You seem to be attempting to access an item that has been removed from the repository.
The item you are trying to access was a duplicate of:
Colak, A. and Wormeester, H. and Zandvliet, H.J.W. and Poelsema, B. (2012) Surface adhesion and its dependence on surface roughness and humidity measured with a flat AFM tip. Applied surface science, 258 (18). 6938 - 6942. ISSN 0169-4332