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Author Leenaerts, O.; Partoens, B.; Peeters, F.M.
Title Graphene: a perfect nanoballoon Type A1 Journal article
Year 2008 Publication Applied physics letters Abbreviated Journal Appl Phys Lett
Volume 93 Issue 19 Pages 193107,1-193107,3
Keywords A1 Journal article; Condensed Matter Theory (CMT)
Abstract We have performed a first-principles density functional theory investigation of the penetration of helium atoms through a graphene monolayer with defects. The relaxation of the graphene layer caused by the incoming helium atoms does not have a strong influence on the height of the energy barriers for penetration. For defective graphene layers, the penetration barriers decrease exponentially with the size of the defects but they are still sufficiently high that very large defects are needed to make the graphene sheet permeable for small atoms and molecules. This makes graphene a very promising material for the construction of nanocages and nanomembranes.
Address
Corporate Author Thesis
Publisher American Institute of Physics Place of Publication New York, N.Y. Editor
Language Wos 000260944100090 Publication Date 2008-11-12
Series Editor Series Title Abbreviated Series Title
Series Volume Series Issue Edition
ISSN (up) 0003-6951; ISBN Additional Links UA library record; WoS full record; WoS citing articles
Impact Factor 3.411 Times cited 295 Open Access
Notes This work was supported by the Flemish Science Foundation (FWO-Vl), the NOI-BOF of the University of Antwerp, and the Belgian Science Policy (IAP). Approved Most recent IF: 3.411; 2008 IF: 3.726
Call Number UA @ lucian @ c:irua:73196 Serial 1368
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Author Leenaerts, O.; Partoens, B.; Peeters, F.M.
Title Paramagnetic adsorbates on graphene: a charge transfer analysis Type A1 Journal article
Year 2008 Publication Applied physics letters Abbreviated Journal Appl Phys Lett
Volume 92 Issue 24 Pages 243125,1-3
Keywords A1 Journal article; Condensed Matter Theory (CMT)
Abstract We introduce a modified version of the Hirshfeld charge analysis method and demonstrate its accurateness by calculating the charge transfer between the paramagnetic molecule NO2 and graphene. The charge transfer between paramagnetic molecules and a graphene layer as calculated with ab initio methods can crucially depend on the size of the supercell used in the calculation. This has important consequences for adsorption studies involving paramagnetic molecules such as NO2 physisorbed on graphene or on carbon nanotubes. © 2008 American Institute of Physics.
Address
Corporate Author Thesis
Publisher American Institute of Physics Place of Publication New York, N.Y. Editor
Language Wos 000256934900099 Publication Date 2008-06-24
Series Editor Series Title Abbreviated Series Title
Series Volume Series Issue Edition
ISSN (up) 0003-6951; ISBN Additional Links UA library record; WoS full record; WoS citing articles
Impact Factor 3.411 Times cited 79 Open Access
Notes This work was supported by the Flemish Science Foundation (FWO-Vl), the NOI-BOF of the University of Antwerp, and the Belgian Science Policy (IAP). Discussions with C. Van Alsenoy are gratefully acknowledged. Approved Most recent IF: 3.411; 2008 IF: 3.726
Call Number UA @ lucian @ c:irua:69619 Serial 2552
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Author Masir, M.R.; Vasilopoulos, P.; Peeters, F.M.
Title Wavevector filtering through single-layer and bilayer graphene with magnetic barrier structures Type A1 Journal article
Year 2008 Publication Applied physics letters Abbreviated Journal Appl Phys Lett
Volume 93 Issue 24 Pages 242103,1-242103,3
Keywords A1 Journal article; Condensed Matter Theory (CMT)
Abstract We show that the angular range of the transmission through magnetic barrier structures can be efficiently controlled in single-layer and bilayer graphenes and this renders the structures efficient wavevector filters. As the number of magnetic barriers increases, this range shrinks, the gaps in the transmission versus energy become wider, and the conductance oscillates with the Fermi energy.
Address
Corporate Author Thesis
Publisher American Institute of Physics Place of Publication New York, N.Y. Editor
Language Wos 000261896400032 Publication Date 2008-12-15
Series Editor Series Title Abbreviated Series Title
Series Volume Series Issue Edition
ISSN (up) 0003-6951; ISBN Additional Links UA library record; WoS full record; WoS citing articles
Impact Factor 3.411 Times cited 91 Open Access
Notes Approved Most recent IF: 3.411; 2008 IF: 3.726
Call Number UA @ lucian @ c:irua:75931 Serial 3910
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Author Felten, A.; Ghijsen, J.; Pireaux, J.-J.; Whelan, C.M.; Liang, D.; Van Tendeloo, G.; Bittencourt, C.
Title Photoemission study of CF4 rf-plasma treated multi-wall carbon nanotubes Type A1 Journal article
Year 2008 Publication Carbon Abbreviated Journal Carbon
Volume 46 Issue 10 Pages 1271-1275
Keywords A1 Journal article; Electron microscopy for materials research (EMAT)
Abstract Multi-wall carbon nanotubes (MWCNTs) were exposed to a CF4 rf-plasma. X-ray photoelectron spectroscopy analysis shows that the treatment effectively grafts fluorine atoms onto the MWCNTs. The fluorine atomic concentration and the nature of the CF bond (semi-ionic or covalent) can be tuned by varying the exposure time. Ultraviolet photoelectron spectroscopy analysis confirms that the valence electronic states are altered by the grafting of fluorine atoms. Characterization with high-resolution transmission electron microscopy reveals that while the plasma treatment does not induce significant etching impact on the CNT-surface, it does increase the number of active sites for gold cluster formation.
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Corporate Author Thesis
Publisher Place of Publication Oxford Editor
Language Wos 000258987500001 Publication Date 2008-05-16
Series Editor Series Title Abbreviated Series Title
Series Volume Series Issue Edition
ISSN (up) 0008-6223; ISBN Additional Links UA library record; WoS full record; WoS citing articles
Impact Factor 6.337 Times cited 21 Open Access
Notes Approved Most recent IF: 6.337; 2008 IF: 4.373
Call Number UA @ lucian @ c:irua:76481 Serial 2612
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Author Bittencourt, C.; Hecq, M.; Felten, A.; Pireaux, J.J.; Ghijsen, J.; Felicissimo, M.P.; Rudolf, P.; Drube, W.; Ke, X.; Van Tendeloo, G.
