Abstract
We investigate nanoscale interface properties using dynamic mode atomic force microscopy (AFM) operated in the frequency modulation mode in ultrahigh vacuum. The AFM tip was was functionalised by a thin layer of aluminium and the polymer was treated by plasma-etching. In the spectroscopy mode we could measure the adhesion properties between the metal and the polymer surfaces. We found that plasma-etching of the polymer resulted in strongly enhanced force interactions, indicating a chemical activation of the polymer surface. Values for the adhesion force and work of adhesion were measured on the nanometer scale and are compared to conventional macroscopic adhesion failure tests.
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