Stig Helveg
Stig Helveg
Professor, DTU Physics
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Atomic-scale imaging of carbon nanofibre growth
S Helveg, C Lopez-Cartes, J Sehested, PL Hansen, BS Clausen, ...
Nature 427 (6973), 426-429, 2004
Atom-resolved imaging of dynamic shape changes in supported copper nanocrystals
PL Hansen, JB Wagner, S Helveg, JR Rostrup-Nielsen, BS Clausen, ...
Science 295 (5562), 2053-2055, 2002
Atomic-Scale Structure of Single-Layer Nanoclusters
S Helveg, JV Lauritsen, E Lægsgaard, I Stensgaard, JK Nørskov, ...
Physical review letters 84 (5), 951, 2000
Size-dependent structure of MoS2 nanocrystals
JV Lauritsen, J Kibsgaard, S Helveg, H Topsøe, BS Clausen, ...
Nature nanotechnology 2 (1), 53-58, 2007
First principles calculations and experimental insight into methane steam reforming over transition metal catalysts
G Jones, JG Jakobsen, SS Shim, J Kleis, MP Andersson, J Rossmeisl, ...
Journal of Catalysis 259 (1), 147-160, 2008
One-dimensional metallic edge states in MoS 2
MV Bollinger, JV Lauritsen, KW Jacobsen, JK Nørskov, S Helveg, ...
Physical review letters 87 (19), 196803, 2001
Quantifying the promotion of Cu catalysts by ZnO for methanol synthesis
S Kuld, M Thorhauge, H Falsig, CF Elkjær, S Helveg, I Chorkendorff, ...
Science 352 (6288), 969-974, 2016
Location and coordination of promoter atoms in Co-and Ni-promoted MoS2-based hydrotreating catalysts
JV Lauritsen, J Kibsgaard, GH Olesen, PG Moses, B Hinnemann, ...
Journal of Catalysis 249 (2), 220-233, 2007
Direct observations of oxygen-induced platinum nanoparticle ripening studied by in situ TEM
SB Simonsen, I Chorkendorff, S Dahl, M Skoglundh, J Sehested, ...
Journal of the American Chemical Society 132 (23), 7968-7975, 2010
Atomic-scale structure of Co–Mo–S nanoclusters in hydrotreating catalysts
JV Lauritsen, S Helveg, E Lægsgaard, I Stensgaard, BS Clausen, ...
Journal of Catalysis 197 (1), 1-5, 2001
Visualization of oscillatory behaviour of Pt nanoparticles catalysing CO oxidation
SB Vendelbo, CF Elkjær, H Falsig, I Puspitasari, P Dona, L Mele, ...
Nature materials 13 (9), 884-890, 2014
Atomic-scale electron microscopy at ambient pressure
JF Creemer, S Helveg, GH Hoveling, S Ullmann, AM Molenbroek, ...
Ultramicroscopy 108 (9), 993-998, 2008
Recent STM, DFT and HAADF-STEM studies of sulfide-based hydrotreating catalysts: Insight into mechanistic, structural and particle size effects
F Besenbacher, M Brorson, BS Clausen, S Helveg, B Hinnemann, ...
Catalysis Today 130 (1), 86-96, 2008
Mechanisms for catalytic carbon nanofiber growth studied by ab initio density functional theory calculations
F Abild-Pedersen, JK Nørskov, JR Rostrup-Nielsen, J Sehested, S Helveg
Physical Review B 73 (11), 115419, 2006
Relating rates of catalyst sintering to the disappearance of individual nanoparticles during Ostwald ripening
SR Challa, AT Delariva, TW Hansen, S Helveg, J Sehested, PL Hansen, ...
Journal of the american chemical society 133 (51), 20672-20675, 2011
How a gold substrate can increase the reactivity of a Pt overlayer
MØ Pedersen, S Helveg, A Ruban, I Stensgaard, E Lægsgaard, ...
Surface Science 426 (3), 395-409, 1999
Enhancement of surface self-diffusion of platinum atoms by adsorbed hydrogen
S Horch, HT Lorensen, S Helveg, E Lægsgaard, I Stensgaard, ...
Nature 398 (6723), 134-136, 1999
Sintering of nickel catalysts: Effects of time, atmosphere, temperature, nickel-carrier interactions, and dopants
J Sehested, JAP Gelten, S Helveg
Applied Catalysis A: General 309 (2), 237-246, 2006
Atomic‐Scale Edge Structures on Industrial‐Style MoS2 Nanocatalysts
LP Hansen, QM Ramasse, C Kisielowski, M Brorson, E Johnson, ...
Angewandte Chemie 43 (123), 10335-10338, 2011
Ostwald ripening in a Pt/SiO2 model catalyst studied by in situ TEM
SB Simonsen, I Chorkendorff, S Dahl, M Skoglundh, J Sehested, ...
Journal of catalysis 281 (1), 147-155, 2011
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