Results 191 to 200 of about 6,863 (223)
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Intercalation of iodine pentafluoride into HOPG
Journal of Fluorine Chemistry, 1983Abstract Iodine pentafluoride intercalates into highly oriented pyrolytic graphite (HOPG) in the presence of fluorine. X-ray (001) diffractograms on samples which were no longer in equilibrium with the IF 5 + F 2 atmosphere showed the presence of three different systems with filled layer spacings of 6.0, 9.4 and 8.5A, respectively.
I. Palchan, D. Davidov, H. Selig
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Measurements of polyphosphoric acid on HOPG
Journal of Microscopy, 1870SUMMARYAs a sample for initial study on biological materials by using scanning tunnelling microscope (STM), we selected phosphoric acid consisting of phosphorous atoms which play biologically an important role. We measured polyphosphoric acid coated on HOPG by STM and scanning tunnelling spectroscopy (STS) in air.
Wataru Mizutani +6 more
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Synthetic Metals, 1989
Abstract The infrared-active modes of HOPG have been measured under ultrahigh vacuum conditions. The two vibrational bands have been found to be strongly dependent on the polarization of the incoming IR-beam. Under s-polarization the A 2u -mode is not detectable.
J Heidberg +3 more
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Abstract The infrared-active modes of HOPG have been measured under ultrahigh vacuum conditions. The two vibrational bands have been found to be strongly dependent on the polarization of the incoming IR-beam. Under s-polarization the A 2u -mode is not detectable.
J Heidberg +3 more
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NANOBUBBLES AT THE INTERFACE OF HOPG AND ETHANOL SOLUTION
International Journal of Nanoscience, 2005Recently, it has been put forward that bubbles of nanometer scale (nanobubbles) can exist on solid surfaces immersed in aqueous solution, especially on hydrophobic substrates. This interfacial phenomenon has invited extensive interests in both scientific and commercial fields.
Zhang, X. H. +4 more
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Electrochemical and Solid-State Letters, 2009
The electrochemical reduction of oxygen on highly oriented pyrolytic graphite (HOPG) electrodes coated with multiwalled carbon nanotubes (MWCNTs) was investigated in alkaline media using the rotating disk electrode (RDE) technique. A hydrodynamic method was employed for the deposition of nanotubes onto HOPG. The surface morphology of the MWCNT-modified
Ivar Kruusenberg +3 more
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The electrochemical reduction of oxygen on highly oriented pyrolytic graphite (HOPG) electrodes coated with multiwalled carbon nanotubes (MWCNTs) was investigated in alkaline media using the rotating disk electrode (RDE) technique. A hydrodynamic method was employed for the deposition of nanotubes onto HOPG. The surface morphology of the MWCNT-modified
Ivar Kruusenberg +3 more
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Growth and electronic properties of NaCl on HOPG
Surface Science, 2014Abstract We report the growth of cross-shaped islands of NaCl on highly oriented pyrolytic graphite (HOPG) and discuss the mechanism of formation and growth kinetics within the framework of diffusion limited aggregation (DLA). These structures are investigated using scanning probe microscopy.
O. Mahapatra, P.J. Kowalczyk, S.A. Brown
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Fluorine-graphite HOPG intercalation compounds
Synthetic Metals, 1988Abstract Fluorine-graphite intercalation compounds C x F (15>×≥5.6) have been obtained by exposing HOPG to fluorine with available highest purity, at 50°C for periods exceeding 30 days. The identity period and the intercalant thickness of pure stage-2 compound C 6.4 F are, respectively, 9.46 and 2.76 A. In-plane electrical conductivities of C x F are
H Touhara +6 more
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X-Ray Spectrometry, 2003
Abstract A new method of producing strongly bent highly oriented pyrolytic graphite (HOPG) is presented. The method allows one to make a crystal of almost arbitrary shape, but has some thickness limits. A review of the results obtained on this type of crystal by different laboratories during the last 10 years is given.
I. G. Grigorieva, A. A. Antonov
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Abstract A new method of producing strongly bent highly oriented pyrolytic graphite (HOPG) is presented. The method allows one to make a crystal of almost arbitrary shape, but has some thickness limits. A review of the results obtained on this type of crystal by different laboratories during the last 10 years is given.
I. G. Grigorieva, A. A. Antonov
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Aggregation of gold condensate on HOPG substrate
Vacuum, 1998Island growth of Au evaporated in vacuum on HOPG substrates was studied using STM. Experiments showed aggregation of 3D clusters when the HOPG substrate contains adsorbate formed after cleaving under ambient conditions. Adsorbate layer on the surface supports growth of small particles with diameters from 5 to 15 nm which aggregate, stick together and ...
Ivan Ošt′ádal +2 more
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STM Study of Moire Patterns on HOPG
Chinese Journal of Chemical Physics, 2006Moire patterns on HOPG were studied with scanning tunneling microscopy (STM). The results reveal that the observed Moire patterns originate from the defects locating several layers below the surface, which presents the first experimental evidence supporting the prediction that in HOPG the nanoscale electronic waves can propagate through several layers ...
Jian-fei Zhang, Geng-yu Cao
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