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“The application of laser beam diffraction and scattering methods in the measurement of shape and determination of material parameters”. Sreckovic MZ, Tomic E, Ostojic SM, Ilic JT, Bundaleski N, Sekulic RS, Mlinar V, Lasers in Engineering (Old City Publishing) 17, 179 (2007)
Abstract: Lasers can be used for many applications including determination of size, in addition to the theory of diffraction and material dispersion phenomena. In this paper we calculated the corrections in angular intensity for the Gaussian and uniform particle distributions, the scattering intensity on cylindrical objects. We also evaluated the necessary mathematical summations. In addition, we analyse and Simulate the special positions of detectors using laser Doppler anemometric (LDA) methods, which can be used to determine the particle diameter. The dispersion measurements for actual fibres are given at the end. The geometric and material parameters of these fibres were taken before the evaluation of the angular scattering intensity.
Keywords: A1 Journal article; Condensed Matter Theory (CMT)
Impact Factor: 0.214
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“Formation of carbon nitride nanospheres by ion implantation”. Thomé, T, Colaux JL, Colomer J-F, Bertoni G, Terwagne G, Materials chemistry and physics 103, 290 (2007). http://doi.org/10.1016/j.matchemphys.2007.02.028
Abstract: Carbon nitride nanospheres have been synthesized into copper by simultaneous high fluence (10(18) at. cm(-2)) implantations of C-12 and N-15 ions. The composition of the implanted region has been measured using C-12(d,p(0))C-13 and N-15(d,alpha(0))C-13 nuclear reactions induced by a 1.05 MeV deuteron beam. The C-12 and N-15 depth profiles are very close and the retained doses into copper are relatively high, which indicates that carbon and nitrogen diffusion processes are likely limited during implantation. High resolution transmission electron microscopy (HRTEM) observations and electron diffraction (ED) analyses have been carried out to determine the structure of the nanospheres formed during implantation. Some consist in small hollow amorphous nanocapsules with sizes ranging from 30 to 100 nm. Large gas bubbles with diameters up to 300 mn have also been observed in the copper matrix. Electron energy-loss spectroscopy (EELS) measurements performed on the small nanocapsules indicate that their shells are composed of carbon and nitrogen. (c) 2007 Elsevier B.V. All rights reserved.
Keywords: A1 Journal article; Electron microscopy for materials research (EMAT)
Impact Factor: 2.084
Times cited: 1
DOI: 10.1016/j.matchemphys.2007.02.028
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“On the use of TEM in the characterization of nanocomposites”. Monticelli O, Musina Z, Russo S, Bals S, Materials letters 61, 3446 (2007). http://doi.org/10.1016/j.matlet.2006.11.086
Abstract: Both an organically modified commercial clay of montmorillonite type (MMT) and its nanocomposites, based either on polyamide 6 (PA6) or an epoxy resin, as matrix polymer, have been characterized by transmission electron microscopy (TEM). Sample micrographs, taken at increasing exposure times (t(e)), have shown the gradual disappearance of clay layers, because of an amorphisation of the MMT crystalline structures caused by prolonged sample exposure to electron beam. Indeed, the above phenomenon, which is mostly evident in the case of intercalated nanocomposites, makes the detection of the layered silicate dispersion in the polymer matrix rather difficult and compels to perform TEM measurements using very short exposure times. Moreover, the microscopy accelerating voltage has turned out to affect sample stability; namely, when decreasing the above parameter, the disappearance of clay structure occurs at lower exposure times. (C) 2006 Elsevier B.V. All rights reserved.
