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Author Nistor, L.; Nistor, S.V.; Dincã, G.; van Landuyt, J.; Schoemaker, D.; Copaciu, V.; Georgeoni, P.; Arnici, N.
  Title High resolution electron microscopy and electron spin resonance studies on cubic boron nitride crystals made by high-pressure/high-temperature synthesis Type A1 Journal article
  Year 1999 Publication Diamonds an related materials Abbreviated Journal Diam Relat Mater
  Volume 8 Issue Pages 738-742
  Keywords A1 Journal article; Electron microscopy for materials research (EMAT)
  Abstract
  Address
  Corporate Author Thesis
  Publisher Place of Publication Editor
  Language Wos 000080437000123 Publication Date 2002-07-25
  Series Editor Series Title Abbreviated Series Title
  Series Volume Series Issue Edition
  ISSN (down) 0925-9635; ISBN Additional Links UA library record; WoS full record; WoS citing articles
  Impact Factor 2.561 Times cited 7 Open Access
  Notes Approved Most recent IF: 2.561; 1999 IF: 1.924
  Call Number UA @ lucian @ c:irua:27519 Serial 1445
Permanent link to this record
 

 
Author Nistor, L.; Buschmann, V.; Ralchenko, V.; Dinca, G.; Vlasov, I.; van Landuyt, J.; Fuess, H.
  Title Microstructural characterization of diamond films deposited on c-BN crystals Type A1 Journal article
  Year 2000 Publication Diamond and related materials T2 – 10th European Conference on Diamond, Diamond-Like Materials, Nitrides, and Silicon Carbide (Diamond 1999), SEP 12-17, 1999, PRAGUE, CZECH REPUBLIC Abbreviated Journal Diam Relat Mater
  Volume 9 Issue 3-6 Pages 269-273
  Keywords A1 Journal article; Electron microscopy for materials research (EMAT)
  Abstract The morphology and structure of diamond films, deposited on cubic boron nitride (c-BN) crystals by microwave-plasma-enhanced chemical vapor deposition, is studied by high-resolution scanning electron microscopy and micro-Raman spectroscopy. The c-BN crystals, with sizes of 200 to 350 mu m and grown by a high-temperature/high-pressure technique, were embedded in a copper holder, and used as substrates in deposition runs of 15 min to 5 h. The nucleation centers for diamond appear as well-shaped cuboctahedral crystallites, having diameters of approximately 100 nm. With increasing deposition time the diamond crystallites grew larger, forming islands on the c-BN faces. In some cases, epitaxial growth was observed on the (111) c-BN faces where coalesced particles gave rise to very smooth regions. A number of diamond crystals with peculiar shapes are observed, such as a pseudo five-fold symmetry due to multiple twinning. Moreover, both randomly distributed carbon tubes, about 100 nn in diameter and 1 mu m in length, and spherically shaped features are observed in samples prepared under the typical conditions of diamond deposition, this effect being ascribed to the influence of plasma-sputtered copper contamination. Quite unusual diamond crystals with a deep, pyramidal-shaped hole in the middle grew on the copper substrate between the c-BN crystals. (C) 2000 Elsevier Science S.A. All rights reserved.
  Address
  Corporate Author Thesis
  Publisher Place of Publication Amsterdam Editor
  Language Wos 000087382400009 Publication Date 2002-07-26
  Series Editor Series Title Abbreviated Series Title
  Series Volume Series Issue Edition
  ISSN (down) 0925-9635; ISBN Additional Links UA library record; WoS full record; WoS citing articles
  Impact Factor 2.561 Times cited 9 Open Access
  Notes Approved Most recent IF: 2.561; 2000 IF: 1.591
  Call Number UA @ lucian @ c:irua:102877 Serial 2041
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Author Neyts, E.; Bogaerts, A.; Gijbels, R.; Benedikt, J.; van den Sanden, M.C.M.
  Title Molecular dynamics simulations for the growth of diamond-like carbon films from low kinetic energy species Type A1 Journal article
  Year 2004 Publication Diamond and related materials Abbreviated Journal Diam Relat Mater
  Volume 13 Issue Pages 1873-1881
  Keywords A1 Journal article; Plasma Lab for Applications in Sustainability and Medicine – Antwerp (PLASMANT)
  Abstract
  Address
  Corporate Author Thesis
  Publisher Place of Publication Amsterdam Editor
  Language Wos 000223883400021 Publication Date 2004-07-30
  Series Editor Series Title Abbreviated Series Title
  Series Volume Series Issue Edition
  ISSN (down) 0925-9635; ISBN Additional Links UA library record; WoS full record; WoS citing articles
  Impact Factor 2.561 Times cited 53 Open Access
  Notes Approved Most recent IF: 2.561; 2004 IF: 1.670
  Call Number UA @ lucian @ c:irua:48276 Serial 2173
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Author Dideykin, A.; Aleksenskiy, A.E.; Kirilenko, D.; Brunkov, P.; Goncharov, V.; Baidakova, M.; Sakseev, D.; Vul', A.Y.
  Title Monolayer graphene from graphite oxide Type A1 Journal article
  Year 2011 Publication Diamond and related materials Abbreviated Journal Diam Relat Mater
  Volume 20 Issue 2 Pages 105-108
  Keywords A1 Journal article; Electron microscopy for materials research (EMAT)
  Abstract Graphene, a new carbon material, is attracting presently an increasing research interest. It stems from the unique electrical and mechanical properties of graphene predicted by theory. Experimental studies of graphene are, however, severely curtailed by a lack of an appropriate technique for its preparation. Mechanical cleavage of graphite proved to be ineffective, since it yields only very small (a few microns in size) particles of monolayer graphene. The rapidly developing approach based on chemical exfoliation of graphite produces large-area coatings composed primarily of arbitrarily oriented multilayer graphene particles. We have developed a technique for preparation of monolayer graphene sheets involving liquid exfoliation of crystalline graphite, which includes synthesis of graphite oxide by deep oxidation as an intermediate stage. Electron diffraction traces, as well as the variation of diffracted intensities with local orientation of graphene sheets, AFM, and HRTEM images testify to a remarkably good monolayer structure of the graphite oxide particles obtained by our technique. These results open a way to setting up high-efficiency production of monolayer graphene sheets appropriate for electrical and optical measurements and fabrication of structures for use in the field of applications.