Title Platinumcarbon nanotube interaction Type A1 Journal article
Year 2008 Publication Chemical physics letters Abbreviated Journal Chem Phys Lett
Volume 462 Issue 4/6 Pages 260-264
Keywords A1 Journal article; Electron microscopy for materials research (EMAT)
Abstract The interaction between evaporated Pt and pristine or oxygen-plasma-treated multiwall carbon nanotubes (CNTs) is investigated. Pt is found to nucleate at defect sites, whether initially present or introduced by oxygen plasma treatment. The plasma treatment induces a uniform dispersion of Pt nanoparticles at the CNT surface. The absence of additional features in the C 1s core level spectrum indicates that no mixed PtC phase is formed. The formation of COPt bonds at the cluster-CNT interface is suggested to reduce the electronic interaction between Pt nanoparticles and the CNT surface.
Address
Corporate Author Thesis
Publisher Place of Publication Amsterdam Editor
Language Wos 000258830900025 Publication Date 2008-07-30
Series Editor Series Title Abbreviated Series Title
Series Volume Series Issue Edition
ISSN (up) 0009-2614; ISBN Additional Links UA library record; WoS full record; WoS citing articles
Impact Factor 1.815 Times cited 62 Open Access
Notes Pai Approved Most recent IF: 1.815; 2008 IF: 2.169
Call Number UA @ lucian @ c:irua:76489 Serial 2652
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Author Paulussen, S.; Sels, B.; Bogaerts, A.; Paul, J.
Title Een tweede leven voor broeikasgassen? Type A2 Journal article
Year 2008 Publication Het ingenieursblad : maandblad van de Koninklijke Vlaamse Ingenieursvereniging KVIV Abbreviated Journal
Volume 77 Issue 3 Pages 16-20
Keywords A2 Journal article; Plasma Lab for Applications in Sustainability and Medicine – Antwerp (PLASMANT)
Abstract
Address
Corporate Author Thesis
Publisher Place of Publication Antwerpen Editor
Language Wos Publication Date 0000-00-00
Series Editor Series Title Abbreviated Series Title
Series Volume Series Issue Edition
ISSN (up) 0020-1235 ISBN Additional Links UA library record
Impact Factor Times cited Open Access
Notes Approved Most recent IF: NA
Call Number UA @ lucian @ c:irua:82308 Serial 3765
Permanent link to this record
 
 
Author Terzano, R.; al Chami, Z.; Vekemans, B.; Janssens, K.; Miano, T.; Ruggiero, P.
Title Zinc distribution and speciation within rocket plants (Eruca vesicaria L. Cavalieri) grown on a polluted soil amended with compost as determined by XRF microtomography and Micro-Xanes Type A1 Journal article
Year 2008 Publication Journal of agricultural and food chemistry Abbreviated Journal J Agr Food Chem
Volume 56 Issue 9 Pages 3222-3231
Keywords A1 Journal article; AXES (Antwerp X-ray Analysis, Electrochemistry and Speciation)
Abstract
Address
Corporate Author Thesis
Publisher Place of Publication Editor
Language Wos 000255655600050 Publication Date 2008-04-15
Series Editor Series Title Abbreviated Series Title
Series Volume Series Issue Edition
ISSN (up) 0021-8561 ISBN Additional Links UA library record; WoS full record; WoS citing articles
Impact Factor 3.154 Times cited 68 Open Access
Notes Approved Most recent IF: 3.154; 2008 IF: 2.562
Call Number UA @ admin @ c:irua:69147 Serial 5925
Permanent link to this record
 
 
Author Kolev, I.; Bogaerts, A.
Title Calculation of gas heating in a dc sputter magnetron Type A1 Journal article
Year 2008 Publication Journal of applied physics Abbreviated Journal J Appl Phys
Volume 104 Issue 9 Pages 093301,1-093301,8
Keywords A1 Journal article; Plasma Lab for Applications in Sustainability and Medicine – Antwerp (PLASMANT)
Abstract The effect of gas heating in laboratory sputter magnetrons is investigated by means of numerical modeling. The model is two-dimensional in the coordinate space and three-dimensional in the velocity space based on the particle-in-cellMonte Carlo collisions technique. It is expanded in a way that allows the inclusion of the neutral plasma particles (fast gas atoms and sputtered atoms), which makes it possible to calculate the gas temperature and its influence on the discharge behavior in a completely self-consistent way. The results of the model are compared to experimental measurements and to other existing simulation results. The results show that gas heating is pressure dependent (rising with the increase in the gas pressure) and should be taken into consideration at pressures above 10 mTorr.
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Corporate Author Thesis
Publisher American Institute of Physics Place of Publication New York, N.Y. Editor
Language Wos 000260941700017 Publication Date 2008-11-07
Series Editor Series Title Abbreviated Series Title
Series Volume Series Issue Edition
ISSN (up) 0021-8979; ISBN Additional Links UA library record; WoS full record; WoS citing articles
Impact Factor 2.068 Times cited 19 Open Access
Notes Approved Most recent IF: 2.068; 2008 IF: 2.201
Call Number UA @ lucian @ c:irua:71286 Serial 267
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Author Bultinck, E.; Kolev, I.; Bogaerts, A.; Depla, D.
Title The importance of an external circuit in a particle-in-cell/Monte Carlo collisions model for a direct current planar magnetron Type A1 Journal article
Year 2008 Publication Journal of applied physics Abbreviated Journal J Appl Phys
Volume 103 Issue 1 Pages 013309,1-9
Keywords A1 Journal article; Plasma Lab for Applications in Sustainability and Medicine – Antwerp (PLASMANT)
Abstract
Address
Corporate Author Thesis
Publisher American Institute of Physics Place of Publication New York, N.Y. Editor
Language Wos 000252890700024 Publication Date 2008-01-15
Series Editor Series Title Abbreviated Series Title
Series Volume Series Issue Edition
ISSN (up) 0021-8979; ISBN Additional Links UA library record; WoS full record; WoS citing articles
Impact Factor 2.068 Times cited 29 Open Access
Notes Approved Most recent IF: 2.068; 2008 IF: 2.201
Call Number UA @ lucian @ c:irua:66176 Serial 1564
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Author de Backer, J.W.; Vos, W.G.; Devolder, A.; Verhulst, S.L.; Germonpré, P.; Wuyts, F.L.; Parizel, P.M.; de Backer, W.
