Journal ArticleDOI
EELS analysis of vacuum arc-deposited diamond-like films
TLDR
In this paper, an amorphous diamond-like carbon film was analyzed and the fraction of sp2-bonded carbon was quantified and found to be of the order of 15% and it was not possible to determine if the sp2 carbon was on the surface or throughout the bulk.Abstract:
Electron energy-loss spectroscopy measurements have been made on amorphous diamond-like carbon films produced by condensing the plasma stream from a filtered vacuum arc. The results are compared with spectra from diamond, graphitized carbon and amorphous carbon. Although the energy-loss spectra reveal the presence of a small quantity of sp2-bonded material in the diamond-like film, the high plasmon frequency and shape of the K-edge show that the material is essentially an amorphous form of diamond. The fraction of sp2- bonded carbon was quantified and found to be of the order of 15%. It was not possible to determine if the sp2 carbon was on the surface or throughout the bulk.read more
Citations
More filters
Journal ArticleDOI
Carbon-based Supercapacitors Produced by Activation of Graphene
Yanwu Zhu,Shanthi Murali,Meryl D. Stoller,K. J. Ganesh,Weiwei Cai,Paulo J. Ferreira,Adam Pirkle,Robert M. Wallace,Katie A. Cychosz,Matthias Thommes,Dong Su,Eric A. Stach,Rodney S. Ruoff +12 more
TL;DR: This work synthesized a porous carbon with a Brunauer-Emmett-Teller surface area, a high electrical conductivity, and a low oxygen and hydrogen content that has high values of gravimetric capacitance and energy density with organic and ionic liquid electrolytes.
Journal ArticleDOI
Diamond-like amorphous carbon
TL;DR: In this paper, the authors describe the deposition methods, deposition mechanisms, characterisation methods, electronic structure, gap states, defects, doping, luminescence, field emission, mechanical properties and some applications of diamond-like carbon.
Journal ArticleDOI
Atomic and Electronic Structure of Graphene-Oxide
K. Andre Mkhoyan,Alex W. Contryman,John Silcox,Derek Stewart,Goki Eda,Cecilia Mattevi,Steve Miller,Manish Chhowalla +7 more
TL;DR: The results of this detailed analysis reveal that the GO is rough with an average surface roughness of 0.6 nm and the structure is predominantly amorphous due to distortions from sp3 C-O bonds.
Journal ArticleDOI
Characterization of amorphous and nanocrystalline carbon films
Paul K. Chu,Liuhe Li +1 more
TL;DR: In this paper, the structures of various types of amorphous carbon films and common characterization techniques are described, which can be classified as polymer-like, diamond-like or graphite-like based on the main binding framework.
PatentDOI
Substrate-free gas-phase synthesis of graphene sheets
TL;DR: It is proved that graphene can be created without three-dimensional materials or substrates and demonstrate a possible avenue to the large-scale synthesis of graphene.
References
More filters
Book
Electron Energy-Loss Spectroscopy in the Electron Microscope
Ray F. Egerton,Dale E. Newbury +1 more
TL;DR: In this article, the authors present an overview of the basic principles of energy-loss spectroscopy, including the use of the Wien filter, and the analysis of the inner-shell of the detector.
Journal ArticleDOI
Polarization-dependent C(K) near-edge x-ray-absorption fine structure of graphite.
Journal ArticleDOI
Structure and bonding of hydrocarbon plasma generated carbon films: An electron energy loss study
TL;DR: In this article, the authors derived the optical constants of hard amorphous carbon films (aC:H) prepared by plasma decomposition of benzene and showed that 13 of the carbon atoms are trigonally bonded and 273 of the atoms are tetrahedrally bonded.
Journal ArticleDOI
Fermi-Level Lowering and the Core Exciton Spectrum of Intercalated Graphite
Eugene J. Mele,J. J. Ritsko +1 more
TL;DR: In this paper, the authors measured the Fermi energy in stage-1 Fe${\mathrm{Cl}}_{3}$-intercalated graphite is directly measured in the spectrum of electronic excitations from carbon $1s$ core states to empty carbon $2p$ states which appear after intercalation.