  Address
  Corporate Author Thesis
  Publisher Place of Publication Amsterdam Editor
  Language Wos 000288145500010 Publication Date 2010-10-31
  Series Editor Series Title Abbreviated Series Title
  Series Volume Series Issue Edition
  ISSN (down) 0925-9635; ISBN Additional Links UA library record; WoS full record; WoS citing articles
  Impact Factor 2.561 Times cited 48 Open Access
  Notes Approved Most recent IF: 2.561; 2011 IF: 1.913
  Call Number UA @ lucian @ c:irua:88791 Serial 2193
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Author Liu, Y.H.; Neyts, E.; Bogaerts, A.
  Title Monte Carlo method for simulations of adsorbed atom diffusion on a surface Type A1 Journal article
  Year 2006 Publication Diamond and related materials Abbreviated Journal Diam Relat Mater
  Volume 15 Issue 10 Pages 1629-1635
  Keywords A1 Journal article; Plasma Lab for Applications in Sustainability and Medicine – Antwerp (PLASMANT)
  Abstract
  Address
  Corporate Author Thesis
  Publisher Place of Publication Amsterdam Editor
  Language Wos 000241224000021 Publication Date 2006-03-01
  Series Editor Series Title Abbreviated Series Title
  Series Volume Series Issue Edition
  ISSN (down) 0925-9635; ISBN Additional Links UA library record; WoS full record; WoS citing articles
  Impact Factor 2.561 Times cited 5 Open Access
  Notes Approved Most recent IF: 2.561; 2006 IF: 1.935
  Call Number UA @ lucian @ c:irua:59633 Serial 2196
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Author Neyts, E.; Tacq, M.; Bogaerts, A.
  Title Reaction mechanisms of low-kinetic energy hydrocarbon radicals on typical hydrogenated amorphous carbon (a-C:H) sites: a molecular dynamics study Type A1 Journal article
  Year 2006 Publication Diamond and related materials Abbreviated Journal Diam Relat Mater
  Volume 15 Issue 10 Pages 1663-1676
  Keywords A1 Journal article; Plasma Lab for Applications in Sustainability and Medicine – Antwerp (PLASMANT)
  Abstract
  Address
  Corporate Author Thesis
  Publisher Place of Publication Amsterdam Editor
  Language Wos 000241224000026 Publication Date 2006-03-08
  Series Editor Series Title Abbreviated Series Title
  Series Volume Series Issue Edition
  ISSN (down) 0925-9635; ISBN Additional Links UA library record; WoS full record; WoS citing articles
  Impact Factor 2.561 Times cited 18 Open Access
  Notes Approved Most recent IF: 2.561; 2006 IF: 1.935
  Call Number UA @ lucian @ c:irua:59634 Serial 2819
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Author Yang, Z.Q.; Verbeeck, J.; Schryvers, D.; Tarcea, N.; Popp, J.; Rösler, W.
  Title TEM and Raman characterisation of diamond micro- and nanostructures in carbon spherules from upper soils Type A1 Journal article
  Year 2008 Publication Diamond and related materials Abbreviated Journal Diam Relat Mater
  Volume 17 Issue 6 Pages 937-943
  Keywords A1 Journal article; Electron microscopy for materials research (EMAT)
  Abstract Carbonaceous spherules of millimeter size diameter and found in the upper soils throughout Europe are investigated by TEM, including SAED, HRTEM and EELS, and Raman spectroscopy. The spherules consist primarily of carbon and have an open cell-like internal structure. Most of the carbon appears in an amorphous state, but different morphologies of nano- and microdiamond particles have also been discovered including flake shapes. The latter observation, together with the original findings of some of these spherules in crater-like structures in the landscape and including severely deformed rocks with some spherules being embedded in the fused crust of excavated rocks, points towards unique conditions of origin for these spherules and particles, possibly of exogenic origin. (C) 2008 Elsevier B.V. All rights reserved.
  Address
  Corporate Author Thesis
  Publisher Place of Publication Amsterdam Editor
  Language Wos 000256940800005 Publication Date 2008-02-14
  Series Editor Series Title Abbreviated Series Title
  Series Volume Series Issue Edition
  ISSN (down) 0925-9635; ISBN Additional Links UA library record; WoS full record; WoS citing articles
  Impact Factor 2.561 Times cited 26 Open Access
  Notes GAO project Approved Most recent IF: 2.561; 2008 IF: 2.092
  Call Number UA @ lucian @ c:irua:68518 Serial 3474
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Author Nistor, L.; Teodorescu, V.; Ghica, C.; van Landuyt, J.; Dinca, G.; Georgeoni, P.
  Title The influence of the h-BN morphology and structure on the c-BN growth Type A1 Journal article
  Year 2001 Publication Diamond and related materials T2 – 11th European Conference on Diamond, Diamond-like Materials, Carbon, Nanotubes, Nitrides and Silicon Carbide (Diamond 2000), SEP 03-08, 2000, OPORTO, PORTUGAL Abbreviated Journal Diam Relat Mater
  Volume 10 Issue 3-7 Pages 1352-1356
  Keywords A1 Journal article; Electron microscopy for materials research (EMAT)
  Abstract The morphology and structure of hexagonal graphitic BN (h-BN) powders with graphitization indices GI <5, used as precursors for the synthesis of cubic BN (c-BN) crystals, has been investigated by transmission electron microscopy in diffraction contrast and high resolution. We show that besides the GI, which is a general parameter for controlling the structural quality of h-EN ponders, some other microstructural features strongly influence the synthesis of c-BN. In our opinion, the high reactivity of some h-BN powders results from the presence of some nucleation centers for c-BN, observed at the edges of the h-BN particles. They are formed by a rearrangement of the graphitic (0002) planes by bending back, joining in pairs and forming locally nanoarches (half nanotubes). In these particular places, the nature of bonding locally turns towards sp(3), as in the case of c-BN, (C) 2001 Elsevier Science B.V. All rights reserved.