Keywords: A1 Journal article; Electron microscopy for materials research (EMAT)
Impact Factor: 2.572
Times cited: 28
DOI: 10.1016/j.matlet.2006.11.086
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“Shape selective growth of single crystalline MnOOH multipods and 1D nanowires by a reductive hydrothermal method”. Mi Y, Zhang X, Yang Z, Li Y, Zhou S, Zhang H, Zhu W, He D, Wang J, Van Tendeloo G, Materials letters 61, 1781 (2007). http://doi.org/10.1016/j.matlet.2006.07.130
Keywords: A1 Journal article; Electron microscopy for materials research (EMAT)
Impact Factor: 2.572
Times cited: 13
DOI: 10.1016/j.matlet.2006.07.130
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“:Ba2.1Bi0.9(O, F)6.8-\delta: a new ordered anion-excess fluorite”. Prituzhalov VA, Abakumov AM, Ardashnikova EI, Dolgikh VA, Van Tendeloo G, Materials research bulletin 42, 861 (2007). http://doi.org/10.1016/j.materresbull.2006.08.023
Keywords: A1 Journal article; Electron microscopy for materials research (EMAT)
Impact Factor: 2.446
Times cited: 4
DOI: 10.1016/j.materresbull.2006.08.023
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“Deposition of vanadium silicalite-1 nanoparticles on SBA-15 materials: structural and transport characteristics of SBA-VS-15”. Meynen V, Cool P, Vansant EF, Kortunov P, Grinberg F, Kärger J, Mertens M, Lebedev OI, Van Tendeloo G, Microporous and mesoporous materials 99, 14 (2007). http://doi.org/10.1016/j.micromeso.2006.08.029
Keywords: A1 Journal article; Electron microscopy for materials research (EMAT); Laboratory of adsorption and catalysis (LADCA)
Impact Factor: 3.615
Times cited: 23
DOI: 10.1016/j.micromeso.2006.08.029
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“High-quality sample preparation by low kV FIB thinning for analytical TEM measurements”. Bals S, Tirry W, Geurts R, Yang Z, Schryvers D, Microscopy and microanalysis 13, 80 (2007). http://doi.org/10.1017/S1431927607070018
Abstract: Focused ion beam specimen preparation has been used for NiTi samples and SrTiO(3)/SrRuO(3) multilayers with prevention of surface amorphization and Ga implantation by a 2-kV cleaning procedure. Transmission electron microscopy techniques show that the samples are of high quality with a controlled thickness over large scales. Furthermore, preferential thinning effects in multicompounds are avoided, which is important when analytical transmission electron microscopy measurements need to be interpreted in a quantitative manner. The results are compared to similar measurements acquired for samples obtained using conventional preparation techniques such as electropolishing for alloys and ion milling for oxides.
Keywords: A1 Journal article; Electron microscopy for materials research (EMAT)
Impact Factor: 1.891
Times cited: 82
DOI: 10.1017/S1431927607070018
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“Structural, chemical and electronic characterization of ceramic materials using quantitative (scanning) transmission electron microscopy”. Bals S, Van Aert S, Verbeeck J, Van Tendeloo G, Microscopy and microanalysis 13, 332 (2007). http://doi.org/10.1017/S1431927607081664
Keywords: A1 Journal article; Electron microscopy for materials research (EMAT)
Impact Factor: 1.891
DOI: 10.1017/S1431927607081664
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“Microanalysis (micro-XRF, micro-XANES, and micro-XRD) of a tertiary sediment using microfocused synchrotron radiation”. Denecke MA, Somogyi A, Janssens K, Simon R, Dardenne K, Noseck U, Microscopy and microanalysis 13, 165 (2007). http://doi.org/10.1017/S1431927607070316
Keywords: A1 Journal article; AXES (Antwerp X-ray Analysis, Electrochemistry and Speciation)
Impact Factor: 1.891
Times cited: 31
DOI: 10.1017/S1431927607070316
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“Evaluation of top, angle, and side cleaned FIB samples for TEM analysis”. Montoya E, Bals S, Rossell MD, Schryvers D, Van Tendeloo G, Microscopy research and technique 70, 1060 (2007). http://doi.org/10.1002/jemt.20514
Abstract: ITEM specimens of a LaAlO3/SrTiO3 multilayer are prepared by FIB with internal lift out. Using a Ga+1 beam of 5 kV, a final cleaning step yielding top, top-angle, side, and bottom-angle cleaning is performed. Different cleaning procedures, which can be easily implemented in a dual beam FIB system, are described and compared; all cleaning types produce thin lamellae, useful for HRTEM and HAADF-STEM work up to atomic resolution. However, the top cleaned lamellae are strongly affected by the curtain effect. Top-angle cleaned specimens show an amorphous layer of around 5 nm at the specimen surfaces, due to damage and redeposition. Furthermore, it is observed that the LaAlO3 layers are preferentially destroyed and transformed into amorphous material, during the thinning process.
Keywords: A1 Journal article; Electron microscopy for materials research (EMAT)
Impact Factor: 1.147
Times cited: 36
DOI: 10.1002/jemt.20514
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“Quantitative three-dimensional reconstruction of catalyst particles for bamboo-like carbon nanotubes”. Bals S, Batenburg J, Verbeeck J, Sijbers J, Van Tendeloo G, Nano letters 7, 3669 (2007). http://doi.org/10.1021/nl071899m
Abstract: The three-dimensional (3D) structure and chemical composition of bamboo-like carbon nanotubes including the catalyst particles that are. used during their growth are studied by discrete electron tomography in combination with energy-filtered transmission electron microscopy. It is found that cavities are present in the catalyst particles. Furthermore, only a small percentage of the catalyst particles consist of pure Cu, since a large volume fraction of the particles is oxidized to CU(2)0. These volume fractions are determined quantitatively from 3D reconstructions obtained by discrete tomography.
