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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 (up) 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 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
Permanent link to this record
 
 
Author Payette, C.; Austing, D.G.; Yu, G.; Gupta, J.A.; Nair, S.V.; Partoens, B.; Amaha, S.; Tarucha, S.
Title Two-level anti-crossings high up in the single-particle energy spectrum of a quantum dot Type A1 Journal article
Year 2008 Publication Physica. E: Low-dimensional systems and nanostructures Abbreviated Journal Physica E
Volume 40 Issue (up) 6 Pages 1807-1810
Keywords A1 Journal article; Condensed Matter Theory (CMT)
Abstract
Address
Corporate Author Thesis
Publisher Place of Publication Editor
Language Wos 000255717400010 Publication Date 2007-09-22
Series Editor Series Title Abbreviated Series Title
Series Volume Series Issue Edition
ISSN 1386-9477; ISBN Additional Links UA library record; WoS full record; WoS citing articles
Impact Factor 2.221 Times cited 8 Open Access
Notes Approved Most recent IF: 2.221; 2008 IF: 1.230
Call Number UA @ lucian @ c:irua:69132 Serial 3783
Permanent link to this record
 
 
Author Stranger, M.; Potgieter-Vermaak, S.S.; Van Grieken, R.
Title Characterization of indoor air quality in primary schools in Antwerp, Belgium Type A1 Journal article
Year 2008 Publication Indoor air: international journal of indoor quality and climate Abbreviated Journal
Volume 18 Issue (up) 6 Pages 454-463
Keywords A1 Journal article; AXES (Antwerp X-ray Analysis, Electrochemistry and Speciation)
Abstract The indoor air quality of 27 primary schools located in the city centre and suburbs of Antwerp, Belgium, was assessed. The primary aim was to obtain correlations between the various pollutant levels. Indoor:outdoor ratios and the building and classroom characteristics of each school were investigated. This paper presents results on indoor and local outdoor PM2.5 mass concentrations, its elemental composition in terms of K, Ca, Ti, V, Cr, Mn, Fe, Ni, Cu, Zn, Br, Pb, Al, Si, S, and Cl, and its black smoke content. In addition, indoor and local outdoor levels of the gases NO2, SO2, O3, and BTEX (benzene, toluene, ethyl benzene, and xylene isomers) were determined. Black smoke, NO2, SO2 and O3, occurred at indoor:outdoor ratios below unity, indicating their significant outdoor sources. No linear correlation was established between indoor and outdoor levels for PM2.5 mass concentrations and BTEX; their indoor:outdoor ratios exceeded unity except for benzene. Classroom PM2.5 occurred with a different elemental composition than local outdoor PM2.5. The re-suspension of dust because of room occupation is probably the main contributor for the I/O ratios higher than 1 reported for elements typically constituting dust particles. Finally, increased benzene concentrations were reported for classrooms located at the lower levels.
Address
Corporate Author Thesis
Publisher Place of Publication Editor
Language Wos 000261063100004 Publication Date 2008-09-24
Series Editor Series Title Abbreviated Series Title
Series Volume Series Issue Edition
ISSN 0905-6947 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:72490 Serial 7629
Permanent link to this record
 
 
Author Van Grieken, R.
Title Editorial: Award for best XRS referee during 2007-2008 Type A1 Journal article
Year 2008 Publication X-ray spectrometry Abbreviated Journal
Volume 37 Issue (up) 6 Pages 571-571
Keywords A1 Journal article; AXES (Antwerp X-ray Analysis, Electrochemistry and Speciation)
Abstract
Address
Corporate Author Thesis
Publisher Place of Publication Editor
Language Wos 000261116500014 Publication Date 2008-10-20
Series Editor Series Title Abbreviated Series Title
Series Volume Series Issue Edition
ISSN 0049-8246 ISBN Additional Links UA library record; WoS full record
Impact Factor Times cited Open Access
Notes Approved no
Call Number UA @ admin @ c:irua:71121 Serial 7831
Permanent link to this record
 