  Address
  Corporate Author Thesis
  Publisher Place of Publication Amsterdam Editor
  Language Wos 000168730600206 Publication Date 2002-10-14
  Series Editor Series Title Abbreviated Series Title
  Series Volume Series Issue Edition
  ISSN (down) 0925-9635; ISBN Additional Links UA library record; WoS full record; WoS citing articles
  Impact Factor 2.561 Times cited 17 Open Access
  Notes Approved Most recent IF: 2.561; 2001 IF: 1.902
  Call Number UA @ lucian @ c:irua:103421 Serial 3586
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Author Nistor, L.C.; van Landuyt, J.; Ralchenko, V.G.; Obratzova, E.D.; Smolin, A.A.
  Title Nanocrystalline diamond films: transmission electron microscopy and Raman spectroscopy characterization Type A1 Journal article
  Year 1997 Publication Diamond and related materials Abbreviated Journal Diam Relat Mater
  Volume 6 Issue Pages 159-168
  Keywords A1 Journal article; Electron microscopy for materials research (EMAT)
  Abstract
  Address
  Corporate Author Thesis
  Publisher Place of Publication Amsterdam Editor
  Language Wos A1997WN37300021 Publication Date 0000-00-00
  Series Editor Series Title Abbreviated Series Title
  Series Volume Series Issue Edition
  ISSN (down) 0925-9635 ISBN Additional Links UA library record; WoS full record; WoS citing articles
  Impact Factor 2.561 Times cited 116 Open Access
  Notes Approved Most recent IF: 2.561; 1997 IF: 1.758
  Call Number UA @ lucian @ c:irua:21406 Serial 2249
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Author Degutis, G.; Pobedinskas, P.; Turner, S.; Lu, Y.-G.; Al Riyami, S.; Ruttens, B.; Yoshitake, T.; D'Haen, J.; Haenen, K.; Verbeeck, J.; Hardy, A.; Van Bael, M.K.
  Title CVD diamond growth from nanodiamond seeds buried under a thin chromium layer Type A1 Journal article
  Year 2016 Publication Diamond and related materials Abbreviated Journal Diam Relat Mater
  Volume 64 Issue 64 Pages 163-168
  Keywords A1 Journal article; Electron microscopy for materials research (EMAT)
  Abstract This work presents a morphological and structural analysis of CVD diamond growth on silicon from nanodiamond seeds covered by a 50 nm thick chromium layer. The role of carbon diffusion as well as chromium and carbon silicide formation is analyzed. The local diamond environment is investigated by scanning transmission electron microscopy in combination with electron energy-loss spectroscopy. The evolution of the diamond phase composition (sp3/sp2) is evaluated by micro-Raman spectroscopy. Raman and X-ray diffraction analysis are used to identify the interfacial phases formed during CVD growth. Based upon the observed morphological and structural evolution, a diamond growth model from nanodiamond seeds buried beneath a thin Cr layer is proposed.
  Address
  Corporate Author Thesis
  Publisher Place of Publication Editor
  Language Wos 000374608100020 Publication Date 2016-02-20
  Series Editor Series Title Abbreviated Series Title
  Series Volume Series Issue Edition
  ISSN (down) 0925-9635 ISBN Additional Links UA library record; WoS full record; WoS citing articles
  Impact Factor 2.561 Times cited 11 Open Access
  Notes The authors acknowledge financial support provided by Research Program FWO G.056.810 and G0044.13N. A.H. and M.K.V.B are grateful to Hercules Foundation Flanders for financial support. P.P. and S.T. are Postdoctoral Fellows of the Research Foundation – Flanders (FWO). The Titan microscope used for this work was partially funded by the Hercules Foundation. Approved Most recent IF: 2.561
  Call Number c:irua:133624UA @ admin @ c:irua:133624 Serial 4091
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Author Felgen, N.; Naydenov, B.; Turner, S.; Jelezko, F.; Reithmaier, J.P.; Popov, C.
  Title Incorporation and study of SiV centers in diamond nanopillars Type A1 Journal article
  Year 2016 Publication Diamond and related materials Abbreviated Journal Diam Relat Mater
  Volume 64 Issue 64 Pages 64-69
  Keywords A1 Journal article; Electron microscopy for materials research (EMAT)
  Abstract We report on the incorporation of SiV centers during hot filament chemical vapor deposition of diamond on top of diamond nanopillars with diameters down to 100 nm. The nanopillars themselves were prepared from nano crystalline diamond films by applying electron beam lithography and inductively coupled plasma reactive ion etching. The optical investigations revealed the presence of ensembles of SiV color centers incorporated during the overgrowth step. (C) 2016 Elsevier B.V. All rights reserved.
  Address
  Corporate Author Thesis
  Publisher Place of Publication Amsterdam Editor
  Language Wos 000374608100009 Publication Date 2016-01-16
  Series Editor Series Title Abbreviated Series Title
  Series Volume Series Issue Edition
  ISSN (down) 0925-9635 ISBN Additional Links UA library record; WoS full record; WoS citing articles
  Impact Factor 2.561 Times cited 14 Open Access
  Notes Approved Most recent IF: 2.561
  Call Number UA @ lucian @ c:irua:133623 Serial 4193
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Author Deshmukh, S.; Sankaran, K.J.; Srinivasu, K.; Korneychuk, S.; Banerjee, D.; Barman, A.; Bhattacharya, G.; Phase, D.M.; Gupta, M.; Verbeeck, J.; Leou, K.C.; Lin, I.N.; Haenen, K.; Roy, S.S.
  Title Local probing of the enhanced field electron emission of vertically aligned nitrogen-doped diamond nanorods and their plasma illumination properties Type A1 Journal article
  Year 2018 Publication Diamond and related materials Abbreviated Journal Diam Relat Mater
  Volume 83 Issue 83 Pages 118-125
  Keywords A1 Journal article; Electron microscopy for materials research (EMAT)
  Abstract A detailed conductive atomic force microscopic investigation is carried out to directly image the electron emission behavior for nitrogen-doped diamond nanorods (N-DNRs). Localized emission measurements illustrate uniform distribution of high-density electron emission sites from N-DNRs. Emission sites coupled to nano graphitic phases at the grain boundaries facilitate electron transport and thereby enhance field electron emission from N-DNRs, resulting in a device operation at low turn-on fields of 6.23 V/mu m, a high current density of 1.94 mA/cm(2) (at an applied field of 11.8 V/mu m) and a large field enhancement factor of 3320 with a long lifetime stability of 980 min. Moreover, using N-DNRs as cathodes, a microplasma device that can ignite a plasma at a low threshold field of 390 V/mm achieving a high plasma illumination current density of 3.95 mA/cm2 at an applied voltage of 550 V and a plasma life-time stability for a duration of 433 min was demonstrated.
