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Nord M, Verbeeck J (2019) Open Source Development Tools for Robust and Reproducible Electron Microscopy Data Analysis. 138–139
Keywords: P3; Electron Microscopy for Materials Science (EMAT) ;
Impact Factor: 1.891
DOI: 10.1017/S1431927619001429
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“The application of transmission electron microscopy (TEM) in the research of inorganic colorants in stained glass windows and parchment illustrations”. Fredrickx P, Wouters J, Schryvers D Archetype, London, page 137 (2003).
Keywords: H3 Book chapter; Electron microscopy for materials research (EMAT)
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“Direct observation of laser-induced crystallization of a-C : H films”. Nistor LC, van Landuyt J, Ralchenko VG, Kononenko TV, Obraztsova ED, Strelnitsky VE, Applied physics A : materials science &, processing 58, 137 (1994). http://doi.org/10.1007/BF00332170
Abstract: The post-growth modification of diamond-like amorphous hydrogenated carbon a-C:H films by laser treatment has been studied by transmission electron microscopy and Raman spectroscopy. a-C:H films grown on Si substrates by benzene decomposition in a rf glow discharge were irradiated with 15 ns pulses of a KrF-excimer laser with fluences in the ran e of E = 50-700 mJ/cm(2). At fluences below 100 mJ/cm(2) an increase in the number of graphitic clusters and in their ordering was evidenced from Raman spectra, while the film structure remained amorphous according to electron microscopy and electron diffraction observations. At higher fluences the appearance of diamond particles of 2-7 nm size, embedded into the lower crystallized graphitic matrix, was observed and simultaneously a progressive growth of graphite nanocrystals with dimensions from 2 nm to 4 nm was deduced from Raman measurements. The maximum thickness of the crystallized surface layer (approximate to 400 nm) and the degree of laser annealing are limited by the film ablation which starts at E > 250 mJ/cm(2). The laser-treated areas lose their chemical inertness. In particular, chemical etching in chromium acid becomes possible, which may be used for patterning the highly inert carbon films.
Keywords: A1 Journal article; Electron microscopy for materials research (EMAT)
Times cited: 73
DOI: 10.1007/BF00332170
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“The properties of SIRT, TVM, and DART for 3D imaging of tubular domains in nanocomposite thin-films and sections”. Chen D, Goris B, Bleichrodt F, Heidari Mezerji H, Bals S, Batenburg KJ, de With G, Friedrich H, Ultramicroscopy 147, 137 (2014). http://doi.org/10.1016/j.ultramic.2014.08.005
Abstract: In electron tomography, the fidelity of the 3D reconstruction strongly depends on the employed reconstruction algorithm. In this paper, the properties of SIRT, TVM and DART reconstructions are studied with respect to having only a limited number of electrons available for imaging and applying different angular sampling schemes. A well-defined realistic model is generated, which consists of tubular domains within a matrix having slab-geometry. Subsequently, the electron tomography workflow is simulated from calculated tilt-series over experimental effects to reconstruction. In comparison with the model, the fidelity of each reconstruction method is evaluated qualitatively and quantitatively based on global and local edge profiles and resolvable distance between particles. Results show that the performance of all reconstruction methods declines with the total electron dose. Overall, SIRT algorithm is the most stable method and insensitive to changes in angular sampling. TVM algorithm yields significantly sharper edges in the reconstruction, but the edge positions are strongly influenced by the tilt scheme and the tubular objects become thinned. The DART algorithm markedly suppresses the elongation artifacts along the beam direction and moreover segments the reconstruction which can be considered a significant advantage for quantification. Finally, no advantage of TVM and DART to deal better with fewer projections was observed.
Keywords: A1 Journal article; Electron microscopy for materials research (EMAT)
Impact Factor: 2.843
Times cited: 42
DOI: 10.1016/j.ultramic.2014.08.005
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“Superspace crystallography : a key to the chemistry and properties”. Pinheiro CB, Abakumov AM, IUCrJ 2, 137 (2015). http://doi.org/10.1107/S2052252514023550
Abstract: An overview is given of the recent advances in the field of modulated molecular and inorganic crystals with an emphasis on the links between incommensurability, intermolecular and interatomic interactions and, wherever possible, the properties of the materials. The importance of detailed knowledge on the modulated structure for understanding the crystal chemistry and the functional properties of modulated phases is shown using selected examples of incommensurate modulations in organic molecular compounds and inorganic complex oxides.