Keywords: A1 Journal article; Electron microscopy for materials research (EMAT); Vision lab
Impact Factor: 12.712
Times cited: 78
DOI: 10.1021/nl071899m
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“Tunable quantum dots in bilayer graphene”. Milton Pereira J, Vasilopoulos P, Peeters FM, Nano letters 7, 946 (2007). http://doi.org/10.1021/nl062967s
Keywords: A1 Journal article; Condensed Matter Theory (CMT)
Impact Factor: 12.712
Times cited: 167
DOI: 10.1021/nl062967s
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“CdSe quantum dot formation: alternative paths to relaxation of a strained CdSe layer and influence of the capping conditions”. Robin I-C, Aichele T, Bougerol C, André, R, Tatarenko S, Bellet-Amalric E, van Daele B, Van Tendeloo G, Nanotechnology 18, 265701 (2007). http://doi.org/10.1088/0957-4484/18/26/265701
Keywords: A1 Journal article; Electron microscopy for materials research (EMAT)
Impact Factor: 3.44
Times cited: 8
DOI: 10.1088/0957-4484/18/26/265701
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“Structural and luminescence investigation on gadolinium gallium garnet nanocrystalline powders prepared by solution combustion synthesis”. Krsmanovic R, Morozov VA, Lebedev OI, Polizzi S, Speghini A, Bettinelli M, Van Tendeloo G, Nanotechnology 18, 325604 (2007). http://doi.org/10.1088/0957-4484/18/32/325604
Abstract: Nanocrystalline powders of undoped and lanthanide (Pr3+, Tm3+)- doped gadolinium gallium garnet, Gd3Ga5O12 (GGG), were prepared by propellant synthesis and studied by x-ray powder diffraction (XRD), electron diffraction (ED), high-resolution electron microscopy (HREM) and luminescence spectroscopy. The x-ray diffraction patterns of the GGG samples were analysed using the Rietveld method. The Rietveld refinement reveals the existence of two garnet-type phases: both are cubic (space group Ia $(3) over bar $d) with a slightly different lattice parameter and probably a slightly different composition. Electron diffraction and electron microscopy measurements confirm the x-ray diffraction results. EDX measurements for lanthanide-doped samples show that stable solid solutions with composition Gd(3-x)Ln(x)Ga(5)O(12), x approximate to 0.3 ( Ln = Pr; Tm) have been obtained. The luminescence properties of the Tm3+ -doped nanocrystalline GGG samples were measured and analysed.
Keywords: A1 Journal article; Engineering sciences. Technology; Electron microscopy for materials research (EMAT)
Impact Factor: 3.44
Times cited: 33
DOI: 10.1088/0957-4484/18/32/325604
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“Structural and dynamical aspects of small three-dimensional spherical Coulomb clusters”. Apolinario SWS, Partoens B, Peeters FM, New journal of physics 9, 283 (2007). http://doi.org/10.1088/1367-2630/9/8/283
Keywords: A1 Journal article; Condensed Matter Theory (CMT)
Impact Factor: 3.786
Times cited: 44
DOI: 10.1088/1367-2630/9/8/283
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“ALN nanoparticles XANES analysis: local atomic and electronic structure”. Soldatov A, Yalovega G, Smolentsev G, Kravtsova A, Lamoen D, Balasubramanian C, Marcelli A, Cinque G, Bellucci S, Nuclear Instruments &, Methods In Physics Research Section A-Accelerators Spectrometers Detectors And Associated Equipment 575, 85 (2007). http://doi.org/10.1016/j.nima.2007.01.031
Keywords: A1 Journal article; Electron Microscopy for Materials Science (EMAT);
Impact Factor: 1.362
Times cited: 3
DOI: 10.1016/j.nima.2007.01.031
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“Thin films and superlattices of multiferroic hexagonal rare earth manganites”. Dubourdieu C, Huot G, Gelard I, Roussel H, Lebedev OI, Van Tendeloo G, Philosophical magazine letters 87, 203 (2007). http://doi.org/10.1080/09500830601137173
Keywords: A1 Journal article; Electron microscopy for materials research (EMAT)
Impact Factor: 0.941
Times cited: 17
DOI: 10.1080/09500830601137173
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“Influence of strain, specimen orientation and background estimation on composition evaluation of InAs/GaAs by TEM”. Rossi EHM, Van Tendeloo G, Rosenauer A, Philosophical magazine 87, 4461 (2007). http://doi.org/10.1080/14786430701551905
Keywords: A1 Journal article; Electron microscopy for materials research (EMAT)
Impact Factor: 1.505
Times cited: 1
DOI: 10.1080/14786430701551905
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“Silica-supported chromium oxide: colloids as building blocks”. Hermans I, Breynaert E, Poelman H, de Gryse R, Liang D, Van Tendeloo G, Maes A, Peeters J, Jacobs P, Physical chemistry, chemical physics 9, 5382 (2007). http://doi.org/10.1039/b706601e
