|
Records |
|
Author |
Bogaerts, A. |
|
Title |
Computer simulations of argon-hydrogen Grimm-type glow discharges |
Type |
A1 Journal article |
|
Year |
2008 |
Publication |
Journal of analytical atomic spectrometry |
Abbreviated Journal |
J Anal Atom Spectrom |
|
Volume |
23 |
Issue |
|
Pages |
1476-1486 |
|
Keywords |
A1 Journal article; Plasma Lab for Applications in Sustainability and Medicine – Antwerp (PLASMANT) |
|
Abstract |
Computer simulations have been performed to describe the effect of small admixtures of hydrogen to an argon glow discharge in the Grimm-type configuration. The two-dimensional density profiles of the various plasma species (i.e., electrons, Ar+, ArH+, H+, H2+ and H3+ ions, H atoms and H2 molecules, Ar metastable atoms and sputtered Cu atoms) are presented for 1% H2 added to the argon glow discharge, and the effect of different H2 additions (varying between 0.1 and 10%) on the species densities, the hydrogen dissociation degree, and the sputtering process, are investigated. Finally, the relative contributions of various production and loss processes for the different plasma species are calculated. |
|
Address |
|
|
Corporate Author |
|
Thesis |
|
|
Publisher |
|
Place of Publication ![sorted by Place of Publication field, ascending order (up)](img/sort_asc.gif) |
London |
Editor |
|
|
Language |
|
Wos |
000260309700002 |
Publication Date |
2008-10-23 |
|
Series Editor |
|
Series Title |
|
Abbreviated Series Title |
|
|
Series Volume |
|
Series Issue |
|
Edition |
|
|
ISSN |
0267-9477;1364-5544; |
ISBN |
|
Additional Links |
UA library record; WoS full record; WoS citing articles |
|
Impact Factor |
3.379 |
Times cited |
23 |
Open Access |
|
|
Notes |
|
Approved |
Most recent IF: 3.379; 2008 IF: 4.028 |
|
Call Number |
UA @ lucian @ c:irua:70950 |
Serial |
468 |
Permanent link to this record |
|
|
|
|
Author |
Titantah, J.T.; Lamoen, D. |
|
Title |
The effect of temperature on the structural, electronic and optical properties of sp3-rich amorphous carbon |
Type |
A1 Journal article |
|
Year |
2008 |
Publication |
Journal of physics : condensed matter |
Abbreviated Journal |
J Phys-Condens Mat |
|
Volume |
20 |
Issue |
3 |
Pages |
035216,1-6 |
|
Keywords |
A1 Journal article; Electron microscopy for materials research (EMAT) |
|
Abstract |
The effect of temperature on the structural, electronic and optical properties of dense tetrahedral amorphous carbon made of similar to 80% sp(3)-bonded atoms is investigated using a combination of the classical Monte Carlo technique and density functional theory. A structural transformation accompanied by a slight decrease of the sp(3) fraction is evidenced above a temperature of about 600 degrees C. A structural analysis in combination with energy-loss near-edge structure calculations shows that beyond this temperature, the sp(2)-bonded C sites arrange themselves so as to enhance the conjugation of the p electrons. The Tauc optical band gap deduced from the calculated dielectric function shows major changes beyond this temperature in accordance with experimental results. Energy-loss near-edge structure and band gap calculations additionally reveal a massive destabilization of the of sp(3) bonding phase in favour of sp(2) bonding at a temperature of about 1300 degrees C which agrees very well with the reported value of 1100 degrees C. |
|
Address |
|
|
Corporate Author |
|
Thesis |
|
|
Publisher |
|
Place of Publication ![sorted by Place of Publication field, ascending order (up)](img/sort_asc.gif) |
London |
Editor |
|
|
Language |
|
Wos |
000252922900026 |
Publication Date |
2007-12-28 |
|
Series Editor |
|
Series Title |
|
Abbreviated Series Title |
|
|
Series Volume |
|
Series Issue |
|
Edition |
|
|
ISSN |
0953-8984;1361-648X; |
ISBN |
|
Additional Links |