Keywords: A1 Journal article; Electron microscopy for materials research (EMAT)
Impact Factor: 5.793
Times cited: 15
DOI: 10.1107/S2052252514023550
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“Multiscale investigation of quasi-brittle fracture characteristics in a 9Cr–1Mo ferritic–martensitic steel embrittled by liquid lead–bismuth under low cycle fatigue”. Gong X, Marmy P, Volodin A, Amin-Ahmadi B, Qin L, Schryvers D, Gavrilov S, Stergar E, Verlinden B, Wevers M, Seefeldt M, Corrosion science 102, 137 (2016). http://doi.org/10.1016/j.corsci.2015.10.003
Abstract: Liquid metal embrittlement (LME) induced quasi-brittle fracture characteristics of a 9Cr–1Mo ferritic–martensitic steel (T91) after fatigue cracking in lead–bismuth eutectic (LBE) have been investigated at various length scales. The results show that the LME fracture morphology is primarily characterized by quasi-brittle translath flat regions partially covered by nanodimples, shallow secondary cracks propagating along the martensitic lath boundaries as well as tear ridges covered by micro dimples. These diverse LME fracture features likely indicate a LME mechanism involving multiple physical processes, such as weakening induced interatomic decohesion at the crack tip and plastic shearing induced nano/micro voiding in the plastic zone.
Keywords: A1 Journal article; Engineering sciences. Technology; Electron microscopy for materials research (EMAT)
Times cited: 16
DOI: 10.1016/j.corsci.2015.10.003
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“Electron microscopy and X-ray diffraction studies of rapidly quenched Zr-Ni an Hf-Ni ribbons with about 90 at.% Ni”. Cziraki A, Fogarassy F, Van Tendeloo G, Lamparter P, Tegze M, Bakonyi I, Journal of alloys and compounds 210, 135 (1994). http://doi.org/10.1016/0925-8388(94)90128-7
Keywords: A1 Journal article; Electron microscopy for materials research (EMAT)
Impact Factor: 2.999
Times cited: 26
DOI: 10.1016/0925-8388(94)90128-7
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“High-resolution visualization techniques : structural aspects”. Schryvers D, Van Aert S Springer, Berlin, page 135 (2012).
Keywords: H1 Book chapter; Electron microscopy for materials research (EMAT)
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“The paraelectric-ferroelectric phase transition of Bi4Ti3O12 studied by electron microscopy”. Nistor L, Van Tendeloo G, Amelinckx S, Phase transitions 59, 135 (1996)
Keywords: A1 Journal article; Electron microscopy for materials research (EMAT)
Impact Factor: 0.954
Times cited: 6
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“Voidites in polycrystalline natural diamond”. Chen JH, Bernaerts D, Seo JW, Van Tendeloo G, Kagi H, Philosophical magazine letters 77, 135 (1998). http://doi.org/10.1080/095008398178561
Keywords: A1 Journal article; Electron microscopy for materials research (EMAT)
Impact Factor: 0.941
Times cited: 7
DOI: 10.1080/095008398178561
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“Enhancement of critical magnetic field in superconducting nanostructures”. Fomin VM, Devreese JT, Misko VR, 1, 134 (2002)
Keywords: A1 Journal article; Electron Microscopy for Materials Science (EMAT);
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“How precise can atoms of a nanocluster be located in 3D using a tilt series of scanning transmission electron microscopy images?”.Alania M, De Backer A, Lobato I, Krause FF, Van Dyck D, Rosenauer A, Van Aert S, Ultramicroscopy 181, 134 (2017). http://doi.org/10.1016/j.ultramic.2016.12.013
Abstract: In this paper, we investigate how precise atoms of a small nanocluster can ultimately be located in three dimensions (3D) from a tilt series of images acquired using annular dark field (ADF) scanning transmission electron microscopy (STEM). Therefore, we derive an expression for the statistical precision with which the 3D atomic position coordinates can be estimated in a quantitative analysis. Evaluating this statistical precision as a function of the microscope settings also allows us to derive the optimal experimental design. In this manner, the optimal angular tilt range, required electron dose, optimal detector angles, and number of projection images can be determined.