 
Author Bogaerts, A.; Chen, Z.; Autrique, D.
Title Double pulse laser ablation and laser induced breakdown spectroscopy: a modeling investigation Type A1 Journal article
Year 2008 Publication Spectrochimica acta: part B : atomic spectroscopy Abbreviated Journal Spectrochim Acta B
Volume 63 Issue (up) 7 Pages 746-754
Keywords A1 Journal article; Plasma Lab for Applications in Sustainability and Medicine – Antwerp (PLASMANT)
Abstract
Address
Corporate Author Thesis
Publisher Place of Publication Oxford Editor
Language Wos 000258175000003 Publication Date 2008-04-21
Series Editor Series Title Abbreviated Series Title
Series Volume Series Issue Edition
ISSN 0584-8547; ISBN Additional Links UA library record; WoS full record; WoS citing articles
Impact Factor 3.241 Times cited 56 Open Access
Notes Approved Most recent IF: 3.241; 2008 IF: 2.853
Call Number UA @ lucian @ c:irua:69248 Serial 756
Permanent link to this record
 
 
Author Vranjes, J.; Petrovic, D.; Pandey, B.P.; Poedts, S.
Title Electrostatic modes in multi-ion and pair-ion collisional plasmas Type A1 Journal article
Year 2008 Publication Physics of plasmas Abbreviated Journal Phys Plasmas
Volume 15 Issue (up) 7 Pages 072104
Keywords A1 Journal article; Plasma Lab for Applications in Sustainability and Medicine – Antwerp (PLASMANT)
Abstract The physics of plasmas containing positive and negative ions is discussed with special attention to the recently produced pair-ion plasma containing ions of equal mass and opposite charge. The effects of the density gradient in the direction perpendicular to the ambient magnetic field vector are discussed. The possible presence of electrons is discussed in the context of plasma modes propagating at an angle with respect to the magnetic field vector. It is shown that the electron plasma mode may become a backward mode in the presence of a density gradient, and this behavior may be controlled either by the electron number density or the mode number in the perpendicular direction. In plasmas with hot electrons an instability may develop, driven by the combination of electron collisions and the density gradient, and in the regime of a sound ions' response. In the case of a pure pair-ion plasma, for lower frequencies and for parameters close to those used in the recent experiments, the perturbed ions may feel the effects of the magnetic field. In this case the plasma mode also becomes backward, resembling features of an experimentally observed but yet unexplained backward mode. (C) 2008 American Institute of Physics.
Address
Corporate Author Thesis
Publisher Place of Publication Woodbury, N.Y. Editor
Language Wos 000258175800004 Publication Date 2008-07-31
Series Editor Series Title Abbreviated Series Title
Series Volume Series Issue Edition
ISSN 1070-664X; ISBN Additional Links UA library record; WoS full record; WoS citing articles
Impact Factor 2.115 Times cited 54 Open Access
Notes Approved Most recent IF: 2.115; 2008 IF: 2.427
Call Number UA @ lucian @ c:irua:103554 Serial 1023
Permanent link to this record
 
 
Author Slachmuylders, A.F.; Partoens, B.; Magnus, W.; Peeters, F.M.
Title Excitons and trions in cylindrical nanowires with dielectric mismatch Type A1 Journal article
Year 2008 Publication Physica status solidi: C: conferences and critical reviews Abbreviated Journal
Volume 5 Issue (up) 7 Pages 2416-2419
Keywords A1 Journal article; Condensed Matter Theory (CMT)
Abstract
Address
Corporate Author Thesis
Publisher Place of Publication Berlin Editor
Language Wos 000257507200009 Publication Date 2008-02-20
Series Editor Series Title Abbreviated Series Title
Series Volume Series Issue Edition
ISSN 1862-6351; ISBN Additional Links UA library record; WoS full record; WoS citing articles
Impact Factor Times cited 3 Open Access
Notes Approved Most recent IF: NA
Call Number UA @ lucian @ c:irua:69641 Serial 1127
Permanent link to this record
 
