Results 21 to 30 of about 4,079,718 (286)
AIP Advances, 2022 AlN layers were grown on a c-plane sapphire substrate by metal–organic vapor phase epitaxy (MOVPE) at 1350 °C. The structural quality of the grown AlN layers was drastically improved by post-growth annealing in mixed hydrogen, ammonia, and ...
Masataka Imura +8 more
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Coexisting multi-states in catalytic hydrogen oxidation on rhodium
Nature Communications, 2021 Catalytic reactions may exhibit oscillations in the reaction rate even at constant external parameters. Here, the authors observe and explain the coexistence of such oscillations and the steady states of catalytic activity in H2 oxidation on differently ...
P. Winkler +9 more
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Understanding electrochemical switchability of perovskite-type exsolution catalysts
Nature Communications, 2020 Exsolution, nanoparticle precipitation from oxide materials during reduction, offers a promising approach to heterogeneous catalysis. Here, authors examine the switching behavior between high and low activity and correlate the electro-catalytic activity ...
Alexander K. Opitz +10 more
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Analytical Transmission Electron Microscopy [PDF]
Reviews in Mineralogy and Geochemistry, 2014 Analytical transmission electron microscopy (TEM) is used to reveal sub-micrometer, internal fine structure (the microstructure or ultrastructure ) and chemistry in minerals. The amount and scale of the information which can be extracted by TEM depends critically on four parameters; the resolving power of the microscope (usually smaller than 0.3 nm ...
Brydson, R. +3 more
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Nature Communications, 2021 Surface oxide formation under reaction conditions may change the catalytic activity of a catalyst. Here, the authors explore the effect of atomic structure of Rh surfaces on the surface oxide formation and its influence on catalytic activity in hydrogen ...
P. Winkler +7 more
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Beilstein Journal of Nanotechnology, 2021 Platinum–carbon catalysts are widely used in the manufacturing of proton-exchange membrane fuel cells. Increasing Pt/C activity and stability is an urgent task and the optimization of their structure seems to be one of the possible solutions.
Kirill O. Paperzh +5 more
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Transfer of tilted sample information in transmission electron microscopy [PDF]
, 2010 When a transmission electron microscope is used in imaging mode, information carried by the sample function is transformed by the optics of the instrument during the imaging process.
Mariani, Valerio
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Transmission electron microscopy with in situ ion irradiation [PDF]
, 2015 The macroscopic properties of materials exposed to irradiation are determined by radiation damage effects which occur on the nanoscale. These phenomena are complex dynamic processes in which many competing mechanisms contribute to the evolution of the ...
Hinks, Jonathan Andrew, Hinks, J. A.
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Transmission and scanning electron microscopy of cutis rhomboidalis
Anais Brasileiros de Dermatologia, 2021 Cutis rhomboidalis nuchae was assessed in a 65-year-old patient. Optical microscopy showed basophilic agglomerations in the reticular dermis with decreased elastic fibers.
Ângela Faistauer Torre +3 more
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Conventional transmission electron microscopy
Molecular Biology of the Cell, 2014 Researchers have used transmission electron microscopy (TEM) to make contributions to cell biology for well over 50 years, and TEM continues to be an important technology in our field. We briefly present for the neophyte the components of a TEM-based study, beginning with sample preparation through imaging of the samples.
Winey, Mark +3 more
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