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Author | Lu, Y.-G.; Turner, S.; Ekimov, E.A.; Verbeeck, J.; Van Tendeloo, G. | ||||
Title | Boron-rich inclusions and boron distribution in HPHT polycrystalline superconducting diamond | Type | A1 Journal article | ||
Year | 2015 | Publication | Carbon | Abbreviated Journal | Carbon |
Volume | 86 | Issue | 86 | Pages | 156-162 |
Keywords | A1 Journal article; Electron microscopy for materials research (EMAT) | ||||
Abstract | Polycrystalline boron-doped superconducting diamond, synthesized at high pressure and high temperature (HPHT) via a reaction of a single piece of crystalline boron with monolithic graphite, has been investigated by analytical transmission electron microscopy. The local boron distribution and boron environment have been studied by a combination of (scanning) transmission electron microscopy ((S)TEM) and spatially resolved electron energy-loss spectroscopy (EELS). High resolution TEM imaging and EELS elemental mapping have established, for the first time, the presence of largely crystalline diamond-diamond grain boundaries within the material and have evidenced the presence of substitutional boron dopants within individual diamond grains. Confirmation of the presence of substitutional B dopants has been obtained through comparison of acquired boron K-edge EELS fine structures with known references. This confirmation is important to understand the origin of superconductivity in polycrystalline B-doped diamond. In addition to the substitutional boron doping, boron-rich inclusions and triple-points, both amorphous and crystalline, with chemical compositions close to boron carbide B4C, are evidenced. (C) 2015 Elsevier Ltd. All rights reserved. | ||||
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Publisher | Place of Publication | Oxford | Editor | ||
Language | Wos | 000352922700019 | Publication Date | 2015-01-22 | |
Series Editor | Series Title | Abbreviated Series Title | |||
Series Volume | Series Issue | Edition | |||
ISSN | 0008-6223; | ISBN | Additional Links | UA library record; WoS full record; WoS citing articles | |
Impact Factor | 6.337 | Times cited | 20 | Open Access | |
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FWO; 246791 COUNTATOMS; 278510 VORTEX; Hercules ECASJO_; | Approved | Most recent IF: 6.337; 2015 IF: 6.196 | ||
Call Number | c:irua:125994UA @ admin @ c:irua:125994 | Serial | 250 | ||
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Author | Veronesi, S.; Pfusterschmied, G.; Fabbri, F.; Leitgeb, M.; Arif, O.; Esteban, D.A.; Bals, S.; Schmid, U.; Heun, S. | ||||
Title | 3D arrangement of epitaxial graphene conformally grown on porousified crystalline SiC | Type | A1 Journal article | ||
Year | 2022 | Publication | Carbon | Abbreviated Journal | Carbon |
Volume | 189 | Issue | Pages | 210-218 | |
Keywords | A1 Journal article; Engineering sciences. Technology; Electron microscopy for materials research (EMAT) | ||||
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Publisher | Place of Publication | Editor | |||
Language | Wos | 000760358800008 | Publication Date | 2021-12-17 | |
Series Editor | Series Title | Abbreviated Series Title | |||
Series Volume | Series Issue | Edition | |||
ISSN | 0008-6223 | ISBN | Additional Links | UA library record; WoS full record; WoS citing articles | |
Impact Factor | 10.9 | Times cited | 3 | Open Access | OpenAccess |
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Horizon 2020; European Commission; Horizon 2020 Framework Programme; European Research Council, 128 731 019 ; European Research Council, REALNANO 815 128 ; sygmaSB | Approved | Most recent IF: 10.9 | ||
Call Number | EMAT @ emat @c:irua:186583 | Serial | 6952 | ||
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Author | Tikhomirov, A.S.; Sorokina, N.E.; Shornikova, O.N.; Morozov, V.A.; Van Tendeloo, G.; Avdeev, V.V. | ||||
Title | The chemical vapor infiltration of exfoliated graphite to produce carbon/carbon composites | Type | A1 Journal article | ||
Year | 2011 | Publication | Carbon | Abbreviated Journal | Carbon |
Volume | 49 | Issue | 1 | Pages | 147-153 |
Keywords | A1 Journal article; Electron microscopy for materials research (EMAT) | ||||