 
Author de Backer, J.W.; Vos, W.G.; Gorlé, C.D.; Germonpré, P.; Partoens, B.; Wuyts, F.L.; Parizel, P.M.; de Backer, W.
Title Flow analyses in the lower airways: patient-specific model and boundary conditions Type A1 Journal article
Year 2008 Publication Medical engineering and physics Abbreviated Journal Med Eng Phys
Volume 30 Issue (up) 7 Pages 872-879
Keywords A1 Journal article; Condensed Matter Theory (CMT); Antwerp Surgical Training, Anatomy and Research Centre (ASTARC); Laboratory Experimental Medicine and Pediatrics (LEMP)
Abstract Computational fluid dynamics (CFD) is increasingly applied in the respiratory domain. The ability to simulate the flow through a bifurcating tubular system has increased the insight into the internal flow dynamics and the particular characteristics of respiratory flows such as secondary motions and inertial effects. The next step in the evolution is to apply the technique to patient-specific cases, in order to provide more information about pathological airways. This study presents a patient-specific approach where both the geometry and the boundary conditions (BC) are based on individual imaging methods using computed tomography (CT). The internal flow distribution of a 73-year-old female suffering from chronic obstructive pulmonary disease (COPD) is assessed. The validation is performed through the comparison of lung ventilation with gamma scintigraphy. The results show that in order to obtain agreement within the accuracy limits of the gamma scintigraphy scan, both the patient-specific geometry and the BC (driving pressure) play a crucial role. A minimal invasive test (CT scan) supplied enough information to perform an accurate CFD analysis. In the end it was possible to capture the pathological features of the respiratory system using the imaging and computational fluid dynamics techniques. This brings the introduction of this new technique in the clinical practice one step closer.
Address
Corporate Author Thesis
Publisher Place of Publication London Editor
Language Wos 000259768300009 Publication Date 2007-12-26
Series Editor Series Title Abbreviated Series Title
Series Volume Series Issue Edition
ISSN 1350-4533; ISBN Additional Links UA library record; WoS full record; WoS citing articles
Impact Factor 1.819 Times cited 82 Open Access
Notes Approved Most recent IF: 1.819; 2008 IF: 2.216
Call Number UA @ lucian @ c:irua:71693 Serial 1224
Permanent link to this record
 
 
Author Zaikina, J.V.; Kovnir, K.A.; Sobolev, A.N.; Presniakov, I.A.; Kytin, V.G.; Kulbachinskii, V.A.; Olenev, A.V.; Lebedev, O.I.; Van Tendeloo, G.; Dikarev, E.V.; Shevelkov, A.V.
Title Highly disordered crystal structure and thermoelectric properties of Sn3P4 Type A1 Journal article
Year 2008 Publication Chemistry of materials Abbreviated Journal Chem Mater
Volume 20 Issue (up) 7 Pages 2476-2483
Keywords A1 Journal article; Electron microscopy for materials research (EMAT)
Abstract
Address
Corporate Author Thesis
Publisher Place of Publication Washington, D.C. Editor
Language Wos 000254605000011 Publication Date 2008-03-07
Series Editor Series Title Abbreviated Series Title
Series Volume Series Issue Edition
ISSN 0897-4756;1520-5002; ISBN Additional Links UA library record; WoS full record; WoS citing articles
Impact Factor 9.466 Times cited 33 Open Access
Notes Fwo Approved Most recent IF: 9.466; 2008 IF: 5.046
Call Number UA @ lucian @ c:irua:69999 Serial 1470
Permanent link to this record
 
 
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 (up) 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 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 Horemans, B.; Worobiec, A.; Buczyńska, A.; van Meel, K.; Van Grieken, R.
Title Airborne particulate matter and BTEX in office environments Type A1 Journal article
Year 2008 Publication Journal of environmental monitoring Abbreviated Journal
Volume 10 Issue (up) 7 Pages 867-876
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 000257425300010 Publication Date 2008-06-11
Series Editor Series Title Abbreviated Series Title
Series Volume Series Issue Edition
ISSN 1464-0325; 1464-0333 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:69425 Serial 7434
Permanent link to this record
 
 
Author van Meel, K.; Fontàs, C.; Van Grieken, R.; Queralt, I.; Hidalgo, M.; Marguí, E.
Title Application of high-energy polarised beam energy dispersive X-ray fluorescence spectrometry to cadmium determination in saline solutions Type A1 Journal article
Year 2008 Publication Journal of analytical atomic spectrometry Abbreviated Journal
Volume 23 Issue (up) 7 Pages 1034-1037
Keywords A1 Journal article; AXES (Antwerp X-ray Analysis, Electrochemistry and Speciation)
Abstract
Address
Corporate Author Thesis
Publisher Place of Publication Editor
Language Wos 000257146000017 Publication Date 2008-04-22
Series Editor Series Title Abbreviated Series Title
Series Volume Series Issue Edition
ISSN 0267-9477 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:69424 Serial 7476
Permanent link to this record
 
