The optimization of surface coatings and lubricants requires a profound understanding of nanoscale friction. Therefore, AFM-based single polymer friction and adhesion experiments are performed at the solid-liquid interface. Single poly(amino acids)- and polystyrene-based polymer constructs are measured on solid substrates as well as on thin polyelectrolyte multilayers and on thin polystyrene films in liquid environment. Three different friction mechanisms are detected: slip, desorption stick and cooperative stick. Finally, the mechanism of geometrical interlock between polymers is investigated for both friction and adhesion.
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The optimization of surface coatings and lubricants requires a profound understanding of nanoscale friction. Therefore, AFM-based single polymer friction and adhesion experiments are performed at the solid-liquid interface. Single poly(amino acids)- and polystyrene-based polymer constructs are measured on solid substrates as well as on thin polyelectrolyte multilayers and on thin polystyrene films in liquid environment. Three different friction mechanisms are detected: slip, desorption stick and...
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