UA library record; WoS full record; WoS citing articles |
|
Impact Factor |
2.649 |
Times cited |
11 |
Open Access |
|
|
Notes |
|
Approved |
Most recent IF: 2.649; 2008 IF: 1.900 |
|
Call Number |
UA @ lucian @ c:irua:67461 |
Serial |
840 |
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 ![sorted by Place of Publication field, ascending order (up)](img/sort_asc.gif) |
London |
Editor |
|
|
Language |
|
Wos |
000260131700007 |
Publication Date |
2008-10-02 |
|
Series Editor |
|
Series Title |
|
Abbreviated Series Title |
|
|
Series Volume |
|
Series Issue |
|
Edition |
|
|
ISSN |
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 |
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 |
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 ![sorted by Place of Publication field, ascending order (up)](img/sort_asc.gif) |
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 |
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 ![sorted by Place of Publication field, ascending order (up)](img/sort_asc.gif) |
London |
Editor |
|
|
Language |
|
Wos |
000253177900018 |
Publication Date |
2008-01-29 |
|
Series Editor |
|
Series Title |
|
Abbreviated Series Title |
|
|
Series Volume |
|
Series Issue |
|
Edition |
|
|
ISSN |
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 |
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 ![sorted by Place of Publication field, ascending order (up)](img/sort_asc.gif) |
London |
Editor |
|
|
Language |
|
Wos |
000260441000008 |
Publication Date |
2008-06-08 |
|
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 |
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 |
Permanent link to this record |
|
|
|
|
Author |
Nowak, M.P.; Szafran, B.; Peeters, F.M. |
|
Title |
Manipulation of two-electron states by the electric field in stacked self-assembled dots |
Type |
A1 Journal article |
|
Year |
2008 |
Publication |
Journal of physics : condensed matter |
Abbreviated Journal |
J Phys-Condens Mat |
|
Volume |
20 |
Issue |
39 |
Pages |
395225,1-395225,14 |
|
Keywords |
A1 Journal article; Condensed Matter Theory (CMT) |
|
Abstract |
A pair of electrons in vertically stacked self-assembled quantum dots is studied and the singlettriplet energy splitting is calculated in an external electric field using the configuration-interaction method. We show that for double quantum dots the dependence of the singlet energy levels on the electric field involves multiple avoided crossings of three energy levels. The exchange interaction, i.e., the energy difference of the lowest triplet and lowest singlet states, can be tuned by an electric field in a wide range of several tens of meV. For electric fields exceeding a threshold value the exchange interaction becomes a linear function of the field when the two electrons in the singlet state start to occupy the same dot. We also consider non-symmetric confinement, non-perfectly aligned dots, in horizontal as well as vertical field orientation. In a stack of three vertically coupled dots the depth of the confinement in the central dot can be used to enhance the exchange interaction. For a deeper central dot the dependence of the exchange interaction on the electric field is anomalousit initially decreases when the field is applied in both directions parallel and antiparallel to the axis of the stack. Such a behavior is never observed for a pair of quantum dots. |
|
Address |
|
|
Corporate Author |
|
Thesis |
|
|
Publisher |
|
Place of Publication ![sorted by Place of Publication field, ascending order (up)](img/sort_asc.gif) |
London |
Editor |
|
|
Language |
|
Wos |
000259034200032 |
Publication Date |
2008-09-05 |
|
Series Editor |
|
Series Title |
|
Abbreviated Series Title |
|
|
Series Volume |
|
Series Issue |
|
Edition |
|
|
ISSN |
0953-8984;1361-648X; |