  Address
  Corporate Author Thesis
  Publisher Place of Publication Amsterdam Editor
  Language Wos 000430767200017 Publication Date 2018-02-07
  Series Editor Series Title Abbreviated Series Title
  Series Volume Series Issue Edition
  ISSN (down) 0925-9635 ISBN Additional Links UA library record; WoS full record; WoS citing articles
  Impact Factor 2.561 Times cited 9 Open Access Not_Open_Access
  Notes ; S. Deshmulch, D. Banerjee and G. Bhattacharya are indebted to Shiv Nadar University for providing Ph.D. scholarships. K.J. Sankaran and K. Haenen like to thank the financial support of the Research Foundation Flanders (FWO) via Research Grant 12I8416N and Research Project 1519817N, and the Methusalem “NANO” network. K.J. Sankaran is a Postdoctoral Fellow of the Research Foundation-Flanders (FWO). The Qu-Ant-EM microscope used for the TEM experiments was partly funded by the Hercules fund from the Flemish Government. S. Korneychuk and J. Verbeeck acknowledge funding from GOA project “Solarpaint” of the University of Antwerp. ; Approved Most recent IF: 2.561
  Call Number UA @ lucian @ c:irua:151609UA @ admin @ c:irua:151609 Serial 5030
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Author Xiao, H.; Zhang, Z.; Xu, W.; Wang, Q.; Xiao, Y.; Ding, L.; Huang, J.; Li, H.; He, B.; Peeters, F.M.
  Title Terahertz optoelectronic properties of synthetic single crystal diamond Type A1 Journal article
  Year 2023 Publication Diamond and related materials Abbreviated Journal
  Volume 139 Issue Pages 110266-110268
  Keywords A1 Journal article; Condensed Matter Theory (CMT)
  Abstract A systematic investigation is undertaken for studying the optoelectronic properties of single crystal diamond (SCD) grown by microwave plasma chemical vapor deposition (MPCVD). It is indicated that, without intentional doping and surface treatment during the sample growth, the terahertz (THz) optical conduction in SCD is mainly affected by surface H-terminations, -OH-, O- and N-based functional groups. By using THz time-domain spectroscopy (TDS), we measure the transmittance, the complex dielectric constant and optical conductivity σ(ω) of SCD. We find that SCD does not show typical semiconductor characteristics in THz regime, where σ(ω) cannot be described rightly by the conventional Drude formula. Via fitting the real and imaginary parts of σ(ω) to the Drude-Smith formula, the ratio of the average carrier density to the effective electron mass γ = ne/m*, the electronic relaxation time τ and the electronic backscattering or localization factor can be determined optically. The temperature dependence of these parameters is examined. From the temperature dependence of γ, a metallic to semiconductor transition is observed at about T = 10 K. The temperature dependence of τ is mainly induced by electron coupling with acoustic-phonons and there is a significant effect of photon-induced electron backscattering or localization in SCD. This work demonstrates that THz TDS is a powerful technique in studying SCD which contains H-, N- and O-based bonds and has low electron density and high dc resistivity. The results obtained from this study can benefit us to gain an in-depth understanding of SCD and may provide new guidance for the application of SCD as electronic, optical and optoelectronic materials.
  Address
  Corporate Author Thesis
  Publisher Place of Publication Editor
  Language Wos Publication Date 2023-08-02
  Series Editor Series Title Abbreviated Series Title
  Series Volume Series Issue Edition
  ISSN (down) 0925-9635 ISBN Additional Links UA library record
  Impact Factor 4.1 Times cited Open Access
  Notes Approved Most recent IF: 4.1; 2023 IF: 2.561
  Call Number UA @ admin @ c:irua:200920 Serial 9103
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Author Blank, D.H.A.; Rijnders, A.J.H.M.; Verhoeven, M.A.J.; Bergs, R.M.H.; Rogalla, H.; Verbist, K.; Lebedev, O.; Van Tendeloo, G.
  Title Characterisation of multilayer ramp-type REBa2Cu3O7-\delta structures by scanning probe microscopy and high-resolution electron microscopy Type A1 Journal article
  Year 1997 Publication Journal of alloys and compounds T2 – Symposium on High Temperature Superconductor Thin Films, Growth, Mechanisms, Interfaces, Multilayers, at the 1996 Spring Meeting of the European-Materials-Society, June 04-07, 1996, Strasbourg, France Abbreviated Journal J Alloy Compd
  Volume 251 Issue 1-2 Pages 206-208
  Keywords A1 Journal article; Engineering sciences. Technology; Electron microscopy for materials research (EMAT)
  Abstract We studied the morphology of ramps in REBa2CU3O7 (REBCO) epitaxial films on SrTiO3 substrates, fabricated by RF magnetron sputter deposition and pulsed laser deposition (PLD), by scanning probe microscopy (SPM) and high resolution electron microscopy (HREM). The ramps were fabricated by Ar ion beam etching using masks of standard photoresist and TIN. AFM-studies on ramps in sputter deposited films show a strong dependence, i.e. formation of facets and ridges, on the angle of incidence of the ion beam with respect to the substrate surface as well as the rotation angle with respect to the crystal axes of the substrate. Ramps in pulsed laser deposited films did not show this dependence, Furthermore, we studied the effect of an anneal step prior to the deposition of barrier layers (i.e. PrBa2CU3O7, SrTiO3, CeO2) on the ramp. First results show a recrystallization of the ramp surface, resulting in terraces and a non-homogeneous growth of the barrier material on top of it. The thickness variations, for thin layers of barrier material, con even become much larger than expected from the amount of deposited material and are dependent on the deposition and anneal conditions. HREM studies show a well defined interface between barrier layer and electrodes. The angle of the ramp depends on the etch rate of the mask and REBCO, and on the angle of incidence of the ion beam. TiN has a much lower etch rate compared to photoresist, resulting in an angle of the ramp comparable to the angle of incidence, resulting in a low etching rate on the ramp. These results will lead to improved electrical characteristics of ramp-type junctions.