Title Computational fluid dynamics can detect changes in airway resistance in asthmatics after acute bronchodilation Type A1 Journal article
Year 2008 Publication Journal of biomechanics Abbreviated Journal J Biomech
Volume 41 Issue 1 Pages 106-113
Keywords A1 Journal article; Condensed Matter Theory (CMT); Antwerp Surgical Training, Anatomy and Research Centre (ASTARC); Laboratory Experimental Medicine and Pediatrics (LEMP)
Abstract
Address
Corporate Author Thesis
Publisher Place of Publication New York, N.Y. Editor
Language Wos 000253062100014 Publication Date 2007-08-15
Series Editor Series Title Abbreviated Series Title
Series Volume Series Issue Edition
ISSN (up) 0021-9290; ISBN Additional Links UA library record; WoS full record; WoS citing articles
Impact Factor 2.664 Times cited 53 Open Access
Notes Approved Most recent IF: 2.664; 2008 IF: 2.784
Call Number UA @ lucian @ c:irua:64859 Serial 456
Permanent link to this record
 
 
Author Lin, K.; Pescarmona, P.P.; Vandepitte, H.; Liang, D.; Van Tendeloo, G.; Jacobs, P.A.
Title Synthesis and catalytic activity of Ti-MCM-41 nanoparticles with highly active titanium sites Type A1 Journal article
Year 2008 Publication Journal of catalysis Abbreviated Journal J Catal
Volume 254 Issue 1 Pages 64-70
Keywords A1 Journal article; Electron microscopy for materials research (EMAT)
Abstract Ti-MCM-41 nanoparticles 80-160 nm in diameter (Ti-MCM-41 NP) were successfully prepared by a dilute solution route in sodium hydroxide medium at ambient temperature. Ti-MCM-41 NP were characterized by X-ray diffraction, nitrogen adsorption/desorption isotherms, SEM, TEM. FT-IR, and UV-vis spectroscopy. The characterization results showed the existence of highly ordered hexagonal mesoporous structure and tetrahedral Ti species in Ti-MCM-41 NP. In the epoxidation of cyclohexene with aqueous H2O2, Ti-MCM-41 NP displayed higher conversion and initial reaction rate than a Ti-MCM-41 sample with normal particle size (Ti-MCM-41 LP). Diffusion of the reactants was accelerated and the accessibility to the catalytic Ti species was enhanced in the shorter channels in Ti-MCM-41 NP samples. Ti-MCM-41 NP showed much higher selectivity for cyclohexene oxide compared with Ti-MCM-41 LP, suggesting reduced hydrolysis of cyclohexene oxide with water in the former case. The increased selectivity for cyclohexene oxide can be attributed to the lower concentration of residual surface silanols in Ti-MCM-41 NP and the shorter residence time of epoxide in the shorter mesoporous channels. Ti-MCM-41 NP also appears to be a suitable catalyst in the epoxidation of a bulky substrate, like cholesterol, with tert-butyl hydroperoxide. (c) 2007 Elsevier Inc. All rights reserved.
Address
Corporate Author Thesis
Publisher Place of Publication San Diego, Calif. Editor
Language Wos 000253646100006 Publication Date 2008-01-30
Series Editor Series Title Abbreviated Series Title
Series Volume Series Issue Edition
ISSN (up) 0021-9517; ISBN Additional Links UA library record; WoS full record; WoS citing articles
Impact Factor 6.844 Times cited 52 Open Access
Notes Approved Most recent IF: 6.844; 2008 IF: 5.167
Call Number UA @ lucian @ c:irua:103092 Serial 3409
Permanent link to this record
 
 
Author Dirtu, A.C.; Ravindra, K.; Roosens, L.; Van Grieken, R.; Neels, H.; Blust, R.; Covaci, A.
Title Fast analysis of decabrominated diphenyl ether using low-pressure gas chromatography.electron-capture negative ionization mass spectrometry Type A1 Journal article
Year 2008 Publication Journal of chromatography : A Abbreviated Journal
Volume 1186 Issue Pages 295-301
Keywords A1 Journal article; AXES (Antwerp X-ray Analysis, Electrochemistry and Speciation); Toxicological Centre
Abstract
Address
Corporate Author Thesis
Publisher Place of Publication Editor
Language Wos 000254884700024 Publication Date 2007-07-23
Series Editor Series Title Abbreviated Series Title
Series Volume Series Issue Edition
ISSN (up) 0021-9673 ISBN Additional Links UA library record; WoS full record; WoS citing articles
Impact Factor Times cited Open Access
Notes Approved no
Call Number UA @ admin @ c:irua:67546 Serial 7957
Permanent link to this record
 
 
Author Montoya, E.; Bals, S.; Van Tendeloo, G.
Title Redeposition and differential sputtering of La in transmission electron microscopy samples of LaAIO3/SrTiO3 multilayers prepared by focused ion beam Type A1 Journal article
Year 2008 Publication Journal of microscopy Abbreviated Journal J Microsc-Oxford
Volume 231 Issue 3 Pages 359-363
Keywords A1 Journal article; Electron microscopy for materials research (EMAT)
Abstract
Address
Corporate Author Thesis
Publisher Place of Publication Oxford Editor
Language Wos 000259611000001 Publication Date 2008-08-28
Series Editor Series Title Abbreviated Series Title
Series Volume Series Issue Edition
ISSN (up) 0022-2720;1365-2818; ISBN Additional Links UA library record; WoS full record
Impact Factor 1.692 Times cited Open Access
Notes The authors are grateful to M. Huijben and G. Rijnders of the MESA+ group at the University of Twente (NI) for the growth of the multilayers. This work has been performed under the Interuniversity Attraction Poles programme – Belgian State Belgian Science Policy. The authors acknowledge financial support from the European Union under the framework 6 program under a contract for an Integrated Infrastructure initiative. Part of this work was performed with financial support from the European Union under the framework 6 programme, under a contract for an Integrated Infrastructure Initiative (Reference No. 02601.9 ESTEEM). Approved Most recent IF: 1.692; 2008 IF: 1.409
Call Number UA @ lucian @ c:irua:76522 Serial 2849
Permanent link to this record
 
 
Author Liu, S.; Rao, J.; Sui, X.; Cool, P.; Vansant, E.F.; Van Tendeloo, G.; Cheng, X.