ISBN |
|
Additional Links |
UA library record; WoS full record; WoS citing articles |
|
Impact Factor |
2.649 |
Times cited |
5 |
Open Access |
|
|
Notes |
|
Approved |
Most recent IF: 2.649; 2008 IF: 1.900 |
|
Call Number |
UA @ lucian @ c:irua:76592 |
Serial |
1940 |
Permanent link to this record |
|
|
|
|
Author |
Zhang, H.; Salje, E.K.H.; Schryvers, D.; Bartova, B. |
|
Title |
The martensitic phase transition in Ni-Al: experimental observation of excess entropy and heterogeneous spontaneous strain |
Type |
A1 Journal article |
|
Year |
2008 |
Publication |
Journal of physics : condensed matter |
Abbreviated Journal |
J Phys-Condens Mat |
|
Volume |
20 |
Issue |
5 |
Pages |
055220,1-7 |
|
Keywords |
A1 Journal article; Electron microscopy for materials research (EMAT) |
|
Abstract |
|
|
Address |
|
|
Corporate Author |
|
Thesis |
|
|
Publisher |
|
Place of Publication ![sorted by Place of Publication field, ascending order (up)](img/sort_asc.gif) |
London |
Editor |
|
|
Language |
|
Wos |
000252923400023 |
Publication Date |
2008-01-19 |
|
Series Editor |
|
Series Title |
|
Abbreviated Series Title |
|
|
Series Volume |
|
Series Issue |
|
Edition |
|
|
ISSN |
0953-8984;1361-648X; |
ISBN |
|
Additional Links |
UA library record; WoS full record; WoS citing articles |
|
Impact Factor |
2.649 |
Times cited |
7 |
Open Access |
|
|
Notes |
Multimat (MRTN-CT-2004-505226) |
Approved |
Most recent IF: 2.649; 2008 IF: 1.900 |
|
Call Number |
UA @ lucian @ c:irua:67710 |
Serial |
1948 |
Permanent link to this record |
|
|
|
|
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 ![sorted by Place of Publication field, ascending order (up)](img/sort_asc.gif) |
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 |
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 ![sorted by Place of Publication field, ascending order (up)](img/sort_asc.gif) |
London |
Editor |
|
|
Language |
|
Wos |
000260738100024 |
Publication Date |
2008-10-24 |
|
Series Editor |
|
Series Title |
|
Abbreviated Series Title |
|
|
Series Volume |
|
Series Issue |
|
Edition |
|
|
ISSN |
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 ![sorted by Place of Publication field, ascending order (up)](img/sort_asc.gif) |
London |
Editor |
|
|
Language |
|
Wos |
000253177800006 |
Publication Date |
2008-01-09 |
|
Series Editor |
|
Series Title |
|
Abbreviated Series Title |
|
|
Series Volume |
|
Series Issue |
|
Edition |
|
|
ISSN |
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 ![sorted by Place of Publication field, ascending order (up)](img/sort_asc.gif) |
London |
Editor |
|
|
Language |
|
Wos |
000254153900022 |
Publication Date |
2008-02-27 |
|
Series Editor |
|
Series Title |
|
Abbreviated Series Title |
|
|
Series Volume |
|
Series Issue |
|
Edition |
|
|
ISSN |
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 |
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 ![sorted by Place of Publication field, ascending order (up)](img/sort_asc.gif) |
Luton |
Editor |
|
|
Language |
|
Wos |
000255600600055 |
Publication Date |
2007-08-30 |
|
Series Editor |
|
Series Title |
|
Abbreviated Series Title |
|
|
Series Volume |
|
Series Issue |
|
Edition |
|
|
ISSN |
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 |
Permanent link to this record |
|
|
|
|
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 ![sorted by Place of Publication field, ascending order (up)](img/sort_asc.gif) |
Luton |
Editor |
|
|
Language |
|
Wos |
000255600600013 |
Publication Date |
2007-09-05 |
|
Series Editor |
|
Series Title |
|
Abbreviated Series Title |
|
|
Series Volume |
|
Series Issue |
|
Edition |
|
|
ISSN |
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 |
Permanent link to this record |
|
|
|
|
Author |
