Mika Harju1, Mikael Järn2, Per Dahlsten2, Juha-Pekka Nikkanen1, Jarl B. Rosenholm2, Tapio Mäntylä1
1Department of Materials Science, Tampere University of Technology, P.O. Box 589, 33101 Tampere, Finland
2Department of Physical Chemistry, Åbo Akademi University, Porthansgatan 3-5, 20500 Åbo, Finland