Title Preparation of hollow silica spheres with different mesostructures Type A1 Journal article
Year 2008 Publication Journal of non-crystalline solids Abbreviated Journal J Non-Cryst Solids
Volume 354 Issue 10/11 Pages 826-830
Keywords A1 Journal article; Laboratory of adsorption and catalysis (LADCA); Electron microscopy for materials research (EMAT)
Abstract Hollow silica spheres were quickly synthesized by an octylamine (OA) templating method using tetraethyl orthosilicate (TEOS) as the silica source. N2-sorption results indicate that the hollow spheres have high surface areas and pore volumes. XRD and TEM measurements reveal that the structure of the hollow spheres depends on the amount of TEOS used in the synthesis. When low amount of TEOS is added, the template-containing precursor spheres depict an XRD pattern with two peaks, which can be indexed to a lamellar phase. After the removal of the template, the obtained hollow spheres show no diffraction peaks in the XRD pattern, suggesting that the nanopores in the silica shells are disordered. If increasing the amount of TEOS, either the uncalcined or the calcined sample gives an XRD pattern with a single diffraction peak. The mesostructure of these hollow silica spheres is typically as HMS materials. TGA analyses suggest that the interaction between the silica species and surfactant is stronger in the latter case.
Address
Corporate Author Thesis
Publisher Place of Publication Amsterdam Editor
Language Wos 000253216700003 Publication Date 2007-09-17
Series Editor Series Title Abbreviated Series Title
Series Volume Series Issue Edition
ISSN (up) 0022-3093; ISBN Additional Links UA library record; WoS full record; WoS citing articles
Impact Factor 2.124 Times cited 26 Open Access
Notes Gao Approved Most recent IF: 2.124; 2008 IF: 1.449
Call Number UA @ lucian @ c:irua:72018 Serial 2703
Permanent link to this record
 
 
Author Stefaniak, E.A.; Sajó, I.; Alsecz, A.; Worobiec, A.; Máthé, Z.; Török, S.; Van Grieken, R.
Title Recognition of uranium oxides in soil particulate matter by means of ì-Raman spectrometry Type A1 Journal article
Year 2008 Publication Journal of nuclear materials Abbreviated Journal
Volume 381 Issue Pages 278-283
Keywords A1 Journal article; Laboratory Experimental Medicine and Pediatrics (LEMP); AXES (Antwerp X-ray Analysis, Electrochemistry and Speciation)
Abstract Soil samples from an abandoned uranium mine have been investigated in order to determine the molecular phases of uranium compounds. The experiments were carried out with soil particulate matter, collected randomly from the area of the formerly exploited ore. To select the particles rich with uranium, scanning electron microscopy with energy-dispersive X-ray attachment (SEM/EDX) was applied first. Afterwards, the particles were relocated and measured by l-Raman spectrometry (MRS). Residues of the main deposit, uraninite UO2, were detected, along with its alteration products. In terms of Raman scattering properties, uranium oxides are quite sensitive to the laser beam wavelength, which results in very specific features of their Raman spectra. In this paper the Raman spectra of uranium oxides of different origin and oxidation states, measured with 514 and 785 nm lasers, are also presented
Address
Corporate Author Thesis
Publisher Place of Publication Editor
Language Wos 000261347800010 Publication Date 2008-09-18
Series Editor Series Title Abbreviated Series Title
Series Volume Series Issue Edition
ISSN (up) 0022-3115 ISBN Additional Links UA library record; WoS full record; WoS citing articles
Impact Factor Times cited Open Access
Notes Approved no
Call Number UA @ admin @ c:irua:71079 Serial 8460
Permanent link to this record
 
 
Author Bultinck, E.; Bogaerts, A.
Title The effect of the magnetic field strength on the sheath region of a dc magnetron discharge Type A1 Journal article
Year 2008 Publication Journal of physics: D: applied physics Abbreviated Journal J Phys D Appl Phys
Volume 41 Issue Pages 202007,1-5
Keywords A1 Journal article; Plasma Lab for Applications in Sustainability and Medicine – Antwerp (PLASMANT)
Abstract A 2d3v particle-in-cell/Monte Carlo collisions model was applied to study the influence of the magnetic field strength on the cathode sheath region of a direct current (dc) magnetron discharge. When applying a magnetic field of 520-730 G, the cathode sheath width decreases with magnetic field strength, whereas, if a stronger magnetic field is applied (i. e. from 730 to 2600 G), the sheath width increases. This is explained by studying the structure of the sheath in different magnetic field strengths in terms of the electron and ion densities. The consequences of sheath structure on the sputter deposition process are also investigated. It is found that the magnetic field strength can control the erosion profile and the sputter rate.
Address
Corporate Author Thesis
Publisher Place of Publication London Editor
Language Wos 000260131700007 Publication Date 2008-10-02
Series Editor Series Title Abbreviated Series Title
Series Volume Series Issue Edition
ISSN (up) 0022-3727;1361-6463; ISBN Additional Links UA library record; WoS full record; WoS citing articles
Impact Factor 2.588 Times cited 16 Open Access
Notes Approved Most recent IF: 2.588; 2008 IF: 2.104
Call Number UA @ lucian @ c:irua:70630 Serial 847
Permanent link to this record
 
 
Author Ruelle, B.; Felten, A.; Ghijsen, J.; Drube, W.; Johnson, R.L.; Liang, D.; Erni, R.; Van Tendeloo, G.; Dubois, P.; Hecq, M.; Bittencourt, C.;
Title Functionalization of MWCNTs with atomic nitrogen : electronic structure Type A1 Journal article
Year 2008 Publication Journal of physics: D: applied physics Abbreviated Journal J Phys D Appl Phys
Volume 41 Issue 4 Pages 045202-45204
Keywords A1 Journal article; Electron microscopy for materials research (EMAT)
Abstract The changes induced by exposing multi-walled carbon nanotubes (CNTs) to atomic nitrogen were analysed by high-resolution transmission electron microscopy (HRTEM), x-ray and ultraviolet photoelectron spectroscopy. It was found that the atomic nitrogen generated by a microwave plasma effectively grafts chemical groups onto the CNT surface altering the density of valence electronic states. HRTEM showed that the exposure to atomic nitrogen does not significantly damage the CNT surface.