 
Author Marguí, E.; Fontàs, C.; van Meel, K.; Van Grieken, R.; Queralt, I.; Hidalgo, M.
Title High-energy polarized-beam energy-dispersive X-ray fluorescence analysis combined with activated thin layers for cadmium determination at trace levels in complex environmental liquid samples Type A1 Journal article
Year 2008 Publication Analytical chemistry Abbreviated Journal
Volume 80 Issue (up) 7 Pages 2357-2364
Keywords A1 Journal article; AXES (Antwerp X-ray Analysis, Electrochemistry and Speciation)
Abstract
Address
Corporate Author Thesis
Publisher Place of Publication Editor
Language Wos 000254593500015 Publication Date 2008-03-08
Series Editor Series Title Abbreviated Series Title
Series Volume Series Issue Edition
ISSN 0003-2700; 5206-882x 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:68425 Serial 8032
Permanent link to this record
 
 
Author Bending, S.; Neal, J.S.; Milošević, M.V.; Potenza, A.; Emeterio, L.S.; Marrows, C.H.
Title Competing symmetries in superconducting vortex-antivortex “molecular crystals” Type A1 Journal article
Year 2008 Publication Physica: C : superconductivity Abbreviated Journal Physica C
Volume 468 Issue (up) 7-10 Pages 518-522
Keywords A1 Journal article; Condensed Matter Theory (CMT)
Abstract
Address
Corporate Author Thesis
Publisher Place of Publication Amsterdam Editor
Language Wos 000257355300006 Publication Date 2008-03-13
Series Editor Series Title Abbreviated Series Title
Series Volume Series Issue Edition
ISSN 0921-4534; ISBN Additional Links UA library record; WoS full record; WoS citing articles
Impact Factor 1.404 Times cited 2 Open Access
Notes Approved Most recent IF: 1.404; 2008 IF: 0.740
Call Number UA @ lucian @ c:irua:70069 Serial 436
Permanent link to this record
 
 
Author Doria, M.M.; Romaguera, A.R. de C.; Milošević, M.V.; Peeters, F.M.
Title Triplet vortex state in magnetic superconductors: effects of boundaries Type A1 Journal article
Year 2008 Publication Physica: C : superconductivity Abbreviated Journal Physica C
Volume 468 Issue (up) 7-10 Pages 572-575
Keywords A1 Journal article; Condensed Matter Theory (CMT)
Abstract
Address
Corporate Author Thesis
Publisher Place of Publication Amsterdam Editor
Language Wos 000257355300016 Publication Date 2008-03-11
Series Editor Series Title Abbreviated Series Title
Series Volume Series Issue Edition
ISSN 0921-4534; ISBN Additional Links UA library record; WoS full record; WoS citing articles
Impact Factor 1.404 Times cited 1 Open Access
Notes Approved Most recent IF: 1.404; 2008 IF: 0.740
Call Number UA @ lucian @ c:irua:69622 Serial 3736
Permanent link to this record
 
 
Author Shanenko, A.A.; Croitoru, M.D.; Peeters, F.M.
Title Nanoscale superconductivity: nanowires and nanofilms Type A1 Journal article
Year 2008 Publication Physica: C : superconductivity Abbreviated Journal Physica C
Volume 468 Issue (up) 7/10 Pages 593-598
Keywords A1 Journal article; Condensed Matter Theory (CMT); Electron microscopy for materials research (EMAT)
Abstract
Address
Corporate Author Thesis
Publisher Place of Publication Amsterdam Editor
Language Wos 000257355300021 Publication Date 2008-03-03
Series Editor Series Title Abbreviated Series Title
Series Volume Series Issue Edition
ISSN 0921-4534; ISBN Additional Links UA library record; WoS full record; WoS citing articles
Impact Factor 1.404 Times cited 6 Open Access
Notes Approved Most recent IF: 1.404; 2008 IF: 0.740
Call Number UA @ lucian @ c:irua:69623 Serial 2273
Permanent link to this record
 
 
Author Berdiyorov, G.R.; Milošević, M.V.; Peeters, F.M.
Title Non commensurate vortex lattices in a composite antidot lattice or dc current Type A1 Journal article
Year 2008 Publication Physica: C : superconductivity Abbreviated Journal Physica C
Volume 468 Issue (up) 7/10 Pages 809-812
Keywords A1 Journal article; Condensed Matter Theory (CMT)
Abstract
Address
Corporate Author Thesis
Publisher Place of Publication Editor
Language Wos 000257355300070 Publication Date 2008-03-03
Series Editor Series Title Abbreviated Series Title
Series Volume Series Issue Edition
ISSN 0921-4534; ISBN Additional Links UA library record; WoS full record; WoS citing articles
Impact Factor 1.404 Times cited 2 Open Access
Notes Approved Most recent IF: 1.404; 2008 IF: 0.740
Call Number UA @ lucian @ c:irua:70075 Serial 2343
Permanent link to this record
 