Keywords: A1 Journal article; Electron microscopy for materials research (EMAT)
Impact Factor: 4.123
Times cited: 8
DOI: 10.1039/b706601e
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“Aharonov-Bohm oscillations in a mesoscopic ring with asymmetric arm-dependent injection”. Vasilopoulos P, Kálmán O, Peeters FM, Benedict MG, Physical review : B : condensed matter and materials physics 75, 035304 (2007). http://doi.org/10.1103/PhysRevB.75.035304
Keywords: A1 Journal article; Condensed Matter Theory (CMT)
Impact Factor: 3.836
Times cited: 29
DOI: 10.1103/PhysRevB.75.035304
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“Appearance of enhanced Weiss oscillations in graphene: theory”. Matulis A, Peeters FM, Physical review : B : condensed matter and materials physics 75, 125429 (2007). http://doi.org/10.1103/PhysRevB.75.125429
Keywords: A1 Journal article; Condensed Matter Theory (CMT)
Impact Factor: 3.836
Times cited: 65
DOI: 10.1103/PhysRevB.75.125429
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“Correlated many-electron states in a quantum dot containing a single magnetic impurity”. Nguyen NTT, Peeters FM, Physical review : B : condensed matter and materials physics 76, 045315 (2007). http://doi.org/10.1103/PhysRevB.76.045315
Keywords: A1 Journal article; Condensed Matter Theory (CMT)
Impact Factor: 3.836
Times cited: 17
DOI: 10.1103/PhysRevB.76.045315
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“Dependence of superconducting properties on the size and shape of a nanoscale superconductor: from nanowire to film”. Croitoru MD, Shanenko AA, Peeters FM, Physical review : B : condensed matter and materials physics 76, 024511 (2007). http://doi.org/10.1103/PhysRevB.76.024511
Keywords: A1 Journal article; Condensed Matter Theory (CMT); Electron microscopy for materials research (EMAT)
Impact Factor: 3.836
Times cited: 54
DOI: 10.1103/PhysRevB.76.024511
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“Dynamics of molecular nanomagnets in time-dependent external magnetic fields: beyond the Landau-Zener-Stückelberg model”. Földi P, Benedict MG, Milton Pereira J, Peeters FM, Physical review : B : condensed matter and materials physics 75, 104430 (2007). http://doi.org/10.1103/PhysRevB.75.104430
Keywords: A1 Journal article; Condensed Matter Theory (CMT)
Impact Factor: 3.836
Times cited: 17
DOI: 10.1103/PhysRevB.75.104430
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“Effect of the boundary condition on the vortex patterns in mesoscopic three-dimensional superconductors: disk and sphere”. Doria MM, Romaguera AR de C, Peeters FM, Physical review : B : condensed matter and materials physics 75, 064505 (2007). http://doi.org/10.1103/PhysRevB.75.064505
Keywords: A1 Journal article; Condensed Matter Theory (CMT)
Impact Factor: 3.836
Times cited: 37
DOI: 10.1103/PhysRevB.75.064505
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“Electrically induced spin resonance fluorescence: 1: theory”. Nogaret A, Peeters FM, Physical review : B : condensed matter and materials physics 76 (2007). http://doi.org/10.1103/PhysRevB.76.075311
Abstract: We calculate the fluorescence of electron spins confined to a plane and driven into resonance by a magnetic field gradient and a constant magnetic field applied at right angles to each other. We solve the equation of motion of two-dimensional electrons in the magnetic field gradient to derive the dispersion curve of spin oscillators, the amplitude of electron oscillations, the effective magnetic field sensed by the electron spin, and the rate at which electrons are injected from an electrode into spin oscillators. We then switch on the interaction between the spin magnetic dipole and the electromagnetic field to find the fluorescence power radiated by the individual spin oscillators. The rate of radiative decay is first derived, followed by the probability of sequential photon emission whereby a series of spontaneous decays occurs at random times separated by intervals during which the spin performs Rabi oscillations. The quantum correlations between random radiative decays manifest as bursts of emission at regular intervals along the wire. We integrate all multiphoton processes to obtain an exact analytical expression for the radiated electromagnetic power. The present theory obtains all parameters of the problem including magnetodipole coupling, the particle dwell time in the magnetic field gradient, and the spin polarization of the incoming current. The output power contains a fine structure arising from the anharmonicity of electron oscillations and from nonlinear optical effects which both give satellite emission peaks at odd multiples of the fundamental frequency.
