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  1. Article

    Open Access

    Detecting structural variances of Co3O4 catalysts by controlling beam-induced sample alterations in the vacuum of a transmission electron microscope

    This article summarizes core aspects of beam-sample interactions in research that aims at exploiting the ability to detect single atoms at atomic resolution by mid-voltage transmission electron microscopy. Inv...

    C. Kisielowski, H. Frei, P. Specht, I. D. Sharp… in Advanced Structural and Chemical Imaging (2016)

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  2. No Access

    Article

    Visualization of oscillatory behaviour of Pt nanoparticles catalysing CO oxidation

    Many catalytic reactions under fixed conditions exhibit oscillatory behaviour. The oscillations are often attributed to dynamic changes in the catalyst surface. So far, however, such relationships were difficu...

    S. B. Vendelbo, C. F. Elkjær, H. Falsig, I. Puspitasari, P. Dona… in Nature Materials (2014)

  3. No Access

    Chapter and Conference Paper

    Catalytic soot oxidation studied by Environmental Transmission Electron Microscopy

    At present, the awareness of soot abatement in the exhaust from diesel engines is increasing due to new environmental legislation for exhaust specifications. An attractive approach for effective soot removal i...

    S. B. Simonsen, S. Dahl, E. Johnson… in EMC 2008 14th European Microscopy Congress… (2008)

  4. No Access

    Chapter and Conference Paper

    Atomic-resolution Electron Microscopy at Ambient Pressure

    High-resolution TEM (HRTEM) is a powerful technique for atomic-scale imaging of nanomaterials that are kept under high vacuum conditions. However, the technique is also used in in situ studies of gas-solid intera...

    J. F. Creemer, S. Helveg, A. M. Molenbroek… in EMC 2008 14th European Microscopy Congress… (2008)

  5. No Access

    Article

    Sites for catalysis and electrochemistry in solid oxide fuel cell (SOFC) anode

    Fuel cells represent a challenging overlap of catalysis and electrochemistry. This is illustrated by anode reactions in a solid oxide fuel cell. The sites for catalytic conversion of methane and electrochemica...

    J.R. Rostrup-Nielsen, J.B. Hansen, S. Helveg, N. Christiansen… in Applied Physics A (2006)

  6. No Access

    Article

    Enhancement of surface self-diffusion of platinum atoms by adsorbed hydrogen

    Surface diffusion of atoms is an important phenomenon in areas of materials processing such as thin-film growth and sintering. Self-diffusion (that is, diffusion of the atoms of which the surface is comprised)...

    S. Horch, H. T. Lorensen, S. Helveg, E. Lægsgaard, I. Stensgaard, K. W. Jacobsen… in Nature (1999)