| People | Locations | Statistics |
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| Naji, M. |
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| Motta, Antonella |
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| Aletan, Dirar |
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| Mohamed, Tarek |
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| Ertürk, Emre |
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| Taccardi, Nicola |
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| Kononenko, Denys |
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| Petrov, R. H. | Madrid |
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| Alshaaer, Mazen | Brussels |
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| Bih, L. |
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| Casati, R. |
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| Muller, Hermance |
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| Kočí, Jan | Prague |
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| Šuljagić, Marija |
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| Kalteremidou, Kalliopi-Artemi | Brussels |
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| Azam, Siraj |
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| Ospanova, Alyiya |
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| Blanpain, Bart |
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| Ali, M. A. |
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| Popa, V. |
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| Rančić, M. |
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| Ollier, Nadège |
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| Azevedo, Nuno Monteiro |
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| Landes, Michael |
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| Rignanese, Gian-Marco |
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Hofer, Ferdinand
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (26/26 displayed)
- 2024Three-dimensional distribution of individual atoms in the channels of beryl
- 2024Atom by atom analysis of defect structures in doped STO
- 2022Quantifying Ordering Phenomena at the Atomic Scale in Rare Earth Oxide Ceramics via EELS Elemental Mapping
- 2022A study on the correlation between micro and magnetic domain structure of Cu52Ni34Fe14 spinodal alloyscitations
- 2022Challenges in the characterization of complex nanomaterials with analytical STEM
- 2022Mixed-metal nanoparticlescitations
- 2021An In Situ Synchrotron Dilatometry and Atomistic Study of Martensite and Carbide Formation during Partitioning and Temperingcitations
- 2021Spectroscopic STEM imaging in 2D and 3D
- 2020Helium droplet assisted synthesis of plasmonic Ag@ZnO core@shell nanoparticlescitations
- 2020Ultrashort XUV pulse absorption spectroscopy of partially oxidized cobalt nanoparticlescitations
- 2019Ultra-thin h-BN substrates for nanoscale plasmon spectroscopycitations
- 2019On the passivation of iron particles at the nanoscalecitations
- 2019The impact of swift electrons on the segregation of Ni-Au nanoalloyscitations
- 2019Effects of the Core Location on the Structural Stability of Ni-Au Core-Shell Nanoparticlescitations
- 2019Structural characterization of poly-Si Films crystallized by Ni Metal Induced Lateral Crystallizationcitations
- 2018Stability of Core-Shell Nanoparticles for Catalysis at Elevated Temperaturescitations
- 2018How Dark Are Radial Breathing Modes in Plasmonic Nanodisks?citations
- 2017Thermally induced breakup of metallic nanowirescitations
- 2017Inclusions in Si whiskers grown by Ni metal induced lateral crystallizationcitations
- 2017How Dark Are Radial Breathing Modes in Plasmonic Nanodisks?citations
- 2016Formation of bimetallic clusters in superfluid helium nanodroplets analysed by atomic resolution electron tomography
- 2014Order vs. disorder — a huge increase in ionic conductivity of nanocrystalline LiAlO2 embedded in an amorphous-like matrix of lithium aluminatecitations
- 2013Bismuth sulphide–polymer nanocomposites from a highly soluble bismuth xanthate precursorcitations
- 2013Influence of the bridging atom in fluorene analogue low‐bandgap polymers on photophysical and morphological properties of copper indium sulfide/polymer nanocomposite solar cellscitations
- 2012Comprehensive Investigation of Silver Nanoparticle/Aluminum Electrodes for Copper Indium Sulfide/Polymer Hybrid Solar Cellscitations
- 2012Application of elemental microanalysis to elucidate the role of spherites in the digestive gland of the helicid snail Chilostoma lefeburiana
Places of action
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document
Challenges in the characterization of complex nanomaterials with analytical STEM
Abstract
Aberration corrected electron optics, novel detection techniques in combination with advancedcomputational capabilities have turned scanning transmission electron microscopy (STEM) intoone of the most powerful characterization techniques for a wide range of nanomaterials. Itsversatility stems from the availability of different imaging and diffraction modes as well asanalytical techniques such as electron energy-loss (EELS) and energy dispersive X-rayspectroscopy (EDX), which enables one to deduce information about structure, elementalcomposition and chemical bonding with atomic resolution [1]. This has paved the way for manybreakthroughs in understanding fundamental phenomena in physics, chemistry and materialscience in recent years.In practice, however, structural and chemical characterization on an atomic level, such as thedetection of impurities, dopants or point defects within a crystal, is often impeded by experimentalchallenges in sample preparation, limitations in signal-to-noise ratios (SNR), instrumentalinstabilities and the high current densities introduced by a highly focused electron beam. Thisleads to steady, yet often unrecognized specimen transformations [2], especially when applyingspectroscopic techniques, which in general require higher acquisition doses. This is particularlytrue for experiments that aim to determine concentrations or defects quantitatively [1, 3]. As aconsequence, many highly relevant material systems such as battery materials, materials with ahigh amount of low-coordinated surface atoms (nanoporous materials and nanoclusters) andorganic/biological materials, require the development of novel methodologies in preparation,characterisation and data analysis.The talk will give an overview over acquisition and analysis strategies for STEM spectroscopytackling the above-mentioned challenges by exemplary showcasing some selected researchquestions, with different material systems like complex oxides, metallic clusters and energymaterials.Exemplary, the column-by-column quantification of barium lanthanum ferrate and thecompositional characterization of Au@Ag and Ag@Au core-shell nanoclusters will be discussed.Emphasis will be placed on the use of direct detection detectors for EELS and complementaryhigh-sensitivity EDX.