Abstract | Chemical vapor infiltration was used for the production of carbon/carbon composites based on exfoliated graphite and pyrolytic carbon Two different exfoliated graphites compacted to densities of 0 05-0 4 g/cm(3) were used as a preform The influence of the synthesis conditions (temperature, pressure, time etc) on the degree of infiltration, the pyrolytic carbon morphology and the C/C composite characteristics was examined using Raman spectroscopy, scanning electron microscopy and low-temperature nitrogen adsorption (C) 2010 Elsevier Ltd All rights reserved | ||||
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Publisher | Place of Publication | Oxford | Editor | ||
Language | Wos | 000284977500021 | Publication Date | 2010-09-08 | |
Series Editor | Series Title | Abbreviated Series Title | |||
Series Volume | Series Issue | Edition | |||
ISSN | 0008-6223; | ISBN | Additional Links | UA library record; WoS full record; WoS citing articles | |
Impact Factor | 6.337 | Times cited | 7 | Open Access | |
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Iap | Approved | Most recent IF: 6.337; 2011 IF: 5.378 | ||
Call Number | UA @ lucian @ c:irua:99185 | Serial | 354 | ||
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Author | Li, Y.; Zhang, X.B.; Tao, X.Y.; Xu, J.M.; Chen, F.; Shen, L.H.; Yang, X.F.; Liu, F.; Van Tendeloo, G.; Geise, H.J. | ||||
Title | Single phase MgMoO4 as catalyst for the synthesis of bundled multi-wall carbon nanotubes by CVD | Type | L1 Letter to the editor | ||
Year | 2005 | Publication | Carbon | Abbreviated Journal | Carbon |
Volume | 43 | Issue | 6 | Pages | 1325-1328 |
Keywords | L1 Letter to the editor; Electron microscopy for materials research (EMAT) | ||||
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Publisher | Place of Publication | Oxford | Editor | ||
Language | Wos | 000228676400026 | Publication Date | 2005-03-11 | |
Series Editor | Series Title | Abbreviated Series Title | |||
Series Volume | Series Issue | Edition | |||
ISSN | 0008-6223; | ISBN | Additional Links | UA library record; WoS full record; WoS citing articles | |
Impact Factor | 6.337 | Times cited | 23 | Open Access | |
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Iap V-1 | Approved | Most recent IF: 6.337; 2005 IF: 3.419 | ||
Call Number | UA @ lucian @ c:irua:59055 | Serial | 3026 | ||
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Author | Afanasov, I.M.; Shornikova, O.N.; Avdeev, V.V.; Lebedev, O.I.; Van Tendeloo, G.; Matveev, A.T. | ||||
Title | Expanded graphite as a support for Ni/carbon composites | Type | A1 Journal article | ||
Year | 2009 | Publication | Carbon | Abbreviated Journal | Carbon |
Volume | 47 | Issue | 2 | Pages | 513-518 |
Keywords | A1 Journal article; Electron microscopy for materials research (EMAT) | ||||
Abstract | Expanded graphite decorated with nickel oxide particles (EGNiO) has been synthesized through electrochemical oxidation of natural graphite in an aqueous nickel nitrate solution followed by a heat treatment. EGNiO was used to prepare nickel/carbon composites using two techniques: (a) hydrogen reduction of nickel oxide particles loaded on the expanded graphite surface and (b) pyrolysis of coal tar pitch-impregnated EGNiO blocks. The EGNiO as well as the nickel/carbon composites have been characterized by X-ray diffraction, scanning and transmission electron microscopy, energy dispersive X-ray spectroscopy and selected area electron diffraction. | ||||
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Publisher | Place of Publication | Oxford | Editor | ||
Language | Wos | 000262558300018 | Publication Date | 2008-11-11 | |
Series Editor | Series Title | Abbreviated Series Title | |||
Series Volume | Series Issue | Edition | |||
ISSN | 0008-6223; | ISBN | Additional Links | UA library record; WoS full record; WoS citing articles | |
Impact Factor | 6.337 | Times cited | 45 | Open Access | |
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Iap-Vi | Approved | Most recent IF: 6.337; 2009 IF: 4.504 | ||
Call Number | UA @ lucian @ c:irua:76033 | Serial | 1132 | ||
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Author | Afanasov, I.M.; Morozov, V.A.; Kepman, A.V.; Ionov, S.G.; Seleznev, A.N.; Van Tendeloo, G.; Audeev, V.V. | ||||
Title | Preparation, electrical and thermal properties of new exfoliated graphite-based composites | Type | A1 Journal article | ||
Year | 2009 | Publication | Carbon | Abbreviated Journal | Carbon |
Volume | 47 | Issue | 1 | Pages | 263-270 |
Keywords | A1 Journal article; Electron microscopy for materials research (EMAT) | ||||