Keywords: A1 Journal article; Electron microscopy for materials research (EMAT); Vision lab
Impact Factor: 2.843
Times cited: 3
DOI: 10.1016/j.ultramic.2016.12.013
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“Anion ordering in fluorinated La2CuO4”. Hadermann J, Abakumov AM, Van Tendeloo G, Shpanchenko RV, Oleinikov PN, Antipov EV s.l., page 133 (1999).
Keywords: H1 Book chapter; Electron microscopy for materials research (EMAT)
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“Demonstration of lanthanum in liver cells by energy-dispersive X-ray spectroscopy, electron energy loss spectroscopy and high-resolution transmission electron microscopy”. Yang Z, Schryvers D, Roels F, d' Haese PC, de Broe ME, Journal of microscopy 223, 133 (2006). http://doi.org/10.1111/j.1365-2818.2006.01601.x
Keywords: A1 Journal article; Electron microscopy for materials research (EMAT); Pathophysiology
Impact Factor: 1.692
Times cited: 29
DOI: 10.1111/j.1365-2818.2006.01601.x
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“Inelastic scattering of high-energy electrons in a crystal in thermal equilibrium with the environment: part 2: solution of the equations and applications to concrete cases”. Fanidis C, van Dyck D, van Landuyt J, Ultramicroscopy 48, 133 (1993)
Keywords: A1 Journal article; Electron microscopy for materials research (EMAT); Vision lab
Impact Factor: 2.436
Times cited: 6
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“The influence of crystal thickness on the image tone”. van Renterghem W, Schryvers D, van Landuyt J, van Roost C, de Keyzer R, Journal of imaging science 47, 133 (2003)
Abstract: It is known that the neutral image tone of a developed photographic film becomes brownish when the thickness of the original silver halide tabular crystals is reduced. We investigate by electron microscopy to what extent the silver filament structure has changed and how it induces the shift in image tone. Therefore, two samples of AgBr {111} tabular crystals with average thicknesses of 160 nm and 90 nm respectively, are compared. It is shown that the dimensions and defect structure of the filaments are comparable, but that the 90 nm crystals result in a more widely spaced structure, which explains the shift in image tone on a qualitative level. The influence of the addition of an image toner, i.e., phenylmercaptotetrazole, on the filament structure is also investigated. An even more open filament structure of longer, but smaller filaments was observed.
Keywords: A1 Journal article; Engineering sciences. Technology; Electron microscopy for materials research (EMAT)
Impact Factor: 0.348
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“Observation of vacancy clustering in FZ-Si crystals during in situ electron irradiation in a high voltage electron microscope”. Fedina L, van Landuyt J, Vanhellemont J, Aseev AL, Nuclear instruments and methods in physics research B112, 133 (1996). http://doi.org/10.1016/0168-583X(95)01277-X
Keywords: A1 Journal article; Electron microscopy for materials research (EMAT)
Impact Factor: 1.124
Times cited: 4
DOI: 10.1016/0168-583X(95)01277-X
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“Thermal conductivity of titanium nitride/titanium aluminum nitride multilayer coatings deposited by lateral rotating cathode arc”. Samani MK, Ding XZ, Khosravian N, Amin-Ahmadi B, Yi Y, Chen G, Neyts EC, Bogaerts A, Tay BK, Thin solid films : an international journal on the science and technology of thin and thick films 578, 133 (2015). http://doi.org/10.1016/j.tsf.2015.02.032
Abstract: A seriesof [TiN/TiAlN]nmultilayer coatingswith different bilayer numbers n=5, 10, 25, 50, and 100 were deposited on stainless steel substrate AISI 304 by a lateral rotating cathode arc technique in a flowing nitrogen atmosphere. The composition and microstructure of the coatings have been analyzed by using energy dispersive X-ray spectroscopy, X-ray diffraction (XRD), and conventional and high-resolution transmission electron microscopy (HRTEM). XRD analysis shows that the preferential orientation growth along the (111) direction is reduced in the multilayer coatings. TEM analysis reveals that the grain size of the coatings decreases with increasing bilayer number. HRTEMimaging of the multilayer coatings shows a high density misfit dislocation between the TiN and TiAlN layers. The cross-plane thermal conductivity of the coatings was measured by a pulsed photothermal reflectance technique. With increasing bilayer number, the multilayer coatings' thermal conductivity decreases gradually. This reduction of thermal conductivity can be ascribed to increased phonon scattering due to the disruption of columnar structure, reduced preferential orientation, decreased grain size of the coatings and present misfit dislocations at the interfaces.