Silhanek, A.V.; van de Vondel, J.; Moshchalkov, V.V.; Metlushko, V.; Ilic, B.; Misko, V.R.; Peeters, F.M. |
|
Title |
Comment on “Transverse rectification in superconducting thin films with arrays of asymmetric defects” |
Type |
Editorial |
|
Year |
2008 |
Publication |
Applied physics letters |
Abbreviated Journal |
Appl Phys Lett |
|
Volume |
92 |
Issue |
17 |
Pages |
|
|
Keywords |
Editorial; Condensed Matter Theory (CMT) |
|
Abstract |
|
|
Address |
|
|
Corporate Author |
|
Thesis |
|
|
Publisher |
Amer inst physics |
Place of Publication ![sorted by Place of Publication field, ascending order (up)](img/sort_asc.gif) |
Melville |
Editor |
|
|
Language |
|
Wos |
000255524000100 |
Publication Date |
2008-05-04 |
|
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 |
20 |
Open Access |
|
|
Notes |
|
Approved |
Most recent IF: 3.411; 2008 IF: 3.726 |
|
Call Number |
UA @ lucian @ c:irua:68867 |
Serial |
412 |
Permanent link to this record |
|
|
|
|
Author |
Verhulst, S.L.; de Backer, J.; Van Gaal, L.; de Backer, W.; Desager, K. |
|
Title |
Adenotonsillectomy as first-line treatment for sleep-disordered breathing in obese children |
Type |
L1 Letter to the editor |
|
Year |
2008 |
Publication |
American journal of respiratory and critical care medicine |
Abbreviated Journal |
Am J Resp Crit Care |
|
Volume |
177 |
Issue |
12 |
Pages |
1399 |
|
Keywords |
L1 Letter to the editor; Condensed Matter Theory (CMT); Laboratory Experimental Medicine and Pediatrics (LEMP) |
|
Abstract |
|
|
Address |
|
|
Corporate Author |
|
Thesis |
|
|
Publisher |
|
Place of Publication ![sorted by Place of Publication field, ascending order (up)](img/sort_asc.gif) |
New York |
Editor |
|
|
Language |
|
Wos |
|
Publication Date |
0000-00-00 |
|
Series Editor |
|
Series Title |
|
Abbreviated Series Title |
|
|
Series Volume |
|
Series Issue |
|
Edition |
|
|
ISSN |
1073-449x; 1535-4970 |
ISBN |
|
Additional Links |
UA library record; WoS full record; WoS citing articles |
|
Impact Factor |
13.204 |
Times cited |
|
Open Access |
|
|
Notes |
|
Approved |
Most recent IF: 13.204; 2008 IF: 9.792 |
|
Call Number |
UA @ lucian @ c:irua:68864 |
Serial |
59 |
Permanent link to this record |
|
|
|
|
Author |
de Backer, J.W.; Vos, W.G.; Verhulst, S.L.; de Backer, W. |
|
Title |
Novel imaging techniques using computer methods for the evaluation of the upper airway in patients with sleep-disordered breathing: a comprehensive review |
Type |
A1 Journal article |
|
Year |
2008 |
Publication |
Sleep medicine reviews |
Abbreviated Journal |
Sleep Med Rev |
|
Volume |
12 |
Issue |
6 |
Pages |
437-447 |
|
Keywords |
A1 Journal article; Condensed Matter Theory (CMT); Laboratory Experimental Medicine and Pediatrics (LEMP) |
|
Abstract |
Patients with sleep related breathing disorders (SRBD) can be treated with nasal continuous positive airway pressure (nCPAP) or with several upper airway (UA) interventions. While nCPAP is almost always effective when clinically well tolerated, the therapeutic outcome of UA surgery and UA devices is difficult to predict. The improvement of our capability to perform the latter predictions more accurately is of great clinical importance since it will prevent patients to be treated with ineffective, sometimes irreversible, techniques. In this review we describe the importance of new imaging methods in this respect. We first refer to the most important pathophysiological mechanisms known so far to play a role in SRBD, indicating that functional imaging could elucidate these mechanisms in a patient specific manner. Then we describe the new technologies that make UA imaging more functional referring to the data as they are presently available. Finally we summarise the studies that do indicate that the use of functional imaging of the UA in SRBD patients may significantly help to predict the clinical outcome after UA interventions. |