Address
Corporate Author Thesis
Publisher Place of Publication London Editor
Language Wos 000253177900018 Publication Date 2008-01-29
Series Editor Series Title Abbreviated Series Title
Series Volume Series Issue Edition
ISSN (up) 0022-3727;1361-6463; ISBN Additional Links UA library record; WoS full record; WoS citing articles
Impact Factor 2.588 Times cited 16 Open Access
Notes Approved Most recent IF: 2.588; 2008 IF: 2.104
Call Number UA @ lucian @ c:irua:102633 Serial 1306
Permanent link to this record
 
 
Author Mao, M.; Benedikt, J.; Consoli, A.; Bogaerts, A.
Title New pathways for nanoparticle formation in acetylene dusty plasmas: a modelling investigation and comparison with experiments Type A1 Journal article
Year 2008 Publication Journal of physics: D: applied physics Abbreviated Journal J Phys D Appl Phys
Volume 41 Issue Pages
Keywords A1 Journal article; Plasma Lab for Applications in Sustainability and Medicine – Antwerp (PLASMANT)
Abstract In this paper, the initial mechanisms of nanoparticle formation and growth in radiofrequency acetylene (C2H2) plasmas are investigated by means of a comprehensive self-consistent one-dimensional (1D) fluid model. This model is an extension of the 1D fluid model, developed earlier by De Bleecker et al. Based on the comparison of our previous results with available experimental data for acetylene plasmas in the literature, some new mechanisms for negative ion formation and growth are proposed. Possible routes are considered for the formation of larger (linear and branched) hydrocarbons C2nH2 (n = 3, 4, 5), which contribute to the generation of C2nH− anions (n = 3, 4, 5) due to dissociative electron attachment. Moreover, the vinylidene anion (H2CC−) and higher anions (n = 24) are found to be important plasma species.
Address
Corporate Author Thesis
Publisher Place of Publication London Editor
Language Wos 000260738100024 Publication Date 2008-10-24
Series Editor Series Title Abbreviated Series Title
Series Volume Series Issue Edition
ISSN (up) 0022-3727;1361-6463; ISBN Additional Links UA library record; WoS full record; WoS citing articles
Impact Factor 2.588 Times cited 47 Open Access
Notes Approved Most recent IF: 2.588; 2008 IF: 2.104
Call Number UA @ lucian @ c:irua:71018 Serial 2330
Permanent link to this record
 
 
Author Eckert, M.; Neyts, E.; Bogaerts, A.
Title On the reaction behaviour of hydrocarbon species at diamond (1 0 0) and (1 1 1) surfaces: a molecular dynamics investigation Type A1 Journal article
Year 2008 Publication Journal of physics: D: applied physics Abbreviated Journal J Phys D Appl Phys
Volume 41 Issue Pages 032006,1-3
Keywords A1 Journal article; Plasma Lab for Applications in Sustainability and Medicine – Antwerp (PLASMANT)
Abstract
Address
Corporate Author Thesis
Publisher Place of Publication London Editor
Language Wos 000253177800006 Publication Date 2008-01-09
Series Editor Series Title Abbreviated Series Title
Series Volume Series Issue Edition
ISSN (up) 0022-3727;1361-6463; ISBN Additional Links UA library record; WoS full record; WoS citing articles
Impact Factor 2.588 Times cited 17 Open Access
Notes Approved Most recent IF: 2.588; 2008 IF: 2.104
Call Number UA @ lucian @ c:irua:66107 Serial 2449
Permanent link to this record
 
 
Author Tinck, S.; Boullart, W.; Bogaerts, A.
Title Simulation of an Ar/Cl2 inductively coupled plasma: study of the effect of bias, power and pressure and comparison with experiments Type A1 Journal article
Year 2008 Publication Journal of physics: D: applied physics Abbreviated Journal J Phys D Appl Phys
Volume 41 Issue 6 Pages 065207,1-14
Keywords A1 Journal article; Plasma Lab for Applications in Sustainability and Medicine – Antwerp (PLASMANT)
Abstract A hybrid model, called the hybrid plasma equipment model, was used to study Ar/Cl(2) inductively coupled plasmas used for the etching of Si. The effects of substrate bias, source power and gas pressure on the plasma characteristics and on the fluxes and energies of plasma species bombarding the substrate were observed. A comparison with experimentally measured etch rates was made to investigate how the etch process is influenced and which plasma species mainly account for the etch process. First, the general plasma characteristics are investigated at the following operating conditions: 10% Ar 90% Cl(2) gas mixture, 5mTorr total gas pressure, 100 sccm gas flow rate, 250W source power, -200V dc bias at the substrate electrode and an operating frequency of 13.56MHz applied to the coil and to the substrate electrode. Subsequently, the pressure is varied from 5 to 80mTorr, the substrate bias from -100 to -300V and the source power from 250 to 1000W. Increasing the total gas pressure results in a decrease of the etch rate and a less anisotropic flux to the substrate due to more collisions of the ions in the sheath. Increasing the substrate bias has an effect on the energy of the ions bombarding the substrate and to a lesser extent on the magnitude of the ion flux. When source power is increased, it was found that, not the energy, but the magnitude of the ion flux is increased. The etch rate was more influenced by a variation of the substrate bias than by a variation of the source power, at these operating conditions. These results suggest that the etch process is mainly affected by the energy of the ions bombarding the substrate and the magnitude of the ion flux, and to a lesser extent by the magnitude of the radical flux.