  Address
  Corporate Author Thesis
  Publisher Elsevier Science Place of Publication Lausanne Editor
  Language Wos A1997XM34000046 Publication Date 2002-07-25
  Series Editor Series Title Abbreviated Series Title
  Series Volume Series Issue Edition
  ISSN (down) 0925-8388; ISBN Additional Links UA library record; WoS full record
  Impact Factor 3.133 Times cited Open Access
  Notes Approved Most recent IF: 3.133; 1997 IF: 1.035
  Call Number UA @ lucian @ c:irua:95868 Serial 310
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Author Miglio, A.; Saniz, R.; Waroquiers, D.; Stankovski, M.; Giantomassi, M.; Hautier, G.; Rignanese, G.-M.; Gonze, X.
  Title Computed electronic and optical properties of SnO2 under compressive stress Type A1 Journal article
  Year 2014 Publication Optical materials Abbreviated Journal Opt Mater
  Volume 38 Issue Pages 161-166
  Keywords A1 Journal article; Condensed Matter Theory (CMT)
  Abstract We consider the effects of three different types of applied compressive stress on the structural, electronic and optical properties of rutile SnO2. We use standard density functional theory (OFT) to determine the structural parameters. The effective masses and the electronic band gap, as well as their stress derivatives, are computed within both DFT and many-body perturbation theory (MBPT). The stress derivatives for the SnO2 direct band gap are determined to be 62, 38 and 25 meV/GPa within MBPT for applied hydrostatic, biaxial and uniaxial stress, respectively. Compared to DFT, this is a clear improvement with respect to available experimental data. We also estimate the exciton binding energies and their stress coefficients and compute the absorption spectrum by solving the Bethe-Salpeter equation. (C) 2014 Elsevier B.V. All rights reserved.
  Address
  Corporate Author Thesis
  Publisher Place of Publication Amsterdam Editor
  Language Wos 000346228800028 Publication Date 2014-11-08
  Series Editor Series Title Abbreviated Series Title
  Series Volume Series Issue Edition
  ISSN (down) 0925-3467; ISBN Additional Links UA library record; WoS full record; WoS citing articles
  Impact Factor 2.238 Times cited 6 Open Access
  Notes ; This work was supported by the FRS-FNRS through a FRIA grant (D.W.) and a FNRS grant (G.H.). This work was also supported by the IWT Project Number 080023 (ISIMADE), the Region Wallonne through WALL-ETSF project Number 816849, the EU-FP7 HT4TCOS Grant No. PCIG11-GA-2912-321988, the FRS-FNRS through contracts FRFC Number 2.4.589.09.F and AIXPHO (PDR Grant T-0238.13). The authors would like to thank Yann Pouillon and Jean-Michel Beuken for their valuable technical support and help with the test and build system of ABINIT. Computational resources have been provided by the supercomputing facilities of the Universite catholique de Louvain (CISM/UCL) and the Consortium des Equipements de Calcul Intensif en Federation Wallonie Bruxelles (CECI) funded by the Fonds de la Recherche Scientifique de Belgique (FRS-FNRS) under Grant No. 2.5020.11. ; Approved Most recent IF: 2.238; 2014 IF: 1.981
  Call Number UA @ lucian @ c:irua:122747 Serial 460
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Author Kuznetsov, A.S.; Cuong, N.T.; Tikhomirov, V.K.; Jivanescu, M.; Stesmans, A.; Chibotaru, L.F.; Velázquez, J.J.; Rodríguez, V.D.; Kirilenko, D.; Van Tendeloo, G.; Moshchalkov, V.V.
  Title Effect of heat-treatment on luminescence and structure of Ag nanoclusters doped oxyfluoride glasses and implication for fiber drawing Type A1 Journal article
  Year 2012 Publication Optical materials Abbreviated Journal Opt Mater
  Volume 34 Issue 4 Pages 616-621
  Keywords A1 Journal article; Electron microscopy for materials research (EMAT)
  Abstract The effect of heat treatment on the structure and luminescence of Ag nanoclusters doped oxyfluoride glasses was studied and the implication for drawing the corresponding fibers doped with luminescent Ag nanoclusters has been proposed. The heat treatment results, first, in condensation of the Ag nanoclusters into larger Ag nanoparticles and loss of Ag luminescence, and further heat treatment results in precipitation of a luminescent-loss nano- and microcrystalline Ag phases onto the surface of the glass. Thus, the oxyfluoride fiber doped with luminescent Ag nanoclusters was pulled from the viscous glass melt and its attenuation loss was 0.19 dB/cm in the red part of the spectrum; i.e. near to the maximum of Ag nanoclusters luminescence band. The nucleation centers for the Ag nanoclusters in oxyfluoride glasses have been suggested to be the fluorine vacancies and their nanoclusters.
  Address
  Corporate Author Thesis
  Publisher Place of Publication Amsterdam Editor
  Language Wos 000300124500006 Publication Date 2011-10-18
  Series Editor Series Title Abbreviated Series Title
  Series Volume Series Issue Edition
  ISSN (down) 0925-3467; ISBN Additional Links UA library record; WoS full record; WoS citing articles
  Impact Factor 2.238 Times cited 25 Open Access
  Notes Methusalem Approved Most recent IF: 2.238; 2012 IF: 1.918
  Call Number UA @ lucian @ c:irua:93632 Serial 811
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Author Krsmanovic, R.; Bals, S.; Bertoni, G.; Van Tendeloo, G.
  Title Structural characterization of Er-doped Li2O-Al2O3-SiO2 glass ceramics Type A1 Journal article
  Year 2008 Publication Optical materials Abbreviated Journal Opt Mater
  Volume 30 Issue 7 Pages 1183-1188
  Keywords A1 Journal article; Electron microscopy for materials research (EMAT)
  Abstract Particularly favourable properties of glass ceramics are developed on the basis of two key advantages of these materials: the variation of chemical composition and of microstructure. Therefore, detailed structural and chemical information are necessary to get insight in novel glass ceramic materials. We present here two examples of Er-doped Li2O-Al2O3-SiO2, with different quantities of ZrO2, both obtained with sol-gel synthesis. Different transmission electron microscopy techniques: conventional TEM, HRTEM, and EELS are used and the results are compared with those previously obtained with XRD and Rietveld analysis. We also demonstrate the 3D reconstruction, obtained from HAADF-STEM imaging, to determine the morphology of nanosize precipitates in these composites. (c) 2007 Elsevier B.V. All rights reserved.
