Results 11 to 20 of about 1,009,271 (363)
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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Phase imaging in scanning transmission electron microscopy using bright-field balanced divergency method [PDF]
Ultramicroscopy 245 (2023): 113665, 2023 We introduce a phase imaging mechanism for scanning transmission electron microscopy that exploits the complementary intensity changes of transmitted disks at different scattering angles. For scanning transmission electron microscopy, this method provides a straightforward, dose-efficient, and noise-robust phase imaging, from atomic resolution to ...
arxiv +1 more source
Treatment planning with a 2.5 MV photon beam for radiation therapy
Journal of Applied Clinical Medical Physics, Volume 23, Issue 12, December 2022., 2022 Abstract Purpose The shallow depth of maximum dose and higher dose fall‐off gradient of a 2.5 MV beam along the central axis that is available for imaging on linear accelerators is investigated for treatment of shallow tumors and sparing the organs at risk (OARs) beyond it.
Navid Khaledi +5 more
wiley +1 more source
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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Visualizing quantum phenomena at complex oxide interfaces: an atomic view from scanning transmission electron microscopy [PDF]
Frontiers of Physics, 15(1), 13401 (2020), 2021 Complex oxide interfaces have been one of the central focuses in condensed matter physics and material science. Over the past decade, aberration corrected scanning transmission electron microscopy and spectroscopy has proven to be invaluable to visualize and understand the emerging quantum phenomena at an interface.
arxiv +1 more source
Transmission Electron Microscopy for Chemists [PDF]
Accounts of Chemical Research, 2017 Guest Editorial for the Accounts of Chemical Research special issue on “Direct Visualization of Chemical and Self-Assembly Processes with Transmission Electron Microscopy”.
Eiichi Nakamura +2 more
openaire +2 more sources
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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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
openaire +5 more sources
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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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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