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Showing 11-20 of 22

Study of inelastic mean free path of metal nanostructures using energy filtered transmission electron microscopy imaging

Publication

Journal of Microscopy

Ghosh, T.; Bardhan, M.; Bhattacharya, M.; Satpati, B.

We report a simple method for measuring the inelastic mean free path of nanostructures of known geometry using energy filtered transmission electron microscopy imaging.
Molecular insights of oxidation process of iron nanoparticles: spectroscopic, magnetic and microscopic evidences

Publication

Environmental Science and Technology

Kumar , N.; Auffan, M.; Gattacceca, J.; Rose, J.; Olivi, L.; Borschneck, D.; Kvapil, P.; Jublot, M.; Kaifas, D.; Malleret, L.; Doumenq, P.; Bottero, J. Y.

Oxidation behavior of nano-Fe0 particles in anoxic environment was determined using different state-of-the-art analytical approaches including high resolution transmission electron microscopy (HR-TEM) combined with energy-filtered transmission electron microscopy (EFTEM), X-ray absorption spectro
Phosphorus-containing macromolecular assemblies in the cell nuclei of drosophila larvae

Media Image

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
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.
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).
Nanoscale analysis of polymer interfaces by energy-filtering transmission electron microscopy

Publication

Macromolecular Chemistry and Physics

Horiuchi, S.; Yin, D.; Ougizawa, T.

Energy-filtering transmission electron microscopy (EFTEM) was employed for the analysis of polymer-polymer interfaces. To attain imaging and spectral analyses with a spatial resolution of 10 nm, problems arising in the EFTEM analysis for polymer specimens were investigated.
EELS color map showing the distribution LiFePO4 (red) and FePO4 (green) particles from a battery electrode charged to half cycle

Media Image

Paolo Longo, Ph.D., Gatan Inc. Sample courtesy of Dr. Joshua Sugar at Sandia National Lab, Livermore, CA

Methods

FEI F20 TEM/STEM microscope; S-FEG emission gun; GIF Quantum® ER system; voltage: 200 kV; EFTEM SI mode from 680 – 730 eV; slit width: 2 eV ; step size: 1 eV; total exposure time:
Aberration-corrected and energy filtered precession electron diffraction

Publication

Crystalline Materials

Eggeman, A. S.; Barnard, J. S.; Midgley, P. A.

We report initial findings on improvements to precession electron diffraction (PED) achieved through aberration correction of the probe-forming lens and by energy-filtering.

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