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Jointly acquired HAADF and MAADF signals

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The HAADF signal (left) contrast is easily interpreted in terms of mass thickness of the material while the diffraction contrast MAADF signal (right) reveals highly detailed structural changes in the material. The optimized geometry makes this possible.
Phosphorus-containing macromolecular assemblies in the cell nuclei of drosophila larvae

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Data courtesy of Dr. Maria Aronova and Dr. Richard Leapman, National Institutes of Health, Bethesda, Maryland.

Image of phosphorus-containing macromolecular assemblies in the cell nuclei of drosophila larvae; dual-axis EFTEM tilt series acquired with a Tridiem energy filter from -66˚ to 66˚; for each axis phosphorus L-23 series (20 eV slit, pre-edge and post-edge) were collected; a jump-ratio series was c
Evaluation of cytotoxic, genotoxic and inflammatory response in human alveolar and bronchial epithelial cells exposed to titanium dioxide nanoparticles

Publication

Journal of Applied Toxicology

Ursini, C. L.; Cavallo, D.; Fresegna, A. M.; Ciervo, A.; Maiello, R.; Tassone, P.; Buresti, G.; Casciardi, S.; Iavicoli, S.

The toxicity of titanium dioxide nanoparticles (TiO2-NPs), used in several applications, seems to be influenced by their specific physicochemical characteristics.
Review of recent advances in spectrum imaging and its extension to reciprocal space

Publication

Japan Society of Microscopy

Maigne, A.; Twesten, R. D.

Using examples from various domains of science, this review covers some recent developments in spectrum imaging (SI) using scanning transmission electron microscopy (STEM) and electron energy loss spectroscopy (EELS).
Atomic scale real-space mapping of holes in YBa2Cu3O6+δ

Publication

Nature Communications

Gauquelin, N.; Hawthorn, D. G.; Sawatzky, G. A.; Liang, R. X.; Bonn, D. A.; Hardy, W. N.; Botton, G. A.

The high-temperature superconductor YBa2Cu3O6+δ consists of two main structural units—a bilayer of CuO2 planes that are central to superconductivity and a CuO2+δ chain layer.
A model study on the carburization process of iron-based Fischer–Tropsch catalysts using in situ TEM–EELS

Publication

Applied Catalysis B: Environmental

Janbroers, S.: Crozierc, P. A.; Zandbergen, H. W.; Kooyman, P. J.

In order to elucidate the activation mechanism of iron based Fischer–Tropsch catalysts, we performed in situ nanoscale structural and compositional analysis during carburization in CO atmosphere. We found that inside an ETEM at 20 Torr CO, hematite reduces while severe sintering occurs.
Evolution of order in amorphous-to-crystalline phase transformation of MgF2

Publication

Journal of Applied Crystallography

Mu, X.; Neelamraju, S.; Sigle, W.; Koch, C. T.; Totò, N.; Schön, J. C.; Bach, A.; Fischer, D.; Jansen, M.; van Aken, P. A.

Structural disorder and distortion play a significant role in phase transformations. Experimentally, electron diffraction in the transmission electron microscope offers the ability to characterize disorder via the pair distribution function (PDF) at high spatial resolution.
Fe speciation in geopolymers with Si/Al molar ratio of ∼2

Publication

Journal of the European Ceramic Society

Perera, D. S.; Cashion, J. D.; Blackford, M. G.; Zhang, Z.; Vance, E. R.

The speciation of Fe was studied in metakaolin-based geopolymers to which Fe was added as ferric nitrate solution or freshly precipitated ferric hydroxide.
Nanoimaging and spectroscopic analysis of rubber/ZnO interfaces by energy-tiltering transmission electron microscopy

Publication

Langmuir

Horiuchi, S.; Dohi, H.

Energy-filtering transmission electron microscopy (EFTEM) was employed for investigating interactions between rubber and ZnO particles in the accelerated vulcanization process.
Heterogeneity of a vulcanized rubber by the formation of ZnS clusters

Publication

Polymer

Dohi, H.; Horiuchi, S.

We investigated vulcanized rubber structures by energy-filtering transmission electron microscopy (EFTEM) and by high-angle annular dark field scanning transmission electron microscopy (HAADF-STEM).

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