Abstract | Exfoliated graphite samples (EG) with different bulk densities were prepared by the exfoliation of expandable graphite under a thermal shock regime. As a conductive filler, EG has been incorporated successfully into the coal tar pitch matrix by mechanical mixing. The conducting behavior of the composite was interpreted based on the percolation theory. The percolation threshold of the EG/pitch conducting composites at room temperature was as low as 1.5 wt% and did not depend on the bulk density of the EG used. By means of thermogravimetry the improvement of thermal stability of the composites in comparison with pure pitches was detected. The phenomenon was ascribed to heat shielding effect of the EG particles evidenced by matrix-assisted laser desorption/ionization mass spectrometry. | ||||
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Publisher | Place of Publication | Oxford | Editor | ||
Language | Wos | 000262143500032 | Publication Date | 2008-10-14 | |
Series Editor | Series Title | Abbreviated Series Title | |||
Series Volume | Series Issue | Edition | |||
ISSN | 0008-6223; | ISBN | Additional Links | UA library record; WoS full record; WoS citing articles | |
Impact Factor | 6.337 | Times cited | 42 | Open Access | |
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Iap-Vi | Approved | Most recent IF: 6.337; 2009 IF: 4.504 | ||
Call Number | UA @ lucian @ c:irua:75767 | Serial | 2701 | ||
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Author | Corthals, S.; van Noyen, J.; Geboers, J.; Vosch, T.; Liang, D.; Ke, X.; Hofkens, J.; Van Tendeloo, G.; Jacobs, P.; Sels, B. | ||||
Title | The beneficial effect of CO2 in the low temperature synthesis of high quality carbon nanofibers and thin multiwalled carbon nanotubes from CH_{4} over Ni catalysts | Type | A1 Journal article | ||
Year | 2012 | Publication | Carbon | Abbreviated Journal | Carbon |
Volume | 50 | Issue | 2 | Pages | 372-384 |
Keywords | A1 Journal article; Electron microscopy for materials research (EMAT) | ||||
Abstract | A low temperature chemical vapor deposition method is described for converting CH4 into high-quality carbon nanofibers (CNFs) using a Ni catalyst supported on either spinel or perovskite oxides in the presence of CO2. The addition of CO2 has a significant influence on CNF purity and stability, while the CNF diameter distribution is significantly narrowed. Ultimately, the addition of CO2 changes the CNF structure from fishbone fibers to thin multiwalled carbon nanotubes. A new in situ cooling principle taking into account dry reforming chemistry and thermodynamics is introduced to account for the structural effects of CO2. | ||||
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Publisher | Place of Publication | Oxford | Editor | ||
Language | Wos | 000297397700004 | Publication Date | 2011-09-01 | |
Series Editor | Series Title | Abbreviated Series Title | |||
Series Volume | Series Issue | Edition | |||
ISSN | 0008-6223; | ISBN | Additional Links | UA library record; WoS full record; WoS citing articles | |
Impact Factor | 6.337 | Times cited | 26 | Open Access | |
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Iwt; Iap | Approved | Most recent IF: 6.337; 2012 IF: 5.868 | ||
Call Number | UA @ lucian @ c:irua:93626 | Serial | 228 | ||
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Author | Suarez-Martinez, I.; Bittencourt, C.; Ke, X.; Felten, A.; Pireaux, J.J.; Ghijsen, J.; Drube, W.; Van Tendeloo, G.; Ewels, C.P. | ||||
Title | Probing the interaction between gold nanoparticles and oxygen functionalized carbon nanotubes | Type | A1 Journal article | ||
Year | 2009 | Publication | Carbon | Abbreviated Journal | Carbon |
Volume | 47 | Issue | 6 | Pages | 1549-1554 |
Keywords | A1 Journal article; Electron microscopy for materials research (EMAT) | ||||
Abstract | The interaction between evaporated gold and pristine or oxygen plasma treated multi-walled carbon nanotubes (MWCNTs) is investigated. Experimental and theoretical results indicate that gold nucleation occurs at defect sites, whether initially present or introduced by oxygen plasma treatment. Uniform gold cluster dispersion is observed on plasma treated carbon nanotubes (CNTs) and associated with the presence of uniformly dispersed oxidized vacancy centres on the CNT surface. | ||||
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Publisher | Place of Publication | Oxford | Editor | ||
Language | Wos | 000265518700018 | Publication Date | 2009-02-11 | |
Series Editor | Series Title | Abbreviated Series Title | |||
Series Volume | Series Issue | Edition | |||
ISSN | 0008-6223; | ISBN | Additional Links | UA library record; WoS full record; WoS citing articles | |
