S. Ullmann

Atomic-scale electron microscopy at ambient pressure

J.F. Creemer, Stig Helveg, G.H. Hoveling et al. · Ultramicroscopy · 2008 · 329 citations

Engineering, Electron Microscopy, Physics +5

Dissociation of CH4 on Ni(111) and Ru(0001)

R.C. Egeberg, S. Ullmann, I. Alstrup et al. · Surface Science · 2002 · 105 citations

Inorganic Chemistry, Theoretical Inorganic Chemistry, Natural Sciences +2

Chemisorption of Methane on Ni(100) and Ni(111) Surfaces with Preadsorbed Potassium

H.S. Bengaard, I. Alstrup, Ib Chorkendorff et al. · Journal of Catalysis · 1999 · 104 citations

Surface Characterization, Inorganic Chemistry, Chemical Engineering +10

Xps study of chemisorption of CH4 on Ni(100)

Ib Chorkendorff, I. Alstrup, S. Ullmann · Surface Science · 1990 · 101 citations

Inorganic Chemistry, Engineering, Chemical Form +5

The interaction of CH4 at high temperatures with clean and oxygen precovered Cu(100)

I. Alstrup, Ib Chorkendorff, S. Ullmann · Surface Science · 1992 · 77 citations

Materials Science, Inorganic Chemistry, Engineering +7