Address
Corporate Author Thesis
Publisher Place of Publication London Editor
Language Wos 000254153900022 Publication Date 2008-02-27
Series Editor Series Title Abbreviated Series Title
Series Volume Series Issue Edition
ISSN (up) 0022-3727;1361-6463; ISBN Additional Links UA library record; WoS full record; WoS citing articles
Impact Factor 2.588 Times cited 31 Open Access
Notes Approved Most recent IF: 2.588; 2008 IF: 2.104
Call Number UA @ lucian @ c:irua:67019 Serial 3010
Permanent link to this record
 
 
Author Lepoittevin, C.; Malo, S.; Barrier, N.; Nguyen, N.; Van Tendeloo, G.; Hervieu, M.
Title Long-range ordering in the Bi1-xAexFeO3-x/2 perovskites: Bi1/3Sr2/3FeO2.67 and Bi1/2Ca1/2FeO2.75 Type A1 Journal article
Year 2008 Publication Journal of solid state chemistry Abbreviated Journal J Solid State Chem
Volume 181 Issue 10 Pages 2601-2609
Keywords A1 Journal article; Electron microscopy for materials research (EMAT)
Abstract Two-ordered perovskites, Bi1/3Sr2/3FeO2.67 and Bi1/2Ca1/2FeO2.75, have been stabilized and characterized by transmission electron microscopy, Mössbauer spectroscopy and X-ray powder diffraction techniques. They both exhibit orthorhombic superstructures, one with a≈b≈2ap and c≈3ap (S.G.: Pb2n or Pbmn) for the Sr-based compound and one with a≈b≈2ap and c≈8ap (S.G.: B222, Bmm2, B2mm or Bmmm) for the Ca-based one. The high-resolution transmission electron microscopy (HRTEM) images evidence the existence of one deficient [FeOx]∞ layer, suggesting that Bi1/3Sr2/3FeO2.67 and Bi1/2Ca1/2FeO2.75 behave differently compared to their Ln-based homolog. The HAADF-STEM images allow to propose a model of cation ordering on the A sites of the perovskite. The Mössbauer analyses confirm the trivalent state of iron and its complex environment with three types of coordination. Both compounds exhibit a high value of resistivity and the inverse molar susceptibility versus temperature curves evidence a magnetic transition at about 730 K for the Bi1/3Sr2/3FeO2.67 and a smooth reversible transition between 590 and 650 K for Bi1/2Ca1/2FeO2.75.
Address
Corporate Author Thesis
Publisher Place of Publication London Editor
Language Wos 000260441000008 Publication Date 2008-06-08
Series Editor Series Title Abbreviated Series Title
Series Volume Series Issue Edition
ISSN (up) 0022-4596; ISBN Additional Links UA library record; WoS full record; WoS citing articles
Impact Factor 2.299 Times cited 27 Open Access
Notes Esteem 026019 Approved Most recent IF: 2.299; 2008 IF: 1.910
Call Number UA @ lucian @ c:irua:75663 Serial 1839
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Author Shpanchenko, R.V.; Tsirlin, A.A.; Kondakova, E.S.; Antipov, E.V.; Bougerol, C.; Hadermann, J.; Van Tendeloo, G.; Sakurai, H.; Takayama-Muromachi, E.
Title New germanates RCrGeO5 (R=NdEr, Y): synthesis, structure, and properties Type A1 Journal article
Year 2008 Publication Journal of solid state chemistry Abbreviated Journal J Solid State Chem
Volume 181 Issue 9 Pages 2433-2441
Keywords A1 Journal article; Electron microscopy for materials research (EMAT)
Abstract The new complex germanates RCrGeO5 (R=NdEr, Y) have been synthesized and investigated by means of X-ray powder diffraction, electron microscopy, magnetic susceptibility and specific heat measurements. All the compounds are isostructural and crystallize in the orthorhombic symmetry, space group Pbam, and Z=4. The crystal structure of RCrGeO5, as refined using X-ray powder diffraction data, includes infinite chains built by edge-sharing Cr+3O6 octahedra with two alternating Cr−Cr distances. The chains are combined into a three-dimensional framework by Ge2O8 groups consisting of two edge-linked square pyramids oriented in opposite directions. The resulting framework contains pentagonal channels where rare-earth elements are located. Thus, RCrGeO5 germanates present new examples of RMn2O5-type compounds and show ordering of Cr+3 and Ge+4 cations. Electron diffraction as well as high-resolution electron microscopy confirm the structure solution. Magnetic susceptibility data for R=Nd, Sm, and Eu are qualitatively consistent with the presence of isolated 3d (antiferromagnetically coupled Cr+3 cations) and 4f (R+3) spin subsystems in the RCrGeO5 compounds. NdCrGeO5 undergoes long-range magnetic ordering at 2.6 K, while SmCrGeO5 and EuCrGeO5 do not show any phase transitions down to 2 K.
Address
Corporate Author Thesis
Publisher Place of Publication London Editor
Language Wos 000259415800047 Publication Date 2008-06-06
Series Editor Series Title Abbreviated Series Title
Series Volume Series Issue Edition
ISSN (up) 0022-4596; ISBN Additional Links UA library record; WoS full record; WoS citing articles
Impact Factor 2.299 Times cited 6 Open Access
Notes Approved Most recent IF: 2.299; 2008 IF: 1.910
Call Number UA @ lucian @ c:irua:72948 Serial 2314
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Author Stranger, M.; Krata, A.; Kontozova-Deutsch, V.; Bencs, L.; Deutsch, F.; Worobiec, A.; Naveau, I.; Roekens, E.; Van Grieken, R.
