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Showing 61-70 of 144

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).
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.
Jointly acquired HAADF and MAADF signals

Media Image

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.
Fast STEM spectrum imaging using simultaneous EELS and EDS

Publication

Microscopy Today

Longo, P.; Twesten, R.
Optimizing STEM spectrum image acquisition for high speed analysis

Media Video

STEM EELS spectrum imaging can reveal composition and chemical changes at the nanoscale and even the atomic scale in many cases. To reveal this information, the researcher needs to optimize not only the spectrometer, but also the sample and the STEM configuration.
Joint EELS–EDS spectrum imaging for fast-mapping and atomic scale analysis

Media Video

The complementary nature of electron energy loss spectroscopy (EELS) and energy dispersive spectroscopy (EDS) signals makes it highly desirable to acquire both during transmission electron microscope (TEM) investigations of materials.
Nanoscale voxel spectroscopy by simultaneous EELS and EDS tomography

Publication

Nanoscale

Haberfehlner, G.; Orthacker, A.; Albu, M.; Li, J.; Kothleitner, G.

Extending the capabilities of electron tomography with advanced imaging techniques and novel data processing methods, can augment the information content in three-dimensional (3D) reconstructions from projections taken in the transmission electron microscope (TEM).
Uranium trioxide behaviour during electron energy loss spectroscopy analysis

Publication

Radiation Physics and Chemistry

Degueldre, C.; Alekseev, E.

A sample of uranium trioxide (UO3) was produced by focused ion beam (~10 μm x ~10 μm x
Single molecular spectroscopy: Identification of individual fullerene molecules

Publication

Physical Review Letters

Tizei, L. H. G.; Liu, Z.; Koshino, M.; Iizumi, Y.; Okazaki, T.; Suenaga, K.

We report the molecule-by-molecule spectroscopy of individual fullerenes by means of electron spectroscopy based on scanning transmission electron microscopy.
Bilayer graphene formed by passage of current through graphite: evidence for a three-dimensional structure

Publication

Nanotechnology

Harris, P. J. F.; Slater, T. J. A.; Haigh, S. J.; Hage, F. S.; Kepaptsoglou, D. M.; Ramasse, Q. M.; Brydson, R.

The passage of an electric current through graphite or few-layer graphene can result in a striking structural transformation, but there is disagreement about the precise nature of this process.

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