Open AccessA HIGH RESOLUTION ELECTRON MICROSCOPY INVESTIGATION OF CURVATURE IN MULTILAYER GRAPHITE SHEETS
Author(s) -
Zhenxia Wang,
Jun Hu,
Wenmin Wang,
Guoqing Yu,
Meiling Ruan
Publication year - 1998
Publication title -
wuli xuebao
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.199
H-Index - 47
ISSN - 1000-3290
DOI - 10.7498/aps.47.1853
Subject(s) - graphite , high resolution transmission electron microscopy , materials science , highly oriented pyrolytic graphite , pyrolytic carbon , transmission electron microscopy , curvature , resolution (logic) , electron microscope , zone axis , lattice (music) , crystallography , optics , electron diffraction , composite material , diffraction , nanotechnology , physics , geometry , chemical engineering , chemistry , mathematics , pyrolysis , artificial intelligence , computer science , acoustics , engineering
Here we report a carbon sample generated by sonicating high oriented pyrolytic graphite (HOPG) in ethanol, water or ethanol-water mixed solution. High resolution transmission electron microscopy (HRTEM) revealed many multilayer graphite sheets with a total curved angle that is multiples of θ0(=30°). Close examination of the micrographs showed that the curvature is accomplished by bending the lattice planes. A possible explanation for the curvature in multilayer graphite sheets is discussed based on the conformation of graphite symmetry axes and the formation of sp3-like line defects in the sp2 graphitic network.