Title Monitoring of NO2 in the ambient air with passive samplers before and after a road reconstruction event Type A1 Journal article
Year 2008 Publication Microchemical journal Abbreviated Journal
Volume 90 Issue 2 Pages 93-98
Keywords A1 Journal article; AXES (Antwerp X-ray Analysis, Electrochemistry and Speciation); Laboratory Experimental Medicine and Pediatrics (LEMP)
Abstract Nitrogen dioxide (NO2) concentrations were used to evaluate the air quality before and after the infrastructural change of an important traffic artery in Mortsel, Antwerp (Belgium). During the reconstruction works two pairs of traffic lanes were reduced to one in each direction. Two sampling campaigns were conducted: the first one before the works in 2003 and the second one in 2005, after the road works were finished. Sampling was performed on a weekly base with the use of passive diffusion tubes on the streets, and also indoors in nearby houses. The samples were analyzed by ion chromatography, from which data the NO2 concentrations in air could be calculated. These results were compared with NO2 values from the air monitoring station 42R801 of the Flemish Environment Agency in Borgerhout, Antwerp. On the base of different NO2 concentrations, correlated well with the traffic density, sampling locations were classified into three groups as follows: 1) heavily polluted (heavy traffic); 2) moderately polluted (medium traffic); or 3) less polluted (low traffic density). Sampling sites located further from the road works, enclosed to the group less polluted, showedthe lowestNO2 concentrations. The highestNO2 levelwas found for the locations close to reconstructionworks, which belonged to the group heavily polluted. The contribution of NO2 was at the samelevel before and after the roadworks. During the first campaign it ranged from30±7 µg/m3 to 71±11 µg/m3 and during the second sampling itwas between 36±17 µg/m3 and 73±17 µg/m3. These modernizationworks had no impact on preventing the traffic-related pollutant as NO2 and as a consequence no significant effect on the air quality in the studied region. It has been proven that the impact of traffic on the air quality is unmistakably high and simply reduction of the number of the traffic lanes, intended to discourage the traffic flow, had apparently no environmentally advantageous effect
Address
Corporate Author Thesis
Publisher Place of Publication Editor
Language Wos 000261084200002 Publication Date 2008-04-18
Series Editor Series Title Abbreviated Series Title
Series Volume Series Issue Edition
ISSN (up) 0026-265x; 0026-265x ISBN Additional Links UA library record; WoS full record; WoS citing articles
Impact Factor Times cited Open Access
Notes Approved no
Call Number UA @ admin @ c:irua:71076 Serial 8276
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Author Mihucz, V.G.; Varga, Z.; Tatár, E.; Virág, I.; Van Grieken, R.; Koleszár, Z.; Záray, G.
Title Redistribution of uranium and thorium by soil/plant interaction in a recultivated mining area Type A1 Journal article
Year 2008 Publication Microchemical journal Abbreviated Journal
Volume 90 Issue 1 Pages 44-49
Keywords A1 Journal article; AXES (Antwerp X-ray Analysis, Electrochemistry and Speciation)
Abstract During the recultivation of the uranium mining area of Kõvágószõlõs (Hungary), the tailings were covered with clay and loess soil layers having a thickness of 30 cm and 100 cm, respectively. In the loess covering layer, acacia (Robinia pseudoacacia), poplars (Populus × albus, Populus × canescens), oak (Quercus pubescens), silver tree (Eleagnus angustifolia) were planted between 1996 and 2004. In order to establish the extent of the uranium and thorium transport from the sludge to the leaves by uptake and translocation processes through roots with a length higher than 1.3 m results in a remarkable redistribution of these pollutants, a gray poplar tree, growing spontaneously in the last uncovered tailing, being selected as reference tree. The U and Th concentrations in the leaves of the above-mentioned trees, in the covering layers as well as in the original sludge were determined by inductively coupled plasma sector field mass spectrometry (ICP-SF-MS). Generally, the Th concentration of the soils was about 4 times higher than that of uranium, while uranium concentration was about 10130 times higher than that of thorium in the leaf samples and its concentration ranged from 28 to 1045 ng g− 1, the last value belonging to the poplar tree growing on the last uncovered tailing. In order to assume the mobility and bioavailability of uranium if the dry leaves fall down, the uranium species in the leaves of the poplar tree growing in the uncovered reservoir were determined applying ultrasound-assisted extraction with distilled water and ammonium acetate as well as high performance liquid chromatographic (HPLC)-ICP-SF-MS technique. About 20% of total uranium could be extracted in form of uranyl cations and a presumably negatively charged uranium compound. Estimations revealed that the annual increment of U in the soil surface layer due to the dead fallen leaves in case of the investigated gray poplar (Populus × canescens) is about 1.2%.
Address
Corporate Author Thesis
Publisher Place of Publication Editor
Language Wos 000258744000008 Publication Date 2008-03-21
Series Editor Series Title Abbreviated Series Title
Series Volume Series Issue Edition
ISSN (up) 0026-265x; 0026-265x ISBN Additional Links UA library record; WoS full record; WoS citing articles
Impact Factor Times cited Open Access
Notes Approved no
Call Number UA @ admin @ c:irua:70717 Serial 8464
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Author Worobiec, A.; Samek, L.; Karaszkiewicz, P.; Kontozova-Deutsch, V.; Stefaniak, E.A.; van Meel, K.; Krata, A.; Bencs, L.; Van Grieken, R.
Title A seasonal study of atmospheric conditions influenced by the intensive tourist flow in the Royal Museum of Wawel Castle in Cracow, Poland Type A1 Journal article
Year 2008 Publication Microchemical journal Abbreviated Journal
Volume 90 Issue 2 Pages 99-106
Keywords A1 Journal article; AXES (Antwerp X-ray Analysis, Electrochemistry and Speciation); Laboratory Experimental Medicine and Pediatrics (LEMP)
Abstract Increasingmass tourismcan generate importantmicroclimatic perturbations and also elevate indoor pollution by the transport of fine particulatematter. The purpose of this researchwas to study the indoor air conditions in the RoyalMuseum ofWawel Castle in Cracow, Poland, displaying amongst other valuable works of art also a unique collection of Flemish tapestries. The investigation involved in the determination of transport and deposition of particulate matter brought in by visitors. The microclimate inside the exhibition rooms was also monitored. Samples of suspended particulateswere collected inside and outside themuseuminwinterand summer2006.On days with intensive tourist visits the concentration of total suspended particulates was significantly higher (i.e., 130 µg/m3 inwinter and 49 µg/m3 in summer) than on those days without tourists (i.e., 73 µg/m3 and 22 µg/m3 in winter and summer, respectively). The concentrations of all investigated elementswere also considerably higher during the tourist flow. This was especially valid for soil dust associated elements (Si, K, Ca, Al, and Ti), with considerably higher levels in summer than winter. This could be linked with much more frequent tourist activity in the summer period. Also, the concentration of Clwasmuch higher inwinter than summer, due to the use of deicing salts on the roads and pavements.