Keywords: A1 Journal article; Electron microscopy for materials research (EMAT); Plasma Lab for Applications in Sustainability and Medicine – Antwerp (PLASMANT)
Impact Factor: 1.879
Times cited: 41
DOI: 10.1016/j.tsf.2015.02.032
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“Crystal chemistry of mercury based layered cuprates and oxycarbonates”. Raveau B, Hervieu M, Michel C, Martin C, Maignan A, Van Tendeloo G Narosa, New Delhi, page 132 (1995).
Keywords: H3 Book chapter; Electron microscopy for materials research (EMAT)
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“Triple ion beam cutting of diamond/Al composites for interface characterization”. Ji G, Tan Z, Shabadi R, Li Z, Grünewald W, Addad A, Schryvers D, Zhang D, Materials characterization 89, 132 (2014). http://doi.org/10.1016/j.matchar.2014.01.008
Abstract: A novel triple ion beam cutting technique was employed to prepare high-quality surfaces of diamond/Al composites for interfacial characterization, which has been unachievable so far. Near-perfect and artifact-free surfaces were obtained without mechanical pre-polishing. Hence, the as-prepared surfaces are readily available for further study and also, ready to be employed in a focus ion beam system for preferential selection of transmission electron microscopy samples. Dramatically different diamond/Al interface configurations – sub-micrometer Al2O3 particles and clean interfaces were unambiguously revealed.
Keywords: A1 Journal article; Electron microscopy for materials research (EMAT)
Impact Factor: 2.714
Times cited: 9
DOI: 10.1016/j.matchar.2014.01.008
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“Imaging of intact MOF-5 nanocrystals by advanced TEM at liquid”. Wiktor C, Turner S, Zacher D, Fischer RA, Van Tendeloo G, Microporous and mesoporous materials: zeolites, clays, carbons and related materials 162, 131 (2012). http://doi.org/10.1016/j.micromeso.2012.06.014
Abstract: First results on the imaging of intact metalorganic framework (MOF) pores in MOF-5 nanocrystals by aberration corrected transmission electron microscopy (TEM) under liquid nitrogen conditions are presented. The applied technique is certainly transferable to other MOF systems, permitting detailed studies of MOF interfaces, MOFnanoparticle interaction and MOF thin films.
Keywords: A1 Journal article; Engineering sciences. Technology; Electron microscopy for materials research (EMAT)
Impact Factor: 3.615
Times cited: 30
DOI: 10.1016/j.micromeso.2012.06.014
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“La microscopie électronique à, transmission (MET) et son utilisation dans l'étude d'inclusions nano-cristallines dans le verre”. Fredrickx P, Schryvers D, L'archéométrie au service des monuments et des oeuvres d'art 10, 131 (2002)
Keywords: A3 Journal article; Electron microscopy for materials research (EMAT)
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“Quantitative study of particle size distribution in an in-situ grown Al-TiB2 composite by synchrotron X-ray diffraction and electron microscopy”. Tang Y, Chen Z, Borbely A, Ji G, Zhong SY, Schryvers D, Ji V, Wang HW, Materials characterization 102, 131 (2015). http://doi.org/10.1016/j.matchar.2015.03.003
Abstract: Synchrotron X-ray diffraction and transmission electron microscopy (TEM) were applied to quantitatively characterize the average particle size and size distribution of free-standing TiB2 particles and TiB2 particles in an insitu grown Al–TiB2 composite. The detailed evaluations were carried out by X-ray line profile analysis using the restrictedmoment method and multiplewhole profile fitting procedure (MWP). Both numericalmethods indicate that the formed TiB2 particles are well crystallized and free of crystal defects. The average particle size determined from different Bragg reflections by the restricted moment method ranges between 25 and 55 nm, where the smallest particle size is determined using the 110 reflection suggesting the highest lateral-growth velocity of (110) facets. TheMWP method has shown that the in-situ grown TiB2 particles have a very low dislocation density (~1011 m−2) and their size distribution can be described by a log-normal distribution. Good agreement was found between the results obtained from the restricted moment and MWP methods, which was further confirmed by TEM.