  Address
  Corporate Author Thesis
  Publisher Place of Publication Amsterdam Editor
  Language Wos 000254419100035 Publication Date 2007-07-11
  Series Editor Series Title Abbreviated Series Title
  Series Volume Series Issue Edition
  ISSN (down) 0925-3467; ISBN Additional Links UA library record; WoS full record; WoS citing articles
  Impact Factor 2.238 Times cited 12 Open Access
  Notes Iap-V1; Esteem Approved Most recent IF: 2.238; 2008 IF: 1.714
  Call Number UA @ lucian @ c:irua:70004 Serial 3219
Permanent link to this record
 

 
Author Amin-Ahmadi, B.; Aashuri, H.
  Title Semisolid structure for M2 high speed steel prepared by cooling slope Type A1 Journal article
  Year 2010 Publication Journal of materials processing technology Abbreviated Journal J Mater Process Tech
  Volume 210 Issue 12 Pages 1632-1635
  Keywords A1 Journal article; Electron microscopy for materials research (EMAT)
  Abstract Effects of cooling slope angle and the temperature of molten metal on the globular structure of M2 high speed steel after holding at the semisolid state have been investigated. The globular structure was achieved by pouring the molten metal at 1595 °C on the ceramic cooling slope with the length of 200 mm and the angle of 25°. The globular structure of M2 high speed steel in the form of rolledannealed and as cast condition after holding at semisolid state has been achieved. The size of globular grains of cooling slope sample was smaller than that of the rolledannealed and as cast samples. Solid particles of rolledannealed sample after holding at semisolid state had better roundness compared with cooling slope sample. Dissolution of carbides in the austenite phase at grain boundaries leads to formation of globular particles in the semisolid state. MC-type and M6C-type eutectic carbides reprecipitate during cooling cycle along grain boundaries.
  Address
  Corporate Author Thesis
  Publisher Place of Publication Amsterdam Editor
  Language Wos 000280498200011 Publication Date 2010-06-02
  Series Editor Series Title Abbreviated Series Title
  Series Volume Series Issue Edition
  ISSN (down) 0924-0136; ISBN Additional Links UA library record; WoS full record; WoS citing articles
  Impact Factor 3.147 Times cited 12 Open Access
  Notes Approved Most recent IF: 3.147; 2010 IF: 1.570
  Call Number UA @ lucian @ c:irua:122042 Serial 2983
Permanent link to this record
 

 
Author Schryvers, D.; Potapov, P.; Santamarta, R.; Tirry, W.
  Title Applications of advanced transmission electron microscopic techniques to Ni-Ti based shape memory materials Type A1 Journal article
  Year 2004 Publication Materials science and engineering: part A: structural materials: properties, microstructure and processing Abbreviated Journal Mat Sci Eng A-Struct
  Volume 378 Issue 1/2 Pages 11-15
  Keywords A1 Journal article; Electron microscopy for materials research (EMAT)
  Abstract
  Address
  Corporate Author Thesis
  Publisher Place of Publication Lausanne Editor
  Language Wos 000223329900003 Publication Date 2004-03-23
  Series Editor Series Title Abbreviated Series Title
  Series Volume Series Issue Edition
  ISSN (down) 0921-5093; ISBN Additional Links UA library record; WoS full record; WoS citing articles
  Impact Factor 3.094 Times cited 6 Open Access
  Notes Approved Most recent IF: 3.094; 2004 IF: 1.445
  Call Number UA @ lucian @ c:irua:48783 Serial 145
Permanent link to this record
 

 
Author Srivastava, A.K.; Yang, Z.; Schryvers, D.; van Hurnbeeck, J.
  Title Effect of annealing on cold-rolled Ni-Ti alloys Type A1 Journal article
  Year 2008 Publication Materials science and engineering: part A: structural materials: properties, microstructure and processing Abbreviated Journal Mat Sci Eng A-Struct
  Volume 481 Issue Si Pages 594-597
  Keywords A1 Journal article; Electron microscopy for materials research (EMAT)
  Abstract
  Address
  Corporate Author Thesis
  Publisher Place of Publication Editor
  Language Wos 000255716100123 Publication Date 2007-06-07
  Series Editor Series Title Abbreviated Series Title
  Series Volume Series Issue Edition
  ISSN (down) 0921-5093; ISBN Additional Links UA library record; WoS full record; WoS citing articles
  Impact Factor 3.094 Times cited 8 Open Access
  Notes Fwo; G0465.05 Approved Most recent IF: 3.094; 2008 IF: 1.806
  Call Number UA @ lucian @ c:irua:69141 Serial 797
Permanent link to this record
 

 
Author Yang, Z.Q.; Schryvers, D.
  Title Electron energy-loss spectroscopy study of NiTi shape memory alloys Type A1 Journal article
  Year 2008 Publication Materials science and engineering: part A: structural materials: properties, microstructure and processing Abbreviated Journal Mat Sci Eng A-Struct
  Volume 481 Issue Pages 214-217
  Keywords A1 Journal article; Electron microscopy for materials research (EMAT)
  Abstract
  Address
  Corporate Author Thesis
  Publisher Place of Publication Editor
  Language Wos 000255716100041 Publication Date 2007-06-11
  Series Editor Series Title Abbreviated Series Title
  Series Volume Series Issue Edition
  ISSN (down) 0921-5093; ISBN Additional Links UA library record; WoS full record; WoS citing articles
  Impact Factor 3.094 Times cited 7 Open Access
  Notes Gao Approved Most recent IF: 3.094; 2008 IF: 1.806
  Call Number UA @ lucian @ c:irua:69156 Serial 934
Permanent link to this record
 

 
Author Bouvier, S.; Benmhenni, N.; Tirry, W.; Gregory, F.; Nixon, M.E.; Cazacu, O.; Rabet, L.