Address
Corporate Author Thesis
Publisher Place of Publication Editor
Language Wos 000261084200003 Publication Date 2008-04-27
Series Editor Series Title Abbreviated Series Title
Series Volume Series Issue Edition
ISSN (up) 0026-265x; 0026-265x ISBN Additional Links UA library record; WoS full record; WoS citing articles
Impact Factor Times cited Open Access
Notes Approved no
Call Number UA @ admin @ c:irua:70988 Serial 8500
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Author Milton Pereira, J.; Vasilopoulos, P.; Peeters, F.M.
Title Resonant tunneling in graphene microstructures Type A1 Journal article
Year 2008 Publication Microelectronics journal Abbreviated Journal Microelectron J
Volume 39 Issue 3-4 Pages 534-536
Keywords A1 Journal article; Condensed Matter Theory (CMT)
Abstract
Address
Corporate Author Thesis
Publisher Place of Publication Luton Editor
Language Wos 000255600600055 Publication Date 2007-08-30
Series Editor Series Title Abbreviated Series Title
Series Volume Series Issue Edition
ISSN (up) 0026-2692; ISBN Additional Links UA library record; WoS full record; WoS citing articles
Impact Factor 1.163 Times cited 9 Open Access
Notes Approved Most recent IF: 1.163; 2008 IF: 0.859
Call Number UA @ lucian @ c:irua:68850 Serial 2892
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Author Mlinar, V.; Peeters, F.M.
Title Tuning of the optical properties of (11k) grown InAs quantum dots by the capping layer Type A1 Journal article
Year 2008 Publication Microelectronics journal Abbreviated Journal Microelectron J
Volume 39 Issue 3-4 Pages 359-361
Keywords A1 Journal article; Condensed Matter Theory (CMT)
Abstract
Address
Corporate Author Thesis
Publisher Place of Publication Luton Editor
Language Wos 000255600600013 Publication Date 2007-09-05
Series Editor Series Title Abbreviated Series Title
Series Volume Series Issue Edition
ISSN (up) 0026-2692; ISBN Additional Links UA library record; WoS full record
Impact Factor 1.163 Times cited Open Access
Notes Approved Most recent IF: 1.163; 2008 IF: 0.859
Call Number UA @ lucian @ c:irua:68849 Serial 3753
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Author Kontozova-Deutsch, V.; Deutsch, F.; Godoi, R.H.M.; Spolnik, Z.; Wei, W.; Van Grieken, R.
Title Application of EPMA and XRF for the investigation of particulate pollutants in the field of cultural heritage Type A1 Journal article
Year 2008 Publication Microchimica acta Abbreviated Journal
Volume 161 Issue 3/4 Pages 465-469
Keywords A1 Journal article; AXES (Antwerp X-ray Analysis, Electrochemistry and Speciation)
Abstract
Address
Corporate Author Thesis
Publisher Place of Publication Editor
Language Wos 000256175600029 Publication Date 2008-01-30
Series Editor Series Title Abbreviated Series Title
Series Volume Series Issue Edition
ISSN (up) 0026-3672; 1436-5073 ISBN Additional Links UA library record; WoS full record; WoS citing articles
Impact Factor Times cited Open Access
Notes Approved no
Call Number UA @ admin @ c:irua:68798 Serial 7474
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Author Kontozova-Deutsch, V.; Godoi, R.H.M.; Worobiec, A.; Spolnik, Z.; Krata, A.; Deutsch, F.; Van Grieken, R.
Title Investigation of gaseous and particulate air pollutants at the Basilica Saint-Urbain in Troyes, related to the preservation of the medieval stained glass windows Type A1 Journal article
Year 2008 Publication Microchimica acta Abbreviated Journal
Volume 162 Issue 3/4 Pages 425-432
Keywords A1 Journal article; AXES (Antwerp X-ray Analysis, Electrochemistry and Speciation); Laboratory Experimental Medicine and Pediatrics (LEMP)
Abstract
Address
Corporate Author Thesis
Publisher Place of Publication Editor
Language Wos 000258194900015 Publication Date 2008-02-22
Series Editor Series Title Abbreviated Series Title
Series Volume Series Issue Edition
ISSN (up) 0026-3672; 1436-5073 ISBN Additional Links UA library record; WoS full record; WoS citing articles
Impact Factor Times cited Open Access
Notes Approved no
Call Number UA @ admin @ c:irua:70072 Serial 8122
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Author Verbeeck, J.; Bertoni, G.
Title Model-based quantification of EELS: is standardless quantification possible? Type A1 Journal article
Year 2008 Publication Microchimica acta Abbreviated Journal Microchim Acta
Volume 161 Issue 3/4 Pages 439-443
Keywords A1 Journal article; Electron microscopy for materials research (EMAT)
Abstract Electron energy loss spectroscopy (EELS) is an ideal tool to obtain chemical information from nanoscale volumes. Quantification of the experimental spectra however has prevented for a long time access to the available information in a reliable and reproducible way. We present recent advances in model-based quantification of EELS spectra and show that we obtain the best possible precision for a given dataset, as well as remarkably good accuracies when applied to three different materials. The results are shown to be far superior over conventional quantification techniques and could hold a promise for standardless quantification of EELS spectra.
Address
Corporate Author Thesis
Publisher Place of Publication Editor
Language Wos 000256175600024 Publication Date 2008-02-22
Series Editor Series Title Abbreviated Series Title
Series Volume Series Issue Edition
ISSN (up) 0026-3672;1436-5073; ISBN Additional Links UA library record; WoS full record; WoS citing articles
Impact Factor 4.58 Times cited 5 Open Access
Notes Esteem 026019; Fwo; G.0425.05; Iap V; Goa 2005 Approved Most recent IF: 4.58; 2008 IF: 1.910
Call Number UA @ lucian @ c:irua:69292UA @ admin @ c:irua:69292 Serial 2100
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