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Migration of Ag, Cd and Cu Into Highly Oriented Pyrolytic Graphite and Pyrolytic Coated Graphite
Spectrochimica Acta, Part B: Atomic Spectroscopy, 1995Abstract Migration of Cd, Cu and Ag from solution deposited samples of the respective nitrates into highly oriented pyrolytic graphite (HOPG) was studied using electrothermal atomic absorption spectroscopy (ETAAS) with platform vaporization. Metal migration was verified by removing the top layers of the HOPG platform after the sample had dried and ...
James A Holcombe
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Frictional Behavior of Highly Oriented Pyrolytic Graphite
Journal of Applied Physics, 1994Friction of a freshly cleaved highly oriented pyrolytic graphite (HOPG) surface and a roughened graphite surface against a silicon nitride tip is measured using a friction force microscope. The cleaved graphite surface is an atomically smooth surface of (0001) plane with a small fraction of line-shaped regions.
Ju-Ai Ruan
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Damage and deuterium trapping in highly-oriented pyrolytic graphite
Journal of Applied Physics, 1993In this work the buildup of damage due to deuterium implantation in highly-oriented pyrolytic graphite (HOPG) is investigated. HOPG was implanted with 10–30 keV D3+ at different target temperatures between room temperature and 773 K with fluences from 1014 to 1018 D/cm2.
Siegele, R. +3 more
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Kinetic studies of the oxidation of highly oriented pyrolytic graphites
Carbon, 1972Abstract Two highly oriented stress-recrystallized pyrolytic graphites have been used to study the kinetics of the carbon-O2 reaction. Experimental conditions ranged from 700 to 800°C with O2 pressures from 6 to 60 Torr. Activation energies were determined at 20 Torr O2 pressure and the order of reaction determined at 725–750°C. Prior to the reaction,
F. Rodriguez-Reinoso +2 more
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Microscopic studies of oxidized highly oriented pyrolytic graphite
Carbon, 1972Abstract Microscopic examination of two highly oriented pyrolytic graphites reacted with oxygen has revealed some unusual structural features. Oxygen attack occurs on basal plane surfaces to produce channels at crystallite boundaries, monolayer pits at lattice vacancies, and deeper pits at some unidentified structural defects. It is argued that these
F. Rodriguez-reinoso, P.A. Thrower
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Deposition of DNA Nanostructures on Highly Oriented Pyrolytic Graphite
Langmuir, 2017We report the deposition of DNA origami nanostructures on highly oriented pyrolytic graphite (HOPG). The DNA origami goes through a structural rearrangement and the DNA base is exposed to interact with the graphite surface. Exposure to ambient air, which is known to result in a hydrophilic-to-hydrophobic wetting transition of HOPG, does not ...
Karen B. Ricardo +4 more
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Infrared ellipsometry of highly oriented pyrolytic graphite
Thin Solid Films, 2011We study the anisotropic response of highly oriented pyrolytic graphite (HOPG) in mid-infrared range, utilizing the potential of spectroscopic ellipsometry. We aim at the parameters of the infrared-active vibrations of E(1u) and A(2u) symmetry, and examine the phenomena related to the strong uniaxial anisotropy of HOPG. We explain the appearance of the
J. Humlíček +4 more
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Conductance of highly oriented pyrolytic graphite nanocontacts
Applied Physics A, 2005The conductance-voltage G(V) characteristics for contacts between electrodes of highly oriented pyrolytic graphite were studied in a wide range of G(0), bias voltages, and temperatures using the mechanically controllable break junction technique. Our results show a striking resemblance to corresponding data for conducting multiwall carbon nanotubes ...
Shklyarevskiy, O.I. +2 more
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Ion implantation in highly oriented pyrolytic graphite
Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms, 1986Abstract Highly oriented pyrolytic graphite was studied by axial channeling along the surface normal, and by planar channeling between the carbon planes. The effects of ion implantation with Co and Xe atoms were studied by Rutherford backscattering spectroscopy and by Mossbauer spectroscopy. Ion implantation with fluences up to 10 14 atoms cm
D. Schroyen +3 more
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Arrays of Double-Decker Porphyrins on Highly Oriented Pyrolytic Graphite
Langmuir, 2006Three double-decker complexes of cerium(IV) were synthesized, which commonly have a 5,10,15,20-tetrakis(4-docosyloxyphenyl)porphyrin (C22OPP) moiety as one of the two tetrapyrrole rings. The three complexes-Ce(Pc)(C22OPP), Ce(C22OPP)2, and Ce(BPEPP)(C22OPP)-are distinguished by the other rings, which are Pc (=phthalocyanine), C22OPP, and BPEPP (=5,15 ...
Joe, Otsuki +4 more
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