|
Address |
|
|
Corporate Author |
|
Thesis |
|
|
Publisher |
|
Place of Publication ![sorted by Place of Publication field, ascending order (up)](img/sort_asc.gif) |
New York |
Editor |
|
|
Language |
|
Wos |
000261904500003 |
Publication Date |
2008-10-16 |
|
Series Editor |
|
Series Title |
|
Abbreviated Series Title |
|
|
Series Volume |
|
Series Issue |
|
Edition |
|
|
ISSN |
1087-0792; |
ISBN |
|
Additional Links |
UA library record; WoS full record; WoS citing articles |
|
Impact Factor |
8.958 |
Times cited |
33 |
Open Access |
|
|
Notes |
|
Approved |
Most recent IF: 8.958; 2008 IF: 6.143 |
|
Call Number |
UA @ lucian @ c:irua:71640 |
Serial |
2378 |
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. |
|
Address |
|
|
Corporate Author |
|
Thesis |
|
|
Publisher |
American Institute of Physics |
Place of Publication ![sorted by Place of Publication field, ascending order (up)](img/sort_asc.gif) |
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 |
Permanent link to this record |
|
|
|
|
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 ![sorted by Place of Publication field, ascending order (up)](img/sort_asc.gif) |
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 |
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 |
Martens, T.; Bogaerts, A.; Brok, W.J.M.; van Dijk, J. |
|
Title |
The dominant role of impurities in the composition of high pressure noble gas plasmas |
Type |
A1 Journal article |
|
Year |
2008 |
Publication |
Applied physics letters |
Abbreviated Journal |
Appl Phys Lett |
|
Volume |
92 |
Issue |
4 |
Pages |
041504,1-3 |
|
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 ![sorted by Place of Publication field, ascending order (up)](img/sort_asc.gif) |
New York, N.Y. |
Editor |
|
|
Language |
|
Wos |
000252860400026 |
Publication Date |
2008-02-04 |
|
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 |
115 |
Open Access |
|
|
Notes |
|
Approved |
Most recent IF: 3.411; 2008 IF: 3.726 |
|
Call Number |
UA @ lucian @ c:irua:66820 |
Serial |
748 |
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 |
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 ![sorted by Place of Publication field, ascending order (up)](img/sort_asc.gif) |
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 |
Halley, D.; Majjad, H.; Bowen, M.; Najjari, N.; Henry, Y.; Ulhaq-Bouillet, C.; Weber, W.; Bertoni, G.; Verbeeck, J.; Van Tendeloo, G. |
|
Title |
Electrical switching in Fe/Cr/MgO/Fe magnetic tunnel junctions |
Type |
A1 Journal article |
|
Year |
2008 |
Publication |
Applied physics letters |
Abbreviated Journal |
Appl Phys Lett |
|
Volume |
92 |
Issue |
21 |
Pages |
212115,1-3 |
|
Keywords |
A1 Journal article; Electron microscopy for materials research (EMAT) |
|
Abstract |
Hysteretic resistance switching is observed in epitaxial Fe/Cr/MgO/Fe magnetic tunnel junctions under bias voltage cycling between negative and positive values of about 1 V. The junctions switch back and forth between high- and low-resistance states, both of which depend on the device bias history. A linear dependence is found between the magnitude of the tunnel magnetoresistance and the crafted resistance of the junctions. To explain these results, a model is proposed that considers electron transport both by elastic tunneling and by defect-assisted transmission. (c) 2008 American Institute of Physics. |
|
Address |
|
|
Corporate Author |
|
Thesis |
|
|
Publisher |
American Institute of Physics |
Place of Publication ![sorted by Place of Publication field, ascending order (up)](img/sort_asc.gif) |
New York, N.Y. |
Editor |
|
|
Language |
|
Wos |
000256303500042 |
Publication Date |
2008-06-02 |
|
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 |
33 |
Open Access |
|