Impact Factor | 6.337 | Times cited | 38 | Open Access | |
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Pai | Approved | Most recent IF: 6.337; 2009 IF: 4.504 | ||
Call Number | UA @ lucian @ c:irua:77267 | Serial | 2717 | ||
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Author | Pierard, N.; Fonseca, A.; Colomer, J.-F.; Bossuot, C.; Benoit, J.-M.; Van Tendeloo, G.; Pirard, J.-P.; Nagy, J.B. | ||||
Title | Ball milling effect on the structure of single-wall carbon nanotubes | Type | A1 Journal article | ||
Year | 2004 | Publication | Carbon | Abbreviated Journal | Carbon |
Volume | 42 | Issue | 8/9 | Pages | 1691-1697 |
Keywords | A1 Journal article; Electron microscopy for materials research (EMAT) | ||||
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Publisher | Place of Publication | Oxford | Editor | ||
Language | Wos | 000221948000035 | Publication Date | 2004-04-09 | |
Series Editor | Series Title | Abbreviated Series Title | |||
Series Volume | Series Issue | Edition | |||
ISSN | 0008-6223; | ISBN | Additional Links | UA library record; WoS full record; WoS citing articles | |
Impact Factor | 6.337 | Times cited | 133 | Open Access | |
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Pai/Iuap P5/01 | Approved | Most recent IF: 6.337; 2004 IF: 3.331 | ||
Call Number | UA @ lucian @ c:irua:54866 | Serial | 213 | ||
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Author | Fukuhara, S.; Bal, K.M.; Neyts, E.C.; Shibuta, Y. | ||||
Title | Entropic and enthalpic factors determining the thermodynamics and kinetics of carbon segregation from transition metal nanoparticles | Type | A1 Journal article | ||
Year | 2021 | Publication | Carbon | Abbreviated Journal | Carbon |
Volume | 171 | Issue | Pages | 806-813 | |
Keywords | A1 Journal article; Plasma Lab for Applications in Sustainability and Medicine – Antwerp (PLASMANT) | ||||
Abstract | The free energy surface (FES) for carbon segregation from nickel nanoparticles is obtained from advanced molecular dynamics simulations. A suitable reaction coordinate is developed that can distinguish dissolved carbon atoms from segregated dimers, chains and junctions on the nanoparticle surface. Because of the typically long segregation time scale (up to ms), metadynamics simulations along the developed reaction coordinate are used to construct FES over a wide range of temperatures and carbon concentrations. The FES revealed the relative stability of different stages in the segregation process, and free energy barriers and rates of the individual steps could then be calculated and decomposed into enthalpic and entropic contributions. As the carbon concentration in the nickel nanoparticle increases, segregated carbon becomes more stable in terms of both enthalpy and entropy. The activation free energy of the reaction also decreases with the increase of carbon concentration, which can be mainly attributed to entropic effects. These insights and the methodology developed to obtain them improve our understanding of carbon segregation process across materials science in general, and the nucleation and growth of carbon nanotube in particular. | ||||
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Publisher | Place of Publication | Editor | |||
Language | Wos | 000598371500084 | Publication Date | 2020-09-25 | |
Series Editor | Series Title | Abbreviated Series Title | |||
Series Volume | Series Issue | Edition | |||
ISSN | 0008-6223 | ISBN | Additional Links | UA library record; WoS full record; WoS citing articles | |
Impact Factor | 6.337 | Times cited | Open Access | OpenAccess | |
Notes ![]() |
Scientific Research, 19H02415 ; JSPS, 18J22727 ; Japan Society for the Promotion of Science; JSPS; JSPS; FWO; Research Foundation; Flanders, 12ZI420N ; This work was supported by Grant-in-Aid for Scientific Research (B) (No.19H02415) and Grant-in-Aid for JSPS Research Fellow (No.18J22727) from Japan Society for the Promotion of Science (JSPS), Japan. S.F. was supported by JSPS through the Program for 812 | Approved | Most recent IF: 6.337 | ||
Call Number | PLASMANT @ plasmant @c:irua:172452 | Serial | 6421 | ||
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Author | Kleshch, V.I.; Porshyn, V.; Orekhov, A.S.; Orekhov, A.S.; Lützenkirchen-Hecht, D.; Obraztsov, A.N. | ||||
Title | Carbon single-electron point source controlled by Coulomb blockade | Type | A1 Journal article | ||
Year | 2021 | Publication | Carbon | Abbreviated Journal | Carbon |
