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Surface segregation of Fe in Pt–Fe alloy nanoparticles: Its precedence and effect on the ordered-phase evolution during thermal annealing

Publication

ChemCatChem

Prabhudev, S.; Bugnet, M.; Zhu, G. -Z.; Bock, C.; Botton, G. A.

Coupling electron microscopy techniques with in situ heating ability allows us to study phase transformations on the single-nanoparticle level.
Contact-induced nucleation in high-performance bottom-contact organic thin film transistors manufactured by large-area compatible solution processing

Publication

Advanced Functional Materials

Niazi, M. R.; Li, R.; Abdelsamie, M.; Zhao, K.; Anjum, D. H.; Payne, M. M.; Anthony, J.; Smilgies, D. -M.; Amassian, A.;

Scalable manufacturing of small-molecule organic thin film transistors (OTFTs) with performance approaching single crystals requires extraordinary control over microstructures and morphologies of organic semiconductors (OSCs).
Gigahertz dielectric polarization of substitutional single niobium atoms in defective graphitic layers

Publication

Physical Review Letters

Zhang, X.; Guo, J.; Guan, P.; Qin, G.; Pennycook, S. J.

We synthesize two Nb/C composites with an order of magnitude difference in the density of single niobium atoms substituted into defective graphitic layers.
STEM alignment for EELS analysis

Media Video

Electron energy loss spectroscopy (EELS) tutorial for STEM alignment.
The use of MLLS fitting approach to resolve overlapping edges in the EELS spectrum at the atomic level

Methods

The multiple linear least squares (MLLS) fitting routine provides a very useful means for mapping difference spectra phases or features by reference to their spectral signature. . . .
Review of recent advances in spectrum imaging and its extension to reciprocal space

Methods

Downloadable *.pdf of the application note.
Fast STEM spectrum imaging using simultaneous EELS and EDS in Gatan Microscopy Suite software

Methods

Up to now, researchers performing analytical investigations in the transmission electron microscope typically had to choose between analytical spectroscopy techniques. . . .
Fast simultaneous acquisition of low- and core-loss regions in the EELS spectrum from catalyst particles containing the heavy metals Au and Pd using the GIF Quantum system

Methods

Metals such Pd and Pt have been extensively used in the automotive industry as exhaust gas catalyst for pollution control. . . .
EELS: A tool for investigating biological materials

Methods

Electron energy loss spectroscopy (EELS) is the analysis of the energy distribution of the electrons that have passed through a thin sample and have interacted with it inelastically. . . .
High speed EELS composition analysis, in DualEELS mode, of metal alloy ohmic contacts for the fabrication of III-V MOSFET devices

Methods

As the size of III-V devices decreases, ohmic contacts and their performance becomes increasingly significant. . . .

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