Keywords: A1 Journal article; Engineering sciences. Technology; Electron microscopy for materials research (EMAT)
Impact Factor: 2.714
Times cited: 41
DOI: 10.1016/j.matchar.2015.03.003
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“High dose efficiency atomic resolution imaging via electron ptychography”. Pennycook TJ, Martinez GT, Nellist PD, Meyer JC, Ultramicroscopy 196, 131 (2019). http://doi.org/10.1016/J.ULTRAMIC.2018.10.005
Abstract: Radiation damage places a fundamental limitation on the ability of microscopy to resolve many types of materials at high resolution. Here we evaluate the dose efficiency of phase contrast imaging with electron ptychography. The method is found to be far more resilient to temporal incoherence than conventional and spherical aberration optimized phase contrast imaging, resulting in significantly greater clarity at a given dose. This robustness is explained by the presence of achromatic lines in the four dimensional ptychographic dataset.
Keywords: A1 Journal article; Electron microscopy for materials research (EMAT)
Impact Factor: 2.843
Times cited: 1
DOI: 10.1016/J.ULTRAMIC.2018.10.005
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Velazco Torrejó,n A (2021) Alternative scan strategies for high resolution STEM imaging. 131 p
Abstract: Currently, a large variety of materials are studied by transmission electron microscopy (TEM) as it offers the possibility to perform structural and elemental analysis at a local scale. Relatively recent advances in aberration correctors and electron sources allow the instrument to achieve atomic resolution. Along with these advances, a state-of-the-art technology has been reached in TEM. However, the instrument is far from being perfect and imperfections or external sources can make the interpretation of information troublesome. Environmental factors such as acoustic and mechanical vibrations, temperature fluctuations, etc., can induce sample drift and create image distortions. These distortions are enhanced in scanning operation because of the serial acquisition of the information, which are more apparent at atomic resolution as small field of views are imaged. In addition, scanning distortions are induced due to the finite time response of the scan coils. These types of distortions would reduce precision in atomic-scale strain analysis, for instance, in semiconductors. Most of the efforts to correct these distortions are focused on data processing techniques post-acquisition. Another limitation in TEM is beam damage effects. Beam damage arises because of the energy transferred to the sample in electron-sample interactions. In scanning TEM, at atomic resolution, the increased electron charge density (electron dose) carried on a sub-Å size electron probe may aggravate beam damage effects. Soft materials such as zeolites, organic, biological materials, etc., can be destroyed under irradiation limiting the amount of information that can be acquired. Current efforts to circumvent beam damage are mostly based on low electron dose acquisitions and data processing methods to maximize the signal at low dose conditions. In this thesis, a different approach is given to address drift and scanning distortions, as well as beam damage effects. Novel scan strategies are proposed for that purpose, which are shown to substantially overcome these issues compared to the standard scan method in TEM.
Keywords: Doctoral thesis; Electron microscopy for materials research (EMAT)
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“Size effect of bifunctional gold in hierarchical titanium oxide-gold-cadmium sulfide with slow photon effect for unprecedented visible-light hydrogen production”. Zhao H, Li C-F, Hu Z-Y, Liu J, Li Y, Hu J, Van Tendeloo G, Chen L-H, Su B-L, Journal Of Colloid And Interface Science 604, 131 (2021). http://doi.org/10.1016/J.JCIS.2021.06.167
Abstract: Gold nanoparticles (Au NPs) with surface plasmonic resonance (SPR) effect and excellent internal electron transfer ability have widely been combined with semiconductors for photocatalysis. However, the in-depth effects of Au NPs in multicomponent photocatalysts have not been completely understood. Herein, ternary titanium oxide-gold-cadmium sulfide (TiO2-Au-CdS, TAC) photocatalysts, based on hierarchical TiO2 inverse opal photonic crystal structure with different Au NPs sizes have been designed to reveal the SPR effect and internal electron transfer of Au NPs in the presence of slow photon effect. It appears that the SPR effect and internal electron transfer ability of Au NPs, depending on their sizes, play a synergistic effect on the photocatalytic enhancement. The ternary TAC-10 photocatalyst with – 10 nm Au NPs demonstrates an unprecedented hydrogen evolution rate of 47.6 mmolh-1g 1 under visible-light, demonstrating- 48% enhancement comparing to the sample without slow photon effect. In particular, a 9.83% apparent quantum yield under 450 nm monochromatic light is achieved for TAC-10. A model is proposed and finite-difference time-domain (FDTD) simulations reveal the size influence of Au NPs in ternary TAC photocatalysts. This work suggests that the rational design of bifunctional Au NPs coupling with slow photon effect could largely promote hydrogen production from visible-light driven water splitting. (c) 2021 Elsevier Inc. All rights reserved.