Volume | 171 | Issue | Pages | 154-160 | |
Keywords | A1 Journal article; Electron microscopy for materials research (EMAT) | ||||
Abstract | The Coulomb blockade effect is commonly used in solid state electronics for the control of electron flow at the single-particle level. Potentially, it allows the creation of single-electron point sources demanded for prospective electron microscopy instruments and other vacuum electronics devices. Here we realize this potential via creation of a stable point electron source composed of a carbon nanowire electrically coupled to a diamond nanotip by a tunnel junction. Using energy spectroscopy analysis, we characterize the electrons liberated from the nanometer scale carbon heterostructures in time and energy domains. Our experimental results demonstrate perfect agreement with theory prediction of Coulomb oscillations of the Fermi level in the nanowire and allow to determine the mechanisms of their suppression. Persistence of the oscillations at room temperature, high intensity field emission with currents up to 1 mA, and other characteristics of our emitters are very promising for practical realization of coherent single-electron guns. |
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Publisher | Place of Publication | Editor | |||
Language | Wos | 000598371500018 | Publication Date | 2020-09-06 | |
Series Editor | Series Title | Abbreviated Series Title | |||
Series Volume | Series Issue | Edition | |||
ISSN | 0008-6223 | ISBN | Additional Links | UA library record; WoS full record; WoS citing articles | |
Impact Factor | 6.337 | Times cited | Open Access | OpenAccess | |
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The work was supported by Russian Science Foundation (Project No. 19-72-10067). | Approved | Most recent IF: 6.337 | ||
Call Number | EMAT @ emat @c:irua:175013 | Serial | 6670 | ||
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Author | Khalilov, U.; Bogaerts, A.; Neyts, E.C. | ||||
Title | Atomic-scale mechanisms of plasma-assisted elimination of nascent base-grown carbon nanotubes | Type | A1 Journal article | ||
Year | 2017 | Publication | Carbon | Abbreviated Journal | Carbon |
Volume | 118 | Issue | 118 | Pages | 452-457 |
Keywords | A1 Journal article; Plasma Lab for Applications in Sustainability and Medicine – Antwerp (PLASMANT) | ||||
Abstract | Selective etching allows for obtaining carbon nanotubes with a specific chirality. While plasma-assisted etching has already been used to separate metallic tubes from their semiconducting counterparts, little is known about the nanoscale mechanisms of the etching process. We combine (reactive) molecular dynamics (MD) and force-bias Monte Carlo (tfMC) simulations to study H-etching of CNTs. In particular, during the hydrogenation and subsequent etching of both the carbon cap and the tube, they sequentially transform to different carbon nanostructures, including carbon nanosheet, nanowall, and polyyne chains, before they are completely removed from the surface of a substrate-bound Ni-nanocluster.We also found that onset of the etching process is different in the cases of the cap and the tube, although the overall etching scenario is similar in both cases. The entire hydrogenation/etching process for both cases is analysed in detail, comparing with available theoretical and experimental evidences. | ||||
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Publisher | Place of Publication | Editor | |||
Language | Wos | 000401120800053 | Publication Date | 2017-03-26 | |
Series Editor | Series Title | Abbreviated Series Title | |||
Series Volume | Series Issue | Edition | |||
ISSN | 0008-6223 | ISBN | Additional Links | UA library record; WoS full record; WoS citing articles | |
Impact Factor | 6.337 | Times cited | 2 | Open Access | OpenAccess |
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U. K. gratefully acknowledges financial support from the Research Foundation – Flanders (FWO), Belgium (Grant No. 12M1315N). The work was carried out in part using the Turing HPC infrastructure of the CalcUA core facility of the Universiteit Antwerpen, a division of the Flemish Supercomputer Centre VSC, funded by the Hercules Foundation, the Flemish Government (department EWI) and the Universiteit Antwerpen. The authors also thank Prof. A. C. T. van Duin for sharing the ReaxFF code. | Approved | Most recent IF: 6.337 | ||
Call Number | PLASMANT @ plasmant @ c:irua:141915 | Serial | 4531 | ||
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