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Author Baik, Sung-Il ♦ Ma, Lulu ♦ Kim, Yoon-Jun ♦ Li, Bo ♦ Liu, Mingjie ♦ Isheim, Dieter ♦ Yakobson, Boris I. ♦ Ajayan, Pulickel M. ♦ Seidman, David N.
Source World Health Organization (WHO)-Global Index Medicus
Content type Text
Publisher Wiley-VCH
File Format HTM / HTML
Language English
Difficulty Level Medium
Subject Domain (in DDC) Technology ♦ Medicine & health
Abstract The properties and growth processes of graphene are greatly influenced by the elemental distributions of impurity atoms and their functional groups within or on the hexagonal carbon lattice. Oxygen and hydrogen atoms and their functional molecules (OH, CO, and $CO_{2})$ positions' and chemical identities are tomographically mapped in three dimensions in a graphene monolayer film grown on a copper substrate, at the atomic part-per-million (atomic ppm) detection level, employing laser assisted atom-probe tomography. The atomistic plan and cross-sectional views of graphene indicate that oxygen, hydrogen, and their co-functionalities, OH, CO, and $CO_{2},$ which are locally clustered under or within the graphene lattice. The experimental 3D atomistic portrait of the chemistry is combined with computational density-functional theory (DFT) calculations to enhance the understanding of the surface state of graphene, the positions of the chemical functional groups, their interactions with the underlying Cu substrate, and their influences on the growth of graphene.
Description Country affiliation: United States
Author Affiliation: Baik SI ( Department of Materials Science and Engineering, Northwestern University, Evanston, IL, 60208, USA.); Ma L ( Northwestern University Center for Atom-Probe Tomography (NUCAPT), Evanston, 60208, IL, USA.); Kim YJ ( Department of Materials Science and NanoEngineering, Rice University, Houston, TX, 77005, USA.); Li B ( Department of Materials Science and Engineering, Northwestern University, Evanston, IL, 60208, USA.); Liu M ( Department of Materials Science and Engineering, Inha University, Incheon, 402-751, KOREA.); Isheim D ( Department of Materials Science and NanoEngineering, Rice University, Houston, TX, 77005, USA.); Yakobson BI ( Department of Materials Science and NanoEngineering, Rice University, Houston, TX, 77005, USA.); Ajayan PM ( Department of Materials Science and Engineering, Northwestern University, Evanston, IL, 60208, USA.); Seidman DN ( Northwestern University Center for Atom-Probe Tomography (NUCAPT), Evanston, 60208, IL, USA.)
ISSN 16136810
Educational Role Student ♦ Teacher
Age Range above 22 year
Educational Use Reading ♦ Research ♦ Self Learning
Interactivity Type Expositive
Education Level UG and PG
Learning Resource Type Article
Publisher Date 2015-11-25
Publisher Place Germany
e-ISSN 16136829
Journal Small
Volume Number 11
Issue Number 44


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Source: WHO-Global Index Medicus