  Title Hardening in relation with microstructure evolution of high purity \alpha-titanium deformed under monotonic and cyclic simple shear loadings at room temperature Type A1 Journal article
  Year 2012 Publication Materials science and engineering: part A: structural materials: properties, microstructure and processing Abbreviated Journal Mat Sci Eng A-Struct
  Volume 535 Issue Pages 12-21
  Keywords A1 Journal article; Engineering sciences. Technology; Electron microscopy for materials research (EMAT)
  Abstract The aim of this paper is to gain understanding of the quasi-static, large strain deformation behavior at room-temperature of high-purity alpha-Ti with an initial split-basal texture. Simple shear tests were conducted along different directions in order to quantify the material's anisotropy and hardening evolution for different strain paths such as monotonic, Bauschinger, and cyclic loadings. The stress-strain curves indicate that the material displays strong anisotropy in the flow behavior. In order to capture the link between microstructure evolution (occurrence of twinning, grain size evolution, etc.) and the macroscopic response, a thoroughly detailed multi-scale characterization using scanning electron microscope (SEM) observations and electron backscattered diffraction (EBSD) analysis was also conducted. Specifically, EBSD analyses indicate that the twin activity and grain fragmentation are responsible for the observed difference between the macroscopic hardening rates corresponding to different directions and loading paths. (C) 2011 Elsevier B.V. All rights reserved.
  Address
  Corporate Author Thesis
  Publisher Place of Publication Lausanne Editor
  Language Wos 000301402400003 Publication Date 2011-12-17
  Series Editor Series Title Abbreviated Series Title
  Series Volume Series Issue Edition
  ISSN (down) 0921-5093; ISBN Additional Links UA library record; WoS full record; WoS citing articles
  Impact Factor 3.094 Times cited 22 Open Access
  Notes Approved Most recent IF: 3.094; 2012 IF: 2.108
  Call Number UA @ lucian @ c:irua:97824 Serial 1410
Permanent link to this record
 

 
Author Tirry, W.; Schryvers, D.
  Title High resolution TEM study of Ni4Ti3 precipitates in austenitic Ni51Ti49 Type A1 Journal article
  Year 2004 Publication Materials science and engineering: part A: structural materials: properties, microstructure and processing Abbreviated Journal Mat Sci Eng A-Struct
  Volume 378 Issue 1/2 Pages 157-160
  Keywords A1 Journal article; Electron microscopy for materials research (EMAT)
  Abstract
  Address
  Corporate Author Thesis
  Publisher Place of Publication Lausanne Editor
  Language Wos 000223329900028 Publication Date 2004-04-10
  Series Editor Series Title Abbreviated Series Title
  Series Volume Series Issue Edition
  ISSN (down) 0921-5093; ISBN Additional Links UA library record; WoS full record; WoS citing articles
  Impact Factor 3.094 Times cited 19 Open Access
  Notes Approved Most recent IF: 3.094; 2004 IF: 1.445
  Call Number UA @ lucian @ c:irua:48785 Serial 1461
Permanent link to this record
 

 
Author Coghe, F.; Tirry, W.; Rabet, L.; Schryvers, D.; Van Houtte, P.
  Title Importance of twinning in static and dynamic compression of a Ti-6Al-4V titanium alloy with an equiaxed microstructure Type A1 Journal article
  Year 2012 Publication Materials science and engineering: part A: structural materials: properties, microstructure and processing Abbreviated Journal Mat Sci Eng A-Struct
  Volume 537 Issue Pages 1-10
  Keywords A1 Journal article; Engineering sciences. Technology; Electron microscopy for materials research (EMAT)
  Abstract Whereas deformation twinning is known to be an important deformation mechanism for hexagonal materials like magnesium and pure titanium, so far almost no literature exists on the twinning behaviour of the Ti-6Al-4V alloy. In this work it was shown that the activation of twinning as a deformation mechanism could have a pronounced effect on the mechanical behaviour of the Ti-6Al-4V alloy. This effect is even more pronounced under dynamic loading conditions. Transmission electron microscopy showed that only the {1 0 1 2}{1 0 1 1} tensile twin system was activated under certain loading conditions. Light-optical microscopy and electron backscatter diffraction data were afterwards used to experimentally determine the twin fractions. The importance of twinning for the texture evolution was also studied. It was shown that even small twin fractions can lead to distinct texture features, especially due to the discrete reorientation of the c-axes. The experimental results were compared to simulated results that were obtained with a viscoplastic self-consistent crystal plasticity code, after experimental validation that twinning can be reliably modelled as a unidirectional slip system. Although good agreement was obtained for the experimental and simulated stress-strain curves, the simulated results concerning twinning correlated well only on a qualitative basis as the simulated twin fractions were systematically higher than the experimental fractions. This seems to strengthen the hypothesis made by other research groups that complete grains might reorient by twinning. (C) 2011 Elsevier B.V. All rights reserved.
  Address
  Corporate Author Thesis
  Publisher Place of Publication Lausanne Editor
  Language Wos 000301473300001 Publication Date 2011-12-21
  Series Editor Series Title Abbreviated Series Title
  Series Volume Series Issue Edition
  ISSN (down) 0921-5093; ISBN Additional Links UA library record; WoS full record; WoS citing articles
  Impact Factor 3.094 Times cited 35 Open Access
  Notes Approved Most recent IF: 3.094; 2012 IF: 2.108
  Call Number UA @ lucian @ c:irua:97818 Serial 1565
Permanent link to this record
 

 
Author Tirry, W.; Schryvers, D.
  Title In situ transmission electron microscopy of stress-induced martensite with focus on martensite twinning Type A1 Journal article
  Year 2008 Publication Materials science and engineering: part A: structural materials: properties, microstructure and processing Abbreviated Journal Mat Sci Eng A-Struct
  Volume 481 Issue Si Pages 420-425
  Keywords A1 Journal article; Electron microscopy for materials research (EMAT)
  Abstract
  Address
  Corporate Author Thesis
  Publisher Place of Publication Editor
  Language Wos 000255716100087 Publication Date 2007-06-07
  Series Editor Series Title Abbreviated Series Title
  Series Volume Series Issue Edition
  ISSN (down) 0921-5093; ISBN Additional Links UA library record; WoS full record; WoS citing articles
  Impact Factor 3.094 Times cited 22 Open Access
  Notes Approved Most recent IF: 3.094; 2008 IF: 1.806
  Call Number UA @ lucian @ c:irua:69139 Serial 1586
Permanent link to this record
 

 
Author Schryvers, D.; Holland-Moritz, D.