 
Author Misko, V.R.; Xu, B.; Peeters, F.M.
Title Size-dependence of vortex shells in mesoscopic superconducting disks Type A1 Journal article
Year 2008 Publication Physica: C : superconductivity Abbreviated Journal Physica C
Volume 468 Issue (up) 7/10 Pages 726-729
Keywords A1 Journal article; Condensed Matter Theory (CMT)
Abstract
Address
Corporate Author Thesis
Publisher Place of Publication Amsterdam Editor
Language Wos 000257355300049 Publication Date 2008-03-03
Series Editor Series Title Abbreviated Series Title
Series Volume Series Issue Edition
ISSN 0921-4534; ISBN Additional Links UA library record; WoS full record; WoS citing articles
Impact Factor 1.404 Times cited 9 Open Access
Notes Approved Most recent IF: 1.404; 2008 IF: 0.740
Call Number UA @ lucian @ c:irua:69624 Serial 3033
Permanent link to this record
 
 
Author Eckert, M.; Neyts, E.; Bogaerts, A.
Title Molecular dynamics simulations of the sticking and etch behavior of various growth species of (ultra)nanocrystalline diamond films Type A1 Journal article
Year 2008 Publication Chemical vapor deposition Abbreviated Journal Chem Vapor Depos
Volume 14 Issue (up) 7/8 Pages 213-223
Keywords A1 Journal article; Plasma Lab for Applications in Sustainability and Medicine – Antwerp (PLASMANT)
Abstract The reaction behavior of species that may affect the growth of ultrananocrystal line and nanocrystalline diamond ((U)NCD) films is investigated by means of molecular dynamics simulations. Impacts of CHx (x = 0 – 4), C2Hx (x=0-6), C3Hx (x=0-2), C4Hx (x = 0 – 2), H, and H-2 on clean and hydrogenated diamond (100)2 x 1 and (111) 1 x 1 surfaces at two different substrate temperatures are simulated. We find that the different bonding structures of the two surfaces cause different temperature effects on the sticking efficiency. These results predict a temperature-dependent ratio of diamond (100) and (111) growth. Furthermore, predictions of which are the most important hydrocarbon species for (U)NCD growth are made.
Address
Corporate Author Thesis
Publisher Place of Publication Weinheim Editor
Language Wos 000259302700008 Publication Date 2008-08-18
Series Editor Series Title Abbreviated Series Title
Series Volume Series Issue Edition
ISSN 0948-1907;1521-3862; ISBN Additional Links UA library record; WoS full record; WoS citing articles
Impact Factor 1.333 Times cited 25 Open Access
Notes Approved Most recent IF: 1.333; 2008 IF: 1.483
Call Number UA @ lucian @ c:irua:70001 Serial 2177
Permanent link to this record
 
 
Author Dominiczak, M.; Ruyter, A.; Limelette, P.; Monot-Laffez, I.; Giovannelli, F.; Rossell, M.D.; Van Tendeloo, G.
Title Relaxation phenomena at the metal-to-insulator transition in La0.8Sr0.2MnO3 single crystals Type A1 Journal article
Year 2008 Publication Solid state communications Abbreviated Journal Solid State Commun
Volume 148 Issue (up) 7/8 Pages 340-344
Keywords A1 Journal article; Electron microscopy for materials research (EMAT)
Abstract The time dependence of the resistance RAC of a La0.8Sr0.2MnO3 single crystal has been investigated in the vicinity of the metal-to-insulator transition temperature. We used local probe microscopy to show the existence, at room temperature, of coexisting clusters of micrometer size. Our analysis shows that relaxation effects can be described with a simple exponential contribution using a random resistor-network, based on phase separation between insulating and metallic domains. Our results clearly prove the existence of a percolation threshold over which no percolation path exists. Moreover, these results highlight the significant role of the remanent magnetization.
Address
Corporate Author Thesis
Publisher Place of Publication New York, N.Y. Editor
Language Wos 000260907800020 Publication Date 2008-09-03
Series Editor Series Title Abbreviated Series Title
Series Volume Series Issue Edition
ISSN 0038-1098; ISBN Additional Links UA library record; WoS full record; WoS citing articles
Impact Factor 1.554 Times cited 9 Open Access
Notes Approved Most recent IF: 1.554; 2008 IF: 1.557
Call Number UA @ lucian @ c:irua:75637 Serial 2863
Permanent link to this record
 