Keywords: A1 Journal article; Condensed Matter Theory (CMT)
Impact Factor: 3.836
Times cited: 8
DOI: 10.1103/PhysRevB.76.075311
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“Electrically induced spin resonance fluorescence : 2 : fluorescence spectra”. Nogaret A, Lambert NJ, Peeters FM, Physical Review B 76 (2007). http://doi.org/10.1103/PhysRevB.76.075312
Abstract: We model the fluorescence spectra of planar spin oscillators to find conditions that maximize spin resonance fluorescence. Spin oscillators perform Rabi oscillations under the effect of a periodic effective magnetic field caused by the winding motion of an electron in a gradient of magnetic field. We show that, despite the weak coupling of the spin magnetic dipole to the vacuum, spin oscillators excited by a direct current output a few nanowatts of microwave power, which is comparable to the best microwave sources. The large quantum efficiency relies on the combination of two effects. On the one hand, the spontaneous emission rate is enhanced by the synchronization of spin oscillators, which interact through the microwave field that they emit. On the other hand, the huge Rabi frequencies experienced by spin oscillators promote spins into upper levels of Zeeman transitions, from which a radiative cascade is triggered. We demonstrate different regimes of fluorescence which correspond to different values of the Rabi period relative to the spontaneous decay time and to the oscillator dwell time in the gradient of magnetic field. We investigate the device parameters which make these regimes experimentally accessible and find conditions that optimize microwave output. We find that microwave emission is centered around the cutoff frequency of spin oscillators. This has the advantage that the peak emission frequency may be tuned from zero continuously up to a few hundred gigahertz using an electrostatic gate. Quite remarkably for a spintronics effect, electrically induced spin resonance fluorescence does not require the injection of a spin polarized current. In fact, we show that microwave spectra are mostly independent of the incoming spin polarization except for magnetic waveguides which are shorter than a certain critical length, which we will specify.
Keywords: A1 Journal article; Condensed Matter Theory (CMT)
Impact Factor: 3.836
Times cited: 8
DOI: 10.1103/PhysRevB.76.075312
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“Enhancement and decrease of critical current due to suppression of superconductivity by a magnetic field”. Vodolazov DY, Golubovic DS, Peeters FM, Moshchalkov VV, Physical review : B : condensed matter and materials physics 76, 134505 (2007). http://doi.org/10.1103/PhysRevB.76.134505
Keywords: A1 Journal article; Condensed Matter Theory (CMT)
Impact Factor: 3.836
Times cited: 13
DOI: 10.1103/PhysRevB.76.134505
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“Evidence for a different type of vortex that mediates a continuous fluxoid-state transition in a mesoscopic superconducting ring”. Kanda A, Baelus BJ, Vodolazov DY, Berger J, Furugen R, Ootuka Y, Peeters F, Physical review : B : condensed matter and materials physics 76, 094519 (2007). http://doi.org/10.1103/PhysRevB.76.094519
Keywords: A1 Journal article; Condensed Matter Theory (CMT)
Impact Factor: 3.836
Times cited: 17
DOI: 10.1103/PhysRevB.76.094519
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“Exciton confinement in InAs/InP quantum wires and quantum wells in the presence of a magnetic field”. Sidor Y, Partoens B, Peeters FM, Maes J, Hayne M, Fuster D, González Y, González L, Moshchalkov VV, Physical review : B : condensed matter and materials physics 76, 195320 (2007). http://doi.org/10.1103/PhysRevB.76.195320
Keywords: A1 Journal article; Condensed Matter Theory (CMT)
Impact Factor: 3.836
Times cited: 21
DOI: 10.1103/PhysRevB.76.195320
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