  Title Martensitic transformations and microstructures in splat-cooled Ni-Al Type A1 Journal article
  Year 1999 Publication Materials science and engineering: part A: structural materials: properties, microstructure and processing Abbreviated Journal Mat Sci Eng A-Struct
  Volume 273/275 Issue Pages 697-702
  Keywords A1 Journal article; Electron microscopy for materials research (EMAT)
  Abstract
  Address
  Corporate Author Thesis
  Publisher Place of Publication Lausanne Editor
  Language Wos 000084560400122 Publication Date 2002-07-25
  Series Editor Series Title Abbreviated Series Title
  Series Volume Series Issue Edition
  ISSN (down) 0921-5093; ISBN Additional Links UA library record; WoS full record; WoS citing articles
  Impact Factor 3.094 Times cited 6 Open Access
  Notes Approved Most recent IF: 3.094; 1999 IF: 0.943
  Call Number UA @ lucian @ c:irua:29380 Serial 1949
Permanent link to this record
 

 
Author Schryvers, D.; Tirry, W.; Yang, Z.Q.;
  Title Measuring strain fields and concentration gradients around Ni4Ti3 precipitates Type A1 Journal article
  Year 2006 Publication Materials science and engineering A: structural materials properties microstructure and processing Abbreviated Journal Mat Sci Eng A-Struct
  Volume 438 Issue Pages 485-488
  Keywords A1 Journal article; Electron microscopy for materials research (EMAT)
  Abstract
  Address
  Corporate Author Thesis
  Publisher Place of Publication Editor
  Language Wos 000242900900105 Publication Date 2006-07-12
  Series Editor Series Title Abbreviated Series Title
  Series Volume Series Issue Edition
  ISSN (down) 0921-5093; ISBN Additional Links UA library record; WoS full record; WoS citing articles
  Impact Factor 3.094 Times cited 35 Open Access
  Notes Goa Approved Most recent IF: 3.094; 2006 IF: 1.490
  Call Number UA @ lucian @ c:irua:62329 Serial 1969
Permanent link to this record
 

 
Author Tirry, W.; Coghe, F.; Bouvier, S.; Gasperini, M.; Rabet, L.; Schryvers, D.
  Title A multi-scale characterization of deformation twins in Ti6Al4V sheet material deformed by simple shear Type A1 Journal article
  Year 2010 Publication Materials science and engineering: part A: structural materials: properties, microstructure and processing Abbreviated Journal Mat Sci Eng A-Struct
  Volume 527 Issue 16/17 Pages 4136-4145
  Keywords A1 Journal article; Electron microscopy for materials research (EMAT)
  Abstract Ti6Al4V sheet material is subjected to simple shear deformation with strain ratio's of 10%, 30% and 50%. Optical microscopy, transmission electron microscopy and electron backscatter diffraction techniques are applied to study the presence and morphology of deformation twins. Only the View the MathML source type of twins seems to be present with a volume fraction below 1%. These View the MathML source twins show a high density of basal stacking faults of the ABABACAC type identified using atomic resolution transmission electron microscopy. A resolved shear stress analysis shows that twins most often occur on those planes with the highest resolved shear stresses, but that the starting texture is not beneficial for the occurrence of twins. It is further suggested that a transitory strain hardening regime observed around 530 MPa might be related with the onset of twinning.
  Address
  Corporate Author Thesis
  Publisher Place of Publication Lausanne Editor
  Language Wos 000278766800068 Publication Date 2010-03-23
  Series Editor Series Title Abbreviated Series Title
  Series Volume Series Issue Edition
  ISSN (down) 0921-5093; ISBN Additional Links UA library record; WoS full record; WoS citing articles
  Impact Factor 3.094 Times cited 20 Open Access
  Notes Iap Approved Most recent IF: 3.094; 2010 IF: 2.101
  Call Number UA @ lucian @ c:irua:82291 Serial 2212
Permanent link to this record
 

 
Author Rotaru, G.-M.; Schryvers, D.
  Title New (3(3)under-bar) long-period microtwin variant in the martensitic phase of the PtTi alloy Type A1 Journal article
  Year 2008 Publication Materials science and engineering: part A: structural materials: properties, microstructure and processing Abbreviated Journal Mat Sci Eng A-Struct
  Volume 481 Issue Si Pages 437-441
  Keywords A1 Journal article; Electron microscopy for materials research (EMAT)
  Abstract
  Address
  Corporate Author Thesis
  Publisher Place of Publication Editor
  Language Wos 000255716100090 Publication Date 2007-06-07
  Series Editor Series Title Abbreviated Series Title
  Series Volume Series Issue Edition
  ISSN (down) 0921-5093; ISBN Additional Links UA library record; WoS full record; WoS citing articles
  Impact Factor 3.094 Times cited 3 Open Access
  Notes Multimat Approved Most recent IF: 3.094; 2008 IF: 1.806
  Call Number UA @ lucian @ c:irua:69140 Serial 2300
Permanent link to this record
 

 
Author Tirry, W.; Schryvers, D.; Jorissen, K.; Lamoen, D.
  Title Quantitative determination of the crystal structure of Ni4Ti3 precipitates Type A1 Journal article
  Year 2006 Publication Materials science and engineering: part A: structural materials: properties, microstructure and processing Abbreviated Journal Mat Sci Eng A-Struct
  Volume 438 Issue Pages 517-520
  Keywords A1 Journal article; Electron microscopy for materials research (EMAT)
  Abstract
  Address
  Corporate Author Thesis
  Publisher Place of Publication Lausanne Editor
  Language Wos 000242900900112 Publication Date 2006-07-12
  Series Editor Series Title Abbreviated Series Title
  Series Volume Series Issue Edition
  ISSN (down) 0921-5093; ISBN Additional Links UA library record; WoS full record; WoS citing articles
  Impact Factor 3.094 Times cited 7 Open Access
  Notes Mrtn-Ct-2004-505226 Approved Most recent IF: 3.094; 2006 IF: 1.490
  Call Number UA @ lucian @ c:irua:61577 Serial 2752
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