 
Author Bertoni, G.; Verbeeck, J.
Title Accuracy and precision in model based EELS quantification Type A1 Journal article
Year 2008 Publication Ultramicroscopy Abbreviated Journal Ultramicroscopy
Volume 108 Issue (up) 8 Pages 782-790
Keywords A1 Journal article; Electron microscopy for materials research (EMAT)
Abstract We present results on model based quantification of electron energy loss spectra (EELS), focusing on the factors that influence accuracy and precision in determining chemical concentrations. Several sources of systematical errors are investigated. The spectrometer entrance aperture determines the collection angle, and the effects of its position with respect to the transmitted beam are investigated, taking into account the diffraction by the crystal structure. The effect of the orientation of the sample is tested experimentally and theoretically on SrTiO3, and finally, a simulated experiment on c-BN at different thicknesses confirms the superior results of the model based method with respect to the conventional method. A test on a set of experimental reference compounds is presented, showing that remarkably good accuracy can be obtained. Recommendations are given to achieve high accuracy and precision in practice. (C) 2008 Elsevier B.V. All rights reserved.
Address
Corporate Author Thesis
Publisher Place of Publication Amsterdam Editor
Language Wos 000258241900010 Publication Date 2008-02-22
Series Editor Series Title Abbreviated Series Title
Series Volume Series Issue Edition
ISSN 0304-3991; ISBN Additional Links UA library record; WoS full record; WoS citing articles
Impact Factor 2.843 Times cited 44 Open Access
Notes Approved Most recent IF: 2.843; 2008 IF: 2.629
Call Number UA @ lucian @ c:irua:70550UA @ admin @ c:irua:70550 Serial 42
Permanent link to this record
 
 
Author Slachmuylders, A.F.; Partoens, B.; Peeters, F.M.; Magnus, W.
Title Effect of a metallic gate on the energy levels of a shallow donor Type A1 Journal article
Year 2008 Publication Applied physics letters Abbreviated Journal Appl Phys Lett
Volume 92 Issue (up) 8 Pages 083104,1-3
Keywords A1 Journal article; Condensed Matter Theory (CMT)
Abstract
Address
Corporate Author Thesis
Publisher American Institute of Physics Place of Publication New York, N.Y. Editor
Language Wos 000254297300074 Publication Date 2008-02-27
Series Editor Series Title Abbreviated Series Title
Series Volume Series Issue Edition
ISSN 0003-6951; ISBN Additional Links UA library record; WoS full record; WoS citing articles
Impact Factor 3.411 Times cited 14 Open Access
Notes Approved Most recent IF: 3.411; 2008 IF: 3.726
Call Number UA @ lucian @ c:irua:69618 Serial 792
Permanent link to this record
 
 
Author Földi, P.; Kálmán, O.; Benedict, M.G.; Peeters, F.M.
Title Networks of quantum nanorings : programmable spintronic devices Type A1 Journal article
Year 2008 Publication Nano letters Abbreviated Journal Nano Lett
Volume 8 Issue (up) 8 Pages 2556-2558
Keywords A1 Journal article; Engineering sciences. Technology; Condensed Matter Theory (CMT)
Abstract An array of quantum rings with local (ring by ring) modulation of the spin orbit interaction (SOI) can lead to novel effects in spin state transformation of electrons. It is shown that already small (3 x 3, 5 x 5) networks are remarkably versatile from this point of view: Working in a given network geometry, the input current can be directed to any of the output ports, simply by changing the SOI strengths by external gate voltages. Additionally, the same network with different SOI strengths can be completely analogous to the Stern-Gerlach device, exhibiting spatial-spin entanglement.
Address
Corporate Author Thesis
Publisher Place of Publication Washington Editor
Language Wos 000258440700077 Publication Date 2008-07-22
Series Editor Series Title Abbreviated Series Title
Series Volume Series Issue Edition
ISSN 1530-6984;1530-6992; ISBN Additional Links UA library record; WoS full record; WoS citing articles
Impact Factor 12.712 Times cited 76 Open Access
Notes Approved Most recent IF: 12.712; 2008 IF: 10.371
Call Number UA @ lucian @ c:irua:102609 Serial 2294
Permanent link to this record
 