|
Notes |
|
Approved |
Most recent IF: 3.411; 2008 IF: 3.726 |
|
Call Number |
UA @ lucian @ c:irua:69284UA @ admin @ c:irua:69284 |
Serial |
894 |
Permanent link to this record |
|
|
|
|
Author |
Sercu, S.; Zhang, L.; Merregaert, J. |
|
Title |
The extracellular matrix protein 1: its molecular interaction and implication in tumor progression |
Type |
A1 Journal article |
|
Year |
2008 |
Publication |
Cancer investigation |
Abbreviated Journal |
Cancer Invest |
|
Volume |
26 |
Issue |
4 |
Pages |
375-384 |
|
Keywords |
A1 Journal article; Electron microscopy for materials research (EMAT) |
|
Abstract |
|
|
Address |
|
|
Corporate Author |
|
Thesis |
|
|
Publisher |
|
Place of Publication ![sorted by Place of Publication field, ascending order (up)](img/sort_asc.gif) |
New York, N.Y. |
Editor |
|
|
Language |
|
Wos |
000255370000008 |
Publication Date |
2008-04-28 |
|
Series Editor |
|
Series Title |
|
Abbreviated Series Title |
|
|
Series Volume |
|
Series Issue |
|
Edition |
|
|
ISSN |
0735-7907;1532-4192; |
ISBN |
|
Additional Links |
UA library record; WoS full record; WoS citing articles |
|
Impact Factor |
2.007 |
Times cited |
41 |
Open Access |
|
|
Notes |
|
Approved |
Most recent IF: 2.007; 2008 IF: 1.976 |
|
Call Number |
UA @ lucian @ c:irua:68573 |
Serial |
1160 |
Permanent link to this record |
|
|
|
|
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 ![sorted by Place of Publication field, ascending order (up)](img/sort_asc.gif) |
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 |
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 |
Permanent link to this record |
|
|
|
|
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 ![sorted by Place of Publication field, ascending order (up)](img/sort_asc.gif) |
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 |
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 |
Permanent link to this record |
|
|
|
|
Author |
Saniz, R.; Norman, M.R.; Freeman, A.J. |
|
Title |
Orbital mixing and nesting in the bilayer manganites La2-2xSr1+2xMn2O7 |
Type |
A1 Journal article |
|
Year |
2008 |
Publication |
Physical review letters |
Abbreviated Journal |
Phys Rev Lett |
|
Volume |
101 |
Issue |
23 |
Pages |
236402-236404 |
|
Keywords |
A1 Journal article; Condensed Matter Theory (CMT) |
|
Abstract |
A first principles study of La(2-2x)Sr(1+2x)Mn(2)O(7) compounds for doping levels 0.3 <= x <= 0.5 shows that the low energy electronic structure of the majority spin carriers is determined by strong momentum-dependent interactions between the Mn e(g) d(x)(2)-y(2) and d(3z)(2)-r(2) orbitals, which, in addition to an x-dependent Jahn-Teller distortion, differ in the ferromagnetic and antiferromagnetic phases. The Fermi surface exhibits nesting behavior that is reflected by peaks in the static susceptibility, whose positions as a function of momentum have a nontrivial dependence on x. |
|
Address |
|
|
Corporate Author |
|
Thesis |
|
|
Publisher |
|
Place of Publication ![sorted by Place of Publication field, ascending order (up)](img/sort_asc.gif) |
New York, N.Y. |
Editor |
|
|
Language |
|
Wos |
000261431200045 |
Publication Date |
2008-12-03 |
|
Series Editor |
|
Series Title |
|
Abbreviated Series Title |
|
|
Series Volume |
|
Series Issue |
|
Edition |
|
|
ISSN |
0031-9007;1079-7114; |
ISBN |
|
Additional Links |
UA library record; WoS full record; WoS citing articles |
|
Impact Factor |
8.462 |
Times cited |
14 |
Open Access |
|
|
Notes |
|
Approved |
Most recent IF: 8.462; 2008 IF: 7.180 |
|
Call Number |
UA @ lucian @ c:irua:102602 |
Serial |
2498 |
Permanent link to this record |
|
|
|
|
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 ![sorted by Place of Publication field, ascending order (up)](img/sort_asc.gif) |
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 |
