogen adsorbed from both sides) has been studied using the method of molecular dynamics. The temperature dependences of the time of desorption onset for…

Mesoscale and Nanoscale Physics · Physics 2010-01-08 L. A. Openov , A. I. Podlivaev

Graphane is a two-dimensional system consisting of a single planar layer of fully saturated (sp$^3$ hybridization) carbon atoms with H atoms attached to them in an alternating pattern (up and down with relation to the plane defined by the…

Materials Science · Physics 2009-03-03 Sergio B. Legoas , Pedro A. S. Autreto , Marcelo Z. S. Flores , Douglas S. Galvao

The interaction energy between a water molecule and graphitic structured clusters terminated by hydrogen atoms is analyzed by ab initio methods and decomposed into electrostatic, induction, Pauli repulsion, and correlation energy…

Computational Physics · Physics 2008-01-21 D. J. Wallace Geldart , I. Wayan Sudiarta , Glen Lesins , Petr Chylek

The penetration of atomic hydrogen through defect-free graphene was generally predicted to have a barrier of at least several eV, which is much higher than the 1 eV barrier measured for hydrogen-gas permeation through pristine graphene…

Materials Science · Physics 2023-07-26 Wenqi Xiong , Weiqing Zhou , Pengzhan Sun , Shengjun Yuan

The paper presents evidence of a rather strong correlation of odd electrons in the singlet state of graphene. Due to the correlation, the chemical modification of graphene can be considered following a certain algorithmic computational…

Materials Science · Physics 2012-01-10 E. F. Sheka , N. A. Popova

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 report fast atom diffraction through single-layer graphene using hydrogen atoms at kinetic energies from 150 to 1200 eV. High-resolution images reveal overlapping hexagonal patterns from coexisting monocrystalline domains. Time-of-flight…

Graphene is the extreme material for molecular sensory and hydrogen storage applications because of its two-dimensional geometry and unique structure-property relationship. In this Letter, hydrogenation of graphene is discussed in the…

Materials Science · Physics 2010-02-10 Zhiping Xu , Kun Xue

We predict the stability of a new extended two-dimensional hydrocarbon on the basis of first-principles total energy calculations. The compound that we call graphane is a fully saturated hydrocarbon derived from a single graphene sheet with…

Materials Science · Physics 2007-05-23 Jorge O. Sofo , Ajay S. Chaudhari , Greg D. Barber

Understanding the interactions of ambient molecules with graphene and adjacent dielectrics is of fundamental importance for a range of graphene-based devices, particularly sensors, where such interactions could influence the operation of…

Mesoscale and Nanoscale Physics · Physics 2015-11-30 Eric J. Olson , Rui Ma , Tao Sun , Mona A. Ebrish , Nazila Haratipour , Kyoungmin Min , Narayana R. Aluru , Steven J. Koester