 
Author Michel, K.H.; Verberck, B.
Title Theory of the evolution of phonon spectra and elastic constants from graphene to graphite Type A1 Journal article
Year 2008 Publication Physical review : B : solid state Abbreviated Journal Phys Rev B
Volume 78 Issue (up) 8 Pages 085424,1-085424,17
Keywords A1 Journal article; Condensed Matter Theory (CMT)
Abstract We present a unified theory of the phonon dispersions and elastic properties of graphene, graphite, and graphene multilayer systems. Starting from a fifth-nearest-neighbor force-constant model derived from full in-plane phonon dispersions of graphite [Mohr et al., Phys. Rev. B 76, 035439 (2007)], we use Born's long-wave method to calculate the tension and bending coefficients of graphene. Extending the model by interplanar interactions, we study the phonon dispersions and the elastic constants of graphite, and the phonon spectra of graphene multilayers. We find that the inner displacement terms due to sublattice shifts between inequivalent C atoms are quantitatively important in determining the elastomechanical properties of graphene and of graphite. The overall agreement between theory and experiment is very satisfactory. We investigate the evolution from graphene to graphite by studying the increase in the rigid plane optical mode as a function of the number of layers N. At N=10 the graphite value B2g1127 cm−1 is attained within a few percent.
Address
Corporate Author Thesis
Publisher Place of Publication Lancaster, Pa Editor
Language Wos 000259406900106 Publication Date 2008-08-21
Series Editor Series Title Abbreviated Series Title
Series Volume Series Issue Edition
ISSN 1098-0121;1550-235X; ISBN Additional Links UA library record; WoS full record; WoS citing articles
Impact Factor 3.836 Times cited 72 Open Access
Notes Approved Most recent IF: 3.836; 2008 IF: 3.322
Call Number UA @ lucian @ c:irua:76527 Serial 3622
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Author Malesevic, A.; Kemps, R.; Zhang, L.; Erni, R.; Van Tendeloo, G.; Vanhulsel, A.; van Haesendonck, C.
Title A versatile plasma tool for the synthesis of carbon nanotubes and few-layer graphene sheets Type A1 Journal article
Year 2008 Publication Journal of optoelectronics and advanced materials Abbreviated Journal J Optoelectron Adv M
Volume 10 Issue (up) 8 Pages 2052-2055
Keywords A1 Journal article; Electron microscopy for materials research (EMAT)
Abstract
Address
Corporate Author Thesis
Publisher Place of Publication Bucharest Editor
Language Wos Publication Date 0000-00-00
Series Editor Series Title Abbreviated Series Title
Series Volume Series Issue Edition
ISSN 1454-4164 ISBN Additional Links UA library record; WoS full record; WoS citing articles
Impact Factor 0.449 Times cited Open Access
Notes Approved Most recent IF: 0.449; 2008 IF: 0.577
Call Number UA @ lucian @ c:irua:70636 Serial 3839
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Author Aibéo, C.L.; Goffin, S.; Schalm, O.; van der Snickt, G.; Laquière, N.; Eyskens, P.; Janssens, K.
Title Micro-Raman analysis for the identification of pigments from 19th and 20th century paintings Type A1 Journal article
Year 2008 Publication Journal of Raman spectroscopy Abbreviated Journal J Raman Spectrosc
Volume 39 Issue (up) 8 Pages 1091-1098
Keywords A1 Journal article; AXES (Antwerp X-ray Analysis, Electrochemistry and Speciation)
Abstract In this article, results using confocal µ-Raman to analyse the cross-section of paint samples are presented. Results obtained with light microscopy, scanning electron microscopy (SEM) combined with an energy dispersive X-ray analysis (EDX) and micro-X-ray fluorescence (µ-XRF) are mentioned and compared to the ones obtained with confocal (MRS). In some cases, pigment identification was possible only by combining analytical results from different techniques. The samples were drawn from five paintings belonging to the Academy of Fine Arts of Antwerp, which are part of a collection of 34 paintings made by students from the Academy between 1819 and 1920. Since, on the one hand, the painting techniques and materials, especially pigments, used in this period are still not completely known, and on the other hand, this collection constitutes a very important and reliable resource of information, these paintings were chosen for a systematic investigation. They represent the evolution of painting in Belgium over approximately a century.
Address
Corporate Author Thesis
Publisher Place of Publication Editor
