Contact: Evan Lerner
University of Pennsylvania
Caption: This is an illustration of a silicon atomic force microscope tip sliding over the surface of a diamond punch. While in contact, silicon atoms from the tip bond with the carbon atoms of the diamond and are left behind as the tip slides on. Penn researchers conducted the wear experiment in a transmission electron microscope to observe this "atomic attrition" in action. A TEM image of the tip is inset.
Credit: Felice Macera
Usage Restrictions: With credit
Related news release: Penn research shows mechanism behind wear at the atomic scale