Search Results - "de Backer, Annick"
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Advanced electron crystallography through model-based imaging
Published in IUCrJ (01-01-2016)“…The increasing need for precise determination of the atomic arrangement of non-periodic structures in materials design and the control of nanostructures…”
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In situ study of the formation mechanism of two-dimensional superlattices from PbSe nanocrystals
Published in Nature materials (01-12-2016)“…A real-time study of the growth of two-dimensional nanocrystal superlattices with square periodicity shows the formation mechanism leading to the oriented…”
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3
Three-Dimensional Quantification of the Facet Evolution of Pt Nanoparticles in a Variable Gaseous Environment
Published in Nano letters (09-01-2019)“…Pt nanoparticles play an essential role in a wide variety of catalytic reactions. The activity of the particles strongly depends on their three-dimensional…”
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4
Locating and Controlling the Zn Content in In(Zn)P Quantum Dots
Published in Chemistry of materials (14-01-2020)“…Zinc is routinely employed in the synthesis of InP quantum dots (QDs) to improve the photoluminescence efficiency and carrier mobility of the resulting…”
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Measuring Lattice Strain in Three Dimensions through Electron Microscopy
Published in Nano letters (14-10-2015)“…The three-dimensional (3D) atomic structure of nanomaterials, including strain, is crucial to understand their properties. Here, we investigate lattice strain…”
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Achieving atomic precision 3D reconstructions through Bayesian genetic optimisation
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Preventing cation intermixing enables 50% quantum yield in sub-15 nm short-wave infrared-emitting rare-earth based core-shell nanocrystals
Published in Nature communications (25-07-2023)“…Short-wave infrared (SWIR) fluorescence could become the new gold standard in optical imaging for biomedical applications due to important advantages such as…”
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Recent Advances in Transmission Electron Microscopy for Materials Science at the EMAT Lab of the University of Antwerp
Published in Materials (28-07-2018)“…The rapid progress in materials science that enables the design of materials down to the nanoscale also demands characterization techniques able to analyze the…”
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9
Capturing the diffusion of individual atoms in 3D: Heat-induced alloying in Au@Ag nanoparticles
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10
Experimental reconstructions of 3D atomic structures from electron microscopy images using a Bayesian genetic algorithm
Published in npj computational materials (12-10-2022)“…We introduce a Bayesian genetic algorithm for reconstructing atomic models of monotype crystalline nanoparticles from a single projection using Z-contrast…”
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11
Atom-counting for heterogeneous nanostructures using multimodal STEM
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12
Low-Dose 4D-STEM Investigations of the Octahedral Network Structure in Formamidinium Lead Bromide Nanocrystals
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13
Recent breakthroughs in scanning transmission electron microscopy of small species
Published in Advances in physics: X (01-01-2018)“…Over the last decade, scanning transmission electron microscopy has become one of the most powerful tools to characterise nanomaterials at the atomic scale…”
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Towards atom counting from first moment STEM images: Methodology and possibilities
Published in Ultramicroscopy (01-01-2025)“…•A method to quantify atomic resolution first moment STEM images was developed.•The images are modelled as a superposition of derivatives of 2D Lorentzian…”
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Hidden Markov model for atom-counting from sequential ADF STEM images: Methodology, possibilities and limitations
Published in Ultramicroscopy (01-12-2020)“…We present a quantitative method which allows us to reliably measure dynamic changes in the atomic structure of monatomic crystalline nanomaterials from a time…”
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Measuring Dynamic Structural Changes of Nanoparticles at the Atomic Scale Using Scanning Transmission Electron Microscopy
Published in Physical review letters (13-03-2020)“…We propose a new method to measure atomic scale dynamics of nanoparticles from experimental high-resolution annular dark field scanning transmission electron…”
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17
Fast generation of calculated ADF-EDX scattering cross-sections under channelling conditions
Published in Ultramicroscopy (01-04-2023)“…Advanced materials often consist of multiple elements which are arranged in a complicated structure. Quantitative scanning transmission electron microscopy is…”
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Towards atomic scale multi-elemental quantification based on inelastic electron scattering physics
Published in Acta crystallographica. Section A, Foundations and advances (22-08-2023)“…Abstract only…”
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Modelling ADF STEM images using elliptical Gaussian peaks and its effects on the quantification of structure parameters in the presence of sample tilt
Published in Ultramicroscopy (01-11-2021)“…A small sample tilt away from a main zone axis orientation results in an elongation of the atomic columns in ADF STEM images. An often posed research question…”
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Investigation of the Octahedral Network Structure in Formamidinium Lead Bromide Nanocrystals by Low-Dose Scanning Transmission Electron Microscopy
Published in Nano letters (04-09-2024)“…Metal halide perovskites (MHP) are highly promising semiconductors. In this study, we focus on FAPbBr3 nanocrystals, which are of great interest for green…”
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