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 |
Permanent link to this record |
|
|
|
|
Author |
Croitoru, M.D.; Gladilin, V.N.; Fomin, V.M.; Devreese, J.T.; Magnus, W.; Schoenmaker, W.; Sorée, B. |
|
Title |
Quantum transport in an ultra-thin SOI MOSFET: influence of the channel thickness on the I-V characteristics |
Type |
A1 Journal article |
|
Year |
2008 |
Publication |
Solid state communications |
Abbreviated Journal |
Solid State Commun |
|
Volume |
147 |
Issue |
1/2 |
Pages |
31-35 |
|
Keywords |
A1 Journal article; Theory of quantum systems and complex systems; Condensed Matter Theory (CMT); Electron microscopy for materials research (EMAT) |
|
Abstract |
|
|
Address |
|
|
Corporate Author |
|
Thesis |
|
|
Publisher |
|
Place of Publication ![sorted by Place of Publication field, ascending order (up)](img/sort_asc.gif) |
New York, N.Y. |
Editor |
|
|
Language |
|
Wos |
000257220400009 |
Publication Date |
2008-04-26 |
|
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 |
8 |
Open Access |
|
|
Notes |
|
Approved |
Most recent IF: 1.554; 2008 IF: 1.557 |
|
Call Number |
UA @ lucian @ c:irua:69748 |
Serial |
2794 |
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 |
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 ![sorted by Place of Publication field, ascending order (up)](img/sort_asc.gif) |
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 |
Khotkevych, V.V.; Milošević, M.V.; Bending, S.J. |
|
Title |
A scanning Hall probe microscope for high resolution magnetic imaging down to 300 mK |
Type |
A1 Journal article |
|
Year |
2008 |
Publication |
The review of scientific instruments |
Abbreviated Journal |
Rev Sci Instrum |
|
Volume |
79 |
Issue |
12 |
Pages |
123708 |
|
Keywords |
A1 Journal article; Condensed Matter Theory (CMT) |
|
Abstract |
We present the design, construction, and performance of a low-temperature scanning Hall probe microscope with submicron lateral resolution and a large scanning range. The detachable microscope head is mounted on the cold flange of a commercial 3He-refrigerator (Oxford Instruments, Heliox VT-50) and operates between room temperature and 300 mK. It is fitted with a three-axis slip-stick nanopositioner that enables precise in situ adjustment of the probe location within a 6×6×7 mm3 space. The local magnetic induction at the sample surface is mapped with an easily changeable microfabricated Hall probe [typically GsAs/AlGaAs or AlGaAs/InGaAs/GaAs Hall sensors with integrated scanning tunnel microscopy (STM) tunneling tips] and can achieve minimum detectable fields 10 mG/Hz1/2. The Hall probe is brought into very close proximity to the sample surface by sensing and controlling tunnel currents at the integrated STM tip. The instrument is capable of simultaneous tunneling and Hall signal acquisition in surface-tracking mode. We illustrate the potential of the system with images of superconducting vortices at the surface of a Nb thin film down to 372 mK, and also of labyrinth magnetic-domain patterns of an yttrium iron garnet film captured at room temperature. |
|
Address |
|
|
Corporate Author |
|
Thesis |
|
|
Publisher |
|
Place of Publication ![sorted by Place of Publication field, ascending order (up)](img/sort_asc.gif) |
New York, N.Y. |
Editor |
|
|
Language |
|
Wos |
000262224800032 |
Publication Date |
2008-12-12 |
|
Series Editor |
|
Series Title |
|
Abbreviated Series Title |
|
|
Series Volume |
|
Series Issue |
|
Edition |
|
|
ISSN |
0034-6748; |
ISBN |
|
Additional Links |
UA library record; WoS full record; WoS citing articles |
|
Impact Factor |
1.515 |
Times cited |
14 |
Open Access |
|
|
Notes |
|
Approved |
Most recent IF: 1.515; 2008 IF: 1.738 |
|
Call Number |
UA @ lucian @ c:irua:75725 |
Serial |
2942 |
Permanent link to this record |