Language Wos 000259242100020 Publication Date 2008-05-16
Series Editor Series Title Abbreviated Series Title
Series Volume Series Issue Edition
ISSN 0377-0486 ISBN Additional Links UA library record; WoS full record; WoS citing articles
Impact Factor 2.969 Times cited 28 Open Access
Notes Approved Most recent IF: 2.969; 2008 IF: 3.526
Call Number UA @ admin @ c:irua:74467 Serial 5716
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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 (up) 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.
Address
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 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 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 (up) 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 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 Verbeeck, J.; Hébert; Rubino, S.; Novák, P.; Rusz, J.; Houdellier, F.; Gatel, C.; Schattschneider, P.
Title Optimal aperture sizes and positions for EMCD experiments Type A1 Journal article
Year 2008 Publication Ultramicroscopy Abbreviated Journal Ultramicroscopy
Volume 108 Issue (up) 9 Pages 865-872
Keywords A1 Journal article; Electron microscopy for materials research (EMAT)
Abstract The signal-to-noise ratio (SNR) in energy-loss magnetic chiral dichroism (EMCD)the equivalent of X-ray magnetic circular dichroism (XMCD) in the electron microscopeis optimized with respect to the detector shape, size and position. We show that an important increase in SNR over previous experiments can be obtained when taking much larger detector sizes. We determine the ideal shape of the detector but also show that round apertures are a good compromise if placed in their optimal position. We develop the theory for a simple analytical description of the EMCD experiment and then apply it to dynamical multibeam Bloch wave calculations and to an experimental data set. In all cases it is shown that a significant and welcome improvement of the SNR is possible.
Address
Corporate Author Thesis
Publisher Place of Publication Amsterdam Editor
Language Wos 000258747600009 Publication Date 2008-03-07
Series Editor Series Title Abbreviated Series Title
Series Volume Series Issue Edition
ISSN 0304-3991; ISBN Additional Links UA library record; WoS full record; WoS citing articles
Impact Factor 2.843 Times cited 27 Open Access
Notes This work was supported by the European Commission under contract no. 508971 CHIRALTEM. J.V. and F.H. thank the financial support from the European Union under the Framework 6 program under a contract for an Integrated Infrastructure Initiative. Reference 026019 ESTEEM. Thanks to J.P. Morniroli for making the Fe sample available. Approved Most recent IF: 2.843; 2008 IF: 2.629
Call Number UA @ lucian @ c:irua:76492UA @ admin @ c:irua:76492 Serial 2480
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Author Ghica, C.; Nistor, L.; Van Tendeloo, G.
Title Revealing nanoscale structural TEM/HRTEM: application on ferroelectric ordering by PMN-PT relaxor ferroelectric Type A1 Journal article
Year 2008 Publication Journal of optoelectronics and advanced materials Abbreviated Journal J Optoelectron Adv M
Volume 10 Issue (up) 9 Pages 2328-2333
Keywords A1 Journal article; Electron microscopy for materials research (EMAT)
Abstract Nano-scale ordering may be revealed in transmission electron microscopy (TEM) by at least three techniques that will be presented in this work: selected area electron diffraction, conventional TEM and high-resolution TEM. Digital image processing is used to extract additional information from the high-resolution micrographs. The described methods are illustrated in a microstructural and compositional study of a 90%Pb(Mg1/3Nb2/3)O-3-10%PbTiO2 ceramic sample. High-resolution images reveal the presence of ordered compositional nano-domains, observable in two specific crystallographic orientations. Antiphase boundaries lying in the (111) planes separate them, while (100) and (111) facets separate the ordered domains from the disordered matrix.
Address
Corporate Author Thesis
Publisher Place of Publication Bucharest Editor
Language Wos Publication Date 0000-00-00
Series Editor Series Title Abbreviated Series Title
Series Volume Series Issue Edition
ISSN 1454-4164 ISBN Additional Links UA library record; WoS full record;
Impact Factor 0.449 Times cited Open Access
Notes Approved Most recent IF: 0.449; 2008 IF: 0.577
Call Number UA @ lucian @ c:irua:76520 Serial 2901
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