Keywords: A1 Journal article; Electron microscopy for materials research (EMAT)
Impact Factor: 4.233
DOI: 10.1016/J.JCIS.2021.06.167
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“The uptake of ZnO and CuO nanoparticles in the water-flea Daphnia magna under acute exposure scenarios”. Adam N, Leroux F, Knapen D, Bals S, Blust R, Environmental pollution 194, 130 (2014). http://doi.org/10.1016/j.envpol.2014.06.037
Abstract: In this study the uptake of ZnO and CuO nanoparticles by Daphnia magna was tested. Daphnids were exposed during 48 h to acute concentrations of the nanoparticles and corresponding metal salts. The Daphnia zinc and copper concentration was measured and the nanoparticles were localized using electron microscopy. The aggregation and dissolution in the medium was characterized. A fast dissolution of ZnO in the medium was observed, while most CuO formed large aggregates and only a small fraction dissolved. The Daphnia zinc concentration was comparable for the nanoparticles and salts. Contrarily, a much higher Daphnia copper concentration was observed in the CuO exposure, compared to the copper salt. CuO nanoparticles adsorbed onto the carapace and occurred in the gut but did not internalize in the tissues. The combined dissolution and uptake results indicate that the toxicity of both nanoparticle types was caused by metal ions dissolved from the particles in the medium.
Keywords: A1 Journal article; Electron microscopy for materials research (EMAT); Veterinary physiology and biochemistry
Impact Factor: 5.099
Times cited: 45
DOI: 10.1016/j.envpol.2014.06.037
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“Melting temperatures and possible precursor plastic phases of CCl4and GeI4as a function of pressure”. Matthai CC, Lamoen D, March NH, Physics and chemistry of liquids 54, 130 (2016). http://doi.org/10.1080/00319104.2015.1068666
Abstract: The motivation for the present study is to be found in the recent experiments of Fuchizaki and Hamaya on GeI4. They observed a rapid increase in the melting temperature Tm in going from atmospheric pressure to p ~ 2.6 GPa. Tm was found to be largely independent of pressure above this value. In this paper, heuristic arguments are presented to support the idea that until some critical pressure, a crystalline phase of SnI4, CCl4 and GeI4 molecular solids melts into a low density liquid. However, at this critical pressure, a phase boundary intersects Tm(p), separating a low density liquid phase from a high density liquid. The new phase boundary is between the crystal and an amorphous molecular solid with increasing polymerisation as the pressure is increased.
Keywords: A1 Journal article; Electron microscopy for materials research (EMAT)
Impact Factor: 1.145
DOI: 10.1080/00319104.2015.1068666
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Lumbeeck G (2019) Mechanisms of nano-plasticity in as-deposited and hydrided nanocrystalline Pd and Ni thin films. 130 p
Keywords: Doctoral thesis; Electron microscopy for materials research (EMAT)
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“Heterogeneous interfacial chemical nature and bonds in a W-coated diamond/Al composite”. Ji G, Tan Z, Lu Y, Schryvers D, Li Z, Zhang D, Materials characterization 112, 129 (2016). http://doi.org/10.1016/j.matchar.2015.12.013
Abstract: Heterogeneous Al/Al4C3/Al2O3/diamond{111}, Al/nanolayered Al4C3/diamond{111} and Al12W particle/Al4C3/Al2O3/diamond{111} multi-interfaces have been developed at the nanoscale in a W-coated diamond/Al composite produced by vacuum hot pressing. The formation of nanoscale Al4C3 crystals is strongly associated with local O enrichment and can be further promoted by Al12W interfacial particles. The latter effectively contributes to enhance interfacial chemical bonding reducing interfacial thermal resistance and, in turn, enhancing thermal conductivity.
Keywords: A1 Journal article; Engineering sciences. Technology; Electron microscopy for materials research (EMAT)
Impact Factor: 2.714
Times cited: 7
DOI: 10.1016/j.matchar.2015.12.013
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